i2c: rk3x: sync with i2c-next branch

[firefly-linux-kernel-4.4.55.git] / Documentation / devicetree / bindings / i2c / i2c-rk3x.txt

diff --git a/Documentation/devicetree/bindings/i2c/i2c-rk3x.txt b/Documentation/devicetree/bindings/i2c/i2c-rk3x.txt
index 7a5d98890bd2eb0b436041210885a3e6161c1f64..bbc5a1ed5fa188557a4c45828ea8ba5d65f46893 100644 (file)
--- a/Documentation/devicetree/bindings/i2c/i2c-rk3x.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-rk3x.txt
@@ -6,16 +6,20 @@ RK3xxx SoCs.
 Required properties :
 
  - reg : Offset and length of the register set for the device
- - compatible: should be one of the followings
+ - compatible: should be one of the following:
    - "rockchip,rk3066-i2c": for rk3066
    - "rockchip,rk3188-i2c": for rk3188
+   - "rockchip,rk3228-i2c": for rk3228
    - "rockchip,rk3288-i2c": for rk3288
    - "rockchip,rk3399-i2c": for rk3399
  - interrupts : interrupt number
- - clocks:
-   - clk(function): APB clock and function clock is the same clock for rk3066,
-                   rk3188 and rk3288. but separated at rk3399.
-   - pclk(APB): It is just required for rk3399.
+ - clocks: See ../clock/clock-bindings.txt
+   - For older hardware (rk3066, rk3188, rk3228, rk3288):
+     - There is one clock that's used both to derive the functional clock
+       for the device and as the bus clock.
+   - For newer hardware (rk3399): specified by name
+     - "i2c": This is used to derive the functional clock.
+     - "pclk": This is the bus clock.
 
 Required on RK3066, RK3188 :
 
@@ -38,8 +42,6 @@ Optional properties :
  - i2c-sda-falling-time-ns : Number of nanoseconds the SDA signal takes to fall
        (t(f) in the I2C specification). If not specified we'll use the SCL
        value since they are the same in nearly all cases.
- - input-clk-rate : frequency rate of function clock used(in Hz). If omitted,
-       the default clock rate is used. It is just used at rk3399 soc.
 
 Example:
 
@@ -47,7 +49,6 @@ aliases {
        i2c0 = &i2c0;
 }
 
-rk3066, rk3188 and rk3288:
 i2c0: i2c@2002d000 {
        compatible = "rockchip,rk3188-i2c";
        reg = <0x2002d000 0x1000>;
@@ -63,20 +64,3 @@ i2c0: i2c@2002d000 {
        i2c-scl-rising-time-ns = <800>;
        i2c-scl-falling-time-ns = <100>;
 };
-
-rk3399:
-i2c0: i2c@2002d000 {
-       compatible = "rockchip,rk3399-i2c";
-       reg = <0x2002d000 0x1000>;
-       interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
-       #address-cells = <1>;
-       #size-cells = <0>;
-
-       clock-names = "i2c", "pclk";
-       clocks = <&cru SCLK_I2C0_PMU>, <&cru PCLK_I2C0_PMU>;
-       input-clk-rate = <200000000>;
-
-       i2c-scl-rising-time-ns = <50>;
-       i2c-scl-falling-time-ns = <20>;
-       clock-frequency = <1700000>;
-};