From 1f794d3eed5345413c2b0cf1bcccc92d77681220 Mon Sep 17 00:00:00 2001 From: Adam Ford Date: Tue, 28 Nov 2023 14:02:16 -0600 Subject: arm64: dts: imx8mm: Reduce GPU to nominal speed When the GPU nodes were added, the GPU_PLL_OUT was configured for 1000MHz, but this requires the SoC to run in overdrive mode which requires an elevated voltage operating point. Since this may run some boards out of spec, the default clock should be set to 800MHz for nominal operating mode. Boards that run at the higher voltage can update their clocks accordingly. Fixes: 4523be8e46be ("arm64: dts: imx8mm: Add GPU nodes for 2D and 3D core") Signed-off-by: Adam Ford Signed-off-by: Shawn Guo --- arch/arm64/boot/dts/freescale/imx8mm.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi index 74f60913ae4a..8a1b42b94dce 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi @@ -1404,7 +1404,7 @@ assigned-clocks = <&clk IMX8MM_CLK_GPU3D_CORE>, <&clk IMX8MM_GPU_PLL_OUT>; assigned-clock-parents = <&clk IMX8MM_GPU_PLL_OUT>; - assigned-clock-rates = <0>, <1000000000>; + assigned-clock-rates = <0>, <800000000>; power-domains = <&pgc_gpu>; }; @@ -1419,7 +1419,7 @@ assigned-clocks = <&clk IMX8MM_CLK_GPU2D_CORE>, <&clk IMX8MM_GPU_PLL_OUT>; assigned-clock-parents = <&clk IMX8MM_GPU_PLL_OUT>; - assigned-clock-rates = <0>, <1000000000>; + assigned-clock-rates = <0>, <800000000>; power-domains = <&pgc_gpu>; }; -- cgit