From: Michal Wilczynski <m.wilczynski@samsung.com>
Date: Wed, 28 Aug 2024 08:17:35 +0000 (+0200)
Subject: riscv: dts: spacemit: Add reserved memory for dpu
X-Git-Tag: accepted/tizen/unified/x/20240911.015644~10
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0d8501e25a7f8f3cf12f2d1e65d7641a606236a2;p=platform%2Fkernel%2Flinux-riscv.git

riscv: dts: spacemit: Add reserved memory for dpu

The hdmi nodes are dependent on memory ranges for the dpu. Port them
from the vendor kernel [1].

[1] - https://github.com/BPI-SINOVOIP/pi-linux.git

Change-Id: I8e1e80c1ef3490f08aa56a5522de6d73d9560091
Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com>
---

diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
index d642b8a85011..d1a54d28bc52 100644
--- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
@@ -10,6 +10,42 @@
 	model = "Banana Pi BPI-F3";
 	compatible = "bananapi,bpi-f3", "spacemit,k1";
 
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x00000000 0x0 0x80000000>;
+	};
+
+	memory@100000000 {
+		device_type = "memory";
+		reg = <0x1 0x00000000 0x0 0x80000000>;
+	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		linux,cma {
+			compatible = "shared-dma-pool";
+			/* alloc memory from 0x40000000~0x80000000 */
+			alloc-ranges = <0 0x40000000 0 0x40000000>;
+			/* size of cma buffer is 384MByte */
+			size = <0 0x18000000>;
+			/* start address is 1Mbyte aligned */
+			alignment = <0x0 0x100000>;
+			linux,cma-default;
+			/* besides hardware, dma for ex. buffer can be used by memory management */
+			reusable;
+		};
+
+		/* reserved 384K for dpu, including mmu table(256K) and cmdlist(128K) */
+		dpu_resv: dpu_reserved@2ff40000 {
+			compatible = "shared-dma-pool";
+			reg = <0x0 0x2ff40000 0x0 0x000C0000>;
+			no-map;
+		};
+	};
+
 	chosen {
 		stdout-path = "serial0";
 	};