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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>
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@ -116,8 +116,15 @@ static int rk3288_set_pull(struct rockchip_pin_bank *bank,
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return ret;
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}
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/* enable the write to the equivalent lower bits */
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data = ((1 << ROCKCHIP_PULL_BITS_PER_PIN) - 1) << (bit + 16);
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/* bank0 is special, there are no higher 16 bit writing bits */
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if (bank->bank_num == 0) {
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regmap_read(regmap, reg, &data);
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data &= ~(((1 << ROCKCHIP_PULL_BITS_PER_PIN) - 1) << bit);
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} else {
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/* enable the write to the equivalent lower bits */
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data = ((1 << ROCKCHIP_PULL_BITS_PER_PIN) - 1) << (bit + 16);
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}
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data |= (ret << bit);
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ret = regmap_write(regmap, reg, data);
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