On 05/07/2019 11:43 AM, Kever Yang wrote:
On 04/16/2019 09:56 PM, David Wu wrote:
RK3288 pmu_gpio0 drive strength setting have no higher 16 writing corresponding bits, need to read before write the register.
Signed-off-by: David Wu david.wu@rock-chips.com
Reviewed-by: Kever Yang kever.yang@rock-chips.com
Applied to u-boot-rockchip, thanks!
Thanks,
- Kever
Change in v3:
- Add some comment
drivers/pinctrl/rockchip/pinctrl-rk3288.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/pinctrl/rockchip/pinctrl-rk3288.c b/drivers/pinctrl/rockchip/pinctrl-rk3288.c index 6ae9f1c76e..d1b9aeb3d9 100644 --- a/drivers/pinctrl/rockchip/pinctrl-rk3288.c +++ b/drivers/pinctrl/rockchip/pinctrl-rk3288.c @@ -143,8 +143,15 @@ static int rk3288_set_drive(struct rockchip_pin_bank *bank, return ret; }
- /* enable the write to the equivalent lower bits */
- data = ((1 << ROCKCHIP_DRV_BITS_PER_PIN) - 1) << (bit + 16);
- /* bank0 is special, there are no higher 16 bit writing bits. */
- if (bank->bank_num == 0) {
regmap_read(regmap, reg, &data);data &= ~(((1 << ROCKCHIP_DRV_BITS_PER_PIN) - 1) << bit);- } else {
/* enable the write to the equivalent lower bits */data = ((1 << ROCKCHIP_DRV_BITS_PER_PIN) - 1) << (bit + 16);- }
- data |= (ret << bit); ret = regmap_write(regmap, reg, data); return ret;
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