Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [RFC PATCH v2 2/3] PCI: hisi: Make the HiSilicon PCIe host controller ECAM compliant | Date | Mon, 08 Feb 2016 14:48:18 +0100 |
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On Monday 08 February 2016 12:41:03 Gabriele Paoloni wrote: > From: gabriele paoloni <gabriele.paoloni@huawei.com> > > This patch modifies the current Hip05/Hip06 PCIe host controller > driver to make it ECAM compliant. This is needed in preparation > for the ACPI based driver to allow both DT and ACPI drivers to > use the same BIOS (that configure the Designware iATUs). > > Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com> > Signed-off-by: Dongdong Liu <liudongdong3@huawei.com> >
Doesn't this break backwards compatibility?
I think you need to use a new compatible string in the firmware if you change the register layout, and then change the driver to support both the old and the new layout.
Arnd
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