arm64: dts: freescale: imx8qm: add reserve memory for rpmsg

RPMSG needs to share memory with M4, and SCD needs to set
this shared memory property accordingly, so the memory
region needs to be fixed.

Here make CMA range same as its size, so that SCD only sets
this region as share property. And also reserve another
4MB for RPMSG.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

diff --git a/arch/arm64/boot/dts/freescale/fsl-imx8qm.dtsi b/arch/arm64/boot/dts/freescale/fsl-imx8qm.dtsi
index 5482506..ea5cc92 100644 (file)
--- a/arch/arm64/boot/dts/freescale/fsl-imx8qm.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-imx8qm.dtsi
@@ -73,9 +73,14 @@
                        compatible = "shared-dma-pool";
                        reusable;
                        size = <0 0x28000000>;
-                       alloc-ranges = <0 0x80000000 0 0x80000000>;
+                       alloc-ranges = <0 0x90000000 0 0x28000000>;
                        linux,cma-default;
                };
+
+               rpmsg_reserved: rpmsg@0xb8000000 {
+                       no-map;
+                       reg = <0 0xb8000000 0 0x400000>;
+               };
        };
 
        gic: interrupt-controller@51a00000 {

diff --git a/arch/arm64/boot/dts/freescale/fsl-imx8qxp.dtsi b/arch/arm64/boot/dts/freescale/fsl-imx8qxp.dtsi
index 787c229..92fd61b 100644 (file)
--- a/arch/arm64/boot/dts/freescale/fsl-imx8qxp.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-imx8qxp.dtsi
@@ -68,9 +68,14 @@
                        compatible = "shared-dma-pool";
                        reusable;
                        size = <0 0x28000000>;
-                       alloc-ranges = <0 0x80000000 0 0x80000000>;
+                       alloc-ranges = <0 0x90000000 0 0x28000000>;
                        linux,cma-default;
                };
+
+               rpmsg_reserved: rpmsg@0xb8000000 {
+                       no-map;
+                       reg = <0 0xb8000000 0 0x400000>;
+               };
        };
 
        gic: interrupt-controller@51a00000 {