ARM: dts: imx7d-pico: Add Wifi support

imx7d-pico has an ap6212 wifi chip connected to usdhc2 port.

Add support for the usdhc2 port and to the WL_REG_ON regulator
so Wifi can be functional on this board.

Signed-off-by: Vanessa Maegima <vanessa.maegima@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx7d-pico.dts b/arch/arm/boot/dts/imx7d-pico.dts
index e78c2c9..bea0095 100644 (file)
--- a/arch/arm/boot/dts/imx7d-pico.dts
+++ b/arch/arm/boot/dts/imx7d-pico.dts
@@ -52,6 +52,17 @@
                reg = <0x80000000 0x80000000>;
        };
 
+       reg_ap6212: regulator-ap6212 {
+               compatible = "regulator-fixed";
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_reg_ap6212>;
+               regulator-name = "AP6212";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               gpio = <&gpio4 16 GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+       };
+
        reg_2p5v: regulator-2p5v {
                compatible = "regulator-fixed";
                regulator-name = "2P5V";
@@ -271,6 +282,17 @@
        status = "okay";
 };
 
+&usdhc2 { /* Wifi SDIO */
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_usdhc2>;
+       no-1-8-v;
+       non-removable;
+       keep-power-in-suspend;
+       wakeup-source;
+       vmmc-supply = <&reg_ap6212>;
+       status = "okay";
+};
+
 &usdhc3 {
        pinctrl-names = "default", "state_100mhz", "state_200mhz";
        pinctrl-0 = <&pinctrl_usdhc3>;
@@ -326,6 +348,12 @@
                >;
        };
 
+       pinctrl_reg_ap6212: regap6212grp {
+               fsl,pins = <
+                       MX7D_PAD_ECSPI1_SCLK__GPIO4_IO16        0x59
+               >;
+       };
+
        pinctrl_sai1: sai1grp {
                fsl,pins = <
                        MX7D_PAD_ENET1_RX_CLK__SAI1_TX_BCLK     0x1f
@@ -348,6 +376,17 @@
                >;
        };
 
+       pinctrl_usdhc2: usdhc2grp {
+               fsl,pins = <
+                       MX7D_PAD_SD2_CMD__SD2_CMD               0x59
+                       MX7D_PAD_SD2_CLK__SD2_CLK               0x19
+                       MX7D_PAD_SD2_DATA0__SD2_DATA0           0x59
+                       MX7D_PAD_SD2_DATA1__SD2_DATA1           0x59
+                       MX7D_PAD_SD2_DATA2__SD2_DATA2           0x59
+                       MX7D_PAD_SD2_DATA3__SD2_DATA3           0x59
+               >;
+       };
+
        pinctrl_usdhc3: usdhc3grp {
                fsl,pins = <
                        MX7D_PAD_SD3_CMD__SD3_CMD               0x59