linux-kernel - [PATCH v2 8/8] ARM: dts: sun8i: a83t: bananapi-m3: Enable AP6212 WiFi on mmc1

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Message-Id: <20171018083138.14517-9-wens@csie.org>
Date:   Wed, 18 Oct 2017 16:31:38 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Lee Jones <lee.jones@...aro.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:     Chen-Yu Tsai <wens@...e.org>, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com,
        Quentin Schulz <quentin.schulz@...e-electrons.com>
Subject: [PATCH v2 8/8] ARM: dts: sun8i: a83t: bananapi-m3: Enable AP6212 WiFi on mmc1

The WiFi side of the AP6212 WiFi/BT combo module is connected to
mmc1. There are also GPIOs for enable and interrupts. An external
clock from the AC100 RTC is also used.

Enable WiFi on this board by enabling mmc1 and adding the power
sequencing clocks and GPIO, as well as the chip's interrupt line.

Signed-off-by: Chen-Yu Tsai <wens@...e.org>
---
 arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts b/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts
index 78036b2f2ab4..c606af3dbfed 100644
--- a/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts
+++ b/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts
@@ -68,6 +68,17 @@
 		enable-active-high;
 		gpio = <&pio 3 24 GPIO_ACTIVE_HIGH>; /* PD24 */
 	};
+
+	wifi_pwrseq: wifi_pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		clocks = <&ac100_rtc 1>;
+		clock-names = "ext_clock";
+		/* The WiFi low power clock must be 32768 Hz */
+		assigned-clocks = <&ac100_rtc 1>;
+		assigned-clock-rates = <32768>;
+		/* enables internal regulator and de-asserts reset */
+		reset-gpios = <&r_pio 0 2 GPIO_ACTIVE_LOW>; /* PL2 WL-PMU-EN */
+	};
 };
 
 &ehci0 {
@@ -87,6 +98,23 @@
 	status = "okay";
 };
 
+&mmc1 {
+	vmmc-supply = <&reg_dldo1>;
+	vqmmc-supply = <&reg_dldo1>;
+	mmc-pwrseq = <&wifi_pwrseq>;
+	bus-width = <4>;
+	non-removable;
+	status = "okay";
+
+	brcmf: wifi@1 {
+		reg = <1>;
+		compatible = "brcm,bcm4329-fmac";
+		interrupt-parent = <&r_pio>;
+		interrupts = <0 3 IRQ_TYPE_LEVEL_LOW>;
+		interrupt-names = "host-wake";
+	};
+};
+
 &mmc2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&mmc2_8bit_emmc_pins>;
-- 
2.14.2