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Subject[PATCH] mfd: bd9571mwv: add volatile register to make DVFS work
From: Dien Pham <>

Because BD9571MWV_DVFS_MONIVDAC is not defined in the volatile table,
the physical register value is not updated by regmap and DVFS doesn't
work as expected. Fix it!

Signed-off-by: Dien Pham <>
[wsa: rebase, add 'Fixes', reword commit message]
Signed-off-by: Wolfram Sang <>
Fixes: d3ea21272094 ("mfd: Add ROHM BD9571MWV-M MFD PMIC driver")

Grabbed from the BSP and confirmed by the datasheet. The register is RO
and reflecting states depending on other registers.

drivers/mfd/bd9571mwv.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/mfd/bd9571mwv.c b/drivers/mfd/bd9571mwv.c
index 503979c81dae..fab3cdc27ed6 100644
--- a/drivers/mfd/bd9571mwv.c
+++ b/drivers/mfd/bd9571mwv.c
@@ -59,6 +59,7 @@ static const struct regmap_access_table bd9571mwv_writable_table = {

static const struct regmap_range bd9571mwv_volatile_yes_ranges[] = {
+ regmap_reg_range(BD9571MWV_DVFS_MONIVDAC, BD9571MWV_DVFS_MONIVDAC),
regmap_reg_range(BD9571MWV_GPIO_IN, BD9571MWV_GPIO_IN),
regmap_reg_range(BD9571MWV_GPIO_INT, BD9571MWV_GPIO_INT),
regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTREQ),
 \ /
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