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boundary="------------uWXKNEBIdGhyn3rBwTlt6nrN"; protected-headers="v1" From: Matt Coster To: Michal Wilczynski Cc: Guo Ren , Fu Wei , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bartosz Golaszewski , Philipp Zabel , Frank Binns , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Ulf Hansson , Marek Szyprowski , Drew Fustini , Bartosz Golaszewski , linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, dri-devel@lists.freedesktop.org Message-ID: <140f5acf-cc58-4e48-a512-df6cd1654594@imgtec.com> Subject: Re: [PATCH v12 3/4] riscv: dts: thead: th1520: Add IMG BXM-4-64 GPU node References: <20250820-apr_14_for_sending-v12-0-4213ccefbd05@samsung.com> <20250820-apr_14_for_sending-v12-3-4213ccefbd05@samsung.com> In-Reply-To: <20250820-apr_14_for_sending-v12-3-4213ccefbd05@samsung.com> --------------uWXKNEBIdGhyn3rBwTlt6nrN Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 20/08/2025 09:55, Michal Wilczynski wrote: > Add a device tree node for the IMG BXM-4-64 GPU present in the T-HEAD > TH1520 SoC used by the Lichee Pi 4A board. This node enables support fo= r > the GPU using the drm/imagination driver. >=20 > By adding this node, the kernel can recognize and initialize the GPU, > providing graphics acceleration capabilities on the Lichee Pi 4A and > other boards based on the TH1520 SoC. >=20 > Add fixed clock gpu_mem_clk, as the MEM clock on the T-HEAD SoC can't b= e > controlled programatically. >=20 > Reviewed-by: Ulf Hansson > Reviewed-by: Drew Fustini > Reviewed-by: Bartosz Golaszewski > Signed-off-by: Michal Wilczynski I still don't really know if I should be Rb-ing DTS changes, so: Acked-by: Matt Coster Cheers, Matt > --- > arch/riscv/boot/dts/thead/th1520.dtsi | 21 +++++++++++++++++++++ > 1 file changed, 21 insertions(+) >=20 > diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dt= s/thead/th1520.dtsi > index 42724bf7e90e08fac326c464d0f080e3bd2cd59b..6ae5c632205ba63248c0a11= 9c03bdfc084aac7a0 100644 > --- a/arch/riscv/boot/dts/thead/th1520.dtsi > +++ b/arch/riscv/boot/dts/thead/th1520.dtsi > @@ -225,6 +225,13 @@ aonsys_clk: clock-73728000 { > #clock-cells =3D <0>; > }; > =20 > + gpu_mem_clk: mem-clk { > + compatible =3D "fixed-clock"; > + clock-frequency =3D <0>; > + clock-output-names =3D "gpu_mem_clk"; > + #clock-cells =3D <0>; > + }; > + > stmmac_axi_config: stmmac-axi-config { > snps,wr_osr_lmt =3D <15>; > snps,rd_osr_lmt =3D <15>; > @@ -500,6 +507,20 @@ clk: clock-controller@ffef010000 { > #clock-cells =3D <1>; > }; > =20 > + gpu: gpu@ffef400000 { > + compatible =3D "thead,th1520-gpu", "img,img-bxm-4-64", > + "img,img-rogue"; > + reg =3D <0xff 0xef400000 0x0 0x100000>; > + interrupt-parent =3D <&plic>; > + interrupts =3D <102 IRQ_TYPE_LEVEL_HIGH>; > + clocks =3D <&clk_vo CLK_GPU_CORE>, > + <&gpu_mem_clk>, > + <&clk_vo CLK_GPU_CFG_ACLK>; > + clock-names =3D "core", "mem", "sys"; > + power-domains =3D <&aon TH1520_GPU_PD>; > + resets =3D <&rst TH1520_RESET_ID_GPU>; > + }; > + > rst: reset-controller@ffef528000 { > compatible =3D "thead,th1520-reset"; > reg =3D <0xff 0xef528000 0x0 0x4f>; >=20 --=20 Matt Coster E: matt.coster@imgtec.com --------------uWXKNEBIdGhyn3rBwTlt6nrN-- --------------Nm7mlWgDen4jAQGzGQ9CQLSW 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+nN5vBnz2d5qsAUCaKbhNwUDAAAAAAAKCRB5vBnz2d5qsOeR AQCRcjM9RYclbacLnp/u83N/Bmx3MOLJPu//aUAlhiBmAgD/UfediiYOnznxOWkrZ1pOxF/CCiiG cAGZQUyOP9thTQw= =uqlj -----END PGP SIGNATURE----- --------------Nm7mlWgDen4jAQGzGQ9CQLSW--