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authorLinus Walleij <linus.walleij@linaro.org>2019-08-23 11:47:28 +0200
committerMichal Simek <michal.simek@xilinx.com>2019-09-19 10:43:32 +0200
commit7cca9b8b7c5bcc56d627851550840586a25aaa1b (patch)
tree822845323a4631d5b6d20a7b90924bf4814a274e /arch/microblaze/configs/nommu_defconfig
parent1c62ed908363e249f3b0e1879d9d982e8431fb3f (diff)
downloadlinux-7cca9b8b7c5bcc56d627851550840586a25aaa1b.tar.bz2
microblaze: Switch to standard restart handler
The microblaze uses the legacy APIs to dig out a GPIO pin defined in the root of the device tree to issue a hard reset of the platform. Asserting a hard reset should be done using the standard DT-enabled and fully GPIO descriptor aware driver in drivers/power/reset/gpio-restart.c using the bindings from Documentation/devicetree/bindings/power/reset/gpio-restart.txt To achieve this, first make sure microblaze makes use of the standard kernel restart path utilizing do_kernel_restart() from <linux/reboot.h>. Put in some grace time and an emergency print if the restart does not properly assert. As this is basic platform functionality we patch the DTS file and defconfig in one go for a lockstep change. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Michal Simek <monstr@monstr.eu> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> [ Michal: Move machine_restart back to reset.c ] Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'arch/microblaze/configs/nommu_defconfig')
-rw-r--r--arch/microblaze/configs/nommu_defconfig2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/microblaze/configs/nommu_defconfig b/arch/microblaze/configs/nommu_defconfig
index dc102eb65fca..377de39ccb8c 100644
--- a/arch/microblaze/configs/nommu_defconfig
+++ b/arch/microblaze/configs/nommu_defconfig
@@ -62,6 +62,8 @@ CONFIG_SPI_XILINX=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_XILINX=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_GPIO_RESTART=y
# CONFIG_HWMON is not set
CONFIG_WATCHDOG=y
CONFIG_XILINX_WATCHDOG=y