arm64: dts: ti: k3-am642-sk: Enable WLAN connected to SDHCI0

WL1837 module is connected to SDHCI0 in AM642 SK. Enable it here.
This will enable the WiFi functionaliy on the board.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Nikhil Devshatwar <nikhil.nd@ti.com>
Signed-off-by: Aparna M <a-m1@ti.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>
Link: https://lore.kernel.org/r/20220414133612.13365-1-a-m1@ti.com

diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 1d7db8bf3a5ced819179670c3d550723ecc17230..59f506cbd275feebedd2a0cbb7962616e1a54a6f 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -125,6 +125,31 @@
                vin-supply = <&vcc_3v3_sys>;
                gpio = <&exp1 3 GPIO_ACTIVE_HIGH>;
        };
+
+       com8_ls_en: regulator-1 {
+               compatible = "regulator-fixed";
+               regulator-name = "com8_ls_en";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-always-on;
+               regulator-boot-on;
+               pinctrl-0 = <&main_com8_ls_en_pins_default>;
+               pinctrl-names = "default";
+               gpio = <&main_gpio0 62 GPIO_ACTIVE_LOW>;
+       };
+
+       wlan_en: regulator-2 {
+               /* output of SN74AVC4T245RSVR */
+               compatible = "regulator-fixed";
+               regulator-name = "wlan_en";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+               enable-active-high;
+               pinctrl-0 = <&main_wlan_en_pins_default>;
+               pinctrl-names = "default";
+               vin-supply = <&com8_ls_en>;
+               gpio = <&main_gpio0 48 GPIO_ACTIVE_HIGH>;
+       };
 };
 
 &main_pmx0 {
@@ -216,6 +241,23 @@
                        AM64X_IOPAD(0x0270, PIN_INPUT, 0) /* (D18) ECAP0_IN_APWM_OUT */
                >;
        };
+       main_wlan_en_pins_default: main-wlan-en-pins-default {
+               pinctrl-single,pins = <
+                       AM64X_IOPAD(0x00c4, PIN_OUTPUT_PULLUP, 7) /* (V8) GPIO0_48 */
+               >;
+       };
+
+       main_com8_ls_en_pins_default: main-com8-ls-en-pins-default {
+               pinctrl-single,pins = <
+                       AM64X_IOPAD(0x00fc, PIN_OUTPUT, 7) /* (U7) PRG1_PRU0_GPO17.GPIO0_62 */
+               >;
+       };
+
+       main_wlan_pins_default: main-wlan-pins-default {
+               pinctrl-single,pins = <
+                       AM64X_IOPAD(0x00bc, PIN_INPUT, 7) /* (U8) GPIO0_46 */
+               >;
+       };
 };
 
 &mcu_uart0 {
@@ -293,6 +335,26 @@
        status = "reserved";
 };
 
+&sdhci0 {
+       vmmc-supply = <&wlan_en>;
+       bus-width = <4>;
+       non-removable;
+       cap-power-off-card;
+       keep-power-in-suspend;
+       ti,driver-strength-ohm = <50>;
+
+       #address-cells = <1>;
+       #size-cells = <0>;
+       wlcore: wlcore@2 {
+               compatible = "ti,wl1837";
+               reg = <2>;
+               pinctrl-0 = <&main_wlan_pins_default>;
+               pinctrl-names = "default";
+               interrupt-parent = <&main_gpio0>;
+               interrupts = <46 IRQ_TYPE_EDGE_FALLING>;
+       };
+};
+
 &sdhci1 {
        /* SD/MMC */
        vmmc-supply = <&vdd_mmc1>;