RK3288 pmu_gpio0 iomux setting have no higher 16 writing corresponding
bits, need to read before write the register.
Signed-off-by: David Wu <david...@rock-chips.com>
---
drivers/pinctrl/rockchip/pinctrl-rk3288.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/pinctrl/rockchip/pinctrl-rk3288.c
b/drivers/pinctrl/rockchip/pinctrl-rk3288.c
index 1fa601d954..d66ffdf24b 100644
--- a/drivers/pinctrl/rockchip/pinctrl-rk3288.c
+++ b/drivers/pinctrl/rockchip/pinctrl-rk3288.c
@@ -54,7 +54,13 @@ static int rk3288_set_mux(struct rockchip_pin_bank *bank,
int pin, int mux)
}
}
- data = (mask << (bit + 16));
+ if (bank->bank_num == 0) {
+ regmap_read(regmap, reg, &data);
+ data &= ~(mask << bit);
+ } else {
+ data = (mask << (bit + 16));
+ }
+
data |= (mux & mask) << bit;
ret = regmap_write(regmap, reg, data);
--
2.19.1
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