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From:   Eyal Reizer <eyalreizer@gmail.com>
To:     bcousson@baylibre.com, tony@atomide.com, robh+dt@kernel.org,
        mark.rutland@arm.com, linux-omap@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Cc:     Eyal Reizer <eyalr@ti.com>
Subject: [PATCH] arm: dts: am437x-sk-evm: add wilink8 support
Date:   Tue,  1 May 2018 10:24:13 +0300
Message-Id: <1525159453-32489-1-git-send-email-eyalr@ti.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

enable mmc3 used for wlan and uart1 used for bluetooth
configure the gpios used for wlan and bluetooth controls
add fixed voltage regulator used for wlan power control

Signed-off-by: Eyal Reizer <eyalr@ti.com>
---
 arch/arm/boot/dts/am437x-sk-evm.dts | 115 ++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)

diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts
index 16d9db0..afffdb1 100644
--- a/arch/arm/boot/dts/am437x-sk-evm.dts
+++ b/arch/arm/boot/dts/am437x-sk-evm.dts
@@ -15,6 +15,7 @@
 #include <dt-bindings/pwm/pwm.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
 
 / {
 	model = "TI AM437x SK EVM";
@@ -158,6 +159,22 @@
 			};
 		};
 	};
+
+	vmmcwl_fixed: fixedregulator-mmcwl {
+		/*
+		 * WL_EN is not SDIO standard compliant. It is an out of band
+		 * signal and hard to be dealt with in a standard way by the
+		 * SDIO core driver.
+		 * So modelling the WL_EN line as a regulator was a natural
+		 * choice as the MMC core already deals with MMC supplies.
+		 */
+		compatible = "regulator-fixed";
+		regulator-name = "vmmcwl_fixed";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		gpio = <&gpio4 8 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
 };
 
 &am43xx_pinmux {
@@ -424,6 +441,62 @@
 			AM4372_IOPAD(0xac4, PIN_OUTPUT | MUX_MODE0) /* usb0_drvvbus.usb0_drvvbus */
 		>;
 	};
+
+	mmc3_pins_default: pinmux_mmc3_pins_default {
+		pinctrl-single,pins = <
+			AM4372_IOPAD(0x9f0, PIN_INPUT_PULLUP | MUX_MODE3) /* (AD21) cam1_data2.mmc2_clk */
+			AM4372_IOPAD(0x9f4, PIN_INPUT_PULLUP | MUX_MODE3) /* (AE22) cam1_data3.mmc2_cmd */
+			AM4372_IOPAD(0x9f8, PIN_INPUT_PULLUP | MUX_MODE3) /* (AD22) cam1_data4.mmc2_dat0 */
+			AM4372_IOPAD(0x9fc, PIN_INPUT_PULLUP | MUX_MODE3) /* (AE23) cam1_data5.mmc2_dat1 */
+			AM4372_IOPAD(0xa00, PIN_INPUT_PULLUP | MUX_MODE3) /* (AD23) cam1_data6.mmc2_dat2 */
+			AM4372_IOPAD(0xa04, PIN_INPUT_PULLUP | MUX_MODE3) /* (AE24) cam1_data7.mmc2_dat3 */
+		>;
+	};
+
+	mmc3_pins_sleep: pinmux_mmc3_pins_sleep {
+		pinctrl-single,pins = <
+			AM4372_IOPAD(0x9f0, PIN_INPUT_PULLDOWN | MUX_MODE7) /* (AD21) cam1_data2.mmc2_clk */
+			AM4372_IOPAD(0x9f4, PIN_INPUT_PULLDOWN | MUX_MODE7) /* (AE22) cam1_data3.mmc2_cmd */
+			AM4372_IOPAD(0x9f8, PIN_INPUT_PULLDOWN | MUX_MODE7) /* (AD22) cam1_data4.mmc2_dat0 */
+			AM4372_IOPAD(0x9fc, PIN_INPUT_PULLDOWN | MUX_MODE7) /* (AE23) cam1_data5.mmc2_dat1 */
+			AM4372_IOPAD(0xa00, PIN_INPUT_PULLDOWN | MUX_MODE7) /* (AD23) cam1_data6.mmc2_dat2 */
+			AM4372_IOPAD(0xa04, PIN_INPUT_PULLDOWN | MUX_MODE7) /* (AE24) cam1_data7.mmc2_dat3 */
+		>;
+	};
+
+	wlan_pins_default: pinmux_wlan_pins_default {
+		pinctrl-single,pins = <
+			AM4372_IOPAD(0x9d0, PIN_OUTPUT_PULLDOWN | MUX_MODE7)		/* cam1_data8.gpio4_8 WL_EN */
+			AM4372_IOPAD(0x9e4, PIN_INPUT | WAKEUP_ENABLE | MUX_MODE7)	/* cam1_wen.gpio4_13 WL_IRQ */
+		>;
+	};
+
+	wlan_pins_sleep: pinmux_wlan_pins_sleep {
+		pinctrl-single,pins = <
+			AM4372_IOPAD(0x9d0, PIN_OUTPUT_PULLDOWN | MUX_MODE7)		/* cam1_data8.gpio4_8 WL_EN */
+			AM4372_IOPAD(0x9e4, PIN_INPUT | WAKEUP_ENABLE | MUX_MODE7)	/* cam1_wen.gpio4_13 WL_IRQ */
+		>;
+	};
+
+	uart1_bt_pins_default: pinmux_uart1_bt_pins_default {
+		pinctrl-single,pins = <
+			AM4372_IOPAD(0x980, PIN_INPUT | MUX_MODE0)		/* uart1_rxd.uart1_rxd */
+			AM4372_IOPAD(0x984, PIN_OUTPUT_PULLDOWN | MUX_MODE0)	/* uart1_txd.uart1_txd */
+			AM4372_IOPAD(0x978, PIN_INPUT_PULLUP | MUX_MODE0)	/* uart1_ctsn.uart1_ctsn */
+			AM4372_IOPAD(0x97c, PIN_OUTPUT_PULLDOWN | MUX_MODE0)	/* uart1_rtsn.uart1_rtsn */
+			AM4372_IOPAD(0x9cc, PIN_OUTPUT_PULLDOWN | MUX_MODE7)	/* cam1_data9.gpio4_7 BT_EN */
+		>;
+	};
+
+	uart1_bt_pins_sleep: pinmux_uart1_bt_pins_sleep {
+		pinctrl-single,pins = <
+			AM4372_IOPAD(0x980, PIN_OUTPUT_PULLDOWN | MUX_MODE7)	/* uart1_rxd.uart1_rxd */
+			AM4372_IOPAD(0x984, PIN_OUTPUT_PULLDOWN | MUX_MODE7)	/* uart1_txd.uart1_txd */
+			AM4372_IOPAD(0x978, PIN_OUTPUT_PULLDOWN | MUX_MODE7)	/* uart1_ctsn.uart1_ctsn */
+			AM4372_IOPAD(0x97c, PIN_OUTPUT_PULLDOWN | MUX_MODE7)	/* uart1_rtsn.uart1_rtsn */
+			AM4372_IOPAD(0x9cc, PIN_OUTPUT_PULLUP | MUX_MODE7)	/* cam1_data9.gpio4_7 BT_EN */
+		>;
+	};
 };
 
 &i2c0 {
@@ -606,6 +679,10 @@
 	status = "okay";
 };
 
+&gpio4 {
+	status = "okay";
+};
+
 &gpio5 {
 	status = "okay";
 };
@@ -620,6 +697,44 @@
 	cd-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
 };
 
+&uart1 {
+	status = "okay";
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&uart1_bt_pins_default>;
+	pinctrl-1 = <&uart1_bt_pins_sleep>;
+};
+
+&mmc3 {
+	status = "okay";
+	/*
+	 * these are on the crossbar and are outlined in the
+	 * xbar-event-map element
+	 */
+	dmas = <&edma_xbar 30 0 1>,
+		<&edma_xbar 31 0 2>;
+	dma-names = "tx", "rx";
+	vmmc-supply = <&vmmcwl_fixed>;
+	bus-width = <4>;
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&mmc3_pins_default>;
+	pinctrl-1 = <&mmc3_pins_sleep>;
+	cap-power-off-card;
+	keep-power-in-suspend;
+	ti,non-removable;
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+	wlcore: wlcore@0 {
+		compatible = "ti,wl1835";
+		pinctrl-names = "default", "sleep";
+		pinctrl-0 = <&wlan_pins_default>;
+		pinctrl-1 = <&wlan_pins_sleep>;
+		reg = <2>;
+		interrupt-parent = <&gpio4>;
+		interrupts = <13 IRQ_TYPE_LEVEL_HIGH>;
+	};
+};
+
 &usb2_phy1 {
 	status = "okay";
 };
-- 
2.7.4