52 lines
1.6 KiB
Diff
52 lines
1.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Your Name <michael.franz@di-pas.de>
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Date: Mon, 21 Mar 2025 12:00:00 +0000
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Subject: [PATCH] Reclaim SRAM3 from OpenAMP for direct memory mapping
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This patch removes SRAM3 from the OpenAMP memory regions and creates a
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dedicated memory region for direct mapping through /dev/mem.
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Signed-off-by: Your Name <michael.franz@di-pas.de>
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---
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arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi | 19 +++----------------
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1 file changed, 3 insertions(+), 16 deletions(-)
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diff --git a/arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi b/arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi
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index xxxxxxx..yyyyyyy 100644
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--- a/arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi
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+++ b/arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi
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@@ -33,21 +33,9 @@
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no-map;
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};
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- vdev0vring0: vdev0vring0@10040000 {
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+ custom_shared_mem: custom_shared_mem@10040000 {
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compatible = "shared-dma-pool";
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- reg = <0x10040000 0x1000>;
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- no-map;
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- };
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-
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- vdev0vring1: vdev0vring1@10041000 {
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- compatible = "shared-dma-pool";
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- reg = <0x10041000 0x1000>;
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- no-map;
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- };
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-
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- vdev0buffer: vdev0buffer@10042000 {
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- compatible = "shared-dma-pool";
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- reg = <0x10042000 0x4000>;
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+ reg = <0x10040000 0x8000>;
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no-map;
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};
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@@ -532,8 +520,7 @@
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};
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&m4_rproc {
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- memory-region = <&retram>, <&mcuram>, <&mcuram2>, <&vdev0vring0>,
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- <&vdev0vring1>, <&vdev0buffer>, <&mcu_rsc_table>;
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+ memory-region = <&retram>, <&mcuram>, <&mcuram2>, <&mcu_rsc_table>;
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mboxes = <&ipcc 0>, <&ipcc 1>, <&ipcc 2>, <&ipcc 3>;
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mbox-names = "vq0", "vq1", "shutdown", "detach";
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interrupt-parent = <&exti>;
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