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path: root/drivers/serial/serial_bcm283x_pl011.c
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2018-03-09bcm283x_pl011: Flush RX queue after setting baud rateAlexander Graf
After the UART was initialized, we may still have bogus data in the RX queue if it was enabled with incorrect pin muxing before. So let's flush the RX queue whenever we initialize baud rates. This fixes a regression with the dynamic pinmuxing code when enable_uart=1 is not set in config.txt on Raspberry Pis that use pl011 for serial. Fixes: caf2233b28 ("bcm283x: Add pinctrl driver") Reported-by: Göran Lundberg <goran@lundberg.email> Reported-by: Peter Robinson <pbrobinson@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de> Tested-by: Peter Robinson <pbrobinson@gmail.com> Tested-by: Tuomas Tynkkynen <tuomas@tuxera.com>
2018-01-28bcm2835_pl011_serial: Add BCM2835 specific serial driverAlexander Graf
On bcm2835 we need to ensure we only access serial devices that are muxed to the serial output pins of the pin header. To achieve this for the pl011 device, add a bcm2835 specific pl011 wrapper device that does this check but otherwise behaves like a pl011 device. Signed-off-by: Alexander Graf <agraf@suse.de>