diff options
Diffstat (limited to 'arch/arm/mach-pxa/pxa3xx.c')
| -rw-r--r-- | arch/arm/mach-pxa/pxa3xx.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c index bd4cbef15..20ce2d386 100644 --- a/arch/arm/mach-pxa/pxa3xx.c +++ b/arch/arm/mach-pxa/pxa3xx.c @@ -42,6 +42,14 @@ #define PECR_IS(n) ((1 << ((n) * 2)) << 29) extern void __init pxa_dt_irq_init(int (*fn)(struct irq_data *, unsigned int)); + +/* + * NAND NFC: DFI bus arbitration subset + */ +#define NDCR (*(volatile u32 __iomem*)(NAND_VIRT + 0)) +#define NDCR_ND_ARB_EN (1 << 12) +#define NDCR_ND_ARB_CNTL (1 << 19) + #ifdef CONFIG_PM #define ISRAM_START 0x5c000000 @@ -325,7 +333,7 @@ static void __init pxa_init_ext_wakeup_irq(int (*fn)(struct irq_data *, for (irq = IRQ_WAKEUP0; irq <= IRQ_WAKEUP1; irq++) { irq_set_chip_and_handler(irq, &pxa_ext_wakeup_chip, handle_edge_irq); - set_irq_flags(irq, IRQF_VALID); + irq_clear_status_flags(irq, IRQ_NOREQUEST); } pxa_ext_wakeup_chip.irq_set_wake = fn; @@ -362,7 +370,12 @@ static struct map_desc pxa3xx_io_desc[] __initdata = { .pfn = __phys_to_pfn(PXA3XX_SMEMC_BASE), .length = SMEMC_SIZE, .type = MT_DEVICE - } + }, { + .virtual = (unsigned long)NAND_VIRT, + .pfn = __phys_to_pfn(NAND_PHYS), + .length = NAND_SIZE, + .type = MT_DEVICE + }, }; void __init pxa3xx_map_io(void) @@ -394,7 +407,6 @@ static struct platform_device *devices[] __initdata = { &pxa_device_asoc_ssp3, &pxa_device_asoc_ssp4, &pxa_device_asoc_platform, - &sa1100_device_rtc, &pxa_device_rtc, &pxa3xx_device_ssp1, &pxa3xx_device_ssp2, @@ -420,6 +432,13 @@ static int __init pxa3xx_init(void) */ ASCR &= ~(ASCR_RDH | ASCR_D1S | ASCR_D2S | ASCR_D3S); + /* + * Disable DFI bus arbitration, to prevent a system bus lock if + * somebody disables the NAND clock (unused clock) while this + * bit remains set. + */ + NDCR = (NDCR & ~NDCR_ND_ARB_EN) | NDCR_ND_ARB_CNTL; + if ((ret = pxa_init_dma(IRQ_DMA, 32))) return ret; @@ -431,6 +450,7 @@ static int __init pxa3xx_init(void) if (of_have_populated_dt()) return 0; + pxa2xx_set_dmac_info(32); ret = platform_add_devices(devices, ARRAY_SIZE(devices)); if (ret) return ret; |