[PATCH 1/3] imx8mn: evk: add README

[Fabio Estevam]

Hi Peng,

On Mon, Jan 6, 2020 at 5:04 AM Peng Fan <peng.fan at nxp.com> wrote:

> +Quick Start
> +===========
> +- Build the ARM Trusted firmware binary
> +- Get ddr firmware

I prefer you write "Get firmware-imx package" instead because this is
the real package name and it contains not only DDR related firmware.

As per the "Rev. L4.19.35_1.1.0, 11/2019" i.MX Linux® Release Notes :
"i.MX Firmware including firmware for VPU, DDR, EPDC, HDMI, and SDMA.

> +- Build U-Boot
> +- Boot
> +
> +Get and Build the ARM Trusted firmware
> +======================================
> +Note: srctree is U-Boot source directory
> +Get ATF from: https://source.codeaurora.org/external/imx/imx-atf
> +branch: imx_4.19.35_1.1.0

Here you use the ATF from imx_4.19.35_1.1.0.

> +$ make PLAT=imx8mn bl31
> +$ cp build/imx8mn/release/bl31.bin $(srctree)
> +
> +Get the ddr firmware
> +=============================
> +$ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.0.bin

but here you use the firmware-imx-8.0 version.

According to the "Rev. L4.19.35_1.1.0, 11/2019" i.MX Linux® Release
Notes the firmware-imx version in this release is
"firmware-imx-8.5.bin" instead.

Shouldn't we use all the software components from the same NXP BSP
release to avoid potential mismatch?

Please clarfify.

Thanks