Re: [PATCH 2/3] ARM: IMX8MP: add initial support for Variscite DT8MCustomBoard with iMX8MP

[Sascha Hauer <sha@pengutronix.de>]

On Mon, Feb 20, 2023 at 10:06:14AM +0100, Michael Kopfensteiner wrote:
> The Variscite DT8MCustomBoard is an eval board for the several Variscite
> SOMs of their "DART" product line. This commit adds support for that
> baseboard in combination with a DART-MX8M-PLUS SOM. The commit contains
> an adapted version of the vendors device tree [1] and the vendors DDR
> timings, taken from Variscite's public U-Boot sources [2].
> 
> Both files have been slightly changed to integrate well with barebox.
> 
> The boardsupport added with this commit does not yet support every
> feature of the DT8MCustomBoard. Yet it already supports all basic
> necessities to make use of barebox.
> 
> [1] https://github.com/varigit/linux-imx/tree/3f94f35bda827e8aa06beadb10c77358cfb6dad9
> [2] https://github.com/varigit/uboot-imx/tree/7cad2ff68a508c71c572151a85bc786711bab969
> 
> +
> +#include "imx8mp-var-dart.dtsi"
> +
> +/ {
> +	model = "Variscite DART-MX8M-PLUS on DT8MCustomBoard 2.x";
> +
> +	// use the memory controller instead
> +	/delete-node/ memory@40000000;
> +
> +	chosen {
> +		stdout-path = &uart1;
> +
> +		environment-sd {
> +			compatible = "barebox,environment";
> +			device-path = &usdhc2, "partname:0";
> +			status = "disabled";
> +		};
> +
> +		environment-emmc {
> +			compatible = "barebox,environment";
> +			device-path = &usdhc2, "partname:0";
> +			status = "disabled";
> +		};
> +	};

usdhc2 can't be both SD and eMMC. "partname:0" is the first MBR
partition. Is that what you mean here? Normally we put the environment
in an unpartitioned area before the first partition.

Sascha

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