linux-kernel - Re: [PATCH] ARM: dts: at91-sama5d27

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Message-ID: <6b8db824-bd2a-ebfa-4af6-261aa6d985bc@microchip.com>
Date:   Thu, 21 Jan 2021 15:27:14 +0100
From:   Nicolas Ferre <nicolas.ferre@...rochip.com>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>
CC:     <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>,
        Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
Subject: Re: [PATCH] ARM: dts: at91-sama5d27_wlsom1: add i2c recovery

On 17/01/2021 at 19:35, nicolas.ferre@...rochip.com wrote:
> From: Nicolas Ferre <nicolas.ferre@...rochip.com>
> 
> Add the i2c gpio pinctrls to support the i2c bus recovery on this board.
> 
> Signed-off-by: Nicolas Ferre <nicolas.ferre@...rochip.com>
> Reviewed-by: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>

added to at91-dt.

Regards,
   Nicolas

> ---
>   arch/arm/boot/dts/at91-sama5d27_wlsom1.dtsi | 22 +++++++++++++++++++--
>   1 file changed, 20 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/at91-sama5d27_wlsom1.dtsi b/arch/arm/boot/dts/at91-sama5d27_wlsom1.dtsi
> index a06700e53e4c..025a78310e3a 100644
> --- a/arch/arm/boot/dts/at91-sama5d27_wlsom1.dtsi
> +++ b/arch/arm/boot/dts/at91-sama5d27_wlsom1.dtsi
> @@ -43,14 +43,20 @@ uart6: serial@200 {
>   
>   &i2c0 {
>   	pinctrl-0 = <&pinctrl_i2c0_default>;
> -	pinctrl-names = "default";
> +	pinctrl-1 = <&pinctrl_i2c0_gpio>;
> +	pinctrl-names = "default", "gpio";
> +	sda-gpios = <&pioA PIN_PD21 GPIO_ACTIVE_HIGH>;
> +	scl-gpios = <&pioA PIN_PD22 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
>   	status = "okay";
>   };
>   
>   &i2c1 {
>   	dmas = <0>, <0>;
> -	pinctrl-names = "default";
> +	pinctrl-names = "default", "gpio";
>   	pinctrl-0 = <&pinctrl_i2c1_default>;
> +	pinctrl-1 = <&pinctrl_i2c1_gpio>;
> +	sda-gpios = <&pioA PIN_PD19 GPIO_ACTIVE_HIGH>;
> +	scl-gpios = <&pioA PIN_PD20 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
>   	status = "okay";
>   
>   	mcp16502@5b {
> @@ -258,12 +264,24 @@ pinctrl_i2c0_default: i2c0_default {
>   		bias-disable;
>   	};
>   
> +	pinctrl_i2c0_gpio: i2c0_gpio {
> +		pinmux = <PIN_PD21__GPIO>,
> +			 <PIN_PD22__GPIO>;
> +		bias-disable;
> +	};
> +
>   	pinctrl_i2c1_default: i2c1_default {
>   		pinmux = <PIN_PD19__TWD1>,
>   			 <PIN_PD20__TWCK1>;
>   		bias-disable;
>   	};
>   
> +	pinctrl_i2c1_gpio: i2c1_gpio {
> +		pinmux = <PIN_PD19__GPIO>,
> +			 <PIN_PD20__GPIO>;
> +		bias-disable;
> +	};
> +
>   	pinctrl_macb0_default: macb0_default {
>   		pinmux = <PIN_PB14__GTXCK>,
>   			 <PIN_PB15__GTXEN>,
> 


-- 
Nicolas Ferre