Re: [PATCH 1/2] dt-bindings: remoteproc: imx_rproc: Support i.MX8MN/P MMIO

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On 7/10/23 10:13, Krzysztof Kozlowski wrote:
On 08/07/2023 01:26, Marek Vasut wrote:
The MX8M CM7 boot via SMC call is problematic, since not all versions
of ATF support this interface. Document MMIO support used to boot the
CM7 on MX8MN/MP instead and discern MMIO interface using DT compatible
string. Document GPR register syscon phandle which is required by the
MMIO interface too.

Signed-off-by: Marek Vasut <marex@xxxxxxx>
Note that the MMIO being discerned using compatible string is similar
approach to "st,stm32mp1-rcc" vs "st,stm32mp1-rcc-secure".

Same hardware should not have two compatibles, depending on the bus it is.

Yes, I know, but for whatever reason the ST does, so I picked the same approach here. What else would you suggest, boolean properly like Peng wrote ?

The compatible is also easier to handle on driver level, at least in Linux, see 2/2 .

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