Commit 978bc4c5 authored by Dmitry Torokhov's avatar Dmitry Torokhov Committed by Bjorn Andersson
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arm64: dts: qcom: msm8916-samsung-a2015: fix polarity of "enable" line of NFC chip



According to s3fwrn5 driver code the "enable" GPIO line is driven "high"
when chip is not in use (mode is S3FWRN5_MODE_COLD), and is driven "low"
when chip is in use.

s3fwrn5_phy_power_ctrl():

	...
	gpio_set_value(phy->gpio_en, 1);
	...
	if (mode != S3FWRN5_MODE_COLD) {
		msleep(S3FWRN5_EN_WAIT_TIME);
		gpio_set_value(phy->gpio_en, 0);
		msleep(S3FWRN5_EN_WAIT_TIME);
	}

Therefore the line described by "en-gpios" property should be annotated
as "active low".

The wakeup gpio appears to have correct polarity (active high).

Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220929011557.4165216-2-dmitry.torokhov@gmail.com
parent 5aa332c5
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+1 −1
Original line number Diff line number Diff line
@@ -144,7 +144,7 @@ nfc@27 {
			interrupt-parent = <&msmgpio>;
			interrupts = <21 IRQ_TYPE_EDGE_RISING>;

			en-gpios = <&msmgpio 20 GPIO_ACTIVE_HIGH>;
			en-gpios = <&msmgpio 20 GPIO_ACTIVE_LOW>;
			wake-gpios = <&msmgpio 49 GPIO_ACTIVE_HIGH>;

			clocks = <&rpmcc RPM_SMD_BB_CLK2_PIN>;