From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shannon Zhao Subject: Re: [PATCH 0/3] Add AMBA bus probing support to ACPI Date: Thu, 29 Oct 2015 22:47:22 +0800 Message-ID: <5632317A.40607@linaro.org> References: <1443609530-21524-1-git-send-email-graeme.gregory@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1443609530-21524-1-git-send-email-graeme.gregory@linaro.org> Sender: linux-kernel-owner@vger.kernel.org To: Graeme Gregory , linux-acpi@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, Shannon Zhao List-Id: linux-acpi@vger.kernel.org On 2015/9/30 18:38, Graeme Gregory wrote: > As discussed when Shannon Zhao sent a patch to add platform_device support > to pl061 driver. Russel and other maintainers prefered that ACPI learned > how to create AMBA devices rather than converting/adding platform_device > support to AMBA drivers. > > http://comments.gmane.org/gmane.linux.ports.arm.kernel/431364 > > 1) Adds basic AMBA device probing support to ACPI, it uses a whitelist of > device IDs as the number of AMBA devices is limited. Currently the two ids > present are those used in QEMU for arm64. > > 2) Adds the plumbing into ACPI probe sequence. > > 3) From ACPI pl011 is only defined (SBSA document) to be in SBSA mode which has > reduced functionality. There may be a better method to do this that I have > overlooked. > Thanks. I test this patchset with PL061 on QEMU for arm64 through below patchset[1]. It works well. Tested-by: Shannon Zhao [1] https://git.linaro.org/people/shannon.zhao/qemu.git/shortlog/refs/heads/PowerButton_v2 -- Shannon