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authorBen Dooks <ben.dooks@codethink.co.uk>2023-01-06 14:44:56 +0100
committerConor Dooley <conor.dooley@microchip.com>2023-01-07 20:31:37 +0100
commit43d5f5d63699724d47f0d9e0eae516a260d232b4 (patch)
tree91bbd51471c385fd703c224b412287d9af915a4f /arch
parentLinux 6.2-rc1 (diff)
downloadlinux-43d5f5d63699724d47f0d9e0eae516a260d232b4.tar.xz
linux-43d5f5d63699724d47f0d9e0eae516a260d232b4.zip
riscv: dts: sifive: fu740: fix size of pcie 32bit memory
The 32-bit memory resource is needed for non-prefetchable memory allocations on the PCIe bus, however with some cards (such as the SM768) the system fails to allocate memory from this. Checking the allocation against the datasheet, it looks like there has been a mis-calcualation of the resource for the first memory region (0x0060090000..0x0070ffffff) which in the data-sheet for the fu740 (v1p2) is from 0x0060000000..0x007fffffff. Changing this to allocate from 0x0060090000..0x007fffffff fixes the probing issues. Fixes: ae80d5148085 ("riscv: dts: Add PCIe support for the SiFive FU740-C000 SoC") Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Greentime Hu <greentime.hu@sifive.com> Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Cc: stable@vger.kernel.org Tested-by: Ron Economos <re@w6rz.net> # from IRC Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/riscv/boot/dts/sifive/fu740-c000.dtsi2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/riscv/boot/dts/sifive/fu740-c000.dtsi b/arch/riscv/boot/dts/sifive/fu740-c000.dtsi
index 43bed6c0a84f..5235fd1c9cb6 100644
--- a/arch/riscv/boot/dts/sifive/fu740-c000.dtsi
+++ b/arch/riscv/boot/dts/sifive/fu740-c000.dtsi
@@ -328,7 +328,7 @@
bus-range = <0x0 0xff>;
ranges = <0x81000000 0x0 0x60080000 0x0 0x60080000 0x0 0x10000>, /* I/O */
<0x82000000 0x0 0x60090000 0x0 0x60090000 0x0 0xff70000>, /* mem */
- <0x82000000 0x0 0x70000000 0x0 0x70000000 0x0 0x1000000>, /* mem */
+ <0x82000000 0x0 0x70000000 0x0 0x70000000 0x0 0x10000000>, /* mem */
<0xc3000000 0x20 0x00000000 0x20 0x00000000 0x20 0x00000000>; /* mem prefetchable */
num-lanes = <0x8>;
interrupts = <56>, <57>, <58>, <59>, <60>, <61>, <62>, <63>, <64>;