linux-kernel - [PATCH 1/2] ARM: dts: stm32: add stm32f7 SDIO sleep pins

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Date:   Mon,  2 Oct 2023 13:13:38 -0400
From:   Ben Wolsieffer <ben.wolsieffer@...ring.com>
To:     linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Ben Wolsieffer <ben.wolsieffer@...ring.com>
Subject: [PATCH 1/2] ARM: dts: stm32: add stm32f7 SDIO sleep pins

Add SDIO sleep pin definitions that place the pins in analog mode to
save power.

Signed-off-by: Ben Wolsieffer <ben.wolsieffer@...ring.com>
---
 arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi b/arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi
index 9f65403295ca..26f91ca0d458 100644
--- a/arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi
+++ b/arch/arm/boot/dts/st/stm32f7-pinctrl.dtsi
@@ -253,6 +253,17 @@ pins2 {
 				};
 			};
 
+			sdio_pins_sleep_a: sdio-pins-sleep-a-0 {
+				pins {
+					pinmux = <STM32_PINMUX('C', 8, ANALOG)>, /* SDMMC1 D0 */
+						 <STM32_PINMUX('C', 9, ANALOG)>, /* SDMMC1 D1 */
+						 <STM32_PINMUX('C', 10, ANALOG)>, /* SDMMC1 D2 */
+						 <STM32_PINMUX('C', 11, ANALOG)>, /* SDMMC1 D3 */
+						 <STM32_PINMUX('C', 12, ANALOG)>, /* SDMMC1 CLK */
+						 <STM32_PINMUX('D', 2, ANALOG)>; /* SDMMC1 CMD */
+				};
+			};
+
 			sdio_pins_b: sdio-pins-b-0 {
 				pins {
 					pinmux = <STM32_PINMUX('G', 9, AF11)>, /* SDMMC2 D0 */
@@ -284,6 +295,17 @@ pins2 {
 				};
 			};
 
+			sdio_pins_sleep_b: sdio-pins-sleep-b-0 {
+				pins {
+					pinmux = <STM32_PINMUX('G', 9, ANALOG)>, /* SDMMC2 D0 */
+						 <STM32_PINMUX('G', 10, ANALOG)>, /* SDMMC2 D1 */
+						 <STM32_PINMUX('B', 3, ANALOG)>, /* SDMMC2 D2 */
+						 <STM32_PINMUX('B', 4, ANALOG)>, /* SDMMC2 D3 */
+						 <STM32_PINMUX('D', 6, ANALOG)>, /* SDMMC2 CLK */
+						 <STM32_PINMUX('D', 7, ANALOG)>; /* SDMMC2 CMD */
+				};
+			};
+
 			can1_pins_a: can1-0 {
 				pins1 {
 					pinmux = <STM32_PINMUX('A', 12, AF9)>; /* CAN1_TX */
-- 
2.42.0