linux-kernel - Re: [PATCH 2/3] arm64: dts: rockchip: add PX30-µQ7 (Ringneck) SoM with Haikou baseboard

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Message-ID: <0bc7d14f-6e38-009a-9ec7-46d92042b44b@theobroma-systems.com>
Date:   Thu, 22 Sep 2022 13:56:30 +0200
From:   Quentin Schulz <quentin.schulz@...obroma-systems.com>
To:     Quentin Schulz <foss+kernel@...il.net>
Cc:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        heiko@...ech.de, dmitry.torokhov@...il.com,
        klaus.goger@...obroma-systems.com, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-input@...r.kernel.org
Subject: Re: [PATCH 2/3] arm64: dts: rockchip: add PX30-µQ7 (Ringneck) SoM with Haikou baseboard

Hi all,

On 9/22/22 12:12, Quentin Schulz wrote:
[...]
> diff --git a/arch/arm64/boot/dts/rockchip/px30-ringneck.dtsi b/arch/arm64/boot/dts/rockchip/px30-ringneck.dtsi
> new file mode 100644
> index 000000000000..74a7f1182c21
> --- /dev/null
> +++ b/arch/arm64/boot/dts/rockchip/px30-ringneck.dtsi
> @@ -0,0 +1,347 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright (c) 2022 Theobroma Systems Design und Consulting GmbH
> + */
> +
> +/dts-v1/;
> +#include "px30.dtsi"
> +
> +/ {
> +	aliases {
> +		mmc0 = &emmc;
> +		mmc1 = &sdio;
> +		rtc0 = &rtc_twi;
> +		rtc1 = &rk809;
> +	};
> +
> +	emmc_pwrseq: emmc-pwrseq {
> +		compatible = "mmc-pwrseq-emmc";
> +		pinctrl-0 = <&emmc_reset>;
> +		pinctrl-names = "default";
> +		reset-gpios = <&gpio1 RK_PB3 GPIO_ACTIVE_HIGH>;
> +	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&module_led_pin>;
> +		status = "okay";
> +
> +		module_led: led-0 {
> +			label = "module_led";
> +			gpios = <&gpio1 RK_PB0 GPIO_ACTIVE_HIGH>;
> +			linux,default-trigger = "heartbeat";
> +		};
> +	};
> +
> +	vcc5v0_sys: vccsys {
> +		compatible = "regulator-fixed";
> +		regulator-name = "vcc5v0_sys";
> +		regulator-always-on;
> +		regulator-boot-on;
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +	};
> +};
> +
> +&cpu0 {
> +	cpu-supply = <&vdd_arm>;
> +};
> +
> +&cpu1 {
> +	cpu-supply = <&vdd_arm>;
> +};
> +
> +&cpu2 {
> +	cpu-supply = <&vdd_arm>;
> +};
> +
> +&cpu3 {
> +	cpu-supply = <&vdd_arm>;
> +};
> +
> +&emmc {
> +	bus-width = <8>;
> +	cap-mmc-highspeed;
> +	mmc-hs200-1_8v;
> +	supports-emmc;
> +	mmc-pwrseq = <&emmc_pwrseq>;
> +	non-removable;
> +	vmmc-supply = <&vcc_3v3>;
> +	vqmmc-supply = <&vcc_emmc>;
> +
> +	status = "okay";
> +};
> +
> +/* On-module TI DP83825I PHY but no connector, enable in carrierboard */
> +&gmac {
> +	snps,reset-gpio = <&gpio3 RK_PB0 GPIO_ACTIVE_LOW>;
> +	snps,reset-active-low;
> +	snps,reset-delays-us = <0 50000 50000>;
> +	phy-supply = <&vcc_3v3>;
> +	clock_in_out = "output";
> +};
> +

I forgot:

&gpio2 {
         /*
          * The Qseven BIOS_DISABLE signal on the PX30-µQ7 keeps the 
on-module
          * eMMC powered-down initially (in fact it keeps the reset signal
          * asserted). BIOS_DISABLE_OVERRIDE pin allows to re-enable eMMC.
          */
         bios_disable_override {
                 gpios = <RK_PB5 GPIO_ACTIVE_LOW>;
                 output-high;
                 line-name = "bios_disable_override";
                 gpio-hog;
         };
};

Since I had this change in the bootloader that was enough during my 
tests, but better not rely on the bootloader whenever/wherever possible :)

I'll wait a bit for reviews before sending a v2 just for that.

Cheers,
Quentin