Searched hist:b80ec7c0 (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/drivers/firmware/ |
| H A D | raspberrypi.c | b80ec7c0 Fri Dec 07 12:21:11 CST 2018 Stefan Wahren <stefan.wahren@i2se.com> firmware: raspberrypi: notify VC4 firmware of a reboot
The firmware-owned GPIO expander on RPi 3 B+ must be in same state
after a reboot as initial power on. Otherwise this would cause a
network boot failure of the BOOTROM. So inform the VC4 firmware to restore
the expander before doing a reboot.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Phil Elwell <phil@raspberrypi.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
b80ec7c0 Fri Dec 07 12:21:11 CST 2018 Stefan Wahren <stefan.wahren@i2se.com> firmware: raspberrypi: notify VC4 firmware of a reboot
The firmware-owned GPIO expander on RPi 3 B+ must be in same state
after a reboot as initial power on. Otherwise this would cause a
network boot failure of the BOOTROM. So inform the VC4 firmware to restore
the expander before doing a reboot.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Phil Elwell <phil@raspberrypi.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
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