[PATCH 04/17] ARCH: arm: dts: imx6qdl-kontron-samx6i: add SMARC SDIO interface

[Marco Felsch <m.felsch@pengutronix.de>]

Add support according the SMARC Spec 1.1 [1] and provided schematics.
Due to the lack of hardware the interface can't be tested right now.

[1] https://sget.org/standards/smarc

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
---
 arch/arm/boot/dts/imx6qdl-kontron-samx6i.dtsi | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm/boot/dts/imx6qdl-kontron-samx6i.dtsi b/arch/arm/boot/dts/imx6qdl-kontron-samx6i.dtsi
index a92f6e31fd71..b96684ff92e8 100644
--- a/arch/arm/boot/dts/imx6qdl-kontron-samx6i.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-kontron-samx6i.dtsi
@@ -364,6 +364,21 @@
 		>;
 	};
 
+	pinctrl_usdhc3: usdhc3grp {
+		fsl,pins = <
+			MX6QDL_PAD_SD3_CLK__SD3_CLK 0x17059
+			MX6QDL_PAD_SD3_CMD__SD3_CMD 0x17059
+			MX6QDL_PAD_SD3_DAT0__SD3_DATA0 0x17059
+			MX6QDL_PAD_SD3_DAT1__SD3_DATA1 0x17059
+			MX6QDL_PAD_SD3_DAT2__SD3_DATA2 0x17059
+			MX6QDL_PAD_SD3_DAT3__SD3_DATA3 0x17059
+
+			MX6QDL_PAD_NANDF_CS1__GPIO6_IO14 0x1b0b0 /* CD */
+			MX6QDL_PAD_ENET_RXD1__GPIO1_IO26 0x1b0b0 /* WP */
+			MX6QDL_PAD_ENET_TXD1__GPIO1_IO29 0x1b0b0 /* PWR_EN */
+		>;
+	};
+
 	pinctrl_usdhc4: usdhc4grp {
 		fsl,pins = <
 			MX6QDL_PAD_SD4_CLK__SD4_CLK 0x17059
@@ -428,6 +443,15 @@
 	vbus-supply = <&reg_5p0v_s0>;
 };
 
+/* SDIO */
+&usdhc3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usdhc3>;
+	cd-gpios = <&gpio6 14 GPIO_ACTIVE_LOW>;
+	wp-gpios = <&gpio1 26 GPIO_ACTIVE_HIGH>;
+	no-1-8-v;
+};
+
 /* SDMMC */
 &usdhc4 {
 	/* Internal eMMC, optional on some boards */
-- 
2.20.1