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From:   Stephan Gerhold <stephan@gerhold.net>
Date:   Tue, 30 May 2023 09:15:22 +0200
Subject: [PATCH 1/6] arm64: dts: qcom: msm8916/39: Fix SD card detect
 pinctrl
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Message-Id: <20230529-msm8916-pinctrl-v1-1-11f540b51c93@gerhold.net>
References: <20230529-msm8916-pinctrl-v1-0-11f540b51c93@gerhold.net>
In-Reply-To: <20230529-msm8916-pinctrl-v1-0-11f540b51c93@gerhold.net>
To:     Bjorn Andersson <andersson@kernel.org>
Cc:     Andy Gross <agross@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        Bryan O'Donoghue <bryan.odonoghue@linaro.org>,
        Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
        Stephan Gerhold <stephan@gerhold.net>
Precedence: bulk

The current SD card detect pinctrl setup configures bias-pull-up for
the "default" (active) case and bias-disable for the "sleep" case.
Before commit b5c833b703cc ("mmc: sdhci-msm: Set IO pins in low power
state during suspend") the pull up was permanently active. Since then
it is only active when a valid SD card is inserted.

This does not really make sense: For an active-low CD, the pull up is
needed to pull the GPIO high when the card is not inserted. When the
card gets inserted CD is shorted to ground (low). This means right now
the pull-up is removed exactly when it is needed to detect the next
card insertion. Generally, applying different bias for CD does not
really make sense. It should always stay the same so card removals and
insertions can be detected properly.

The reason why card detection still works fine in practice is that most
boards seem to have external pull up on the CD pin. However, this means
that there is no need to configure an internal pull-up at all and we
can keep bias-disable permanently.

There are also some boards with different CD polarity (acer-a1-724) and
with different GPIO number (huawei-g7). All in all this makes it
obvious that the CD pin is board-specific and the pinctrl for it should
be defined in the board DT.

Move it to the boards that need it and use bias-disable permanently for
the boards that seem to have external pull-up. The vendor device tree
for msm8939-sony-xperia-kanuti-tulip suggests that it needs the
internal pull-up permanently [1] so it gets bias-pull-up to be sure.

[1]: https://github.com/sonyxperiadev/kernel/blob/57b5050e340f40a88e1ddb8d16fd9adb44418923/arch/arm/boot/dts/qcom/msm8939-kanuti_tulip.dtsi#L634-L636

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
---
 arch/arm64/boot/dts/qcom/apq8016-sbc.dts                | 11 +++++++++--
 arch/arm64/boot/dts/qcom/msm8916-acer-a1-724.dts        | 11 +++++++++--
 arch/arm64/boot/dts/qcom/msm8916-alcatel-idol347.dts    | 11 +++++++++--
 arch/arm64/boot/dts/qcom/msm8916-asus-z00l.dts          | 11 +++++++++--
 arch/arm64/boot/dts/qcom/msm8916-gplus-fl8005a.dts      | 11 +++++++++--
 arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts          |  6 +++---
 arch/arm64/boot/dts/qcom/msm8916-longcheer-l8910.dts    | 11 +++++++++--
 arch/arm64/boot/dts/qcom/msm8916-pins.dtsi              | 17 -----------------
 .../boot/dts/qcom/msm8916-samsung-a2015-common.dtsi     | 11 +++++++++--
 .../arm64/boot/dts/qcom/msm8916-samsung-gt5-common.dtsi | 11 +++++++++--
 arch/arm64/boot/dts/qcom/msm8916-samsung-j5-common.dtsi | 11 +++++++++--
 .../boot/dts/qcom/msm8939-sony-xperia-kanuti-tulip.dts  | 11 +++++++++--
 arch/arm64/boot/dts/qcom/msm8939.dtsi                   | 14 --------------
 13 files changed, 93 insertions(+), 54 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/apq8016-sbc.dts b/arch/arm64/boot/dts/qcom/apq8016-sbc.dts
index 56dfca61253e..b8537fe576a8 100644
--- a/arch/arm64/boot/dts/qcom/apq8016-sbc.dts
+++ b/arch/arm64/boot/dts/qcom/apq8016-sbc.dts
@@ -380,8 +380,8 @@ &sdhc_2 {
 	status = "okay";
 
 	pinctrl-names = "default", "sleep";
-	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_on>;
-	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_off>;
+	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_default>;
+	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_default>;
 
 	cd-gpios = <&tlmm 38 GPIO_ACTIVE_LOW>;
 };
@@ -642,6 +642,13 @@ &tlmm {
 		"USR_LED_2_CTRL", /* GPIO 120 */
 		"SB_HS_ID";
 
+	sdc2_cd_default: sdc2-cd-default-state {
+		pins = "gpio38";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	tlmm_leds: tlmm-leds-state {
 		pins = "gpio21", "gpio120";
 		function = "gpio";
diff --git a/arch/arm64/boot/dts/qcom/msm8916-acer-a1-724.dts b/arch/arm64/boot/dts/qcom/msm8916-acer-a1-724.dts
index 5025c08e4817..9846584daf64 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-acer-a1-724.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-acer-a1-724.dts
@@ -142,8 +142,8 @@ &sdhc_1 {
 
 &sdhc_2 {
 	pinctrl-names = "default", "sleep";
-	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on>;
-	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off>;
+	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_default>;
+	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_default>;
 
 	cd-gpios = <&tlmm 38 GPIO_ACTIVE_HIGH>;
 
@@ -184,6 +184,13 @@ gpio_keys_default: gpio-keys-default-state {
 		bias-pull-up;
 	};
 
+	sdc2_cd_default: sdc2-cd-default-state {
+		pins = "gpio38";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	touchscreen_default: touchscreen-default-state {
 		reset-pins {
 			pins = "gpio12";
diff --git a/arch/arm64/boot/dts/qcom/msm8916-alcatel-idol347.dts b/arch/arm64/boot/dts/qcom/msm8916-alcatel-idol347.dts
index 7b629243ef0d..4ad7d36cf350 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-alcatel-idol347.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-alcatel-idol347.dts
@@ -181,8 +181,8 @@ &sdhc_2 {
 	status = "okay";
 
 	pinctrl-names = "default", "sleep";
-	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_on>;
-	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_off>;
+	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_default>;
+	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_default>;
 
 	cd-gpios = <&tlmm 38 GPIO_ACTIVE_LOW>;
 };
@@ -276,6 +276,13 @@ proximity_int_default: proximity-int-default-state {
 		bias-pull-up;
 	};
 
+	sdc2_cd_default: sdc2-cd-default-state {
+		pins = "gpio38";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	ts_int_reset_default: ts-int-reset-default-state {
 		pins = "gpio13", "gpio100";
 		function = "gpio";
diff --git a/arch/arm64/boot/dts/qcom/msm8916-asus-z00l.dts b/arch/arm64/boot/dts/qcom/msm8916-asus-z00l.dts
index b8c217b04a3b..33ca4e157cd5 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-asus-z00l.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-asus-z00l.dts
@@ -150,8 +150,8 @@ &sdhc_2 {
 	vmmc-supply = <&reg_sd_vmmc>;
 
 	pinctrl-names = "default", "sleep";
-	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_on>;
-	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_off>;
+	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_default>;
+	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_default>;
 	cd-gpios = <&tlmm 38 GPIO_ACTIVE_LOW>;
 };
 
@@ -205,6 +205,13 @@ sd_vmmc_en_default: sd-vmmc-en-default-state {
 		bias-disable;
 	};
 
+	sdc2_cd_default: sdc2-cd-default-state {
+		pins = "gpio38";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	touchscreen_default: touchscreen-default-state {
 		touch-pins {
 			pins = "gpio13";
diff --git a/arch/arm64/boot/dts/qcom/msm8916-gplus-fl8005a.dts b/arch/arm64/boot/dts/qcom/msm8916-gplus-fl8005a.dts
index 56c42b0c9733..0d387d9507c3 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-gplus-fl8005a.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-gplus-fl8005a.dts
@@ -136,8 +136,8 @@ &sdhc_1 {
 };
 
 &sdhc_2 {
-	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on>;
-	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off>;
+	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_default>;
+	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_default>;
 	pinctrl-names = "default", "sleep";
 
 	cd-gpios = <&tlmm 38 GPIO_ACTIVE_LOW>;
@@ -184,6 +184,13 @@ gpio_leds_default: gpio-led-default-state {
 		bias-disable;
 	};
 
+	sdc2_cd_default: sdc2-cd-default-state {
+		pins = "gpio38";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	touchscreen_default: touchscreen-default-state {
 		reset-pins {
 			pins = "gpio12";
diff --git a/arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts b/arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts
index 175ca011998c..39be7b6b1695 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts
@@ -270,8 +270,8 @@ &sdhc_2 {
 	status = "okay";
 
 	pinctrl-names = "default", "sleep";
-	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdhc2_cd_default>;
-	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdhc2_cd_default>;
+	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_default>;
+	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_default>;
 
 	/*
 	 * The Huawei device tree sets cd-gpios = <&tlmm 38 GPIO_ACTIVE_HIGH>.
@@ -397,7 +397,7 @@ reg_lcd_en_default: reg-lcd-en-default-state {
 		bias-disable;
 	};
 
-	sdhc2_cd_default: sdhc2-cd-default-state {
+	sdc2_cd_default: sdc2-cd-default-state {
 		pins = "gpio56";
 		function = "gpio";
 
diff --git a/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8910.dts b/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8910.dts
index f23cfb2bf793..04e598a436cb 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8910.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8910.dts
@@ -135,8 +135,8 @@ &sdhc_2 {
 	status = "okay";
 
 	pinctrl-names = "default", "sleep";
-	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_on>;
-	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_off>;
+	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_default>;
+	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_default>;
 
 	cd-gpios = <&tlmm 38 GPIO_ACTIVE_LOW>;
 };
@@ -190,6 +190,13 @@ mag_reset_default: mag-reset-default-state {
 		bias-disable;
 	};
 
+	sdc2_cd_default: sdc2-cd-default-state {
+		pins = "gpio38";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	usb_id_default: usb-id-default-state {
 		pins = "gpio110";
 		function = "gpio";
diff --git a/arch/arm64/boot/dts/qcom/msm8916-pins.dtsi b/arch/arm64/boot/dts/qcom/msm8916-pins.dtsi
index 1b60d42a13c7..c2149bcf53c4 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-pins.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-pins.dtsi
@@ -380,23 +380,6 @@ sdc2_data_off: data-off-pins {
 		};
 	};
 
-	pmx-sdc2-cd-pin-state {
-		sdc2_cd_on: cd-on-pins {
-			pins = "gpio38";
-			function = "gpio";
-
-			drive-strength = <2>;
-			bias-pull-up;
-		};
-		sdc2_cd_off: cd-off-pins {
-			pins = "gpio38";
-			function = "gpio";
-
-			drive-strength = <2>;
-			bias-disable;
-		};
-	};
-
 	cdc-pdm-lines-state {
 		cdc_pdm_lines_act: pdm-lines-on-pins {
 			pins = "gpio63", "gpio64", "gpio65", "gpio66",
diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
index 895036fb6eb8..3c145a0aac99 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
@@ -273,8 +273,8 @@ &sdhc_2 {
 	status = "okay";
 
 	pinctrl-names = "default", "sleep";
-	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_on>;
-	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_off>;
+	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_default>;
+	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_default>;
 
 	cd-gpios = <&tlmm 38 GPIO_ACTIVE_LOW>;
 };
@@ -391,6 +391,13 @@ nfc_i2c_default: nfc-i2c-default-state {
 		bias-disable;
 	};
 
+	sdc2_cd_default: sdc2-cd-default-state {
+		pins = "gpio38";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	tkey_default: tkey-default-state {
 		pins = "gpio98";
 		function = "gpio";
diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-gt5-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-gt5-common.dtsi
index 94cfb3200496..057ce62c0305 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-gt5-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-gt5-common.dtsi
@@ -143,8 +143,8 @@ &sdhc_1 {
 };
 
 &sdhc_2 {
-	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_on>;
-	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_off>;
+	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_default>;
+	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_default>;
 	pinctrl-names = "default", "sleep";
 
 	cd-gpios = <&tlmm 38 GPIO_ACTIVE_LOW>;
@@ -199,4 +199,11 @@ gpio_hall_sensor_default: gpio-hall-sensor-default-state {
 		drive-strength = <2>;
 		bias-disable;
 	};
+
+	sdc2_cd_default: sdc2-cd-default-state {
+		pins = "gpio38";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
 };
diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-j5-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-j5-common.dtsi
index f2a5800f1605..36233a31b98b 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-j5-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-j5-common.dtsi
@@ -107,8 +107,8 @@ &sdhc_2 {
 	status = "okay";
 
 	pinctrl-names = "default", "sleep";
-	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_on>;
-	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_off>;
+	pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_default>;
+	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_default>;
 
 	cd-gpios = <&tlmm 38 GPIO_ACTIVE_LOW>;
 };
@@ -162,4 +162,11 @@ muic_int_default: muic-int-default-state {
 		drive-strength = <2>;
 		bias-disable;
 	};
+
+	sdc2_cd_default: sdc2-cd-default-state {
+		pins = "gpio38";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
 };
diff --git a/arch/arm64/boot/dts/qcom/msm8939-sony-xperia-kanuti-tulip.dts b/arch/arm64/boot/dts/qcom/msm8939-sony-xperia-kanuti-tulip.dts
index 85a8d8fe212f..80e4f0a6eea1 100644
--- a/arch/arm64/boot/dts/qcom/msm8939-sony-xperia-kanuti-tulip.dts
+++ b/arch/arm64/boot/dts/qcom/msm8939-sony-xperia-kanuti-tulip.dts
@@ -43,6 +43,13 @@ &mdss {
 };
 
 &tlmm {
+	sdc2_cd_default: sdc2-cd-default-state {
+		pins = "gpio38";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-up;
+	};
+
 	usb_id_default: usb-id-default-state {
 		pins = "gpio110";
 		function = "gpio";
@@ -158,8 +165,8 @@ &sdhc_1 {
 };
 
 &sdhc_2 {
-	pinctrl-0 = <&sdc2_default_state>;
-	pinctrl-1 = <&sdc2_sleep_state>;
+	pinctrl-0 = <&sdc2_default_state &sdc2_cd_default>;
+	pinctrl-1 = <&sdc2_sleep_state &sdc2_cd_default>;
 	pinctrl-names = "default", "sleep";
 	cd-gpios = <&tlmm 38 GPIO_ACTIVE_HIGH>;
 	status = "okay";
diff --git a/arch/arm64/boot/dts/qcom/msm8939.dtsi b/arch/arm64/boot/dts/qcom/msm8939.dtsi
index 0d9f8b951b66..2cbd4baa9b95 100644
--- a/arch/arm64/boot/dts/qcom/msm8939.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8939.dtsi
@@ -1138,13 +1138,6 @@ data-pins {
 					bias-pull-up;
 					drive-strength = <10>;
 				};
-
-				cd-pins {
-					pins = "gpio38";
-					function = "gpio";
-					drive-strength = <2>;
-					bias-pull-up;
-				};
 			};
 
 			sdc2_sleep_state: sdc2-sleep-state {
@@ -1165,13 +1158,6 @@ data-pins {
 					bias-pull-up;
 					drive-strength = <2>;
 				};
-
-				cd-pins {
-					pins = "gpio38";
-					function = "gpio";
-					drive-strength = <2>;
-					bias-disable;
-				};
 			};
 
 			wcnss_pin_a: wcnss-active-state {

-- 
2.40.1