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>

diff --git a/Documentation/devicetree/bindings/spi/spi-samsung.txt b/Documentation/devicetree/bindings/spi/spi-samsung.txt
index 86aa061f069fda0d8e9e38f3eb04a06b8d2325ef..2d29dacdfed1c3829f08aa4c8dd5f4af34dd4dbc 100644 (file)
--- a/Documentation/devicetree/bindings/spi/spi-samsung.txt
+++ b/Documentation/devicetree/bindings/spi/spi-samsung.txt
@@ -42,15 +42,13 @@ Optional Board Specific Properties:
 - num-cs: Specifies the number of chip select lines supported. If
   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:
 
 - The spi slave nodes should provide the following information which is required
   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
     miso line (to account for any lag in the miso line). The following are the
     valid values.
@@ -85,6 +83,7 @@ Example:
                #size-cells = <0>;
                pinctrl-names = "default";
                pinctrl-0 = <&spi0_bus>;
+               cs-gpios = <&gpa2 5 0>;
 
                w25q80bw@0 {
                        #address-cells = <1>;
@@ -94,7 +93,6 @@ Example:
                        spi-max-frequency = <10000>;
 
                        controller-data {
-                               cs-gpio = <&gpa2 5 1 0 3>;
                                samsung,spi-feedback-delay = <0>;
                        };