[PATCH linux dev-5.4 4/4] ARM: dts: Aspeed: Witherspoon: Add reserved memory for XDMA

Eddie James eajames at linux.ibm.com
Fri Mar 27 07:14:03 AEDT 2020


Use a no-map reserved memory node for use by the XDMA engine.

Signed-off-by: Eddie James <eajames at linux.ibm.com>
---
 arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts b/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts
index da9e379..ce445fe 100644
--- a/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts
@@ -27,6 +27,11 @@
 			reg = <0x98000000 0x04000000>; /* 64M */
 		};
 
+		vga_memory: region at 9f000000 {
+			no-map;
+			reg = <0x9f000000 0x01000000>; /* 16M */
+		};
+
 		gfx_memory: framebuffer {
 			size = <0x01000000>;
 			alignment = <0x01000000>;
@@ -746,8 +751,7 @@
 
 &xdma {
 	status = "okay";
-	/* 512M DRAM with 16M VRAM which is reserved at the top. */
-	memory = <0x9f000000 0x01000000>;
+	memory-region = <&vga_memory>;
 };
 
 #include "ibm-power9-dual.dtsi"
-- 
1.8.3.1



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