Adding a new platform: renesas rz

[Robert Marko]

On Mon, 30 Oct 2023 at 10:40, Michele Bisogno <micbis.openwrt at gmail.com> wrote:
>
> Hi,
>
> I've been a happy OpenWRT user for many years now, always buying
> routers that could allow me to run it easily.

Hi, nice to hear this.

>
> I've been working (actually only in my free time as a hobby) on
> porting OpenWRT onto this Renesas board:
> https://www.renesas.com/eu/en/products/microcontrollers-microprocessors/rz-mpus/rzg2l-evkit-rzg2l-evaluation-board-kit
> which features this Arm Cortex-A55 based device:
> https://www.renesas.com/eu/en/products/microcontrollers-microprocessors/rz-mpus/rzg2l-general-purpose-microprocessors-dual-core-arm-cortex-a55-12-ghz-cpus-and-single-core-arm-cortex-m33
>
> I guess this is a new platform, since it does not really fit in any of
> the already supported ones.
>
> I got it working and I am polishing the patch before submitting it.
> The support of this device is already mainlined in the Linux kernel,
> so I am using 6.1 as is with the appropriate config.
> Arm Trusted Firmware and u-boot are instead taken from the respective
> Renesas forks, available on github.

Great, these Reneas SoC-s are rather well supported in respective
upstream projects.

>
> However this is the first time I do that, and I am still reading and
> learning, so I would like to get opinions, hints, why not constructive
> criticism and hopefully encouragement.

I definitively encourage people to contribute towards more HW support,
especially HW which is mostly upstream.

>
> For example, naming (renesas? renesas-rz? rz?) and structure of the
> subfolders. There are other variants I would like to add: RZ/G2LC,
> RZ/G2UL and maybe others.

To me, just "renesas" sounds good and then you can introduce the individual
SoC families as subtargets.

Regards,
Robert
>
> System
>
> HostnameOpenWrt
> ModelRenesas SMARC EVK based on r9a07g044l2
> ArchitectureARMv8 Processor rev 0
> Target Platformrz/g2l
> Firmware VersionOpenWrt SNAPSHOT r24187-bb8fd41f9a / LuCI Master
> git-23.294.26440-30a8a0d
> Kernel Version6.1.59
> Local Time2023-10-29 07:44:17
> Uptime0h 9m 11s
> Load Average0.13, 0.08, 0.05
>
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