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Subject[PATCH] arm64: dts: ulcb-kf: Add support for TI WL1837
Date
This patch adds description of TI WL1837 and links interfaces
to communicate with the IC, namely the SDIO interface to WLAN.

Signed-off-by: Spyridon Papageorgiou <spapageorgiou@de.adit-jv.com>
---
arch/arm64/boot/dts/renesas/ulcb-kf.dtsi | 49 ++++++++++++++++++++++++++++++++
1 file changed, 49 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
index 7a09576..27851a7 100644
--- a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
+++ b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
@@ -38,6 +38,18 @@
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
};
+
+ wlan_en: regulator-wlan_en {
+ compatible = "regulator-fixed";
+ regulator-name = "wlan-en-regulator";
+
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+
+ gpio = <&gpio_exp_74 4 GPIO_ACTIVE_HIGH>;
+ startup-delay-us = <70000>;
+ enable-active-high;
+ };
};

&can0 {
@@ -88,6 +100,13 @@
line-name = "Audio_Out_OFF";
};

+ sd-wifi-mux {
+ gpio-hog;
+ gpios = <5 GPIO_ACTIVE_HIGH>;
+ output-low; /* Connect WL1837 */
+ line-name = "SD WiFi mux";
+ };
+
hub_pwen {
gpio-hog;
gpios = <6 GPIO_ACTIVE_HIGH>;
@@ -254,6 +273,12 @@
function = "scif1";
};

+ sdhi3_pins: sdhi3 {
+ groups = "sdhi3_data4", "sdhi3_ctrl";
+ function = "sdhi3";
+ power-source = <3300>;
+ };
+
usb0_pins: usb0 {
groups = "usb0";
function = "usb0";
@@ -273,6 +298,30 @@
status = "okay";
};

+&sdhi3 {
+ pinctrl-0 = <&sdhi3_pins>;
+ pinctrl-names = "default";
+
+ vmmc-supply = <&wlan_en>;
+ vqmmc-supply = <&wlan_en>;
+ bus-width = <4>;
+ no-1-8-v;
+ non-removable;
+ cap-power-off-card;
+ keep-power-in-suspend;
+ max-frequency = <26000000>;
+ status = "okay";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ wlcore: wlcore@2 {
+ compatible = "ti,wl1837";
+ reg = <2>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
+ };
+};
+
&usb2_phy0 {
pinctrl-0 = <&usb0_pins>;
pinctrl-names = "default";
--
2.7.4
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