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starfive: visionfive2: add CMA entry into board DTS

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This entry is present in the SDK kernel and is poked by the bootloader.

Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>
This commit is contained in:
Zoltan HERPAI 2025-06-02 22:06:24 +00:00
parent 39423810c1
commit 8bb5d19acd
1 changed files with 31 additions and 0 deletions
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31
target/linux/starfive/patches-6.12/1025-riscv-dts-starfive-visionfive2-add-dma-pool-entry.patch Normal file
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@ -0,0 +1,31 @@
From 928a660ec1124853d2dae074e74ec7b20fe9bac2 Mon Sep 17 00:00:00 2001
From: Zoltan HERPAI <wigyori@uid0.hu>
Date: Sun, 1 Jun 2025 16:02:38 +0000
Subject: [PATCH] riscv: dts: starfive: visionfive2: add dma pool entry
In the VF2 SDK there is a reserved memory for a shared dma pool, which is
also updated by the SDK bootloader. Add this node here as well.
Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>
---
.../boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
+++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
@@ -25,6 +25,15 @@
e24_mem: e24@c0000000 {
reg = <0x0 0x6ce00000 0x0 0x1600000>;
};
+
+ linux,cma {
+ compatible = "shared-dma-pool";
+ reusable;
+ size = <0x0 0x20000000>;
+ alignment = <0x0 0x1000>;
+ alloc-ranges = <0x0 0x70000000 0x0 0x20000000>;
+ linux,cma-default;
+ };
};
leds {