[PATCH v2 16/19] arm: rmobile: Add CPU detection for RZ/G2L

[Marek Vasut]

On 10/9/23 18:46, Paul Barker wrote:
> The ARM TrustedFirmware code for the Renesas RZ/G2L SoC family passes a
> devicetree blob to the bootloader as an argument in the same was
> previous R-Car Gen3/Gen4 SoCs. This blob contains a compatible string
> which can be used to identify the particular SoC we are running on.
> 
> We do this as reading the DEVID & PRR registers from u-boot is not
> sufficient to differentiate between the R9A07G044L (RZ/G2L) and
> R9A07G044C (RZ/G2LC) SoCs. An additional read from offset 0x11861178 is
> needed but this address is in the OTP region which can only be read from
> the secure world (i.e. TrustedFirmware). So we have to rely on
> TrustedFirmware to determine the SoC and pass this information to u-boot
> via an fdt blob.
> 
> Signed-off-by: Paul Barker <paul.barker.ct at bp.renesas.com>
> Reviewed-by: Biju Das <biju.das.jz at bp.renesas.com>
> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj at bp.renesas.com>

Reviewed-by: Marek Vasut <marek.vasut+renesas at mailbox.org>