i2c: rcar: add compatible entry for r8a7791

While we are here, also brush up the devicetree binding documentation.
The example was an inappropriate copy from the sh_mobile driver.

Signed-off-by: Wolfram Sang <wsa@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

1 files changed, 10 insertions, 4 deletions

diff --git a/Documentation/devicetree/bindings/i2c/i2c-rcar.txt b/Documentation/devicetree/bindings/i2c/i2c-rcar.txt
index 897cfcd5ce92..dd8b2dd1edeb 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-rcar.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-rcar.txt
@@ -6,6 +6,7 @@ Required properties:
         "renesas,i2c-r8a7778"
         "renesas,i2c-r8a7779"
         "renesas,i2c-r8a7790"
+        "renesas,i2c-r8a7791"
 - reg: physical base address of the controller and length of memory mapped
   region.
 - interrupts: interrupt specifier.
@@ -13,11 +14,16 @@ Required properties:
 Optional properties:
 - clock-frequency: desired I2C bus clock frequency in Hz. The absence of this
   propoerty indicates the default frequency 100 kHz.
+- clocks: clock specifier.
 
 Examples :
 
-i2c0: i2c@e6500000 {
-        compatible = "renesas,i2c-rcar-h2";
-        reg = <0 0xe6500000 0 0x428>;
-        interrupts = <0 174 0x4>;
+i2c0: i2c@e6508000 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        compatible = "renesas,i2c-r8a7791";
+        reg = <0 0xe6508000 0 0x40>;
+        interrupts = <0 287 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&mstp9_clks R8A7791_CLK_I2C0>;
+        clock-frequency = <400000>;
 };