On 2/27/25 10:27 PM, Frank Li wrote:
[...]
+ gpu: gpu@4d900000 {
+ compatible = "fsl,imx95-mali", "arm,mali-valhall-csf";
+ reg = <0 0x4d900000 0 0x480000>;
+ clocks = <&scmi_clk IMX95_CLK_GPU>;
+ clock-names = "core";
+ interrupts = <GIC_SPI 288 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 289 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 290 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "gpu", "job", "mmu";
+ mali-supply = <&gpu_fixed_reg>;
+ operating-points-v2 = <&gpu_opp_table>;
+ power-domains = <&scmi_devpd IMX95_PD_GPU>, <&scmi_perf IMX95_PERF_GPU>;
+ power-domain-names = "mix", "perf";
+ resets = <&gpu_blk_ctrl 0>;
+ #cooling-cells = <2>;
+ dynamic-power-coefficient = <1013>;
+ status = "disabled";
GPU is internal module, which have not much dependence with other module
such as pinmux. why not default status is "disabled". Supposed gpu driver
will turn off clock and power if not used.
My thinking was that there are MX95 SoC with GPU fused off, hence it is
better to keep the GPU disabled in DT by default. But I can also keep it
enabled and the few boards which do not have MX95 SoC with GPU can
explicitly disable it in board DT.
What do you think ?
GPU Fuse off should use access-control, see thread
https://lore.kernel.org/imx/20250207120213.GD14860@localhost.localdomain/
Did that thread ever go anywhere ? It seems there is no real conclusion,
is there ? +Cc Alex .
