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-rw-r--r--Documentation/devicetree/bindings/spi/spi-samsung.txt15
1 files changed, 14 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/spi/spi-samsung.txt b/Documentation/devicetree/bindings/spi/spi-samsung.txt
index 6dbdeb3c3..49028a4f5 100644
--- a/Documentation/devicetree/bindings/spi/spi-samsung.txt
+++ b/Documentation/devicetree/bindings/spi/spi-samsung.txt
@@ -9,7 +9,8 @@ Required SoC Specific Properties:
- samsung,s3c2443-spi: for s3c2443, s3c2416 and s3c2450 platforms
- samsung,s3c6410-spi: for s3c6410 platforms
- samsung,s5pv210-spi: for s5pv210 and s5pc110 platforms
- - samsung,exynos7-spi: for exynos7 platforms
+ - samsung,exynos5433-spi: for exynos5433 compatible controllers
+ - samsung,exynos7-spi: for exynos7 platforms <DEPRECATED>
- reg: physical base address of the controller and length of memory mapped
region.
@@ -23,6 +24,15 @@ Required SoC Specific Properties:
- dma-names: Names for the dma channels. There must be at least one channel
named "tx" for transmit and named "rx" for receive.
+- clocks: specifies the clock IDs provided to the SPI controller; they are
+ required for interacting with the controller itself, for synchronizing the bus
+ and as I/O clock (the latter is required by exynos5433 and exynos7).
+
+- clock-names: string names of the clocks in the 'clocks' property; for all the
+ the devices the names must be "spi", "spi_busclkN" (where N is determined by
+ "samsung,spi-src-clk"), while Exynos5433 should specify a third clock
+ "spi_ioclk" for the I/O clock.
+
Required Board Specific Properties:
- #address-cells: should be 1.
@@ -40,6 +50,9 @@ Optional Board Specific Properties:
- cs-gpios: should specify GPIOs used for chipselects (see spi-bus.txt)
+- no-cs-readback: the CS line is disconnected, therefore the device should not
+ operate based on CS signalling.
+
SPI Controller specific data in SPI slave nodes:
- The spi slave nodes should provide the following information which is required