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boundary="------------0KTB182XE31koXP3ny3KHuyR"; 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 2/3] arm64: dts: renesas: r8a77960: Add GX6250 GPU node References: <20251013190210.142436-1-marek.vasut+renesas@mailbox.org> <20251013190210.142436-2-marek.vasut+renesas@mailbox.org> In-Reply-To: <20251013190210.142436-2-marek.vasut+renesas@mailbox.org> --------------0KTB182XE31koXP3ny3KHuyR Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 13/10/2025 20:01, Marek Vasut wrote: > Describe Imagination Technologies PowerVR Rogue GX6250 BNVC 4.45.2.58 > present in Renesas R-Car R8A77960 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 > --- > arch/arm64/boot/dts/renesas/r8a77960.dtsi | 12 ++++++++++++ > 1 file changed, 12 insertions(+) >=20 > diff --git a/arch/arm64/boot/dts/renesas/r8a77960.dtsi b/arch/arm64/boo= t/dts/renesas/r8a77960.dtsi > index 6d039019905de..4f7b2e838c026 100644 > --- a/arch/arm64/boot/dts/renesas/r8a77960.dtsi > +++ b/arch/arm64/boot/dts/renesas/r8a77960.dtsi > @@ -2565,6 +2565,18 @@ gic: interrupt-controller@f1010000 { > resets =3D <&cpg 408>; > }; > =20 > + gpu: gpu@fd000000 { > + compatible =3D "renesas,r8a77960-gpu", > + "img,img-gx6250", > + "img,img-rogue"; > + reg =3D <0 0xfd000000 0 0x40000>; > + interrupts =3D ; > + clocks =3D <&cpg CPG_MOD 112>; > + clock-names =3D "core"; > + power-domains =3D <&sysc R8A7796_PD_3DG_B>; My comments here apply to the other dts patch (P3/3) as well since the integration appears to be identical between the two SoCs. There are two power domains on this GPU and the SoC exposes both of them; no reason to fall back to the single-domain scheme here. I know the sysc driver declares the dependency of _B on _A, but the dts shouldn't rely on that, so can we have: power-domains =3D <&sysc R8A7796_PD_3DG_A>, <&sysc R8A7796_PD_3DG_B>; power-domain-names =3D "a", "b"; > + resets =3D <&cpg 112>; Is this a reset line? Is it a clock? I see this pattern used throughout the Renesas dts, but I'm just thinking how this will interact with the powervr driver. The reset line is optional since some hardware integrations manage it for us during the power-up/down sequences, which appears to be the case here with the MSTP control (from my brief dig through the Renesas TRM). Related, see my comments on the bindings patch (P1/3) about how clocks are wired up in this SoC. Cheers, Matt > + }; > + > pciec0: pcie@fe000000 { > compatible =3D "renesas,pcie-r8a7796", > "renesas,pcie-rcar-gen3"; --=20 Matt Coster E: matt.coster@imgtec.com --------------0KTB182XE31koXP3ny3KHuyR-- --------------RTOkVgZiVDEI6JGIP7yqqGXE 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+nN5vBnz2d5qsAUCaO45kQUDAAAAAAAKCRB5vBnz2d5qsGIA AP4yZG2Lx9KJbPgW/h3huYxk3vuJ6yf+3yOAd1Mv5gSO3QD/RzzCbJ6cS2vUGnzDuden8qz/E1T4 7plXlDC7EWe7GQ0= =AsP1 -----END PGP SIGNATURE----- --------------RTOkVgZiVDEI6JGIP7yqqGXE--