[PATCH v11 3/6] PCI: designware: Add ARM64 support
helgaas at kernel.org
Thu Oct 22 11:28:53 PDT 2015
On Fri, Oct 16, 2015 at 06:23:38PM +0800, Zhou Wang wrote:
> This patch tries to unify ARM32 and ARM64 PCIe in designware driver. Delete
> function dw_pcie_setup, dw_pcie_scan_bus, dw_pcie_map_irq and struct hw_pci,
> move related operations to dw_pcie_host_init.
> This patch also try to use of_pci_get_host_bridge_resources for ARM32 and ARM64
> according to the suggestion for Gabriele
> This patch reverts commit f4c55c5a3f7f ("PCI: designware: Program ATU with
> untranslated address") based on 1/6 in this series. we delete *_mod_base in
> pcie-designware. This was discussed in 
> I have compiled the driver with multi_v7_defconfig. However, I don't have
> ARM32 PCIe related board to do test. It will be appreciated if someone could
> help to test it.
There's a lot going on this patch. Can you split it up at all? For
- Revert f4c55c5a3f7f (and move to right after the related [1/6]
- Switch to using of_pci_get_host_bridge_resources()
- Replacing the call of pci_common_init_dev() with equivalent code in
pcie-designware.c. This one in particular needs to be easy to review.
It's not clear to me that this new code is equivalent. For example,
pci_common_init_dev() calls pcie_bus_configure_settings(), but I don't
see that in your new code.
You already have acks and tested-by, so I assume you probably did all the
right things, but it will help me out a lot if you can break it into
bite-sized pieces. It's always better to make patches too small rather
than too large, because it's trivial to squash them back together if
needed. I think we're going to have some conflicts between this and other
pcie-designware.c changes, and small patches will also make those easier to
More information about the linux-arm-kernel