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Mon, 29 Sep 2025 09:57:46 +0000 Received: from AS4PR04MB9624.eurprd04.prod.outlook.com ([fe80::fa4e:dc6f:3f71:13b7]) by AS4PR04MB9624.eurprd04.prod.outlook.com ([fe80::fa4e:dc6f:3f71:13b7%4]) with mapi id 15.20.9160.013; Mon, 29 Sep 2025 09:57:46 +0000 Date: Mon, 29 Sep 2025 17:57:47 +0800 From: Rain Yang To: Marek Vasut Cc: Frank.Li@nxp.com, airlied@gmail.com, alexander.stein@ew.tq-group.com, boris.brezillon@collabora.com, conor+dt@kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, festevam@gmail.com, imx@lists.linux.dev, jiyu.yang@oss.nxp.com, kernel@pengutronix.de, krzk+dt@kernel.org, linux-arm-kernel@lists.infradead.org, liviu.dudau@arm.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, p.zabel@pengutronix.de, robh@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org, simona@ffwll.ch, sre@kernel.org, steven.price@arm.com, tzimmermann@suse.de, xianzhong.li@nxp.com Subject: Re: [PATCH v3 2/2] arm64: dts: imx95: Describe Mali G310 GPU Message-ID: References: <20250925203938.169880-1-marek.vasut@mailbox.org> <20250925203938.169880-2-marek.vasut@mailbox.org> <20250926055701.GC8204@nxa18884-linux.ap.freescale.net> <8f4ed393-f94a-4abb-9cdd-60dd693f3ec6@mailbox.org> Content-Type: text/plain; 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Include dummy GPU voltage regulator and OPP tables. >> > >> > >> > + gpu: gpu@4d900000 { >> > + compatible = "nxp,imx95-mali", "arm,mali-valhall-csf"; >> > + reg = <0 0x4d900000 0 0x480000>; >> > + clocks = <&scmi_clk IMX95_CLK_GPU>, <&scmi_clk IMX95_CLK_GPUAPB>; >> > + clock-names = "core", "coregroup"; >> > + interrupts = , >> > + , >> > + ; >> > + interrupt-names = "job", "mmu", "gpu"; >> > + mali-supply = <&gpu_fixed_reg>; >> > + operating-points-v2 = <&gpu_opp_table>; >> > + power-domains = <&scmi_devpd IMX95_PD_GPU>; >> > + #cooling-cells = <2>; >> > + dynamic-power-coefficient = <1013>; >> >> Sorry for my ignorance, would you please share how to get the value? >Copy-pasted from NXP downstream kernel fork DT bindings, see: > >https://github.com/nxp-imx/linux-imx.git > >11495de7c24a ("MGS-7621-4 dts: gpu: update devfreq para") Hi Marek, 1. this "mali: gpu@4d900000" label can be found in this commit you showed. please correct this to be compatible with the downstream and upstream kernel 2. the compatible string is different from our downstream kernel, also you dropped the "nxp,imx95-mali" compatible patch in the panthor driver, why? this will impact the mali property driver too, which has already been used in many customer project. 3. the number of frequency in opp-table is only one, but there are two clocks in clocks property, this really make people confused. CLK/CLK_COREGROUP/CLK_STACK in i.MX95 are from the same source <&scmi_clk IMX95_CLK_GPU>, the other clock <&scmi_clk IMX95_CLK_GPUAPB> is always-on APB clock, which can't be changed by A-cores, and has been removed from clocks property in the latest release.