Hi,
On Mon, Aug 27, 2018 at 8:11 AM Jordan Crouse <jcrouse@xxxxxxxxxxxxxx> wrote:
> + gpu@5000000 {
> + compatible = "qcom,adreno-630.2", "qcom,adreno";
> + #stream-id-cells = <16>;
> +
> + reg = <0x5000000 0x40000>;
> + reg-names = "kgsl_3d0_reg_memory";
> +
> + /*
> + * Look ma, no clocks! The GPU clocks and power are
> + * controlled entirely by the GMU
> + */
> +
> + interrupts = <0 300 0>;
> + interrupt-names = "kgsl_3d0_irq";
Drive-by feedback here. The "interrupts" above should be:
interrupts = <GIC_SPI 300 IRQ_TYPE_LEVEL_HIGH>;
* GIC_SPI is 0, but GIC_SPI is more documenting.
* having 0 for the final element means 'IRQ_TYPE_NONE'. On newer
kernels commit 6ef6386ef7c1 ("irqchip/gic-v3: Loudly complain about
the use of IRQ_TYPE_NONE") will cause loud yells if you do this. This
turns out to be a bit silly because (IIUC) the flags in the device
tree are totally ignored if the driver passes in flags itself [1].
...but I guess we should do it right. I believe the code requesting
this irq is a6xx_gmu_get_irq() which requests a level high interrupt,
so we should list level high here.
[1] https://lore.kernel.org/lkml/CAD=FV=XmiOh0Mg0f4a=W0NCH8eb--OQhP2jNAv2ZMpUBOn9n6Q@xxxxxxxxxxxxxx/T/#u
-Doug
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