mirror of
https://github.com/coolsnowwolf/lede.git
synced 2025-06-09 18:02:04 +08:00
52 lines
1.8 KiB
Diff
52 lines
1.8 KiB
Diff
From f15be3d4a0a55db2b50f319c378a2d16ceb21f86 Mon Sep 17 00:00:00 2001
|
|
From: Dmitry Osipenko <dmitry.osipenko@collabora.com>
|
|
Date: Mon, 17 Feb 2025 01:16:33 +0300
|
|
Subject: [PATCH] arm64: dts: rockchip: rk356x: Add MSI controller node
|
|
|
|
Rockchip 356x SoC's GIC has two hardware integration issues that
|
|
affect MSI functionality of the GIC. Previously, both these GIC
|
|
issues were worked around by using MBI for MSI instead of ITS
|
|
because kernel GIC driver didn't have necessary quirks.
|
|
|
|
First issue is about RK356x GIC not supporting programmable
|
|
shareability, while reporting it as supported in a GIC's feature
|
|
register. Rockchip assigned Erratum ID #3568001 for this issue. This
|
|
patch adds dma-noncoherent property to the GIC node, denoting that a SW
|
|
workaround is required for mitigating the issue.
|
|
|
|
Second issue is about GIC AXI master interface addressing limited to
|
|
the first 4GB of physical address space. Rockchip assigned Erratum
|
|
ID #3568002 for this issue.
|
|
|
|
Now that kernel supports quirks for both of the erratums, add
|
|
MSI controller node to RK356x device-tree.
|
|
|
|
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
|
|
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
|
|
Link: https://lore.kernel.org/all/20250216221634.364158-3-dmitry.osipenko@collabora.com
|
|
---
|
|
arch/arm64/boot/dts/rockchip/rk356x-base.dtsi | 12 ++++++++++++
|
|
1 file changed, 12 insertions(+)
|
|
|
|
--- a/arch/arm64/boot/dts/rockchip/rk356x.dtsi
|
|
+++ b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
|
|
@@ -323,6 +323,18 @@
|
|
mbi-alias = <0x0 0xfd410000>;
|
|
mbi-ranges = <296 24>;
|
|
msi-controller;
|
|
+ ranges;
|
|
+ #address-cells = <2>;
|
|
+ #size-cells = <2>;
|
|
+ dma-noncoherent;
|
|
+
|
|
+ its: msi-controller@fd440000 {
|
|
+ compatible = "arm,gic-v3-its";
|
|
+ reg = <0x0 0xfd440000 0 0x20000>;
|
|
+ dma-noncoherent;
|
|
+ msi-controller;
|
|
+ #msi-cells = <1>;
|
|
+ };
|
|
};
|
|
|
|
usb_host0_ehci: usb@fd800000 {
|