linux-kernel - Re: [PATCH] i2c: imx: switch different pinctrl state in different system power status

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Message-ID: <Z0SvgdJGs6ccAk4W@lizhi-Precision-Tower-5810>
Date: Mon, 25 Nov 2024 12:10:25 -0500
From: Frank Li <Frank.li@....com>
To: carlos.song@....com
Cc: o.rempel@...gutronix.de, kernel@...gutronix.de, andi.shyti@...nel.org,
	shawnguo@...nel.org, s.hauer@...gutronix.de, festevam@...il.com,
	linux-i2c@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c: imx: switch different pinctrl state in different
 system power status

On Mon, Nov 25, 2024 at 09:43:22PM +0800, carlos.song@....com wrote:
> From: Carlos Song <carlos.song@....com>
>
> Switch different pinctrl state in different system power status.
>
> Signed-off-by: Carlos Song <carlos.song@....com>

Reviewed-by: Frank Li <Frank.Li@....com>

> ---
>  drivers/i2c/busses/i2c-imx.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
> index f751d231ded8..cf8931a8013d 100644
> --- a/drivers/i2c/busses/i2c-imx.c
> +++ b/drivers/i2c/busses/i2c-imx.c
> @@ -1859,6 +1859,7 @@ static int i2c_imx_runtime_suspend(struct device *dev)
>  	struct imx_i2c_struct *i2c_imx = dev_get_drvdata(dev);
>
>  	clk_disable(i2c_imx->clk);
> +	pinctrl_pm_select_sleep_state(dev);
>
>  	return 0;
>  }
> @@ -1868,6 +1869,7 @@ static int i2c_imx_runtime_resume(struct device *dev)
>  	struct imx_i2c_struct *i2c_imx = dev_get_drvdata(dev);
>  	int ret;
>
> +	pinctrl_pm_select_default_state(dev);
>  	ret = clk_enable(i2c_imx->clk);
>  	if (ret)
>  		dev_err(dev, "can't enable I2C clock, ret=%d\n", ret);
> --
> 2.34.1
>