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

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Message-ID: <4911f3a7-fe4b-8eb0-f504-667ee5ea1294@gmail.com>
Date:   Wed, 9 Feb 2022 18:52:11 -0500
From:   Sean Anderson <seanga2@...il.com>
To:     Damien Le Moal <damien.lemoal@...nsource.wdc.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 2/9/22 6:34 PM, Damien Le Moal wrote:
> 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 :)

(This is in U-Boot as well, so it looks like it's my bad)