linux-kernel - Re: [PATCH V2 2/2] tty: serial: imx: add pinctrl sleep/default mode switch for suspend

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Message-ID: <20180905055511.ba46b2onz7skb7ln@pengutronix.de>
Date:   Wed, 5 Sep 2018 07:55:11 +0200
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Anson Huang <Anson.Huang@....com>
Cc:     gregkh@...uxfoundation.org, jslaby@...e.com,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        Linux-imx@....com
Subject: Re: [PATCH V2 2/2] tty: serial: imx: add pinctrl sleep/default mode
 switch for suspend

On Wed, Sep 05, 2018 at 09:24:27AM +0800, Anson Huang wrote:
> On some i.MX SoCs' low power mode, such as i.MX7D's LPSR(low power
> state retention), UART iomux settings will be lost, need to add
> pinctrl sleep/default mode switch during suspend/resume to make
> sure UART iomux settings are correct after resume.
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>

Acked-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

Best regards
Uwe
-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |