Re: [PATCH] arm64: dts: qcom: glymur-asus-zenbook: Drop the CMA region

[Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>]

On 10/14/26 3:55 PM, Abel Vesa wrote:
> The linux,cma reserved-memory region was carried over from the X1E80100
> boards, where it is needed because the PCIe SMMU is reserved (owned by
> the hypervisor) and PCIe devices such as the WCN7850 WLAN end up doing
> DMA to physically contiguous memory.
> 
> On Glymur the PCIe SMMU is owned by Linux and the devices behind it are
> attached to translated IOMMU domains, so there is no need for a large
> contiguous DMA pool. Describing a CMA size in the DT is also more of a
> use-case policy than a hardware description. None of the other Glymur
> boards reserve one, so drop it from the two ASUS Zenbooks as well.
> 
> Assisted-by: LLM
> Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Tested-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> # Zenbook A16

Konrad