[PATCH v1 03/18] arm64: dts: imx8mq-evk: add reserve memory node for CMA region

Benjamin Gaignard
2021-02-17T08:05:27Z

Define allocation range for the default CMA region.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com>
---
arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 15 +++++++++++++++
1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
index 85b045253a0e..047dfd4a1ffd 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
@@ -21,6 +21,21 @@ memory@40000000 {
reg = <0x00000000 0x40000000 0 0xc0000000>;
};

+ resmem: reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ /* global autoconfigured region for contiguous allocations */
+ linux,cma {
+ compatible = "shared-dma-pool";
+ reusable;
+ size = <0 0x3c000000>;
+ alloc-ranges = <0 0x40000000 0 0x40000000>;
+ linux,cma-default;
+ };
+ };
+
pcie0_refclk: pcie0-refclk {
compatible = "fixed-clock";
#clock-cells = <0>;
--
2.25.1