linux-kernel - Re: [PATCH v2 19/21] arm64: dts: allwinner: Add Allwinner H616 .dtsi file

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Date:   Mon, 14 Dec 2020 10:58:31 +0100
From:   Maxime Ripard <maxime@...no.tech>
To:     Andre Przywara <andre.przywara@....com>
Cc:     Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Icenowy Zheng <icenowy@...c.xyz>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh@...nel.org>,
        Clément Péron <peron.clem@...il.com>,
        Shuosheng Huang <huangshuosheng@...winnertech.com>,
        Yangtao Li <tiny.windzz@...il.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com, devicetree@...r.kernel.org
Subject: Re: [PATCH v2 19/21] arm64: dts: allwinner: Add Allwinner H616 .dtsi
 file

On Fri, Dec 11, 2020 at 01:19:32AM +0000, Andre Przywara wrote:
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		/* 512KiB reserved for ARM Trusted Firmware (BL31) */
> +		secmon_reserved: secmon@...00000 {
> +			reg = <0x0 0x40000000 0x0 0x80000>;
> +			no-map;
> +		};
> +	};

This should still be set by the firmware

> +		mmc0: mmc@...0000 {
> +			compatible = "allwinner,sun50i-h616-mmc",
> +				     "allwinner,sun50i-a100-mmc";
> +			reg = <0x04020000 0x1000>;
> +			clocks = <&ccu CLK_BUS_MMC0>, <&ccu CLK_MMC0>;
> +			clock-names = "ahb", "mmc";
> +			resets = <&ccu RST_BUS_MMC0>;
> +			reset-names = "ahb";
> +			interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
> +			pinctrl-names = "default";
> +			pinctrl-0 = <&mmc0_pins>;
> +			status = "disabled";
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};

Somewhat related: we shouldn't set the MMC speed flags in the drivers.
This is biting us on the already supported SoCs, so it would be great to
not repeat the same mistake with the new ones

Maxime

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