arm64: dts: imx8mm-kontron: Add support for ultra high speed modes on SD card

[ Upstream commit ec1e91d400bf21def54c441552bdf2976ce36e3b ]

In order to use ultra high speed modes (UHS) on the SD card slot, we
add matching pinctrls and fix the voltage switching for LDO5 of the
PMIC, by providing the SD_VSEL pin as GPIO to the PMIC driver.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Stable-dep-of: 008820524844 ("arm64: dts: imx8mm-kontron: Disable pull resistors for SD card signals on BL board")
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts
index 67e768032320a94fc2b2434ef0190948bab11df3..25886622c8c405514592ff259d0a228c002e0894 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts
@@ -191,8 +191,10 @@
 };
 
 &usdhc2 {
-       pinctrl-names = "default";
+       pinctrl-names = "default", "state_100mhz", "state_200mhz";
        pinctrl-0 = <&pinctrl_usdhc2>;
+       pinctrl-1 = <&pinctrl_usdhc2_100mhz>;
+       pinctrl-2 = <&pinctrl_usdhc2_200mhz>;
        vmmc-supply = <&reg_vdd_3v3>;
        vqmmc-supply = <&reg_nvcc_sd>;
        cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>;
@@ -321,4 +323,28 @@
                        MX8MM_IOMUXC_SD2_CD_B_GPIO2_IO12                0x019
                >;
        };
+
+       pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
+               fsl,pins = <
+                       MX8MM_IOMUXC_SD2_CLK_USDHC2_CLK                 0x194
+                       MX8MM_IOMUXC_SD2_CMD_USDHC2_CMD                 0x1d4
+                       MX8MM_IOMUXC_SD2_DATA0_USDHC2_DATA0             0x1d4
+                       MX8MM_IOMUXC_SD2_DATA1_USDHC2_DATA1             0x1d4
+                       MX8MM_IOMUXC_SD2_DATA2_USDHC2_DATA2             0x1d4
+                       MX8MM_IOMUXC_SD2_DATA3_USDHC2_DATA3             0x1d4
+                       MX8MM_IOMUXC_SD2_CD_B_GPIO2_IO12                0x019
+               >;
+       };
+
+       pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
+               fsl,pins = <
+                       MX8MM_IOMUXC_SD2_CLK_USDHC2_CLK                 0x196
+                       MX8MM_IOMUXC_SD2_CMD_USDHC2_CMD                 0x1d6
+                       MX8MM_IOMUXC_SD2_DATA0_USDHC2_DATA0             0x1d6
+                       MX8MM_IOMUXC_SD2_DATA1_USDHC2_DATA1             0x1d6
+                       MX8MM_IOMUXC_SD2_DATA2_USDHC2_DATA2             0x1d6
+                       MX8MM_IOMUXC_SD2_DATA3_USDHC2_DATA3             0x1d6
+                       MX8MM_IOMUXC_SD2_CD_B_GPIO2_IO12                0x019
+               >;
+       };
 };

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
index 646615ca4b48ba0d3a49c01eeb7acf439582a30c..1b9fc3a926fcb969b2328183752f3f9761da0268 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
@@ -86,6 +86,7 @@
                pinctrl-0 = <&pinctrl_pmic>;
                interrupt-parent = <&gpio1>;
                interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+               sd-vsel-gpios = <&gpio1 4 GPIO_ACTIVE_HIGH>;
 
                regulators {
                        reg_vdd_soc: BUCK1 {
@@ -228,6 +229,7 @@
        pinctrl_pmic: pmicgrp {
                fsl,pins = <
                        MX8MM_IOMUXC_GPIO1_IO00_GPIO1_IO0               0x141
+                       MX8MM_IOMUXC_GPIO1_IO04_GPIO1_IO4               0x141
                >;
        };