On 17.01.2023 19:46, Bjorn Andersson wrote:
> While booting the CRD, a series of CMA allocation errors can be seen in
> the kernel log:
>
> cma: cma_alloc: reserved: alloc failed, req-size: 128 pages, ret: -12
>
> Growing the CMA region and querying /proc/meminfo indicates that a newly
> booted system (currently) uses 64MB CMA.
>
> Define a memory region sufficiently large for the current use cases, to
> avoid forcing users to add this themselves, through command line
> parameters etc.
>
> While fixing the CRD define the same region for the X13s.
>
> Tested-by: Andrew Halaney <ahalaney@xxxxxxxxxx> # sc8280xp-lenovo-thinkpad-x13s
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
> Signed-off-by: Bjorn Andersson <quic_bjorande@xxxxxxxxxxx>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Konrad
>
> Changes since v1:
> - Updated commit message
>
> arch/arm64/boot/dts/qcom/sc8280xp-crd.dts | 9 +++++++++
> .../boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts | 9 +++++++++
> 2 files changed, 18 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
> index 4e92dc28e2ce..6f686377dc3e 100644
> --- a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
> +++ b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
> @@ -128,6 +128,15 @@ vreg_wwan: regulator-wwan {
>
> regulator-boot-on;
> };
> +
> + reserved-memory {
> + linux,cma {
> + compatible = "shared-dma-pool";
> + size = <0x0 0x8000000>;
> + reusable;
> + linux,cma-default;
> + };
> + };
> };
>
> &apps_rsc {
> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> index 55ecbee19a58..8d485e0000cf 100644
> --- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> +++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> @@ -153,6 +153,15 @@ vreg_wwan: regulator-wwan {
> regulator-boot-on;
> };
>
> + reserved-memory {
> + linux,cma {
> + compatible = "shared-dma-pool";
> + size = <0x0 0x8000000>;
> + reusable;
> + linux,cma-default;
> + };
> + };
> +
> thermal-zones {
> skin-temp-thermal {
> polling-delay-passive = <250>;
