linux-kernel - Re: [PATCH] pinctrl: k210: Fix bias-pull-up

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Message-ID: <fb3e9786-87e9-6346-cf84-2617adfa5b8d@opensource.wdc.com>
Date:   Thu, 10 Feb 2022 08:34:12 +0900
From:   Damien Le Moal <damien.lemoal@...nsource.wdc.com>
To:     Sean Anderson <seanga2@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-gpio@...r.kernel.org
Cc:     linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [PATCH] pinctrl: k210: Fix bias-pull-up

On 2/10/22 03:28, Sean Anderson wrote:
> Using bias-pull-up would actually cause the pin to have its pull-down
> enabled. Fix this.
> 
> Signed-off-by: Sean Anderson <seanga2@...il.com>
> ---
> 
>  drivers/pinctrl/pinctrl-k210.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pinctrl/pinctrl-k210.c b/drivers/pinctrl/pinctrl-k210.c
> index 49e32684dbb2..1ad61b32ec88 100644
> --- a/drivers/pinctrl/pinctrl-k210.c
> +++ b/drivers/pinctrl/pinctrl-k210.c
> @@ -527,7 +527,7 @@ static int k210_pinconf_set_param(struct pinctrl_dev *pctldev,
>  	case PIN_CONFIG_BIAS_PULL_UP:
>  		if (!arg)
>  			return -EINVAL;
> -		val |= K210_PC_PD;
> +		val |= K210_PC_PU;
>  		break;
>  	case PIN_CONFIG_DRIVE_STRENGTH:
>  		arg *= 1000;

Ooops... My bad :)

Reviewed-by: Damien Le Moal <damien.lemoal@...nsource.wdc.com>

-- 
Damien Le Moal
Western Digital Research