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path: root/drivers/soc/tegra
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-rw-r--r--drivers/soc/tegra/Makefile6
-rw-r--r--drivers/soc/tegra/common.c2
-rw-r--r--drivers/soc/tegra/fuse/Makefile2
-rw-r--r--drivers/soc/tegra/fuse/fuse-tegra.c257
-rw-r--r--drivers/soc/tegra/fuse/fuse-tegra20.c175
-rw-r--r--drivers/soc/tegra/fuse/fuse-tegra30.c232
-rw-r--r--drivers/soc/tegra/fuse/fuse.h95
-rw-r--r--drivers/soc/tegra/fuse/speedo-tegra114.c22
-rw-r--r--drivers/soc/tegra/fuse/speedo-tegra124.c26
-rw-r--r--drivers/soc/tegra/fuse/speedo-tegra20.c28
-rw-r--r--drivers/soc/tegra/fuse/speedo-tegra210.c184
-rw-r--r--drivers/soc/tegra/fuse/speedo-tegra30.c48
-rw-r--r--drivers/soc/tegra/fuse/tegra-apbmisc.c76
-rw-r--r--drivers/soc/tegra/pmc.c121
14 files changed, 828 insertions, 446 deletions
diff --git a/drivers/soc/tegra/Makefile b/drivers/soc/tegra/Makefile
index cdaad9d53..ae857ff7d 100644
--- a/drivers/soc/tegra/Makefile
+++ b/drivers/soc/tegra/Makefile
@@ -1,4 +1,4 @@
-obj-$(CONFIG_ARCH_TEGRA) += fuse/
+obj-y += fuse/
-obj-$(CONFIG_ARCH_TEGRA) += common.o
-obj-$(CONFIG_ARCH_TEGRA) += pmc.o
+obj-y += common.o
+obj-y += pmc.o
diff --git a/drivers/soc/tegra/common.c b/drivers/soc/tegra/common.c
index a71cb74f3..cd8f41351 100644
--- a/drivers/soc/tegra/common.c
+++ b/drivers/soc/tegra/common.c
@@ -15,6 +15,8 @@ static const struct of_device_id tegra_machine_match[] = {
{ .compatible = "nvidia,tegra30", },
{ .compatible = "nvidia,tegra114", },
{ .compatible = "nvidia,tegra124", },
+ { .compatible = "nvidia,tegra132", },
+ { .compatible = "nvidia,tegra210", },
{ }
};
diff --git a/drivers/soc/tegra/fuse/Makefile b/drivers/soc/tegra/fuse/Makefile
index 3af357da9..21bc27580 100644
--- a/drivers/soc/tegra/fuse/Makefile
+++ b/drivers/soc/tegra/fuse/Makefile
@@ -6,3 +6,5 @@ obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += speedo-tegra20.o
obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += speedo-tegra30.o
obj-$(CONFIG_ARCH_TEGRA_114_SOC) += speedo-tegra114.o
obj-$(CONFIG_ARCH_TEGRA_124_SOC) += speedo-tegra124.o
+obj-$(CONFIG_ARCH_TEGRA_132_SOC) += speedo-tegra124.o
+obj-$(CONFIG_ARCH_TEGRA_210_SOC) += speedo-tegra210.o
diff --git a/drivers/soc/tegra/fuse/fuse-tegra.c b/drivers/soc/tegra/fuse/fuse-tegra.c
index c0d660f1a..de2c1bfe2 100644
--- a/drivers/soc/tegra/fuse/fuse-tegra.c
+++ b/drivers/soc/tegra/fuse/fuse-tegra.c
@@ -15,9 +15,10 @@
*
*/
+#include <linux/clk.h>
#include <linux/device.h>
#include <linux/kobject.h>
-#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_address.h>
@@ -28,8 +29,6 @@
#include "fuse.h"
-static u32 (*fuse_readl)(const unsigned int offset);
-static int fuse_size;
struct tegra_sku_info tegra_sku_info;
EXPORT_SYMBOL(tegra_sku_info);
@@ -42,11 +41,11 @@ static const char *tegra_revision_name[TEGRA_REVISION_MAX] = {
[TEGRA_REVISION_A04] = "A04",
};
-static u8 fuse_readb(const unsigned int offset)
+static u8 fuse_readb(struct tegra_fuse *fuse, unsigned int offset)
{
u32 val;
- val = fuse_readl(round_down(offset, 4));
+ val = fuse->read(fuse, round_down(offset, 4));
val >>= (offset % 4) * 8;
val &= 0xff;
@@ -54,19 +53,21 @@ static u8 fuse_readb(const unsigned int offset)
}
static ssize_t fuse_read(struct file *fd, struct kobject *kobj,
- struct bin_attribute *attr, char *buf,
- loff_t pos, size_t size)
+ struct bin_attribute *attr, char *buf,
+ loff_t pos, size_t size)
{
+ struct device *dev = kobj_to_dev(kobj);
+ struct tegra_fuse *fuse = dev_get_drvdata(dev);
int i;
- if (pos < 0 || pos >= fuse_size)
+ if (pos < 0 || pos >= attr->size)
return 0;
- if (size > fuse_size - pos)
- size = fuse_size - pos;
+ if (size > attr->size - pos)
+ size = attr->size - pos;
for (i = 0; i < size; i++)
- buf[i] = fuse_readb(pos + i);
+ buf[i] = fuse_readb(fuse, pos + i);
return i;
}
@@ -76,89 +77,239 @@ static struct bin_attribute fuse_bin_attr = {
.read = fuse_read,
};
+static int tegra_fuse_create_sysfs(struct device *dev, unsigned int size,
+ const struct tegra_fuse_info *info)
+{
+ fuse_bin_attr.size = size;
+
+ return device_create_bin_file(dev, &fuse_bin_attr);
+}
+
static const struct of_device_id car_match[] __initconst = {
{ .compatible = "nvidia,tegra20-car", },
{ .compatible = "nvidia,tegra30-car", },
{ .compatible = "nvidia,tegra114-car", },
{ .compatible = "nvidia,tegra124-car", },
{ .compatible = "nvidia,tegra132-car", },
+ { .compatible = "nvidia,tegra210-car", },
{},
};
-static void tegra_enable_fuse_clk(void __iomem *base)
+static struct tegra_fuse *fuse = &(struct tegra_fuse) {
+ .base = NULL,
+ .soc = NULL,
+};
+
+static const struct of_device_id tegra_fuse_match[] = {
+#ifdef CONFIG_ARCH_TEGRA_210_SOC
+ { .compatible = "nvidia,tegra210-efuse", .data = &tegra210_fuse_soc },
+#endif
+#ifdef CONFIG_ARCH_TEGRA_132_SOC
+ { .compatible = "nvidia,tegra132-efuse", .data = &tegra124_fuse_soc },
+#endif
+#ifdef CONFIG_ARCH_TEGRA_124_SOC
+ { .compatible = "nvidia,tegra124-efuse", .data = &tegra124_fuse_soc },
+#endif
+#ifdef CONFIG_ARCH_TEGRA_114_SOC
+ { .compatible = "nvidia,tegra114-efuse", .data = &tegra114_fuse_soc },
+#endif
+#ifdef CONFIG_ARCH_TEGRA_3x_SOC
+ { .compatible = "nvidia,tegra30-efuse", .data = &tegra30_fuse_soc },
+#endif
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+ { .compatible = "nvidia,tegra20-efuse", .data = &tegra20_fuse_soc },
+#endif
+ { /* sentinel */ }
+};
+
+static int tegra_fuse_probe(struct platform_device *pdev)
{
- u32 reg;
+ void __iomem *base = fuse->base;
+ struct resource *res;
+ int err;
+
+ /* take over the memory region from the early initialization */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ fuse->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(fuse->base))
+ return PTR_ERR(fuse->base);
+
+ fuse->clk = devm_clk_get(&pdev->dev, "fuse");
+ if (IS_ERR(fuse->clk)) {
+ dev_err(&pdev->dev, "failed to get FUSE clock: %ld",
+ PTR_ERR(fuse->clk));
+ return PTR_ERR(fuse->clk);
+ }
- reg = readl_relaxed(base + 0x48);
- reg |= 1 << 28;
- writel(reg, base + 0x48);
+ platform_set_drvdata(pdev, fuse);
+ fuse->dev = &pdev->dev;
- /*
- * Enable FUSE clock. This needs to be hardcoded because the clock
- * subsystem is not active during early boot.
- */
- reg = readl(base + 0x14);
- reg |= 1 << 7;
- writel(reg, base + 0x14);
+ if (fuse->soc->probe) {
+ err = fuse->soc->probe(fuse);
+ if (err < 0)
+ return err;
+ }
+
+ if (tegra_fuse_create_sysfs(&pdev->dev, fuse->soc->info->size,
+ fuse->soc->info))
+ return -ENODEV;
+
+ /* release the early I/O memory mapping */
+ iounmap(base);
+
+ return 0;
+}
+
+static struct platform_driver tegra_fuse_driver = {
+ .driver = {
+ .name = "tegra-fuse",
+ .of_match_table = tegra_fuse_match,
+ .suppress_bind_attrs = true,
+ },
+ .probe = tegra_fuse_probe,
+};
+module_platform_driver(tegra_fuse_driver);
+
+bool __init tegra_fuse_read_spare(unsigned int spare)
+{
+ unsigned int offset = fuse->soc->info->spare + spare * 4;
+
+ return fuse->read_early(fuse, offset) & 1;
+}
+
+u32 __init tegra_fuse_read_early(unsigned int offset)
+{
+ return fuse->read_early(fuse, offset);
}
int tegra_fuse_readl(unsigned long offset, u32 *value)
{
- if (!fuse_readl)
+ if (!fuse->read)
return -EPROBE_DEFER;
- *value = fuse_readl(offset);
+ *value = fuse->read(fuse, offset);
return 0;
}
EXPORT_SYMBOL(tegra_fuse_readl);
-int tegra_fuse_create_sysfs(struct device *dev, int size,
- u32 (*readl)(const unsigned int offset))
+static void tegra_enable_fuse_clk(void __iomem *base)
{
- if (fuse_size)
- return -ENODEV;
-
- fuse_bin_attr.size = size;
- fuse_bin_attr.read = fuse_read;
+ u32 reg;
- fuse_size = size;
- fuse_readl = readl;
+ reg = readl_relaxed(base + 0x48);
+ reg |= 1 << 28;
+ writel(reg, base + 0x48);
- return device_create_bin_file(dev, &fuse_bin_attr);
+ /*
+ * Enable FUSE clock. This needs to be hardcoded because the clock
+ * subsystem is not active during early boot.
+ */
+ reg = readl(base + 0x14);
+ reg |= 1 << 7;
+ writel(reg, base + 0x14);
}
static int __init tegra_init_fuse(void)
{
+ const struct of_device_id *match;
struct device_node *np;
- void __iomem *car_base;
-
- if (!soc_is_tegra())
- return 0;
+ struct resource regs;
tegra_init_apbmisc();
- np = of_find_matching_node(NULL, car_match);
- car_base = of_iomap(np, 0);
- if (car_base) {
- tegra_enable_fuse_clk(car_base);
- iounmap(car_base);
+ np = of_find_matching_node_and_match(NULL, tegra_fuse_match, &match);
+ if (!np) {
+ /*
+ * Fall back to legacy initialization for 32-bit ARM only. All
+ * 64-bit ARM device tree files for Tegra are required to have
+ * a FUSE node.
+ *
+ * This is for backwards-compatibility with old device trees
+ * that didn't contain a FUSE node.
+ */
+ if (IS_ENABLED(CONFIG_ARM) && soc_is_tegra()) {
+ u8 chip = tegra_get_chip_id();
+
+ regs.start = 0x7000f800;
+ regs.end = 0x7000fbff;
+ regs.flags = IORESOURCE_MEM;
+
+ switch (chip) {
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+ case TEGRA20:
+ fuse->soc = &tegra20_fuse_soc;
+ break;
+#endif
+
+#ifdef CONFIG_ARCH_TEGRA_3x_SOC
+ case TEGRA30:
+ fuse->soc = &tegra30_fuse_soc;
+ break;
+#endif
+
+#ifdef CONFIG_ARCH_TEGRA_114_SOC
+ case TEGRA114:
+ fuse->soc = &tegra114_fuse_soc;
+ break;
+#endif
+
+#ifdef CONFIG_ARCH_TEGRA_124_SOC
+ case TEGRA124:
+ fuse->soc = &tegra124_fuse_soc;
+ break;
+#endif
+
+ default:
+ pr_warn("Unsupported SoC: %02x\n", chip);
+ break;
+ }
+ } else {
+ /*
+ * At this point we're not running on Tegra, so play
+ * nice with multi-platform kernels.
+ */
+ return 0;
+ }
} else {
- pr_err("Could not enable fuse clk. ioremap tegra car failed.\n");
+ /*
+ * Extract information from the device tree if we've found a
+ * matching node.
+ */
+ if (of_address_to_resource(np, 0, &regs) < 0) {
+ pr_err("failed to get FUSE register\n");
+ return -ENXIO;
+ }
+
+ fuse->soc = match->data;
+ }
+
+ np = of_find_matching_node(NULL, car_match);
+ if (np) {
+ void __iomem *base = of_iomap(np, 0);
+ if (base) {
+ tegra_enable_fuse_clk(base);
+ iounmap(base);
+ } else {
+ pr_err("failed to map clock registers\n");
+ return -ENXIO;
+ }
+ }
+
+ fuse->base = ioremap_nocache(regs.start, resource_size(&regs));
+ if (!fuse->base) {
+ pr_err("failed to map FUSE registers\n");
return -ENXIO;
}
- if (tegra_get_chip_id() == TEGRA20)
- tegra20_init_fuse_early();
- else
- tegra30_init_fuse_early();
+ fuse->soc->init(fuse);
- pr_info("Tegra Revision: %s SKU: %d CPU Process: %d Core Process: %d\n",
+ pr_info("Tegra Revision: %s SKU: %d CPU Process: %d SoC Process: %d\n",
tegra_revision_name[tegra_sku_info.revision],
tegra_sku_info.sku_id, tegra_sku_info.cpu_process_id,
- tegra_sku_info.core_process_id);
- pr_debug("Tegra CPU Speedo ID %d, Soc Speedo ID %d\n",
- tegra_sku_info.cpu_speedo_id, tegra_sku_info.soc_speedo_id);
+ tegra_sku_info.soc_process_id);
+ pr_debug("Tegra CPU Speedo ID %d, SoC Speedo ID %d\n",
+ tegra_sku_info.cpu_speedo_id, tegra_sku_info.soc_speedo_id);
return 0;
}
diff --git a/drivers/soc/tegra/fuse/fuse-tegra20.c b/drivers/soc/tegra/fuse/fuse-tegra20.c
index 6acc2c44e..294413a96 100644
--- a/drivers/soc/tegra/fuse/fuse-tegra20.c
+++ b/drivers/soc/tegra/fuse/fuse-tegra20.c
@@ -34,159 +34,107 @@
#include "fuse.h"
#define FUSE_BEGIN 0x100
-#define FUSE_SIZE 0x1f8
#define FUSE_UID_LOW 0x08
#define FUSE_UID_HIGH 0x0c
-static phys_addr_t fuse_phys;
-static struct clk *fuse_clk;
-static void __iomem __initdata *fuse_base;
-
-static DEFINE_MUTEX(apb_dma_lock);
-static DECLARE_COMPLETION(apb_dma_wait);
-static struct dma_chan *apb_dma_chan;
-static struct dma_slave_config dma_sconfig;
-static u32 *apb_buffer;
-static dma_addr_t apb_buffer_phys;
+static u32 tegra20_fuse_read_early(struct tegra_fuse *fuse, unsigned int offset)
+{
+ return readl_relaxed(fuse->base + FUSE_BEGIN + offset);
+}
static void apb_dma_complete(void *args)
{
- complete(&apb_dma_wait);
+ struct tegra_fuse *fuse = args;
+
+ complete(&fuse->apbdma.wait);
}
-static u32 tegra20_fuse_readl(const unsigned int offset)
+static u32 tegra20_fuse_read(struct tegra_fuse *fuse, unsigned int offset)
{
- int ret;
- u32 val = 0;
+ unsigned long flags = DMA_PREP_INTERRUPT | DMA_CTRL_ACK;
struct dma_async_tx_descriptor *dma_desc;
unsigned long time_left;
+ u32 value = 0;
+ int err;
+
+ mutex_lock(&fuse->apbdma.lock);
- mutex_lock(&apb_dma_lock);
+ fuse->apbdma.config.src_addr = fuse->apbdma.phys + FUSE_BEGIN + offset;
- dma_sconfig.src_addr = fuse_phys + FUSE_BEGIN + offset;
- ret = dmaengine_slave_config(apb_dma_chan, &dma_sconfig);
- if (ret)
+ err = dmaengine_slave_config(fuse->apbdma.chan, &fuse->apbdma.config);
+ if (err)
goto out;
- dma_desc = dmaengine_prep_slave_single(apb_dma_chan, apb_buffer_phys,
- sizeof(u32), DMA_DEV_TO_MEM,
- DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ dma_desc = dmaengine_prep_slave_single(fuse->apbdma.chan,
+ fuse->apbdma.phys,
+ sizeof(u32), DMA_DEV_TO_MEM,
+ flags);
if (!dma_desc)
goto out;
dma_desc->callback = apb_dma_complete;
- dma_desc->callback_param = NULL;
+ dma_desc->callback_param = fuse;
- reinit_completion(&apb_dma_wait);
+ reinit_completion(&fuse->apbdma.wait);
- clk_prepare_enable(fuse_clk);
+ clk_prepare_enable(fuse->clk);
dmaengine_submit(dma_desc);
- dma_async_issue_pending(apb_dma_chan);
- time_left = wait_for_completion_timeout(&apb_dma_wait,
+ dma_async_issue_pending(fuse->apbdma.chan);
+ time_left = wait_for_completion_timeout(&fuse->apbdma.wait,
msecs_to_jiffies(50));
if (WARN(time_left == 0, "apb read dma timed out"))
- dmaengine_terminate_all(apb_dma_chan);
+ dmaengine_terminate_all(fuse->apbdma.chan);
else
- val = *apb_buffer;
+ value = *fuse->apbdma.virt;
- clk_disable_unprepare(fuse_clk);
-out:
- mutex_unlock(&apb_dma_lock);
+ clk_disable_unprepare(fuse->clk);
- return val;
+out:
+ mutex_unlock(&fuse->apbdma.lock);
+ return value;
}
-static const struct of_device_id tegra20_fuse_of_match[] = {
- { .compatible = "nvidia,tegra20-efuse" },
- {},
-};
-
-static int apb_dma_init(void)
+static int tegra20_fuse_probe(struct tegra_fuse *fuse)
{
dma_cap_mask_t mask;
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
- apb_dma_chan = dma_request_channel(mask, NULL, NULL);
- if (!apb_dma_chan)
+
+ fuse->apbdma.chan = dma_request_channel(mask, NULL, NULL);
+ if (!fuse->apbdma.chan)
return -EPROBE_DEFER;
- apb_buffer = dma_alloc_coherent(NULL, sizeof(u32), &apb_buffer_phys,
- GFP_KERNEL);
- if (!apb_buffer) {
- dma_release_channel(apb_dma_chan);
+ fuse->apbdma.virt = dma_alloc_coherent(fuse->dev, sizeof(u32),
+ &fuse->apbdma.phys,
+ GFP_KERNEL);
+ if (!fuse->apbdma.virt) {
+ dma_release_channel(fuse->apbdma.chan);
return -ENOMEM;
}
- dma_sconfig.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
- dma_sconfig.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
- dma_sconfig.src_maxburst = 1;
- dma_sconfig.dst_maxburst = 1;
+ fuse->apbdma.config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ fuse->apbdma.config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ fuse->apbdma.config.src_maxburst = 1;
+ fuse->apbdma.config.dst_maxburst = 1;
- return 0;
-}
-
-static int tegra20_fuse_probe(struct platform_device *pdev)
-{
- struct resource *res;
- int err;
-
- fuse_clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(fuse_clk)) {
- dev_err(&pdev->dev, "missing clock");
- return PTR_ERR(fuse_clk);
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -EINVAL;
- fuse_phys = res->start;
-
- err = apb_dma_init();
- if (err)
- return err;
-
- if (tegra_fuse_create_sysfs(&pdev->dev, FUSE_SIZE, tegra20_fuse_readl))
- return -ENODEV;
-
- dev_dbg(&pdev->dev, "loaded\n");
+ init_completion(&fuse->apbdma.wait);
+ mutex_init(&fuse->apbdma.lock);
+ fuse->read = tegra20_fuse_read;
return 0;
}
-static struct platform_driver tegra20_fuse_driver = {
- .probe = tegra20_fuse_probe,
- .driver = {
- .name = "tegra20_fuse",
- .of_match_table = tegra20_fuse_of_match,
- }
+static const struct tegra_fuse_info tegra20_fuse_info = {
+ .read = tegra20_fuse_read,
+ .size = 0x1f8,
+ .spare = 0x100,
};
-static int __init tegra20_fuse_init(void)
-{
- return platform_driver_register(&tegra20_fuse_driver);
-}
-postcore_initcall(tegra20_fuse_init);
-
/* Early boot code. This code is called before the devices are created */
-u32 __init tegra20_fuse_early(const unsigned int offset)
-{
- return readl_relaxed(fuse_base + FUSE_BEGIN + offset);
-}
-
-bool __init tegra20_spare_fuse_early(int spare_bit)
-{
- u32 offset = spare_bit * 4;
- bool value;
-
- value = tegra20_fuse_early(offset + 0x100);
-
- return value;
-}
-
static void __init tegra20_fuse_add_randomness(void)
{
u32 randomness[7];
@@ -195,22 +143,27 @@ static void __init tegra20_fuse_add_randomness(void)
randomness[1] = tegra_read_straps();
randomness[2] = tegra_read_chipid();
randomness[3] = tegra_sku_info.cpu_process_id << 16;
- randomness[3] |= tegra_sku_info.core_process_id;
+ randomness[3] |= tegra_sku_info.soc_process_id;
randomness[4] = tegra_sku_info.cpu_speedo_id << 16;
randomness[4] |= tegra_sku_info.soc_speedo_id;
- randomness[5] = tegra20_fuse_early(FUSE_UID_LOW);
- randomness[6] = tegra20_fuse_early(FUSE_UID_HIGH);
+ randomness[5] = tegra_fuse_read_early(FUSE_UID_LOW);
+ randomness[6] = tegra_fuse_read_early(FUSE_UID_HIGH);
add_device_randomness(randomness, sizeof(randomness));
}
-void __init tegra20_init_fuse_early(void)
+static void __init tegra20_fuse_init(struct tegra_fuse *fuse)
{
- fuse_base = ioremap(TEGRA_FUSE_BASE, TEGRA_FUSE_SIZE);
+ fuse->read_early = tegra20_fuse_read_early;
tegra_init_revision();
- tegra20_init_speedo_data(&tegra_sku_info);
+ fuse->soc->speedo_init(&tegra_sku_info);
tegra20_fuse_add_randomness();
-
- iounmap(fuse_base);
}
+
+const struct tegra_fuse_soc tegra20_fuse_soc = {
+ .init = tegra20_fuse_init,
+ .speedo_init = tegra20_init_speedo_data,
+ .probe = tegra20_fuse_probe,
+ .info = &tegra20_fuse_info,
+};
diff --git a/drivers/soc/tegra/fuse/fuse-tegra30.c b/drivers/soc/tegra/fuse/fuse-tegra30.c
index 4d2f71bf6..882607bca 100644
--- a/drivers/soc/tegra/fuse/fuse-tegra30.c
+++ b/drivers/soc/tegra/fuse/fuse-tegra30.c
@@ -42,113 +42,33 @@
#define FUSE_HAS_REVISION_INFO BIT(0)
-enum speedo_idx {
- SPEEDO_TEGRA30 = 0,
- SPEEDO_TEGRA114,
- SPEEDO_TEGRA124,
-};
-
-struct tegra_fuse_info {
- int size;
- int spare_bit;
- enum speedo_idx speedo_idx;
-};
-
-static void __iomem *fuse_base;
-static struct clk *fuse_clk;
-static const struct tegra_fuse_info *fuse_info;
-
-u32 tegra30_fuse_readl(const unsigned int offset)
+#if defined(CONFIG_ARCH_TEGRA_3x_SOC) || \
+ defined(CONFIG_ARCH_TEGRA_114_SOC) || \
+ defined(CONFIG_ARCH_TEGRA_124_SOC) || \
+ defined(CONFIG_ARCH_TEGRA_132_SOC) || \
+ defined(CONFIG_ARCH_TEGRA_210_SOC)
+static u32 tegra30_fuse_read_early(struct tegra_fuse *fuse, unsigned int offset)
{
- u32 val;
-
- /*
- * early in the boot, the fuse clock will be enabled by
- * tegra_init_fuse()
- */
-
- if (fuse_clk)
- clk_prepare_enable(fuse_clk);
-
- val = readl_relaxed(fuse_base + FUSE_BEGIN + offset);
-
- if (fuse_clk)
- clk_disable_unprepare(fuse_clk);
-
- return val;
+ return readl_relaxed(fuse->base + FUSE_BEGIN + offset);
}
-static const struct tegra_fuse_info tegra30_info = {
- .size = 0x2a4,
- .spare_bit = 0x144,
- .speedo_idx = SPEEDO_TEGRA30,
-};
-
-static const struct tegra_fuse_info tegra114_info = {
- .size = 0x2a0,
- .speedo_idx = SPEEDO_TEGRA114,
-};
-
-static const struct tegra_fuse_info tegra124_info = {
- .size = 0x300,
- .speedo_idx = SPEEDO_TEGRA124,
-};
-
-static const struct of_device_id tegra30_fuse_of_match[] = {
- { .compatible = "nvidia,tegra30-efuse", .data = &tegra30_info },
- { .compatible = "nvidia,tegra114-efuse", .data = &tegra114_info },
- { .compatible = "nvidia,tegra124-efuse", .data = &tegra124_info },
- {},
-};
-
-static int tegra30_fuse_probe(struct platform_device *pdev)
+static u32 tegra30_fuse_read(struct tegra_fuse *fuse, unsigned int offset)
{
- const struct of_device_id *of_dev_id;
-
- of_dev_id = of_match_device(tegra30_fuse_of_match, &pdev->dev);
- if (!of_dev_id)
- return -ENODEV;
+ u32 value;
+ int err;
- fuse_clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(fuse_clk)) {
- dev_err(&pdev->dev, "missing clock");
- return PTR_ERR(fuse_clk);
+ err = clk_prepare_enable(fuse->clk);
+ if (err < 0) {
+ dev_err(fuse->dev, "failed to enable FUSE clock: %d\n", err);
+ return 0;
}
- platform_set_drvdata(pdev, NULL);
-
- if (tegra_fuse_create_sysfs(&pdev->dev, fuse_info->size,
- tegra30_fuse_readl))
- return -ENODEV;
+ value = readl_relaxed(fuse->base + FUSE_BEGIN + offset);
- dev_dbg(&pdev->dev, "loaded\n");
+ clk_disable_unprepare(fuse->clk);
- return 0;
-}
-
-static struct platform_driver tegra30_fuse_driver = {
- .probe = tegra30_fuse_probe,
- .driver = {
- .name = "tegra_fuse",
- .of_match_table = tegra30_fuse_of_match,
- }
-};
-
-static int __init tegra30_fuse_init(void)
-{
- return platform_driver_register(&tegra30_fuse_driver);
+ return value;
}
-postcore_initcall(tegra30_fuse_init);
-
-/* Early boot code. This code is called before the devices are created */
-
-typedef void (*speedo_f)(struct tegra_sku_info *sku_info);
-
-static speedo_f __initdata speedo_tbl[] = {
- [SPEEDO_TEGRA30] = tegra30_init_speedo_data,
- [SPEEDO_TEGRA114] = tegra114_init_speedo_data,
- [SPEEDO_TEGRA124] = tegra124_init_speedo_data,
-};
static void __init tegra30_fuse_add_randomness(void)
{
@@ -158,67 +78,83 @@ static void __init tegra30_fuse_add_randomness(void)
randomness[1] = tegra_read_straps();
randomness[2] = tegra_read_chipid();
randomness[3] = tegra_sku_info.cpu_process_id << 16;
- randomness[3] |= tegra_sku_info.core_process_id;
+ randomness[3] |= tegra_sku_info.soc_process_id;
randomness[4] = tegra_sku_info.cpu_speedo_id << 16;
randomness[4] |= tegra_sku_info.soc_speedo_id;
- randomness[5] = tegra30_fuse_readl(FUSE_VENDOR_CODE);
- randomness[6] = tegra30_fuse_readl(FUSE_FAB_CODE);
- randomness[7] = tegra30_fuse_readl(FUSE_LOT_CODE_0);
- randomness[8] = tegra30_fuse_readl(FUSE_LOT_CODE_1);
- randomness[9] = tegra30_fuse_readl(FUSE_WAFER_ID);
- randomness[10] = tegra30_fuse_readl(FUSE_X_COORDINATE);
- randomness[11] = tegra30_fuse_readl(FUSE_Y_COORDINATE);
+ randomness[5] = tegra_fuse_read_early(FUSE_VENDOR_CODE);
+ randomness[6] = tegra_fuse_read_early(FUSE_FAB_CODE);
+ randomness[7] = tegra_fuse_read_early(FUSE_LOT_CODE_0);
+ randomness[8] = tegra_fuse_read_early(FUSE_LOT_CODE_1);
+ randomness[9] = tegra_fuse_read_early(FUSE_WAFER_ID);
+ randomness[10] = tegra_fuse_read_early(FUSE_X_COORDINATE);
+ randomness[11] = tegra_fuse_read_early(FUSE_Y_COORDINATE);
add_device_randomness(randomness, sizeof(randomness));
}
-static void __init legacy_fuse_init(void)
+static void __init tegra30_fuse_init(struct tegra_fuse *fuse)
{
- switch (tegra_get_chip_id()) {
- case TEGRA30:
- fuse_info = &tegra30_info;
- break;
- case TEGRA114:
- fuse_info = &tegra114_info;
- break;
- case TEGRA124:
- case TEGRA132:
- fuse_info = &tegra124_info;
- break;
- default:
- return;
- }
+ fuse->read_early = tegra30_fuse_read_early;
+ fuse->read = tegra30_fuse_read;
- fuse_base = ioremap(TEGRA_FUSE_BASE, TEGRA_FUSE_SIZE);
+ tegra_init_revision();
+ fuse->soc->speedo_init(&tegra_sku_info);
+ tegra30_fuse_add_randomness();
}
+#endif
-bool __init tegra30_spare_fuse(int spare_bit)
-{
- u32 offset = fuse_info->spare_bit + spare_bit * 4;
+#ifdef CONFIG_ARCH_TEGRA_3x_SOC
+static const struct tegra_fuse_info tegra30_fuse_info = {
+ .read = tegra30_fuse_read,
+ .size = 0x2a4,
+ .spare = 0x144,
+};
- return tegra30_fuse_readl(offset) & 1;
-}
+const struct tegra_fuse_soc tegra30_fuse_soc = {
+ .init = tegra30_fuse_init,
+ .speedo_init = tegra30_init_speedo_data,
+ .info = &tegra30_fuse_info,
+};
+#endif
-void __init tegra30_init_fuse_early(void)
-{
- struct device_node *np;
- const struct of_device_id *of_match;
-
- np = of_find_matching_node_and_match(NULL, tegra30_fuse_of_match,
- &of_match);
- if (np) {
- fuse_base = of_iomap(np, 0);
- fuse_info = (struct tegra_fuse_info *)of_match->data;
- } else
- legacy_fuse_init();
-
- if (!fuse_base) {
- pr_warn("fuse DT node missing and unknown chip id: 0x%02x\n",
- tegra_get_chip_id());
- return;
- }
+#ifdef CONFIG_ARCH_TEGRA_114_SOC
+static const struct tegra_fuse_info tegra114_fuse_info = {
+ .read = tegra30_fuse_read,
+ .size = 0x2a0,
+ .spare = 0x180,
+};
- tegra_init_revision();
- speedo_tbl[fuse_info->speedo_idx](&tegra_sku_info);
- tegra30_fuse_add_randomness();
-}
+const struct tegra_fuse_soc tegra114_fuse_soc = {
+ .init = tegra30_fuse_init,
+ .speedo_init = tegra114_init_speedo_data,
+ .info = &tegra114_fuse_info,
+};
+#endif
+
+#if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
+static const struct tegra_fuse_info tegra124_fuse_info = {
+ .read = tegra30_fuse_read,
+ .size = 0x300,
+ .spare = 0x200,
+};
+
+const struct tegra_fuse_soc tegra124_fuse_soc = {
+ .init = tegra30_fuse_init,
+ .speedo_init = tegra124_init_speedo_data,
+ .info = &tegra124_fuse_info,
+};
+#endif
+
+#if defined(CONFIG_ARCH_TEGRA_210_SOC)
+static const struct tegra_fuse_info tegra210_fuse_info = {
+ .read = tegra30_fuse_read,
+ .size = 0x300,
+ .spare = 0x280,
+};
+
+const struct tegra_fuse_soc tegra210_fuse_soc = {
+ .init = tegra30_fuse_init,
+ .speedo_init = tegra210_init_speedo_data,
+ .info = &tegra210_fuse_info,
+};
+#endif
diff --git a/drivers/soc/tegra/fuse/fuse.h b/drivers/soc/tegra/fuse/fuse.h
index 3a398bf35..10c2076d5 100644
--- a/drivers/soc/tegra/fuse/fuse.h
+++ b/drivers/soc/tegra/fuse/fuse.h
@@ -19,53 +19,90 @@
#ifndef __DRIVERS_MISC_TEGRA_FUSE_H
#define __DRIVERS_MISC_TEGRA_FUSE_H
-#define TEGRA_FUSE_BASE 0x7000f800
-#define TEGRA_FUSE_SIZE 0x400
+#include <linux/dmaengine.h>
+#include <linux/types.h>
-int tegra_fuse_create_sysfs(struct device *dev, int size,
- u32 (*readl)(const unsigned int offset));
+struct tegra_fuse;
+
+struct tegra_fuse_info {
+ u32 (*read)(struct tegra_fuse *fuse, unsigned int offset);
+ unsigned int size;
+ unsigned int spare;
+};
+
+struct tegra_fuse_soc {
+ void (*init)(struct tegra_fuse *fuse);
+ void (*speedo_init)(struct tegra_sku_info *info);
+ int (*probe)(struct tegra_fuse *fuse);
+
+ const struct tegra_fuse_info *info;
+};
+
+struct tegra_fuse {
+ struct device *dev;
+ void __iomem *base;
+ phys_addr_t phys;
+ struct clk *clk;
+
+ u32 (*read_early)(struct tegra_fuse *fuse, unsigned int offset);
+ u32 (*read)(struct tegra_fuse *fuse, unsigned int offset);
+ const struct tegra_fuse_soc *soc;
+
+ /* APBDMA on Tegra20 */
+ struct {
+ struct mutex lock;
+ struct completion wait;
+ struct dma_chan *chan;
+ struct dma_slave_config config;
+ dma_addr_t phys;
+ u32 *virt;
+ } apbdma;
+};
-bool tegra30_spare_fuse(int bit);
-u32 tegra30_fuse_readl(const unsigned int offset);
-void tegra30_init_fuse_early(void);
void tegra_init_revision(void);
void tegra_init_apbmisc(void);
+bool __init tegra_fuse_read_spare(unsigned int spare);
+u32 __init tegra_fuse_read_early(unsigned int offset);
+
#ifdef CONFIG_ARCH_TEGRA_2x_SOC
void tegra20_init_speedo_data(struct tegra_sku_info *sku_info);
-bool tegra20_spare_fuse_early(int spare_bit);
-void tegra20_init_fuse_early(void);
-u32 tegra20_fuse_early(const unsigned int offset);
-#else
-static inline void tegra20_init_speedo_data(struct tegra_sku_info *sku_info) {}
-static inline bool tegra20_spare_fuse_early(int spare_bit)
-{
- return false;
-}
-static inline void tegra20_init_fuse_early(void) {}
-static inline u32 tegra20_fuse_early(const unsigned int offset)
-{
- return 0;
-}
#endif
-
#ifdef CONFIG_ARCH_TEGRA_3x_SOC
void tegra30_init_speedo_data(struct tegra_sku_info *sku_info);
-#else
-static inline void tegra30_init_speedo_data(struct tegra_sku_info *sku_info) {}
#endif
#ifdef CONFIG_ARCH_TEGRA_114_SOC
void tegra114_init_speedo_data(struct tegra_sku_info *sku_info);
-#else
-static inline void tegra114_init_speedo_data(struct tegra_sku_info *sku_info) {}
#endif
-#ifdef CONFIG_ARCH_TEGRA_124_SOC
+#if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
void tegra124_init_speedo_data(struct tegra_sku_info *sku_info);
-#else
-static inline void tegra124_init_speedo_data(struct tegra_sku_info *sku_info) {}
+#endif
+
+#ifdef CONFIG_ARCH_TEGRA_210_SOC
+void tegra210_init_speedo_data(struct tegra_sku_info *sku_info);
+#endif
+
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+extern const struct tegra_fuse_soc tegra20_fuse_soc;
+#endif
+
+#ifdef CONFIG_ARCH_TEGRA_3x_SOC
+extern const struct tegra_fuse_soc tegra30_fuse_soc;
+#endif
+
+#ifdef CONFIG_ARCH_TEGRA_114_SOC
+extern const struct tegra_fuse_soc tegra114_fuse_soc;
+#endif
+
+#if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
+extern const struct tegra_fuse_soc tegra124_fuse_soc;
+#endif
+
+#ifdef CONFIG_ARCH_TEGRA_210_SOC
+extern const struct tegra_fuse_soc tegra210_fuse_soc;
#endif
#endif
diff --git a/drivers/soc/tegra/fuse/speedo-tegra114.c b/drivers/soc/tegra/fuse/speedo-tegra114.c
index 2a6ca036f..1ba41ebbb 100644
--- a/drivers/soc/tegra/fuse/speedo-tegra114.c
+++ b/drivers/soc/tegra/fuse/speedo-tegra114.c
@@ -22,7 +22,7 @@
#include "fuse.h"
-#define CORE_PROCESS_CORNERS 2
+#define SOC_PROCESS_CORNERS 2
#define CPU_PROCESS_CORNERS 2
enum {
@@ -31,7 +31,7 @@ enum {
THRESHOLD_INDEX_COUNT,
};
-static const u32 __initconst core_process_speedos[][CORE_PROCESS_CORNERS] = {
+static const u32 __initconst soc_process_speedos[][SOC_PROCESS_CORNERS] = {
{1123, UINT_MAX},
{0, UINT_MAX},
};
@@ -74,8 +74,8 @@ static void __init rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info,
}
if (rev == TEGRA_REVISION_A01) {
- tmp = tegra30_fuse_readl(0x270) << 1;
- tmp |= tegra30_fuse_readl(0x26c);
+ tmp = tegra_fuse_read_early(0x270) << 1;
+ tmp |= tegra_fuse_read_early(0x26c);
if (!tmp)
sku_info->cpu_speedo_id = 0;
}
@@ -84,27 +84,27 @@ static void __init rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info,
void __init tegra114_init_speedo_data(struct tegra_sku_info *sku_info)
{
u32 cpu_speedo_val;
- u32 core_speedo_val;
+ u32 soc_speedo_val;
int threshold;
int i;
BUILD_BUG_ON(ARRAY_SIZE(cpu_process_speedos) !=
THRESHOLD_INDEX_COUNT);
- BUILD_BUG_ON(ARRAY_SIZE(core_process_speedos) !=
+ BUILD_BUG_ON(ARRAY_SIZE(soc_process_speedos) !=
THRESHOLD_INDEX_COUNT);
rev_sku_to_speedo_ids(sku_info, &threshold);
- cpu_speedo_val = tegra30_fuse_readl(0x12c) + 1024;
- core_speedo_val = tegra30_fuse_readl(0x134);
+ cpu_speedo_val = tegra_fuse_read_early(0x12c) + 1024;
+ soc_speedo_val = tegra_fuse_read_early(0x134);
for (i = 0; i < CPU_PROCESS_CORNERS; i++)
if (cpu_speedo_val < cpu_process_speedos[threshold][i])
break;
sku_info->cpu_process_id = i;
- for (i = 0; i < CORE_PROCESS_CORNERS; i++)
- if (core_speedo_val < core_process_speedos[threshold][i])
+ for (i = 0; i < SOC_PROCESS_CORNERS; i++)
+ if (soc_speedo_val < soc_process_speedos[threshold][i])
break;
- sku_info->core_process_id = i;
+ sku_info->soc_process_id = i;
}
diff --git a/drivers/soc/tegra/fuse/speedo-tegra124.c b/drivers/soc/tegra/fuse/speedo-tegra124.c
index 46362387d..a63a13410 100644
--- a/drivers/soc/tegra/fuse/speedo-tegra124.c
+++ b/drivers/soc/tegra/fuse/speedo-tegra124.c
@@ -24,7 +24,7 @@
#define CPU_PROCESS_CORNERS 2
#define GPU_PROCESS_CORNERS 2
-#define CORE_PROCESS_CORNERS 2
+#define SOC_PROCESS_CORNERS 2
#define FUSE_CPU_SPEEDO_0 0x14
#define FUSE_CPU_SPEEDO_1 0x2c
@@ -53,7 +53,7 @@ static const u32 __initconst gpu_process_speedos[][GPU_PROCESS_CORNERS] = {
{0, UINT_MAX},
};
-static const u32 __initconst core_process_speedos[][CORE_PROCESS_CORNERS] = {
+static const u32 __initconst soc_process_speedos[][SOC_PROCESS_CORNERS] = {
{2101, UINT_MAX},
{0, UINT_MAX},
};
@@ -119,19 +119,19 @@ void __init tegra124_init_speedo_data(struct tegra_sku_info *sku_info)
THRESHOLD_INDEX_COUNT);
BUILD_BUG_ON(ARRAY_SIZE(gpu_process_speedos) !=
THRESHOLD_INDEX_COUNT);
- BUILD_BUG_ON(ARRAY_SIZE(core_process_speedos) !=
+ BUILD_BUG_ON(ARRAY_SIZE(soc_process_speedos) !=
THRESHOLD_INDEX_COUNT);
- cpu_speedo_0_value = tegra30_fuse_readl(FUSE_CPU_SPEEDO_0);
+ cpu_speedo_0_value = tegra_fuse_read_early(FUSE_CPU_SPEEDO_0);
/* GPU Speedo is stored in CPU_SPEEDO_2 */
- sku_info->gpu_speedo_value = tegra30_fuse_readl(FUSE_CPU_SPEEDO_2);
+ sku_info->gpu_speedo_value = tegra_fuse_read_early(FUSE_CPU_SPEEDO_2);
- soc_speedo_0_value = tegra30_fuse_readl(FUSE_SOC_SPEEDO_0);
+ soc_speedo_0_value = tegra_fuse_read_early(FUSE_SOC_SPEEDO_0);
- cpu_iddq_value = tegra30_fuse_readl(FUSE_CPU_IDDQ);
- soc_iddq_value = tegra30_fuse_readl(FUSE_SOC_IDDQ);
- gpu_iddq_value = tegra30_fuse_readl(FUSE_GPU_IDDQ);
+ cpu_iddq_value = tegra_fuse_read_early(FUSE_CPU_IDDQ);
+ soc_iddq_value = tegra_fuse_read_early(FUSE_SOC_IDDQ);
+ gpu_iddq_value = tegra_fuse_read_early(FUSE_GPU_IDDQ);
sku_info->cpu_speedo_value = cpu_speedo_0_value;
@@ -143,7 +143,7 @@ void __init tegra124_init_speedo_data(struct tegra_sku_info *sku_info)
rev_sku_to_speedo_ids(sku_info, &threshold);
- sku_info->cpu_iddq_value = tegra30_fuse_readl(FUSE_CPU_IDDQ);
+ sku_info->cpu_iddq_value = tegra_fuse_read_early(FUSE_CPU_IDDQ);
for (i = 0; i < GPU_PROCESS_CORNERS; i++)
if (sku_info->gpu_speedo_value <
@@ -157,11 +157,11 @@ void __init tegra124_init_speedo_data(struct tegra_sku_info *sku_info)
break;
sku_info->cpu_process_id = i;
- for (i = 0; i < CORE_PROCESS_CORNERS; i++)
+ for (i = 0; i < SOC_PROCESS_CORNERS; i++)
if (soc_speedo_0_value <
- core_process_speedos[threshold][i])
+ soc_process_speedos[threshold][i])
break;
- sku_info->core_process_id = i;
+ sku_info->soc_process_id = i;
pr_debug("Tegra GPU Speedo ID=%d, Speedo Value=%d\n",
sku_info->gpu_speedo_id, sku_info->gpu_speedo_value);
diff --git a/drivers/soc/tegra/fuse/speedo-tegra20.c b/drivers/soc/tegra/fuse/speedo-tegra20.c
index eff1b63f3..5f7818bf6 100644
--- a/drivers/soc/tegra/fuse/speedo-tegra20.c
+++ b/drivers/soc/tegra/fuse/speedo-tegra20.c
@@ -28,11 +28,11 @@
#define CPU_SPEEDO_REDUND_MSBIT 39
#define CPU_SPEEDO_REDUND_OFFS (CPU_SPEEDO_REDUND_MSBIT - CPU_SPEEDO_MSBIT)
-#define CORE_SPEEDO_LSBIT 40
-#define CORE_SPEEDO_MSBIT 47
-#define CORE_SPEEDO_REDUND_LSBIT 48
-#define CORE_SPEEDO_REDUND_MSBIT 55
-#define CORE_SPEEDO_REDUND_OFFS (CORE_SPEEDO_REDUND_MSBIT - CORE_SPEEDO_MSBIT)
+#define SOC_SPEEDO_LSBIT 40
+#define SOC_SPEEDO_MSBIT 47
+#define SOC_SPEEDO_REDUND_LSBIT 48
+#define SOC_SPEEDO_REDUND_MSBIT 55
+#define SOC_SPEEDO_REDUND_OFFS (SOC_SPEEDO_REDUND_MSBIT - SOC_SPEEDO_MSBIT)
#define SPEEDO_MULT 4
@@ -56,7 +56,7 @@ static const u32 __initconst cpu_process_speedos[][PROCESS_CORNERS_NUM] = {
{316, 331, 383, UINT_MAX},
};
-static const u32 __initconst core_process_speedos[][PROCESS_CORNERS_NUM] = {
+static const u32 __initconst soc_process_speedos[][PROCESS_CORNERS_NUM] = {
{165, 195, 224, UINT_MAX},
{165, 195, 224, UINT_MAX},
{165, 195, 224, UINT_MAX},
@@ -69,7 +69,7 @@ void __init tegra20_init_speedo_data(struct tegra_sku_info *sku_info)
int i;
BUILD_BUG_ON(ARRAY_SIZE(cpu_process_speedos) != SPEEDO_ID_COUNT);
- BUILD_BUG_ON(ARRAY_SIZE(core_process_speedos) != SPEEDO_ID_COUNT);
+ BUILD_BUG_ON(ARRAY_SIZE(soc_process_speedos) != SPEEDO_ID_COUNT);
if (SPEEDO_ID_SELECT_0(sku_info->revision))
sku_info->soc_speedo_id = SPEEDO_ID_0;
@@ -80,8 +80,8 @@ void __init tegra20_init_speedo_data(struct tegra_sku_info *sku_info)
val = 0;
for (i = CPU_SPEEDO_MSBIT; i >= CPU_SPEEDO_LSBIT; i--) {
- reg = tegra20_spare_fuse_early(i) |
- tegra20_spare_fuse_early(i + CPU_SPEEDO_REDUND_OFFS);
+ reg = tegra_fuse_read_spare(i) |
+ tegra_fuse_read_spare(i + CPU_SPEEDO_REDUND_OFFS);
val = (val << 1) | (reg & 0x1);
}
val = val * SPEEDO_MULT;
@@ -94,17 +94,17 @@ void __init tegra20_init_speedo_data(struct tegra_sku_info *sku_info)
sku_info->cpu_process_id = i;
val = 0;
- for (i = CORE_SPEEDO_MSBIT; i >= CORE_SPEEDO_LSBIT; i--) {
- reg = tegra20_spare_fuse_early(i) |
- tegra20_spare_fuse_early(i + CORE_SPEEDO_REDUND_OFFS);
+ for (i = SOC_SPEEDO_MSBIT; i >= SOC_SPEEDO_LSBIT; i--) {
+ reg = tegra_fuse_read_spare(i) |
+ tegra_fuse_read_spare(i + SOC_SPEEDO_REDUND_OFFS);
val = (val << 1) | (reg & 0x1);
}
val = val * SPEEDO_MULT;
pr_debug("Core speedo value %u\n", val);
for (i = 0; i < (PROCESS_CORNERS_NUM - 1); i++) {
- if (val <= core_process_speedos[sku_info->soc_speedo_id][i])
+ if (val <= soc_process_speedos[sku_info->soc_speedo_id][i])
break;
}
- sku_info->core_process_id = i;
+ sku_info->soc_process_id = i;
}
diff --git a/drivers/soc/tegra/fuse/speedo-tegra210.c b/drivers/soc/tegra/fuse/speedo-tegra210.c
new file mode 100644
index 000000000..5373f4c16
--- /dev/null
+++ b/drivers/soc/tegra/fuse/speedo-tegra210.c
@@ -0,0 +1,184 @@
+/*
+ * Copyright (c) 2013-2015, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/bug.h>
+
+#include <soc/tegra/fuse.h>
+
+#include "fuse.h"
+
+#define CPU_PROCESS_CORNERS 2
+#define GPU_PROCESS_CORNERS 2
+#define SOC_PROCESS_CORNERS 3
+
+#define FUSE_CPU_SPEEDO_0 0x014
+#define FUSE_CPU_SPEEDO_1 0x02c
+#define FUSE_CPU_SPEEDO_2 0x030
+#define FUSE_SOC_SPEEDO_0 0x034
+#define FUSE_SOC_SPEEDO_1 0x038
+#define FUSE_SOC_SPEEDO_2 0x03c
+#define FUSE_CPU_IDDQ 0x018
+#define FUSE_SOC_IDDQ 0x040
+#define FUSE_GPU_IDDQ 0x128
+#define FUSE_FT_REV 0x028
+
+enum {
+ THRESHOLD_INDEX_0,
+ THRESHOLD_INDEX_1,
+ THRESHOLD_INDEX_COUNT,
+};
+
+static const u32 __initconst cpu_process_speedos[][CPU_PROCESS_CORNERS] = {
+ { 2119, UINT_MAX },
+ { 2119, UINT_MAX },
+};
+
+static const u32 __initconst gpu_process_speedos[][GPU_PROCESS_CORNERS] = {
+ { UINT_MAX, UINT_MAX },
+ { UINT_MAX, UINT_MAX },
+};
+
+static const u32 __initconst soc_process_speedos[][SOC_PROCESS_CORNERS] = {
+ { 1950, 2100, UINT_MAX },
+ { 1950, 2100, UINT_MAX },
+};
+
+static u8 __init get_speedo_revision(void)
+{
+ return tegra_fuse_read_spare(4) << 2 |
+ tegra_fuse_read_spare(3) << 1 |
+ tegra_fuse_read_spare(2) << 0;
+}
+
+static void __init rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info,
+ u8 speedo_rev, int *threshold)
+{
+ int sku = sku_info->sku_id;
+
+ /* Assign to default */
+ sku_info->cpu_speedo_id = 0;
+ sku_info->soc_speedo_id = 0;
+ sku_info->gpu_speedo_id = 0;
+ *threshold = THRESHOLD_INDEX_0;
+
+ switch (sku) {
+ case 0x00: /* Engineering SKU */
+ case 0x01: /* Engineering SKU */
+ case 0x07:
+ case 0x17:
+ case 0x27:
+ if (speedo_rev >= 2)
+ sku_info->gpu_speedo_id = 1;
+ break;
+
+ case 0x13:
+ if (speedo_rev >= 2)
+ sku_info->gpu_speedo_id = 1;
+
+ sku_info->cpu_speedo_id = 1;
+ break;
+
+ default:
+ pr_err("Tegra210: unknown SKU %#04x\n", sku);
+ /* Using the default for the error case */
+ break;
+ }
+}
+
+static int get_process_id(int value, const u32 *speedos, unsigned int num)
+{
+ unsigned int i;
+
+ for (i = 0; i < num; i++)
+ if (value < speedos[num])
+ return i;
+
+ return -EINVAL;
+}
+
+void __init tegra210_init_speedo_data(struct tegra_sku_info *sku_info)
+{
+ int cpu_speedo[3], soc_speedo[3], cpu_iddq, gpu_iddq, soc_iddq;
+ unsigned int index;
+ u8 speedo_revision;
+
+ BUILD_BUG_ON(ARRAY_SIZE(cpu_process_speedos) !=
+ THRESHOLD_INDEX_COUNT);
+ BUILD_BUG_ON(ARRAY_SIZE(gpu_process_speedos) !=
+ THRESHOLD_INDEX_COUNT);
+ BUILD_BUG_ON(ARRAY_SIZE(soc_process_speedos) !=
+ THRESHOLD_INDEX_COUNT);
+
+ /* Read speedo/IDDQ fuses */
+ cpu_speedo[0] = tegra_fuse_read_early(FUSE_CPU_SPEEDO_0);
+ cpu_speedo[1] = tegra_fuse_read_early(FUSE_CPU_SPEEDO_1);
+ cpu_speedo[2] = tegra_fuse_read_early(FUSE_CPU_SPEEDO_2);
+
+ soc_speedo[0] = tegra_fuse_read_early(FUSE_SOC_SPEEDO_0);
+ soc_speedo[1] = tegra_fuse_read_early(FUSE_SOC_SPEEDO_1);
+ soc_speedo[2] = tegra_fuse_read_early(FUSE_CPU_SPEEDO_2);
+
+ cpu_iddq = tegra_fuse_read_early(FUSE_CPU_IDDQ) * 4;
+ soc_iddq = tegra_fuse_read_early(FUSE_SOC_IDDQ) * 4;
+ gpu_iddq = tegra_fuse_read_early(FUSE_GPU_IDDQ) * 5;
+
+ /*
+ * Determine CPU, GPU and SoC speedo values depending on speedo fusing
+ * revision. Note that GPU speedo value is fused in CPU_SPEEDO_2.
+ */
+ speedo_revision = get_speedo_revision();
+ pr_info("Speedo Revision %u\n", speedo_revision);
+
+ if (speedo_revision >= 3) {
+ sku_info->cpu_speedo_value = cpu_speedo[0];
+ sku_info->gpu_speedo_value = cpu_speedo[2];
+ sku_info->soc_speedo_value = soc_speedo[0];
+ } else if (speedo_revision == 2) {
+ sku_info->cpu_speedo_value = (-1938 + (1095 * cpu_speedo[0] / 100)) / 10;
+ sku_info->gpu_speedo_value = (-1662 + (1082 * cpu_speedo[2] / 100)) / 10;
+ sku_info->soc_speedo_value = ( -705 + (1037 * soc_speedo[0] / 100)) / 10;
+ } else {
+ sku_info->cpu_speedo_value = 2100;
+ sku_info->gpu_speedo_value = cpu_speedo[2] - 75;
+ sku_info->soc_speedo_value = 1900;
+ }
+
+ if ((sku_info->cpu_speedo_value <= 0) ||
+ (sku_info->gpu_speedo_value <= 0) ||
+ (sku_info->soc_speedo_value <= 0)) {
+ WARN(1, "speedo value not fused\n");
+ return;
+ }
+
+ rev_sku_to_speedo_ids(sku_info, speedo_revision, &index);
+
+ sku_info->gpu_process_id = get_process_id(sku_info->gpu_speedo_value,
+ gpu_process_speedos[index],
+ GPU_PROCESS_CORNERS);
+
+ sku_info->cpu_process_id = get_process_id(sku_info->cpu_speedo_value,
+ cpu_process_speedos[index],
+ CPU_PROCESS_CORNERS);
+
+ sku_info->soc_process_id = get_process_id(sku_info->soc_speedo_value,
+ soc_process_speedos[index],
+ SOC_PROCESS_CORNERS);
+
+ pr_debug("Tegra GPU Speedo ID=%d, Speedo Value=%d\n",
+ sku_info->gpu_speedo_id, sku_info->gpu_speedo_value);
+}
diff --git a/drivers/soc/tegra/fuse/speedo-tegra30.c b/drivers/soc/tegra/fuse/speedo-tegra30.c
index b17f0dcdf..9b010b3ef 100644
--- a/drivers/soc/tegra/fuse/speedo-tegra30.c
+++ b/drivers/soc/tegra/fuse/speedo-tegra30.c
@@ -22,7 +22,7 @@
#include "fuse.h"
-#define CORE_PROCESS_CORNERS 1
+#define SOC_PROCESS_CORNERS 1
#define CPU_PROCESS_CORNERS 6
#define FUSE_SPEEDO_CALIB_0 0x14
@@ -54,7 +54,7 @@ enum {
THRESHOLD_INDEX_COUNT,
};
-static const u32 __initconst core_process_speedos[][CORE_PROCESS_CORNERS] = {
+static const u32 __initconst soc_process_speedos[][SOC_PROCESS_CORNERS] = {
{180},
{170},
{195},
@@ -93,25 +93,25 @@ static void __init fuse_speedo_calib(u32 *speedo_g, u32 *speedo_lp)
int bit_minus1;
int bit_minus2;
- reg = tegra30_fuse_readl(FUSE_SPEEDO_CALIB_0);
+ reg = tegra_fuse_read_early(FUSE_SPEEDO_CALIB_0);
*speedo_lp = (reg & 0xFFFF) * 4;
*speedo_g = ((reg >> 16) & 0xFFFF) * 4;
- ate_ver = tegra30_fuse_readl(FUSE_TEST_PROG_VER);
+ ate_ver = tegra_fuse_read_early(FUSE_TEST_PROG_VER);
pr_debug("Tegra ATE prog ver %d.%d\n", ate_ver/10, ate_ver%10);
if (ate_ver >= 26) {
- bit_minus1 = tegra30_spare_fuse(LP_SPEEDO_BIT_MINUS1);
- bit_minus1 |= tegra30_spare_fuse(LP_SPEEDO_BIT_MINUS1_R);
- bit_minus2 = tegra30_spare_fuse(LP_SPEEDO_BIT_MINUS2);
- bit_minus2 |= tegra30_spare_fuse(LP_SPEEDO_BIT_MINUS2_R);
+ bit_minus1 = tegra_fuse_read_spare(LP_SPEEDO_BIT_MINUS1);
+ bit_minus1 |= tegra_fuse_read_spare(LP_SPEEDO_BIT_MINUS1_R);
+ bit_minus2 = tegra_fuse_read_spare(LP_SPEEDO_BIT_MINUS2);
+ bit_minus2 |= tegra_fuse_read_spare(LP_SPEEDO_BIT_MINUS2_R);
*speedo_lp |= (bit_minus1 << 1) | bit_minus2;
- bit_minus1 = tegra30_spare_fuse(G_SPEEDO_BIT_MINUS1);
- bit_minus1 |= tegra30_spare_fuse(G_SPEEDO_BIT_MINUS1_R);
- bit_minus2 = tegra30_spare_fuse(G_SPEEDO_BIT_MINUS2);
- bit_minus2 |= tegra30_spare_fuse(G_SPEEDO_BIT_MINUS2_R);
+ bit_minus1 = tegra_fuse_read_spare(G_SPEEDO_BIT_MINUS1);
+ bit_minus1 |= tegra_fuse_read_spare(G_SPEEDO_BIT_MINUS1_R);
+ bit_minus2 = tegra_fuse_read_spare(G_SPEEDO_BIT_MINUS2);
+ bit_minus2 |= tegra_fuse_read_spare(G_SPEEDO_BIT_MINUS2_R);
*speedo_g |= (bit_minus1 << 1) | bit_minus2;
} else {
*speedo_lp |= 0x3;
@@ -121,7 +121,7 @@ static void __init fuse_speedo_calib(u32 *speedo_g, u32 *speedo_lp)
static void __init rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info)
{
- int package_id = tegra30_fuse_readl(FUSE_PACKAGE_INFO) & 0x0F;
+ int package_id = tegra_fuse_read_early(FUSE_PACKAGE_INFO) & 0x0F;
switch (sku_info->revision) {
case TEGRA_REVISION_A01:
@@ -246,19 +246,19 @@ static void __init rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info)
void __init tegra30_init_speedo_data(struct tegra_sku_info *sku_info)
{
u32 cpu_speedo_val;
- u32 core_speedo_val;
+ u32 soc_speedo_val;
int i;
BUILD_BUG_ON(ARRAY_SIZE(cpu_process_speedos) !=
THRESHOLD_INDEX_COUNT);
- BUILD_BUG_ON(ARRAY_SIZE(core_process_speedos) !=
+ BUILD_BUG_ON(ARRAY_SIZE(soc_process_speedos) !=
THRESHOLD_INDEX_COUNT);
rev_sku_to_speedo_ids(sku_info);
- fuse_speedo_calib(&cpu_speedo_val, &core_speedo_val);
+ fuse_speedo_calib(&cpu_speedo_val, &soc_speedo_val);
pr_debug("Tegra CPU speedo value %u\n", cpu_speedo_val);
- pr_debug("Tegra Core speedo value %u\n", core_speedo_val);
+ pr_debug("Tegra Core speedo value %u\n", soc_speedo_val);
for (i = 0; i < CPU_PROCESS_CORNERS; i++) {
if (cpu_speedo_val < cpu_process_speedos[threshold_index][i])
@@ -273,16 +273,16 @@ void __init tegra30_init_speedo_data(struct tegra_sku_info *sku_info)
sku_info->cpu_speedo_id = 1;
}
- for (i = 0; i < CORE_PROCESS_CORNERS; i++) {
- if (core_speedo_val < core_process_speedos[threshold_index][i])
+ for (i = 0; i < SOC_PROCESS_CORNERS; i++) {
+ if (soc_speedo_val < soc_process_speedos[threshold_index][i])
break;
}
- sku_info->core_process_id = i - 1;
+ sku_info->soc_process_id = i - 1;
- if (sku_info->core_process_id == -1) {
- pr_warn("Tegra CORE speedo value %3d out of range",
- core_speedo_val);
- sku_info->core_process_id = 0;
+ if (sku_info->soc_process_id == -1) {
+ pr_warn("Tegra SoC speedo value %3d out of range",
+ soc_speedo_val);
+ sku_info->soc_process_id = 0;
sku_info->soc_speedo_id = 1;
}
}
diff --git a/drivers/soc/tegra/fuse/tegra-apbmisc.c b/drivers/soc/tegra/fuse/tegra-apbmisc.c
index 73fad05d8..5b18f6ffa 100644
--- a/drivers/soc/tegra/fuse/tegra-apbmisc.c
+++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c
@@ -21,11 +21,10 @@
#include <linux/io.h>
#include <soc/tegra/fuse.h>
+#include <soc/tegra/common.h>
#include "fuse.h"
-#define APBMISC_BASE 0x70000800
-#define APBMISC_SIZE 0x64
#define FUSE_SKU_INFO 0x10
#define PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT 4
@@ -95,8 +94,8 @@ void __init tegra_init_revision(void)
rev = TEGRA_REVISION_A02;
break;
case 3:
- if (chip_id == TEGRA20 && (tegra20_spare_fuse_early(18) ||
- tegra20_spare_fuse_early(19)))
+ if (chip_id == TEGRA20 && (tegra_fuse_read_spare(18) ||
+ tegra_fuse_read_spare(19)))
rev = TEGRA_REVISION_A03p;
else
rev = TEGRA_REVISION_A03;
@@ -110,27 +109,74 @@ void __init tegra_init_revision(void)
tegra_sku_info.revision = rev;
- if (chip_id == TEGRA20)
- tegra_sku_info.sku_id = tegra20_fuse_early(FUSE_SKU_INFO);
- else
- tegra_sku_info.sku_id = tegra30_fuse_readl(FUSE_SKU_INFO);
+ tegra_sku_info.sku_id = tegra_fuse_read_early(FUSE_SKU_INFO);
}
void __init tegra_init_apbmisc(void)
{
+ struct resource apbmisc, straps;
struct device_node *np;
np = of_find_matching_node(NULL, apbmisc_match);
- apbmisc_base = of_iomap(np, 0);
- if (!apbmisc_base) {
- pr_warn("ioremap tegra apbmisc failed. using %08x instead\n",
- APBMISC_BASE);
- apbmisc_base = ioremap(APBMISC_BASE, APBMISC_SIZE);
+ if (!np) {
+ /*
+ * Fall back to legacy initialization for 32-bit ARM only. All
+ * 64-bit ARM device tree files for Tegra are required to have
+ * an APBMISC node.
+ *
+ * This is for backwards-compatibility with old device trees
+ * that didn't contain an APBMISC node.
+ */
+ if (IS_ENABLED(CONFIG_ARM) && soc_is_tegra()) {
+ /* APBMISC registers (chip revision, ...) */
+ apbmisc.start = 0x70000800;
+ apbmisc.end = 0x70000863;
+ apbmisc.flags = IORESOURCE_MEM;
+
+ /* strapping options */
+ if (tegra_get_chip_id() == TEGRA124) {
+ straps.start = 0x7000e864;
+ straps.end = 0x7000e867;
+ } else {
+ straps.start = 0x70000008;
+ straps.end = 0x7000000b;
+ }
+
+ straps.flags = IORESOURCE_MEM;
+
+ pr_warn("Using APBMISC region %pR\n", &apbmisc);
+ pr_warn("Using strapping options registers %pR\n",
+ &straps);
+ } else {
+ /*
+ * At this point we're not running on Tegra, so play
+ * nice with multi-platform kernels.
+ */
+ return;
+ }
+ } else {
+ /*
+ * Extract information from the device tree if we've found a
+ * matching node.
+ */
+ if (of_address_to_resource(np, 0, &apbmisc) < 0) {
+ pr_err("failed to get APBMISC registers\n");
+ return;
+ }
+
+ if (of_address_to_resource(np, 1, &straps) < 0) {
+ pr_err("failed to get strapping options registers\n");
+ return;
+ }
}
- strapping_base = of_iomap(np, 1);
+ apbmisc_base = ioremap_nocache(apbmisc.start, resource_size(&apbmisc));
+ if (!apbmisc_base)
+ pr_err("failed to map APBMISC registers\n");
+
+ strapping_base = ioremap_nocache(straps.start, resource_size(&straps));
if (!strapping_base)
- pr_err("ioremap tegra strapping_base failed\n");
+ pr_err("failed to map strapping options registers\n");
long_ram_code = of_property_read_bool(np, "nvidia,long-ram-code");
}
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index fa7036c4d..bc34cf748 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -17,6 +17,8 @@
*
*/
+#define pr_fmt(fmt) "tegra-pmc: " fmt
+
#include <linux/kernel.h>
#include <linux/clk.h>
#include <linux/clk/tegra.h>
@@ -457,7 +459,6 @@ static int tegra_io_rail_prepare(int id, unsigned long *request,
unsigned long *status, unsigned int *bit)
{
unsigned long rate, value;
- struct clk *clk;
*bit = id % 32;
@@ -476,12 +477,7 @@ static int tegra_io_rail_prepare(int id, unsigned long *request,
*request = IO_DPD2_REQ;
}
- clk = clk_get_sys(NULL, "pclk");
- if (IS_ERR(clk))
- return PTR_ERR(clk);
-
- rate = clk_get_rate(clk);
- clk_put(clk);
+ rate = clk_get_rate(pmc->clk);
tegra_pmc_writel(DPD_SAMPLE_ENABLE, DPD_SAMPLE);
@@ -535,8 +531,10 @@ int tegra_io_rail_power_on(int id)
tegra_pmc_writel(value, request);
err = tegra_io_rail_poll(status, mask, 0, 250);
- if (err < 0)
+ if (err < 0) {
+ pr_info("tegra_io_rail_poll() failed: %d\n", err);
return err;
+ }
tegra_io_rail_unprepare();
@@ -551,8 +549,10 @@ int tegra_io_rail_power_off(int id)
int err;
err = tegra_io_rail_prepare(id, &request, &status, &bit);
- if (err < 0)
+ if (err < 0) {
+ pr_info("tegra_io_rail_prepare() failed: %d\n", err);
return err;
+ }
mask = 1 << bit;
@@ -801,7 +801,6 @@ void tegra_pmc_init_tsense_reset(struct tegra_pmc *pmc)
out:
of_node_put(np);
- return;
}
static int tegra_pmc_probe(struct platform_device *pdev)
@@ -1002,7 +1001,56 @@ static const struct tegra_pmc_soc tegra124_pmc_soc = {
.has_gpu_clamps = true,
};
+static const char * const tegra210_powergates[] = {
+ [TEGRA_POWERGATE_CPU] = "crail",
+ [TEGRA_POWERGATE_3D] = "3d",
+ [TEGRA_POWERGATE_VENC] = "venc",
+ [TEGRA_POWERGATE_PCIE] = "pcie",
+ [TEGRA_POWERGATE_L2] = "l2",
+ [TEGRA_POWERGATE_MPE] = "mpe",
+ [TEGRA_POWERGATE_HEG] = "heg",
+ [TEGRA_POWERGATE_SATA] = "sata",
+ [TEGRA_POWERGATE_CPU1] = "cpu1",
+ [TEGRA_POWERGATE_CPU2] = "cpu2",
+ [TEGRA_POWERGATE_CPU3] = "cpu3",
+ [TEGRA_POWERGATE_CELP] = "celp",
+ [TEGRA_POWERGATE_CPU0] = "cpu0",
+ [TEGRA_POWERGATE_C0NC] = "c0nc",
+ [TEGRA_POWERGATE_C1NC] = "c1nc",
+ [TEGRA_POWERGATE_SOR] = "sor",
+ [TEGRA_POWERGATE_DIS] = "dis",
+ [TEGRA_POWERGATE_DISB] = "disb",
+ [TEGRA_POWERGATE_XUSBA] = "xusba",
+ [TEGRA_POWERGATE_XUSBB] = "xusbb",
+ [TEGRA_POWERGATE_XUSBC] = "xusbc",
+ [TEGRA_POWERGATE_VIC] = "vic",
+ [TEGRA_POWERGATE_IRAM] = "iram",
+ [TEGRA_POWERGATE_NVDEC] = "nvdec",
+ [TEGRA_POWERGATE_NVJPG] = "nvjpg",
+ [TEGRA_POWERGATE_AUD] = "aud",
+ [TEGRA_POWERGATE_DFD] = "dfd",
+ [TEGRA_POWERGATE_VE2] = "ve2",
+};
+
+static const u8 tegra210_cpu_powergates[] = {
+ TEGRA_POWERGATE_CPU0,
+ TEGRA_POWERGATE_CPU1,
+ TEGRA_POWERGATE_CPU2,
+ TEGRA_POWERGATE_CPU3,
+};
+
+static const struct tegra_pmc_soc tegra210_pmc_soc = {
+ .num_powergates = ARRAY_SIZE(tegra210_powergates),
+ .powergates = tegra210_powergates,
+ .num_cpu_powergates = ARRAY_SIZE(tegra210_cpu_powergates),
+ .cpu_powergates = tegra210_cpu_powergates,
+ .has_tsense_reset = true,
+ .has_gpu_clamps = true,
+};
+
static const struct of_device_id tegra_pmc_match[] = {
+ { .compatible = "nvidia,tegra210-pmc", .data = &tegra210_pmc_soc },
+ { .compatible = "nvidia,tegra132-pmc", .data = &tegra124_pmc_soc },
{ .compatible = "nvidia,tegra124-pmc", .data = &tegra124_pmc_soc },
{ .compatible = "nvidia,tegra114-pmc", .data = &tegra114_pmc_soc },
{ .compatible = "nvidia,tegra30-pmc", .data = &tegra30_pmc_soc },
@@ -1035,25 +1083,44 @@ static int __init tegra_pmc_early_init(void)
bool invert;
u32 value;
- if (!soc_is_tegra())
- return 0;
-
np = of_find_matching_node_and_match(NULL, tegra_pmc_match, &match);
if (!np) {
- pr_warn("PMC device node not found, disabling powergating\n");
-
- regs.start = 0x7000e400;
- regs.end = 0x7000e7ff;
- regs.flags = IORESOURCE_MEM;
-
- pr_warn("Using memory region %pR\n", &regs);
+ /*
+ * Fall back to legacy initialization for 32-bit ARM only. All
+ * 64-bit ARM device tree files for Tegra are required to have
+ * a PMC node.
+ *
+ * This is for backwards-compatibility with old device trees
+ * that didn't contain a PMC node. Note that in this case the
+ * SoC data can't be matched and therefore powergating is
+ * disabled.
+ */
+ if (IS_ENABLED(CONFIG_ARM) && soc_is_tegra()) {
+ pr_warn("DT node not found, powergating disabled\n");
+
+ regs.start = 0x7000e400;
+ regs.end = 0x7000e7ff;
+ regs.flags = IORESOURCE_MEM;
+
+ pr_warn("Using memory region %pR\n", &regs);
+ } else {
+ /*
+ * At this point we're not running on Tegra, so play
+ * nice with multi-platform kernels.
+ */
+ return 0;
+ }
} else {
- pmc->soc = match->data;
- }
+ /*
+ * Extract information from the device tree if we've found a
+ * matching node.
+ */
+ if (of_address_to_resource(np, 0, &regs) < 0) {
+ pr_err("failed to get PMC registers\n");
+ return -ENXIO;
+ }
- if (of_address_to_resource(np, 0, &regs) < 0) {
- pr_err("failed to get PMC registers\n");
- return -ENXIO;
+ pmc->soc = match->data;
}
pmc->base = ioremap_nocache(regs.start, resource_size(&regs));
@@ -1064,6 +1131,10 @@ static int __init tegra_pmc_early_init(void)
mutex_init(&pmc->powergates_lock);
+ /*
+ * Invert the interrupt polarity if a PMC device tree node exists and
+ * contains the nvidia,invert-interrupt property.
+ */
invert = of_property_read_bool(np, "nvidia,invert-interrupt");
value = tegra_pmc_readl(PMC_CNTRL);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-21 21:15:07 +0000