[PATCH v2] arm64: dts: allwinner: a64: orangepi-win: Add wifi and bluetooth nodes

[PATCH v2] arm64: dts: allwinner: a64: orangepi-win: Add wifi and bluetooth nodes

[Jernej Skrabec]

The AP6212 is based on the Broadcom BCM43430 or BCM43438. The WiFi side
identifies as BCM43430, while the Bluetooth side identifies as BCM43438.

WiFi is connected to mmc1 and the Bluetooth side is connected to UART1
in a 4 wire configuration. Same as the WiFi side, due to being the same
chip and package, DLDO2 provides overall power via VBAT, and DLDO4
provides I/O power via VDDIO. The RTC clock output provides the LPO low
power clock at 32.768 kHz.

This patch enables WiFi and Bluetooth on OrangePi Win boards and adds
missing LPO clock on the WiFi side. PCM connection also exists for
Bluetooth audio, but it's not used here.

Bluetooth UART speed is set to 1.5 MBaud in order to be able transmit
audio. While module supports even higher speeds, currently sunxi clock
driver doesn't support higher speed.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
---
Changes from v1:
- fix commit log by stating that current clock driver doesn't support
  higher speeds instead of UART driver

 .../dts/allwinner/sun50i-a64-orangepi-win.dts | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-orangepi-win.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-orangepi-win.dts
index 510f661229dc..5ef3c62c765e 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-orangepi-win.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-orangepi-win.dts
@@ -109,6 +109,8 @@
 	wifi_pwrseq: wifi_pwrseq {
 		compatible = "mmc-pwrseq-simple";
 		reset-gpios = <&r_pio 0 8 GPIO_ACTIVE_LOW>; /* PL8 */
+		clocks = <&rtc 1>;
+		clock-names = "ext_clock";
 	};
 };
 
@@ -170,6 +172,14 @@
 	bus-width = <4>;
 	non-removable;
 	status = "okay";
+
+	brcmf: wifi@1 {
+		reg = <1>;
+		compatible = "brcm,bcm4329-fmac";
+		interrupt-parent = <&r_pio>;
+		interrupts = <0 7 IRQ_TYPE_LEVEL_LOW>; /* PL7 */
+		interrupt-names = "host-wake";
+	};
 };
 
 &ohci0 {
@@ -342,7 +352,20 @@
 &uart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>;
+	uart-has-rtscts;
 	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm43438-bt";
+		max-speed = <1500000>;
+		clocks = <&rtc 1>;
+		clock-names = "lpo";
+		vbat-supply = <&reg_dldo2>;
+		vddio-supply = <&reg_dldo4>;
+		device-wakeup-gpios = <&r_pio 0 6 GPIO_ACTIVE_HIGH>; /* PL6 */
+		host-wakeup-gpios = <&r_pio 0 5 GPIO_ACTIVE_HIGH>; /* PL5 */
+		shutdown-gpios = <&r_pio 0 4 GPIO_ACTIVE_HIGH>; /* PL4 */
+	};
 };
 
 /* On Pi-2 connector, RTS/CTS optional */
-- 
2.21.0

Re: [PATCH v2] arm64: dts: allwinner: a64: orangepi-win: Add wifi and bluetooth nodes

[Maxime Ripard]

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On Tue, May 14, 2019 at 10:54:45PM +0200, Jernej Skrabec wrote:
> The AP6212 is based on the Broadcom BCM43430 or BCM43438. The WiFi side
> identifies as BCM43430, while the Bluetooth side identifies as BCM43438.
>
> WiFi is connected to mmc1 and the Bluetooth side is connected to UART1
> in a 4 wire configuration. Same as the WiFi side, due to being the same
> chip and package, DLDO2 provides overall power via VBAT, and DLDO4
> provides I/O power via VDDIO. The RTC clock output provides the LPO low
> power clock at 32.768 kHz.
>
> This patch enables WiFi and Bluetooth on OrangePi Win boards and adds
> missing LPO clock on the WiFi side. PCM connection also exists for
> Bluetooth audio, but it's not used here.
>
> Bluetooth UART speed is set to 1.5 MBaud in order to be able transmit
> audio. While module supports even higher speeds, currently sunxi clock
> driver doesn't support higher speed.
>
> Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>

Queued for 5.3, thanks

Maxime

--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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