[Linux-stm32] [PATCH V2 3/4] ARM: dts: stm32: Add additional init state for SDMMC1 pins

[Marek Vasut]

Add "init" mux option for SDMMC1, where the CMD, CK, CKIN lines are not
configured, so they can be claimed as GPIOs early on in driver probe().
This is used for probing optional voltage level translator.

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Alexandre Torgue <alexandre.torgue at st.com>
Cc: Linus Walleij <linus.walleij at linaro.org>
Cc: Ludovic Barre <ludovic.barre at st.com>
Cc: Ulf Hansson <ulf.hansson at linaro.org>
Cc: linux-stm32 at st-md-mailman.stormreply.com
---
V2: Rebase on next-20210122
---
 arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
index d8297dfff3e6..687f3534ba22 100644
--- a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
@@ -1385,6 +1385,18 @@ pins {
 		};
 	};
 
+	sdmmc1_b4_init_pins_a: sdmmc1-b4-init-0 {
+		pins1 {
+			pinmux = <STM32_PINMUX('C', 8, AF12)>, /* SDMMC1_D0 */
+				 <STM32_PINMUX('C', 9, AF12)>, /* SDMMC1_D1 */
+				 <STM32_PINMUX('C', 10, AF12)>, /* SDMMC1_D2 */
+				 <STM32_PINMUX('C', 11, AF12)>; /* SDMMC1_D3 */
+			slew-rate = <1>;
+			drive-push-pull;
+			bias-disable;
+		};
+	};
+
 	sdmmc1_dir_pins_a: sdmmc1-dir-0 {
 		pins1 {
 			pinmux = <STM32_PINMUX('F', 2, AF11)>, /* SDMMC1_D0DIR */
@@ -1409,6 +1421,17 @@ pins {
 		};
 	};
 
+	sdmmc1_dir_init_pins_a: sdmmc1-dir-init-0 {
+		pins1 {
+			pinmux = <STM32_PINMUX('F', 2, AF11)>, /* SDMMC1_D0DIR */
+				 <STM32_PINMUX('C', 7, AF8)>, /* SDMMC1_D123DIR */
+				 <STM32_PINMUX('B', 9, AF11)>; /* SDMMC1_CDIR */
+			slew-rate = <1>;
+			drive-push-pull;
+			bias-pull-up;
+		};
+	};
+
 	sdmmc1_dir_pins_b: sdmmc1-dir-1 {
 		pins1 {
 			pinmux = <STM32_PINMUX('F', 2, AF11)>, /* SDMMC1_D0DIR */
-- 
2.29.2