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| author | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2020-01-06 12:35:33 +0300 |
|---|---|---|
| committer | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2020-01-06 12:35:33 +0300 |
| commit | 22164fbe274c2dd96d2887fe121896d321000a61 (patch) | |
| tree | 629a8af05ecbe3ed8e18938de2564517c9b44d92 /drivers/spi/spi-sprd-adi.c | |
| parent | 3d0dad869aeb5d8e81985c73a6c73428258f8083 (diff) | |
| parent | f5c547efa16c0ea5abff0596e829f502be11902e (diff) | |
| download | linux-22164fbe274c2dd96d2887fe121896d321000a61.tar.xz | |
Merge drm/drm-next into drm-misc-next
Requested, and we need v5.5-rc1 backported as our current branch is still based on v5.4.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Diffstat (limited to 'drivers/spi/spi-sprd-adi.c')
| -rw-r--r-- | drivers/spi/spi-sprd-adi.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/spi/spi-sprd-adi.c b/drivers/spi/spi-sprd-adi.c index 9a051286f120..87dadb6b8ebf 100644 --- a/drivers/spi/spi-sprd-adi.c +++ b/drivers/spi/spi-sprd-adi.c @@ -77,6 +77,7 @@ /* Bits definitions for register REG_WDG_CTRL */ #define BIT_WDG_RUN BIT(1) +#define BIT_WDG_NEW BIT(2) #define BIT_WDG_RST BIT(3) /* Registers definitions for PMIC */ @@ -383,6 +384,10 @@ static int sprd_adi_restart_handler(struct notifier_block *this, /* Unlock the watchdog */ sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_LOCK, WDG_UNLOCK_KEY); + sprd_adi_read(sadi, sadi->slave_pbase + REG_WDG_CTRL, &val); + val |= BIT_WDG_NEW; + sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_CTRL, val); + /* Load the watchdog timeout value, 50ms is always enough. */ sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_LOAD_LOW, WDG_LOAD_VAL & WDG_LOAD_MASK); @@ -393,6 +398,9 @@ static int sprd_adi_restart_handler(struct notifier_block *this, val |= BIT_WDG_RUN | BIT_WDG_RST; sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_CTRL, val); + /* Lock the watchdog */ + sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_LOCK, ~WDG_UNLOCK_KEY); + mdelay(1000); dev_emerg(sadi->dev, "Unable to restart system\n"); |