Re: [PATCH RFC 0/4] Devicetree support for Glymur GPU

Akhil P Oommen
2026-04-07T19:22:43Z

On 4/5/2026 2:33 AM, Akhil P Oommen wrote:
> This series adds the necessary Device Tree bits to enable GPU support
> on the Glymur-based CRD devices. The Adreno X2-85 GPU present in Glymur
> chipsets is based on the new Adreno A8x family of GPUs. It features a new
> slice architecture with 4 slices, significantly higher bandwidth
> throughput compared to mobile counterparts, raytracing support, and the
> highest GPU Fmax seen so far on an Adreno GPU (1850 Mhz), among other
> improvements.
>
> This series includes patches that add GPU SMMU, GPU/GMU support, and a
> patch to enable the GPU/GMU nodes on the CRD. Keen-eyed readers may
> notice that the secure firmware property is missing. This is
> intentional: The Glymur-based laptop platforms generally allow booting
> Linux at EL2 (yay!), which means the zap firmware not required here.
>
> The series is marked as RFC because an update is required in the
> gxclkctl/drm drivers to properly support the IFPC feature across all A8x
> GPUs. We plan to post a separate series shortly to address this. I prefer
> to merge the DT series after that series is acked, so that we retain the
> flexibility adjust the DT bindings if needed.

Taniya has posted it here:
https://lore.kernel.org/lkml/20260407-gfx-clk-fixes-v1-0-4bb5583a5054@oss.qualcomm.com/

-Akhil

>
> This series is only compile tested on linux-next. But I have cherry-picked
> and verified the functionality on a downstream tree which is pretty close
> to upstream. Also, there is a dtb-check error for the adreno smmu node. I
> will fix that in the next revision.
>
> Signed-off-by: Akhil P Oommen <akhilpo@oss.qualcomm.com>
> ---
> Akhil P Oommen (3):
> dt-bindings: display/msm: gpu: Document Adreno X2-185
> arm64: dts: qcom: Add GPU support for Glymur
> arm64: dts: qcom: Enable GPU & GMU on Glymur CRD
>
> Rajendra Nayak (1):
> arm64: dts: qcom: glymur: Add GPU smmu node
>
> .../devicetree/bindings/display/msm/gpu.yaml | 1 +
> arch/arm64/boot/dts/qcom/glymur-crd.dts | 8 +
> arch/arm64/boot/dts/qcom/glymur.dtsi | 234 +++++++++++++++++++++
> 3 files changed, 243 insertions(+)
> ---
> base-commit: 83acad05dee54a5cff0c98dd7962e55d4c6b145a
> change-id: 20260226-glymur-gpu-dt-339e5092606b
> prerequisite-message-id: <20260303-glymur_mmcc_dt_config_v2-v2-0-da9ded08c26f@oss.qualcomm.com>
> prerequisite-patch-id: a1fb5b7ee94995a24f6e96d1d2524e710d3a7e60
> prerequisite-patch-id: 56c830b7718129323b006e492aed9822d7c30079
>
> Best regards,