[v3,2/3] dt-bindings: i2c: designware: add optional pinctrl for bus recovery

Message ID 20180917112830.2a3c9be9@xhacker.debian
State New
Headers show
Series
  • i2c: designware: select gpio/default pin when prepare/unprepare recovery
Related show

Commit Message

Jisheng Zhang Sept. 17, 2018, 3:28 a.m.
Document the pinctrl property for bus recovery.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
---
 Documentation/devicetree/bindings/i2c/i2c-designware.txt | 6 ++++++
 1 file changed, 6 insertions(+)

Comments

Jisheng Zhang Sept. 17, 2018, 3:33 a.m. | #1
+ DT maintainers

On Mon, 17 Sep 2018 11:28:30 +0800
Jisheng Zhang <Jisheng.Zhang@synaptics.com> wrote:

> Document the pinctrl property for bus recovery.
> 
> Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
> ---
>  Documentation/devicetree/bindings/i2c/i2c-designware.txt | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-designware.txt b/Documentation/devicetree/bindings/i2c/i2c-designware.txt
> index 1d6a6a8061ba..c1544d1f7b55 100644
> --- a/Documentation/devicetree/bindings/i2c/i2c-designware.txt
> +++ b/Documentation/devicetree/bindings/i2c/i2c-designware.txt
> @@ -24,6 +24,9 @@ Optional properties :
>  
>   - sda-gpios: specify the gpio of the SDA line for gpio recovery
>  
> + - pinctrl: add extra pinctrl to configure i2c pins to gpio function for i2c
> +   bus recovery, call it "gpio" state
> +
>  Examples :
>  
>  	i2c@f0000 {
> @@ -46,6 +49,9 @@ Examples :
>  		i2c-sda-hold-time-ns = <300>;
>  		i2c-sda-falling-time-ns = <300>;
>  		i2c-scl-falling-time-ns = <300>;
> +		pinctrl-names = "default", "gpio";
> +		pinctrl-0 = <&pinctrl_i2c1>;
> +		pinctrl-1 = <&pinctrl_i2c1_gpio>;
>  		scl-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>;
>  		sda-gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>;
>  	};

Patch

diff --git a/Documentation/devicetree/bindings/i2c/i2c-designware.txt b/Documentation/devicetree/bindings/i2c/i2c-designware.txt
index 1d6a6a8061ba..c1544d1f7b55 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-designware.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-designware.txt
@@ -24,6 +24,9 @@  Optional properties :
 
  - sda-gpios: specify the gpio of the SDA line for gpio recovery
 
+ - pinctrl: add extra pinctrl to configure i2c pins to gpio function for i2c
+   bus recovery, call it "gpio" state
+
 Examples :
 
 	i2c@f0000 {
@@ -46,6 +49,9 @@  Examples :
 		i2c-sda-hold-time-ns = <300>;
 		i2c-sda-falling-time-ns = <300>;
 		i2c-scl-falling-time-ns = <300>;
+		pinctrl-names = "default", "gpio";
+		pinctrl-0 = <&pinctrl_i2c1>;
+		pinctrl-1 = <&pinctrl_i2c1_gpio>;
 		scl-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>;
 		sda-gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>;
 	};