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boundary="------------uNH0PIMu3PbikIDBZOzmuitr"; protected-headers="v1" From: Matt Coster To: Ulf Hansson , Michal Wilczynski Cc: Drew Fustini , 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 , Marek Szyprowski , 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: Subject: Re: [PATCH v3 7/8] riscv: dts: thead: th1520: Add IMG BXM-4-64 GPU node References: <20250530-apr_14_for_sending-v3-0-83d5744d997c@samsung.com> <20250530-apr_14_for_sending-v3-7-83d5744d997c@samsung.com> In-Reply-To: --------------uNH0PIMu3PbikIDBZOzmuitr Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 03/06/2025 13:27, Ulf Hansson wrote: > On Fri, 30 May 2025 at 00:24, 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 f= or >> the GPU using the drm/imagination driver. >> >> 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. >> >> Add fixed clock gpu_mem_clk, as the MEM clock on the T-HEAD SoC can't = be >> controlled programatically. >> >> Signed-off-by: Michal Wilczynski >> --- >> arch/riscv/boot/dts/thead/th1520.dtsi | 22 ++++++++++++++++++++++ >> 1 file changed, 22 insertions(+) >> >> diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/d= ts/thead/th1520.dtsi >> index 6170eec79e919b606a2046ac8f52db07e47ef441..ee937bbdb7c08439a70306= f035b1cc82ddb4bae2 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>; >> }; >> >> + 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>; >> @@ -504,6 +511,21 @@ clk: clock-controller@ffef010000 { >> #clock-cells =3D <1>; >> }; >> >> + gpu: gpu@ffef400000 { >> + compatible =3D "thead,th1520-gpu", "img,img-bx= m-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>; >> + power-domain-names =3D "a"; >=20 > If the power-domain-names are really needed, please pick a > useful/descriptive name. This isn't the first time our unfortunate power domain names have come up [1][2]. Sadly, we're stuck with them for Rogue. Matt [1]: https://lore.kernel.org/r/ff4e96e4-ebc2-4c50-9715-82ba3d7b8612@imgte= c.com/ [2]: https://lore.kernel.org/r/cc6a19b3-ba35-465c-9fa6-a764df7c01c1@imgte= c.com/ >=20 > [...] >=20 > Kind regards > Uffe --=20 Matt Coster E: matt.coster@imgtec.com --------------uNH0PIMu3PbikIDBZOzmuitr-- --------------exTRLs9Cek9O8APVswKEMWcT 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+nN5vBnz2d5qsAUCaEB4uAUDAAAAAAAKCRB5vBnz2d5qsGV3 AQC/7N/zmcYvgZrABEuCu3uACvSLqpDrSEIs2JyCNo6s9wD/WKK5Mts6A0DGwlzdbLq4m26L3u/0 iOYcPioWwhyQ+Q4= =M/Kr -----END PGP SIGNATURE----- --------------exTRLs9Cek9O8APVswKEMWcT--