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authorMarkus Pargmann <mpa@pengutronix.de>2014-09-08 11:01:11 +0400
committerLee Jones <lee.jones@linaro.org>2014-09-26 11:23:50 +0400
commit34a4958e4cfe1a379ed18fb3e2d0b93ba08f28d3 (patch)
treed3e1a8c014481b758fe9b28681f0b35e91fc327f /drivers/mfd
parent970d9fbca95c2f5277a4f55c2fba9a8b615c38f7 (diff)
downloadlinux-34a4958e4cfe1a379ed18fb3e2d0b93ba08f28d3.tar.xz
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>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/mc13xxx-core.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mfd/mc13xxx-core.c b/drivers/mfd/mc13xxx-core.c
index 2b6bc868cd3d..64dde5d24b32 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 @@ int mc13xxx_common_init(struct device *dev)
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);