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Select internal MSI target for 32-bit DMA on Pi 5 PCIe #7059

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Merged
merged 2 commits into from
Sep 22, 2025
+2 −14
Merged

Select internal MSI target for 32-bit DMA on Pi 5 PCIe #7059

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75fb5af
Revert "dtoverlays: adjust inbound windows for MIP1 on Pi 5 with 32-b…
P33M Sep 19, 2025
27c1636
dtoverlays: make pcie-32bit-dma-pi5 select internal MSI target
P33M Sep 22, 2025
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16 changes: 2 additions & 14 deletions arch/arm/boot/dts/overlays/pcie-32bit-dma-pi5-overlay.dts
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Original file line number Diff line number Diff line change
Expand Up @@ -18,22 +18,10 @@
*/
#address-cells = <3>;
#size-cells = <2>;
msi-parent = <&pciex1>;
dma-ranges = <0x02000000 0x0 0x00000000 0x0 0x00000000
0x0 0x80000000>,
<0x02000000 0x00 0xfffff000 0x10 0x00131000
0x00 0x00001000>;
0x0 0x80000000>;
};
};

fragment@1 {
target = <&mip1>;
__overlay__ {
/*
* The MIP driver uses the reg property to derive the target
* address for MSI writes - place this below 4GB.
*/
reg = <0x10 0x00131000 0x00 0xc0>,
<0x00 0xfffff000 0x00 0x1000>;
};
};
};