tty: serial: imx: add pinctrl sleep/default mode switch for suspend

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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@nxp.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Anson Huang 2018-09-05 09:24:27 +08:00 • committed by Greg Kroah-Hartman

parent 07b5e16e98

commit fcfed1be53

1 changed files with 5 additions and 0 deletions

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drivers/tty/serial/imx.c

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