Re: [PATCH v19 2/7] firmware: arm_rmm: Check for RMI support at init

From: Jonathan Cameron

Date: Thu Sep 24 2026 - 13:43:30 EST


On Thu, 24 Sep 2026 14:51:56 +0100
Suzuki K Poulose <suzuki.poulose@xxxxxxx> wrote:

> From: Steven Price <steven.price@xxxxxxx>
>
> Query the RMI version number and check if it is a compatible version.
> The first two feature registers are read and exposed for future code to
> use.
>
> We only support this for Little Endian kernels, the Big Endian kernel
> support is anyway marked BROKEN and is being removed.
>
> Signed-off-by: Steven Price <steven.price@xxxxxxx>
> Co-developed-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
Reviewed-by: Jonathan Cameron <jonathan.cameron@xxxxxxxxxxxxxxxx>