| Message ID | 20241223125553.3527812-13-m.wilczynski@samsung.com (mailing list archive) |
|---|---|
| State | Handled Elsewhere, archived |
| Headers | show |
| Series | Enable drm/imagination BXM-4-64 Support for LicheePi 4A | expand |
On 23/12/2024 13:55, Michal Wilczynski wrote: > Add a new SoC-specific compatible ("thead,th1520-gpu") for the T-HEAD > TH1520 GPU, alongside the Imagination BXM family compatible > ("img,img-bxm"). This documents the GPU integration on the T-HEAD > platform. > > Also adjust clock name constraints to accommodate a second clock named > "sys" instead of "mem" for T-HEAD. This is achieved by changing the > order, and making the 'sys' appear before 'mem'. > > Provide example of the new GPU node. > > Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com> > --- > .../bindings/gpu/img,powervr-rogue.yaml | 32 +++++++++++++++++-- > 1 file changed, 30 insertions(+), 2 deletions(-) > > diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml > index 4078cc816ea1..1eb1c15baec4 100644 > --- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml > +++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml > @@ -15,7 +15,10 @@ properties: > items: > - enum: > - ti,am62-gpu > - - const: img,img-axe # IMG AXE GPU model/revision is fully discoverable > + - thead,th1520-gpu > + - enum: > + - img,img-axe # IMG AXE GPU model/revision is fully discoverable > + - img,img-bxm This cannot be flexible. You now changed am62-gpu. Look how other bindings do it: oneOf with two lists. > > reg: > maxItems: 1 > @@ -27,8 +30,8 @@ properties: > clock-names: > items: > - const: core > - - const: mem > - const: sys > + - const: mem That's ABI break, so no. Widest constraints - min/maxItems - stay here. In allOf:if:then you specify the list of items. See: https://elixir.bootlin.com/linux/v6.11-rc6/source/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml#L127 You will need to adjust existing variants - list the items there. > minItems: 1 > Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml index 4078cc816ea1..1eb1c15baec4 100644 --- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml +++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml @@ -15,7 +15,10 @@ properties: items: - enum: - ti,am62-gpu - - const: img,img-axe # IMG AXE GPU model/revision is fully discoverable + - thead,th1520-gpu + - enum: + - img,img-axe # IMG AXE GPU model/revision is fully discoverable + - img,img-bxm reg: maxItems: 1 @@ -27,8 +30,8 @@ properties: clock-names: items: - const: core - - const: mem - const: sys + - const: mem minItems: 1 interrupts: @@ -62,6 +65,15 @@ allOf: properties: clocks: maxItems: 1 + - if: + properties: + compatible: + contains: + const: thead,th1520-gpu + then: + properties: + clocks: + maxItems: 2 examples: - | @@ -77,3 +89,19 @@ examples: interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>; power-domains = <&k3_pds 187 TI_SCI_PD_EXCLUSIVE>; }; + + #include <dt-bindings/reset/thead,th1520-reset.h> + #include <dt-bindings/clock/thead,th1520-clk-ap.h> + #include <dt-bindings/power/thead,th1520-power.h> + + gpu: gpu@fff0000 { + compatible = "thead,th1520-gpu", "img,img-bxm"; + reg = <0xfff0000 0x1000>; + interrupt-parent = <&plic>; + interrupts = <102 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clk CLK_GPU_CORE>, <&clk CLK_GPU_CFG_ACLK>; + clock-names = "core", "sys"; + power-domains = <&pd TH1520_AON_GPU_PD>; + resets = <&rst TH1520_RESET_ID_GPU>; + reset-names = "gpu"; + };
Add a new SoC-specific compatible ("thead,th1520-gpu") for the T-HEAD TH1520 GPU, alongside the Imagination BXM family compatible ("img,img-bxm"). This documents the GPU integration on the T-HEAD platform. Also adjust clock name constraints to accommodate a second clock named "sys" instead of "mem" for T-HEAD. This is achieved by changing the order, and making the 'sys' appear before 'mem'. Provide example of the new GPU node. Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com> --- .../bindings/gpu/img,powervr-rogue.yaml | 32 +++++++++++++++++-- 1 file changed, 30 insertions(+), 2 deletions(-)