[v10,6/8] dt-bindings: i2c: rk3x: add support for rk3399
diff mbox

Message ID 1463407452-41418-1-git-send-email-david.wu@rock-chips.com
State New
Headers show

Commit Message

David Wu May 16, 2016, 2:04 p.m. UTC
The bus clock and function clock are separated at rk3399,
and others use one clock as the bus clock and function clock.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Heiko Stuebner <heiko@sntech.de>
---
Change in v10:
- none

Change in v9:
- remove unnecessary "REQUIRED".

Change in v8:
- remove error description.

 Documentation/devicetree/bindings/i2c/i2c-rk3x.txt | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

Comments

Rob Herring May 16, 2016, 4:45 p.m. UTC | #1
On Mon, May 16, 2016 at 10:04:12PM +0800, David Wu wrote:
> The bus clock and function clock are separated at rk3399,
> and others use one clock as the bus clock and function clock.
> 
> Signed-off-by: David Wu <david.wu@rock-chips.com>
> Reviewed-by: Douglas Anderson <dianders@chromium.org>
> Reviewed-by: Heiko Stuebner <heiko@sntech.de>
> Tested-by: Heiko Stuebner <heiko@sntech.de>
> ---
> Change in v10:
> - none
> 
> Change in v9:
> - remove unnecessary "REQUIRED".
> 
> Change in v8:
> - remove error description.
> 
>  Documentation/devicetree/bindings/i2c/i2c-rk3x.txt | 16 +++++++++++++---
>  1 file changed, 13 insertions(+), 3 deletions(-)

Acked-by: Rob Herring <robh@kernel.org>

Patch
diff mbox

diff --git a/Documentation/devicetree/bindings/i2c/i2c-rk3x.txt b/Documentation/devicetree/bindings/i2c/i2c-rk3x.txt
index 0b4a85f..bbc5a1e 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-rk3x.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-rk3x.txt
@@ -6,10 +6,20 @@  RK3xxx SoCs.
 Required properties :
 
  - reg : Offset and length of the register set for the device
- - compatible : should be "rockchip,rk3066-i2c", "rockchip,rk3188-i2c",
-		"rockchip,rk3228-i2c" or "rockchip,rk3288-i2c".
+ - 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 : parent clock
+ - 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 :