Il 23/02/23 03:43, Chen-Yu Tsai ha scritto:
On Wed, Feb 22, 2023 at 5:13 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@xxxxxxxxxxxxx> wrote:
Il 22/02/23 09:37, Chen-Yu Tsai ha scritto:
On Tue, Feb 21, 2023 at 11:37 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@xxxxxxxxxxxxx> wrote:
Get GPU support on MT8186 by adding its compatible.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml b/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
index be18b161959b..43a841d4e94d 100644
--- a/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
+++ b/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
@@ -15,6 +15,11 @@ properties:
compatible:
oneOf:
+ - items:
+ - enum:
+ - mediatek,mt8186-mali
+ - const: mediatek,mt8183b-mali
+ - const: arm,mali-bifrost # Mali Bifrost GPU model/revision is fully discoverable
The MT8186 has Mali-G52 MC2 2EE, while the MT8183 has Mali-G72 MP3.
Keeping in mind the obvious - which is that G52 and G72 are both Bifrost....
So we actually need a new entry with two power domains.
...This is my node for MT8186:
gpu: gpu@13040000 {
compatible = "mediatek,mt8186-mali",
"mediatek,mt8183b-mali",
"arm,mali-bifrost";
reg = <0 0x13040000 0 0x4000>;
clocks = <&mfgsys CLK_MFG_BG3D>;
interrupts = <GIC_SPI 276 IRQ_TYPE_LEVEL_HIGH 0>,
<GIC_SPI 275 IRQ_TYPE_LEVEL_HIGH 0>,
<GIC_SPI 274 IRQ_TYPE_LEVEL_HIGH 0>;
interrupt-names = "job", "mmu", "gpu";
power-domains = <&spm MT8186_POWER_DOMAIN_MFG1>,
<&spm MT8186_POWER_DOMAIN_MFG2>,
<&spm MT8186_POWER_DOMAIN_MFG3>;
power-domain-names = "core0", "core1", "core2";
/* Please ignore speedbin, that's for another time :-) */
nvmem-cells = <&gpu_volt_bin>;
nvmem-cell-names = "speed-bin";
#cooling-cells = <2>;
};
There are three MFG power domains... MFG2 and MFG3 are parents of MFG1, on that
I agree, but we can avoid adding a new entry just for MT8186 and use the MT8183-b
one while still being technically correct.
Besides, Mali G52 and Mali G72 are both Bifrost... so I don't think that this
commit is incorrect. For the sake of simplicity, I would push on getting this
one picked.
I'm aware. In case it wasn't obvious, Mali-G52 MC2 2EE has 2 cores, while
Mali-G72 MP3 has 3 cores. I think that is reason enough to do a new entry.
Otherwise you are describing power domains for 3 cores for a GPU that only
has two.
Unless there are any real-strong opinions against...
Yes.
Ok, I will do that for v3!
Cheers,
Angelo
ChenYu
