pinctrl: qcom: lpass-lpi: set output value before enabling output
As per Hardware Programming Guide, when configuring pin as output,
set the pin value before setting output-enable (OE). Similar approach
is in main SoC TLMM pin controller.
Cc: <stable@vger.kernel.org>
Fixes: 6e261d1090
("pinctrl: qcom: Add sm8250 lpass lpi pinctrl driver")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230309154949.658380-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Родитель
29f6e7e379
Коммит
163bfb0cb1
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@ -221,6 +221,15 @@ static int lpi_config_set(struct pinctrl_dev *pctldev, unsigned int group,
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}
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}
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/*
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* As per Hardware Programming Guide, when configuring pin as output,
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* set the pin value before setting output-enable (OE).
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*/
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if (output_enabled) {
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val = u32_encode_bits(value ? 1 : 0, LPI_GPIO_VALUE_OUT_MASK);
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lpi_gpio_write(pctrl, group, LPI_GPIO_VALUE_REG, val);
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}
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val = lpi_gpio_read(pctrl, group, LPI_GPIO_CFG_REG);
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u32p_replace_bits(&val, pullup, LPI_GPIO_PULL_MASK);
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@ -230,11 +239,6 @@ static int lpi_config_set(struct pinctrl_dev *pctldev, unsigned int group,
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lpi_gpio_write(pctrl, group, LPI_GPIO_CFG_REG, val);
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if (output_enabled) {
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val = u32_encode_bits(value ? 1 : 0, LPI_GPIO_VALUE_OUT_MASK);
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lpi_gpio_write(pctrl, group, LPI_GPIO_VALUE_REG, val);
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}
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return 0;
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}
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