arm64: dts: qcom: sc8280xp: Define CMA region for CRD and X13s

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@redhat.com> # sc8280xp-lenovo-thinkpad-x13s
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230117184630.2775905-1-quic_bjorande@quicinc.com

diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
index 4e92dc2..6f68637 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
+++ b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
@@ -128,6 +128,15 @@
 
                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 ecb7c1e..3f464b2 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
+++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
@@ -179,6 +179,15 @@
                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>;