[v3,1/3] dt-bindings: i2c: designware: add optional gpio recovery properties

Message ID 20180917112741.7c3d6514@xhacker.debian
State New
Headers show
Series
  • i2c: designware: select gpio/default pin when prepare/unprepare recovery
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Commit Message

Jisheng Zhang Sept. 17, 2018, 3:27 a.m.
Document the scl-gpios and sda-gpios properties 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, 3:32 a.m. | #1
+ DT maintainers

On Mon, 17 Sep 2018 11:27:41 +0800
Jisheng Zhang <Jisheng.Zhang@synaptics.com> wrote:

> Document the scl-gpios and sda-gpios properties 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 fbb0a6d8b964..1d6a6a8061ba 100644
> --- a/Documentation/devicetree/bindings/i2c/i2c-designware.txt
> +++ b/Documentation/devicetree/bindings/i2c/i2c-designware.txt
> @@ -20,6 +20,10 @@ Optional properties :
>   - i2c-sda-falling-time-ns : should contain the SDA falling time in nanoseconds.
>     This value which is by default 300ns is used to compute the tHIGH period.
>  
> + - scl-gpios: specify the gpio of the SCL line for gpio recovery
> +
> + - sda-gpios: specify the gpio of the SDA line for gpio recovery
> +
>  Examples :
>  
>  	i2c@f0000 {
> @@ -42,6 +46,8 @@ Examples :
>  		i2c-sda-hold-time-ns = <300>;
>  		i2c-sda-falling-time-ns = <300>;
>  		i2c-scl-falling-time-ns = <300>;
> +		scl-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>;
> +		sda-gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>;
>  	};
>  
>  	i2c@1120000 {

Patch

diff --git a/Documentation/devicetree/bindings/i2c/i2c-designware.txt b/Documentation/devicetree/bindings/i2c/i2c-designware.txt
index fbb0a6d8b964..1d6a6a8061ba 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-designware.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-designware.txt
@@ -20,6 +20,10 @@  Optional properties :
  - i2c-sda-falling-time-ns : should contain the SDA falling time in nanoseconds.
    This value which is by default 300ns is used to compute the tHIGH period.
 
+ - scl-gpios: specify the gpio of the SCL line for gpio recovery
+
+ - sda-gpios: specify the gpio of the SDA line for gpio recovery
+
 Examples :
 
 	i2c@f0000 {
@@ -42,6 +46,8 @@  Examples :
 		i2c-sda-hold-time-ns = <300>;
 		i2c-sda-falling-time-ns = <300>;
 		i2c-scl-falling-time-ns = <300>;
+		scl-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>;
+		sda-gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>;
 	};
 
 	i2c@1120000 {