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powerpc/44x/bamboo: Fix PCI range
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>
Tue, 11 Dec 2018 02:27:33 +0000 (13:27 +1100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 3 Dec 2019 21:25:45 +0000 (22:25 +0100)
commita2586ad8156160f75de869871ed0040f2b2f69ea
treeece8ae05f94eec4302deb8a07bc7813249d20259
parentbdce5d5865cb7e19f5ca34f7f31a61f97dedaba6
powerpc/44x/bamboo: Fix PCI range

[ Upstream commit 3cfb9ebe906b51f2942b1e251009bb251efd2ba6 ]

The bamboo dts has a bug: it uses a non-naturally aligned range
for PCI memory space. This isnt' supported by the code, thus
causing PCI to break on this system.

This is due to the fact that while the chip memory map has 1G
reserved for PCI memory, it's only 512M aligned. The code doesn't
know how to split that into 2 different PMMs and fails, so limit
the region to 512M.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/powerpc/boot/dts/bamboo.dts