mfd: mc13xxx: Configure WDI reset
Setup the PMIC to make a restart when a watchdog interrupt occures.
If this is not configured, the PMIC will shut down the power supply
without a restart.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/mfd/mc13xxx-core.c b/drivers/mfd/mc13xxx-core.c
index 2b6bc86..64dde5d 100644
--- a/drivers/mfd/mc13xxx-core.c
+++ b/drivers/mfd/mc13xxx-core.c
@@ -36,6 +36,9 @@
#define MC34708_REVISION_FIN (0x07 << 6)
#define MC34708_REVISION_FAB (0x07 << 9)
+#define MC13XXX_PWRCTRL 15
+#define MC13XXX_PWRCTRL_WDIRESET (1 << 12)
+
#define MC13XXX_ADC1 44
#define MC13XXX_ADC1_ADEN (1 << 0)
#define MC13XXX_ADC1_RAND (1 << 1)
@@ -416,6 +419,11 @@
mc13xxx->variant->print_revision(mc13xxx, revision);
+ ret = mc13xxx_reg_rmw(mc13xxx, MC13XXX_PWRCTRL,
+ MC13XXX_PWRCTRL_WDIRESET, MC13XXX_PWRCTRL_WDIRESET);
+ if (ret)
+ return ret;
+
for (i = 0; i < ARRAY_SIZE(mc13xxx->irqs); i++) {
mc13xxx->irqs[i].reg_offset = i / MC13XXX_IRQ_PER_REG;
mc13xxx->irqs[i].mask = BIT(i % MC13XXX_IRQ_PER_REG);