diff options
| author | David Wu <david.wu@rock-chips.com> | 2019-04-16 21:57:28 +0800 |
|---|---|---|
| committer | Kever Yang <kever.yang@rock-chips.com> | 2019-05-08 17:34:12 +0800 |
| commit | 69a38f81bb55893a8555c899319305c539226a0a (patch) | |
| tree | 31124416708eb3a04384c925c66348f14e11ca46 /drivers | |
| parent | 743a77373bfa22ca099b30d4ac88d95a2f98d1b6 (diff) | |
pinctrl: rockchip: Special treatment for RK3288 gpio0 pins' pull
RK3288 pmu_gpio0 pull 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>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pinctrl/rockchip/pinctrl-rk3288.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/pinctrl/rockchip/pinctrl-rk3288.c b/drivers/pinctrl/rockchip/pinctrl-rk3288.c index 9192aa3949..24af3597ec 100644 --- a/drivers/pinctrl/rockchip/pinctrl-rk3288.c +++ b/drivers/pinctrl/rockchip/pinctrl-rk3288.c @@ -116,8 +116,15 @@ static int rk3288_set_pull(struct rockchip_pin_bank *bank, return ret; } - /* enable the write to the equivalent lower bits */ - data = ((1 << ROCKCHIP_PULL_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_PULL_BITS_PER_PIN) - 1) << bit); + } else { + /* enable the write to the equivalent lower bits */ + data = ((1 << ROCKCHIP_PULL_BITS_PER_PIN) - 1) << (bit + 16); + } + data |= (ret << bit); ret = regmap_write(regmap, reg, data); |