[08/15] ARM: dts: increase default cma size to 40MB

Message ID 20180419101812.30688-9-rui.silva@linaro.org
State New
Headers show
Series
  • Untitled series #10799
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Commit Message

Rui Miguel Silva April 19, 2018, 10:18 a.m.
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.silva@linaro.org>

---
 arch/arm/boot/dts/imx7s.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

-- 
2.17.0

Patch

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>;