From: Kishon Vijay Abraham I <kishon@xxxxxx>
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@xxxxxx>
Signed-off-by: Vignesh Raghavendra <vigneshr@xxxxxx>
Signed-off-by: Nikhil Devshatwar <nikhil.nd@xxxxxx>
Signed-off-by: Aparna M <a-m1@xxxxxx>
---
v2 -> v3: Use generic node names for the regulators as per DT Specs
v1 -> v2: Add "From" tag in commit message
arch/arm64/boot/dts/ti/k3-am642-sk.dts | 62 ++++++++++++++++++++++++++
1 file changed, 62 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 6b04745147be..a6be747e5bf1 100644
--- 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>;
--
2.17.1
