From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Gabriele Paoloni <gabriele.paoloni@huawei.com>,
guohanjun@huawei.com, wangzhou1@hisilicon.com,
liudongdong3@huawei.com, linuxarm@huawei.com,
qiujiang@huawei.com, bhelgaas@google.com,
Lorenzo.Pieralisi@arm.com, tn@semihalf.com,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
xuwei5@hisilicon.com, linux-acpi@vger.kernel.org, jcm@redhat.com,
zhangjukuo@huawei.com, liguozhu@hisilicon.com
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 [thread overview]
Message-ID: <3532826.pJr5R5Xa4c@wuerfel> (raw)
In-Reply-To: <1454935264-6076-3-git-send-email-gabriele.paoloni@huawei.com>
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
next prev parent reply other threads:[~2016-02-08 13:48 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-08 12:41 [RFC PATCH v2 0/3] Add ACPI support for HiSilicon PCIe Host Controllers Gabriele Paoloni
2016-02-08 12:41 ` [RFC PATCH v2 1/3] PCI: hisi: re-architect Hip05/Hip06 controllers driver to preapare for ACPI Gabriele Paoloni
2016-02-08 13:50 ` Arnd Bergmann
2016-02-08 16:06 ` Gabriele Paoloni
2016-02-08 16:32 ` Arnd Bergmann
2016-02-08 16:51 ` Gabriele Paoloni
2016-02-09 16:27 ` Arnd Bergmann
2016-02-09 16:52 ` Gabriele Paoloni
2016-02-08 12:41 ` [RFC PATCH v2 2/3] PCI: hisi: Make the HiSilicon PCIe host controller ECAM compliant Gabriele Paoloni
2016-02-08 13:48 ` Arnd Bergmann [this message]
2016-02-08 15:55 ` Gabriele Paoloni
2016-02-08 16:29 ` Arnd Bergmann
2016-02-08 17:21 ` Gabriele Paoloni
2016-02-09 15:32 ` Arnd Bergmann
2016-02-09 15:56 ` Gabriele Paoloni
2016-02-08 12:41 ` [RFC PATCH v2 3/3] PCI/ACPI: hisi: Add ACPI support for HiSilicon SoCs Host Controllers Gabriele Paoloni
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