diff mbox series

[v4,12/13] arm64: dts: imx8q: add linux,cma node for imx8qm-mek and imx8qxp-mek

Message ID 20250408-8qxp_camera-v4-12-ef695f1b47c4@nxp.com
State New
Headers show
Series media: imx8: add camera support | expand

Commit Message

Frank Li April 8, 2025, 9:53 p.m. UTC 
Add linux,cma node because some devices, such as camera, need big continue
physical memory.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
change from v1 to v3
- none
---
 arch/arm64/boot/dts/freescale/imx8qm-mek.dts  | 9 +++++++++
 arch/arm64/boot/dts/freescale/imx8qxp-mek.dts | 8 ++++++++
 2 files changed, 17 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/freescale/imx8qm-mek.dts b/arch/arm64/boot/dts/freescale/imx8qm-mek.dts
index 353f825a8ac5d..68442c8575f3f 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm-mek.dts
+++ b/arch/arm64/boot/dts/freescale/imx8qm-mek.dts
@@ -113,6 +113,15 @@  dsp_vdev0buffer: memory@94300000 {
 			reg = <0 0x94300000 0 0x100000>;
 			no-map;
 		};
+
+		/* global autoconfigured region for contiguous allocations */
+		linux,cma {
+			compatible = "shared-dma-pool";
+			alloc-ranges = <0 0xc0000000 0 0x3c000000>;
+			size = <0 0x3c000000>;
+			linux,cma-default;
+			reusable;
+		};
 	};
 
 	lvds_backlight0: backlight-lvds0 {
diff --git a/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts b/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
index a669a5d500d32..a378f462a283b 100644
--- a/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
+++ b/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
@@ -56,6 +56,14 @@  dsp_vdev0buffer: memory@94300000 {
 			reg = <0 0x94300000 0 0x100000>;
 			no-map;
 		};
+
+		linux,cma {
+			compatible = "shared-dma-pool";
+			alloc-ranges = <0 0xc0000000 0 0x3c000000>;
+			size = <0 0x3c000000>;
+			linux,cma-default;
+			reusable;
+		};
 	};
 
 	reg_usdhc2_vmmc: usdhc2-vmmc {