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COOLING7d

Revision v2 of 2 in this series.

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  2. v2 current

[PATCH v2 2/3] arm64: dts: imx94: Avoid 32-bit PCIe window System RAM overlap

From: <hidden>
Date: 2026-08-21 05:39:49
Also in: imx, linux-devicetree, lkml
Subsystem: arm/freescale imx / mxc / layerscape arm architecture, the rest · Maintainers: Frank Li, Sascha Hauer, Linus Torvalds

From: Richard Zhu <hongxing.zhu@nxp.com>

Move the PCIe non-prefetchable memory PCI bus address from 0xe0000000
to 0x10000000 to avoid overlap with DRAM. The 0x10000000 range is
reserved and safe to use.

Fixes: ffccbd6804e88 ("arm64: dts: imx94: Correct PCIe outbound address space configuration")
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
---
 arch/arm64/boot/dts/freescale/imx94.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/freescale/imx94.dtsi b/arch/arm64/boot/dts/freescale/imx94.dtsi
index 34833e62bd796..afaaf70417d23 100644
--- a/arch/arm64/boot/dts/freescale/imx94.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx94.dtsi
@@ -1379,7 +1379,7 @@ pcie0: pcie@4c300000 {
 			      <0 0x4c340000 0 0x4000>;
 			reg-names = "dbi", "config", "atu", "app";
 			ranges = <0x43000000 0x9 0x00000000 0x9 0x00000000 0x0 0xe0000000>,
-				 <0x82000000 0x0 0xe0000000 0x9 0xe0000000 0x0 0x10000000>,
+				 <0x82000000 0x0 0x10000000 0x9 0xe0000000 0x0 0x10000000>,
 				 <0x81000000 0x0 0x00000000 0x9 0xf0000000 0x0 0x00100000>;
 			#address-cells = <3>;
 			#size-cells = <2>;
-- 
2.34.1

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