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spi: s3c64xx: Update binding documentation 

Samsung SPI driver now uses the generic SPI "cs-gpios"
binding so update the documentation accordingly.

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
[javier.martinez@collabora.co.uk: split changes and improve commit message]
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Naveen Krishna Chatradhi 2014-07-16 17:19:09 +02:00 committed by Mark Brown
parent 306972cedf
commit 797bf3a204
1 changed files with 3 additions and 5 deletions
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8
Documentation/devicetree/bindings/spi/spi-samsung.txt
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@ -42,15 +42,13 @@ Optional Board Specific Properties:
- num-cs: Specifies the number of chip select lines supported. If - num-cs: Specifies the number of chip select lines supported. If
not specified, the default number of chip select lines is set to 1. not specified, the default number of chip select lines is set to 1.
- cs-gpios: should specify GPIOs used for chipselects (see spi-bus.txt)
SPI Controller specific data in SPI slave nodes: SPI Controller specific data in SPI slave nodes:
- The spi slave nodes should provide the following information which is required - The spi slave nodes should provide the following information which is required
by the spi controller. by the spi controller.
- cs-gpio: A gpio specifier that specifies the gpio line used as
the slave select line by the spi controller. The format of the gpio
specifier depends on the gpio controller.
- samsung,spi-feedback-delay: The sampling phase shift to be applied on the - samsung,spi-feedback-delay: The sampling phase shift to be applied on the
miso line (to account for any lag in the miso line). The following are the miso line (to account for any lag in the miso line). The following are the
valid values. valid values.
@ -85,6 +83,7 @@ Example:
#size-cells = <0>; #size-cells = <0>;
pinctrl-names = "default"; pinctrl-names = "default";
pinctrl-0 = <&spi0_bus>; pinctrl-0 = <&spi0_bus>;
cs-gpios = <&gpa2 5 0>;
w25q80bw@0 { w25q80bw@0 {
#address-cells = <1>; #address-cells = <1>;
@ -94,7 +93,6 @@ Example:
spi-max-frequency = <10000>; spi-max-frequency = <10000>;
controller-data { controller-data {
cs-gpio = <&gpa2 5 1 0 3>;
samsung,spi-feedback-delay = <0>; samsung,spi-feedback-delay = <0>;
}; };