Hi,
On Tue, Nov 07, 2017 at 11:03:30AM +0100, Giulio Benetti wrote:
> This patch adds device tree mali node compatible with r6p2 utgard kernel
> driver
> provided by ARM and patched by maxime ripard on his github.
>
> It can be easily used in target.dts with:
>
> &mali {
> status = "okay";
> }
>
> then loading mali.ko in user space.
>
> Best regards
> Giulio Benetti
> Micronova srl
Again, you should have a proper commit log here.
Moreover, the DT binding itself doesn't have a dependency on the mali
driver version. This is just a description of the hardware so you
shouldn't mention it.
And there's no need for the status = "okay" in the board DTS, since
you don't disable it in your patch.
> Signed-off-by: Giulio Benetti <giulio.bene...@micronovasrl.com>
> ---
> arch/arm/boot/dts/sun7i-a20.dtsi | 27 +++++++++++++++++++++++++++
> 1 file changed, 27 insertions(+)
>
> diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi
> b/arch/arm/boot/dts/sun7i-a20.dtsi
> index 228c368..e402596 100644
> --- a/arch/arm/boot/dts/sun7i-a20.dtsi
> +++ b/arch/arm/boot/dts/sun7i-a20.dtsi
> @@ -1216,6 +1216,33 @@
> #size-cells = <0>;
> };
>
> + mali: gpu@1c40000 {
> + compatible = "allwinner,sun8i-a23-mali",
This doesn't make any sense. The A23 went out later, and...
> + "allwinner,sun7i-a20-mali", "arm,mali-400";
You're actually using the proper compatible already.
> + reg = <0x01c40000 0x10000>;
> + interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "gp",
> + "gpmmu",
> + "pp0",
> + "ppmmu0",
> + "pp1",
> + "ppmmu1",
> + "pmu";
> + clocks = <&ccu CLK_AHB_GPU>, <&ccu CLK_GPU>;
> + clock-names = "bus", "core";
> + resets = <&ccu RST_GPU>;
> + #cooling-cells = <2>;
This isn't needed unless you're using thermal throttling, but in this
case you would also need to add the OPPs.
> +
> + assigned-clocks = <&ccu CLK_GPU>;
> + assigned-clock-rates = <381000000>;
And this should be in the driver instead.
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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