riscv: dts: sifive: fu740: fix size of pcie 32bit memory
authorBen Dooks <ben.dooks@codethink.co.uk>
Fri, 6 Jan 2023 13:44:56 +0000 (13:44 +0000)
committerConor Dooley <conor.dooley@microchip.com>
Sat, 7 Jan 2023 19:31:37 +0000 (19:31 +0000)
commit43d5f5d63699724d47f0d9e0eae516a260d232b4
tree91bbd51471c385fd703c224b412287d9af915a4f
parent1b929c02afd37871d5afb9d498426f83432e71c2
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>
arch/riscv/boot/dts/sifive/fu740-c000.dtsi