linux-kernel - Re: [PATCH] arm64: dts: rockchip: add BT/wifi nodes to Pinephone Pro

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Message-ID: <57395b20-6352-8414-3078-cdad6bbbe999@postmarketos.org>
Date:   Tue, 6 Sep 2022 18:38:38 +0100
From:   Caleb Connolly <kc@...tmarketos.org>
To:     Tom Fitzhenry <tom@...-fitzhenry.me.uk>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        phone-devel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: rockchip: add BT/wifi nodes to Pinephone Pro



On 06/09/2022 13:47, Tom Fitzhenry wrote:
> Pinephone Pro includes a AzureWave AW-CM256SM wifi (sdio0) and
> bt (uart0) combo module, which is based on Cypress
> CYP43455 (BCM43455).
> 
> Signed-off-by: Tom Fitzhenry <tom@...-fitzhenry.me.uk>
> ---
>   .../dts/rockchip/rk3399-pinephone-pro.dts     | 69 +++++++++++++++++++
>   1 file changed, 69 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts b/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts
> index 2e058c3150256..096238126e4c1 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts
> +++ b/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts
> @@ -43,6 +43,20 @@ key-power {
>   		};
>   	};
> 
> +	/* Power sequence for SDIO WiFi module */

This comment isn't needed, instead give the node a better name/label
> +	sdio_pwrseq: sdio-pwrseq {

	wifi_pwrseq: sdio-pwrseq-wifi {
> +		compatible = "mmc-pwrseq-simple";
> +		clocks = <&rk818 1>;
> +		clock-names = "ext_clock";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&wifi_enable_h_pin>;
> +		post-power-on-delay-ms = <100>;
> +		power-off-delay-us = <500000>;
> +
> +		/* WL_REG_ON on module */
> +		reset-gpios = <&gpio0 RK_PB2 GPIO_ACTIVE_LOW>;
> +	};
> +
>   	vcc_sys: vcc-sys-regulator {
>   		compatible = "regulator-fixed";
>   		regulator-name = "vcc_sys";
> @@ -360,11 +374,31 @@ vsel2_pin: vsel2-pin {
>   		};
>   	};
> 
> +	sdio-pwrseq {
> +		wifi_enable_h_pin: wifi-enable-h-pin {
> +			rockchip,pins = <0 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
> +		};
> +	};
> +
>   	sound {
>   		vcc1v8_codec_en: vcc1v8-codec-en {
>   			rockchip,pins = <3 RK_PA4 RK_FUNC_GPIO &pcfg_pull_down>;
>   		};
>   	};
> +
> +	wireless-bluetooth {
> +		bt_wake_pin: bt-wake-pin {
> +			rockchip,pins = <2 RK_PD2 RK_FUNC_GPIO &pcfg_pull_none>;
> +		};
> +
> +		bt_host_wake_pin: bt-host-wake-pin {
> +			rockchip,pins = <0 RK_PA4 RK_FUNC_GPIO &pcfg_pull_none>;
> +		};
> +
> +		bt_reset_pin: bt-reset-pin {
> +			rockchip,pins = <0 RK_PB1 RK_FUNC_GPIO &pcfg_pull_none>;
> +		};
> +	};
>   };
> 
>   &sdmmc {
> @@ -380,6 +414,20 @@ &sdmmc {
>   	status = "okay";
>   };
> 
> +&sdio0 {
> +	bus-width = <4>;
> +	cap-sd-highspeed;
> +	cap-sdio-irq;
> +	disable-wp;
> +	keep-power-in-suspend;
> +	mmc-pwrseq = <&sdio_pwrseq>;
> +	non-removable;
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&sdio0_bus4 &sdio0_cmd &sdio0_clk>;
> +	sd-uhs-sdr104;
> +	status = "okay";
> +};
> +
>   &sdhci {
>   	bus-width = <8>;
>   	mmc-hs200-1_8v;
> @@ -393,6 +441,27 @@ &tsadc {
>   	status = "okay";
>   };
> 
> +&uart0 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&uart0_xfer &uart0_cts &uart0_rts>;
> +	uart-has-rtscts;
> +	status = "okay";
> +
> +	bluetooth {
> +		compatible = "brcm,bcm4345c5";
> +		clocks = <&rk818 1>;
> +		clock-names = "lpo";
> +		device-wakeup-gpios = <&gpio2 RK_PD2 GPIO_ACTIVE_HIGH>;
> +		host-wakeup-gpios = <&gpio0 RK_PA4 GPIO_ACTIVE_HIGH>;
> +		max-speed = <1500000>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&bt_host_wake_pin &bt_wake_pin &bt_reset_pin>;
> +		shutdown-gpios = <&gpio0 RK_PB1 GPIO_ACTIVE_HIGH>;
> +		vbat-supply = <&vcc3v3_sys>;
> +		vddio-supply = <&vcc_1v8>;
> +	};
> +};
> +
>   &uart2 {
>   	status = "okay";
>   };
> --
> 2.37.1
>