The i.MX8M Nano supports and overdrive mode if the SoC is given
the proper voltage. Add imx8mn-overdrive.dtsi file which can
be included by boards who support the voltage necessary to handle
the faster clocks. This increases the GPU clocks from 400MHz to
600MHz.
Signed-off-by: Adam Ford <aford173@xxxxxxxxx>
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-overdrive.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-overdrive.dtsi
new file mode 100644
index 000000000000..5d03fb893e90
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mn-overdrive.dtsi
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+&gpu {
+ assigned-clocks = <&clk IMX8MN_CLK_GPU_CORE>,
+ <&clk IMX8MN_CLK_GPU_SHADER>,
+ <&clk IMX8MN_CLK_GPU_AXI>,
+ <&clk IMX8MN_CLK_GPU_AHB>,
+ <&clk IMX8MN_GPU_PLL>;
+ assigned-clock-parents = <&clk IMX8MN_GPU_PLL_OUT>,
+ <&clk IMX8MN_GPU_PLL_OUT>,
+ <&clk IMX8MN_SYS_PLL1_800M>,
+ <&clk IMX8MN_SYS_PLL1_800M>;
+ assigned-clock-rates = <600000000>,
+ <600000000>,
+ <800000000>,
+ <400000000>,
+ <1200000000>;
+};
--
2.40.1
