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boundary="------------6rtDB2wNy0caBsrxCddQMIAB"; protected-headers="v1" From: Matt Coster To: Marek Vasut Cc: Adam Ford , Conor Dooley , David Airlie , Frank Binns , Alessio Belle , Alexandru Dadu , Geert Uytterhoeven , Krzysztof Kozlowski , Kuninori Morimoto , Maarten Lankhorst , Magnus Damm , Maxime Ripard , Rob Herring , Simona Vetter , Thomas Zimmermann , devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-renesas-soc@vger.kernel.org Message-ID: Subject: Re: [PATCH 1/3] dt-bindings: gpu: img,powervr-rogue: Document GX6250 GPU in Renesas R-Car M3-W/M3-W+ References: <20251013190210.142436-1-marek.vasut+renesas@mailbox.org> In-Reply-To: <20251013190210.142436-1-marek.vasut+renesas@mailbox.org> --------------6rtDB2wNy0caBsrxCddQMIAB Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 13/10/2025 20:01, Marek Vasut wrote: > Document Imagination Technologies PowerVR Rogue GX6250 BNVC 4.45.2.58 > present in Renesas R-Car R8A77960 M3-W and R8A77961 M3-W+ SoC. >=20 > Signed-off-by: Marek Vasut > --- > Cc: Adam Ford > Cc: Conor Dooley > Cc: David Airlie > Cc: Frank Binns > Cc: Geert Uytterhoeven > Cc: Krzysztof Kozlowski > Cc: Kuninori Morimoto > Cc: Maarten Lankhorst > Cc: Magnus Damm > Cc: Matt Coster > Cc: Maxime Ripard > Cc: Rob Herring > Cc: Simona Vetter > Cc: Thomas Zimmermann > Cc: devicetree@vger.kernel.org > Cc: dri-devel@lists.freedesktop.org > Cc: linux-renesas-soc@vger.kernel.org > --- > See https://gitlab.freedesktop.org/imagination/linux-firmware/-/issues/= 13 > for related userspace bits. > --- > .../devicetree/bindings/gpu/img,powervr-rogue.yaml | 6 ++++++= > 1 file changed, 6 insertions(+) >=20 > diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.ya= ml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml > index c87d7bece0ecd..c9680a2560114 100644 > --- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml > +++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml > @@ -13,6 +13,12 @@ maintainers: > properties: > compatible: > oneOf: > + - items: > + - enum: > + - renesas,r8a77960-gpu > + - renesas,r8a77961-gpu I think this can just be renesas,r8a7796-gpu; most of the devices in the dts for these SoCs appear to use the same pattern and the GPU is the same in both. > + - const: img,img-gx6250 > + - const: img,img-rogue > - items: > - enum: > - ti,am62-gpu You also need to add img,img-gx6250 to the appropriate conditional blocks below here for the number of power domains (in this case, 2) and clocks (that's more complicated). These older GPUs always require three clocks (core, mem and sys), but it's not immediately clear from the Renesas TRM how these are hooked up. I can see three "clocks" connected (fig 23.2 in my copy, clock details from fig 8.1b): - Clock ZG=CF=86: Appears to be a core clock for the GPU (3DGE). That wo= uld make it our "core" clock. - Clock S2D1=CF=86: Appears to be a core clock used on the AXI bus, maki= ng it our "sys" clock. - MSTP ST112: Appears to be a whole module on/off control of some description, and definitely doesn't align with the missing "mem" clock. Do you have any further insights as to how Renesas have wired things up? Cheers, Matt --=20 Matt Coster E: matt.coster@imgtec.com --------------6rtDB2wNy0caBsrxCddQMIAB-- --------------5rFe2qUFCF0pM3etUtp570qC Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature.asc" -----BEGIN PGP SIGNATURE----- wnsEABYIACMWIQS4qDmoJvwmKhjY+nN5vBnz2d5qsAUCaO45jAUDAAAAAAAKCRB5vBnz2d5qsC4q APwJTf4+jtwxhaTTxCQB+Qk/dG8hDRuW57kEv60kyD1YwgEA0Ro6f5cxQTm6d9MyafBV1Ej3qsLv rQocsc8+v4rJ7wA= =hlfE -----END PGP SIGNATURE----- --------------5rFe2qUFCF0pM3etUtp570qC--