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| author | Josua Mayer <josua@solid-run.com> | 2026-06-10 14:45:23 +0300 |
|---|---|---|
| committer | Frank Li <Frank.Li@nxp.com> | 2026-06-10 18:27:22 +0300 |
| commit | de8c602d5a2180c737e55dcd3dbcbf9dcc4af292 (patch) | |
| tree | 0b73733e6577c17e4c9dc1dd885e18d4dfee04a3 | |
| parent | c10cfc952215644956284a42fa7b7860dfbcb5f5 (diff) | |
| download | linux-de8c602d5a2180c737e55dcd3dbcbf9dcc4af292.tar.xz | |
arm64: dts: lx2160a-rev2: avoid 32-bit pcie window system ram overlap
A 3GB non-prefetchable PCIe bus window can overlap with inbound DMA
addresses for low system RAM, so DMA transactions may be routed to a BAR
on the same host bridge instead of memory.
Change the 32-bit non-prefetchable PCIe window back from 3GB to 1GB on all
controllers, avoiding that overlap while keeping the added 64-bit
prefetchable region.
This partially reverts commit 9ed301397090 ("arm64: dts: lx2160a-rev2:
extend 32-bit and add 64-bit pci regions").
Fixes: 9ed301397090 ("arm64: dts: lx2160a-rev2: extend 32-bit and add 64-bit pci regions")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Closes: https://lore.kernel.org/r/9e6326f6-dad1-4169-a63c-e62ee5b341f2@app.fastmail.com
Signed-off-by: Josua Mayer <josua@solid-run.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
| -rw-r--r-- | arch/arm64/boot/dts/freescale/fsl-lx2160a-rev2.dtsi | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a-rev2.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2160a-rev2.dtsi index 3570399f9b21..3d2637fee2d3 100644 --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-rev2.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-rev2.dtsi @@ -17,7 +17,7 @@ ranges = /* 16-Bit IO Window */ <0x81000000 0x00 0x00000000 0x80 0x00010000 0x00 0x00010000>, /* 32-Bit - non-prefetchable */ - <0x82000000 0x00 0x40000000 0x80 0x40000000 0x00 0xc0000000>, + <0x82000000 0x00 0x40000000 0x80 0x40000000 0x00 0x40000000>, /* 64-Bit - prefetchable - 16GB */ <0xC3000000 0x84 0x00000000 0x84 0x00000000 0x04 0x00000000>; @@ -37,7 +37,7 @@ ranges = /* 16-Bit IO Window */ <0x81000000 0x00 0x00000000 0x88 0x00010000 0x00 0x00010000>, /* 32-Bit - non-prefetchable */ - <0x82000000 0x00 0x40000000 0x88 0x40000000 0x00 0xc0000000>, + <0x82000000 0x00 0x40000000 0x88 0x40000000 0x00 0x40000000>, /* 64-Bit - prefetchable - 16GB */ <0xC3000000 0x8c 0x00000000 0x8c 0x00000000 0x04 0x00000000>; @@ -57,7 +57,7 @@ ranges = /* 16-Bit IO Window */ <0x81000000 0x00 0x00000000 0x90 0x00010000 0x00 0x00010000>, /* 32-Bit - non-prefetchable */ - <0x82000000 0x00 0x40000000 0x90 0x40000000 0x00 0xc0000000>, + <0x82000000 0x00 0x40000000 0x90 0x40000000 0x00 0x40000000>, /* 64-Bit - prefetchable - 16GB */ <0xC3000000 0x94 0x00000000 0x94 0x00000000 0x04 0x00000000>; @@ -78,7 +78,7 @@ ranges = /* 16-Bit IO Window */ <0x81000000 0x00 0x00000000 0x98 0x00010000 0x00 0x00010000>, /* 32-Bit - non-prefetchable */ - <0x82000000 0x00 0x40000000 0x98 0x40000000 0x00 0xc0000000>, + <0x82000000 0x00 0x40000000 0x98 0x40000000 0x00 0x40000000>, /* 64-Bit - prefetchable - 16GB */ <0xC3000000 0x9c 0x00000000 0x9c 0x00000000 0x04 0x00000000>; @@ -98,7 +98,7 @@ ranges = /* 16-Bit IO Window */ <0x81000000 0x00 0x00000000 0xa0 0x00010000 0x00 0x00010000>, /* 32-Bit - non-prefetchable */ - <0x82000000 0x00 0x40000000 0xa0 0x40000000 0x00 0xc0000000>, + <0x82000000 0x00 0x40000000 0xa0 0x40000000 0x00 0x40000000>, /* 64-Bit - prefetchable - 16GB */ <0xC3000000 0xa4 0x00000000 0xa4 0x00000000 0x04 0x00000000>; @@ -118,7 +118,7 @@ ranges = /* 16-Bit IO Window */ <0x81000000 0x00 0x00000000 0xa8 0x00010000 0x00 0x00010000>, /* 32-Bit - non-prefetchable */ - <0x82000000 0x00 0x40000000 0xa8 0x40000000 0x00 0xc0000000>, + <0x82000000 0x00 0x40000000 0xa8 0x40000000 0x00 0x40000000>, /* 64-Bit - prefetchable - 16GB */ <0xC3000000 0xac 0x00000000 0xac 0x00000000 0x04 0x00000000>; |