linux-kernel - Re: [PATCH] i2c: pxa: move to generic GPIO recovery

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Date:   Sat, 3 Oct 2020 22:46:13 +0000
From:   <Codrin.Ciubotariu@...rochip.com>
To:     <linux@...linux.org.uk>
CC:     <linux-i2c@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <wsa@...nel.org>,
        <alpawi@...zon.com>
Subject: Re: [PATCH] i2c: pxa: move to generic GPIO recovery

>>   static void i2c_pxa_unprepare_recovery(struct i2c_adapter *adap)
>> @@ -1325,8 +1320,6 @@ static void i2c_pxa_unprepare_recovery(struct i2c_adapter *adap)
>>                i2c_pxa_do_reset(i2c);
>>        }
>>
>> -     WARN_ON(pinctrl_select_state(i2c->pinctrl, i2c->pinctrl_default));
>> -
> 
> This won't fly. We need to put the pinctrl back into i2c mode _before_
> we re-enable the I2C module, otherwise the I2C block will see logic 0
> on both SCL and SDA which could confuse the block.

Right, I will add it back.

Best regards,
Codrin