To support camera in i.MX7 the cma heap is used to allocate frame buffers. The
default size of CMA is 16MB which is not enough for higher resolutions (ex:
1600x1200).
So, increase the default CMA size to 40MB.
Signed-off-by: Rui Miguel Silva <rui.si...@linaro.org>
---
arch/arm/boot/dts/imx7s.dtsi | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
index 4d42335c0dee..142ea709d296 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -182,6 +182,20 @@
<GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) |
IRQ_TYPE_LEVEL_LOW)>;
};
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ /* global autoconfigured region for contiguous allocations */
+ linux,cma {
+ compatible = "shared-dma-pool";
+ reusable;
+ size = <0x2800000>;
+ linux,cma-default;
+ };
+ };
+
soc {
#address-cells = <1>;
#size-cells = <1>;
--
2.17.0
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