Thread (29 messages) 29 messages, 4 authors, 2020-05-21

Re: [PATCH v4 0/7] firmware: smccc: Add basic SMCCC v1.2 + ARCH_SOC_ID support

From: Sudeep Holla <hidden>
Date: 2020-05-21 07:07:27
Also in: lkml

On Wed, May 20, 2020 at 11:54:16PM +0200, Arnd Bergmann wrote:
On Wed, May 20, 2020 at 11:29 PM Will Deacon [off-list ref] wrote:
quoted
On Mon, 18 May 2020 10:12:15 +0100, Sudeep Holla wrote:
quoted
This patch series adds support for SMCCCv1.2 ARCH_SOC_ID.
This doesn't add other changes added in SMCCC v1.2 yet. They will
follow these soon along with its first user SPCI/PSA-FF.

This is tested using upstream TF-A + the patch[3] fixing the original
implementation there.

[...]
Applied to arm64 (for-next/smccc), thanks!

[1/7] firmware: smccc: Add HAVE_ARM_SMCCC_DISCOVERY to identify SMCCC v1.1 and above
      https://git.kernel.org/arm64/c/e5bfb21d98b6
[2/7] firmware: smccc: Update link to latest SMCCC specification
      https://git.kernel.org/arm64/c/15c704ab6244
[3/7] firmware: smccc: Add the definition for SMCCCv1.2 version/error codes
      https://git.kernel.org/arm64/c/0441bfe7f00a
[4/7] firmware: smccc: Drop smccc_version enum and use ARM_SMCCC_VERSION_1_x instead
      https://git.kernel.org/arm64/c/ad5a57dfe434
[5/7] firmware: smccc: Refactor SMCCC specific bits into separate file
      https://git.kernel.org/arm64/c/f2ae97062a48
[6/7] firmware: smccc: Add function to fetch SMCCC version
      https://git.kernel.org/arm64/c/a4fb17465182
[7/7] firmware: smccc: Add ARCH_SOC_ID support
      https://git.kernel.org/arm64/c/ce6488f0ce09

Arnd -- Sudeep's reply to you about the sysfs groups seemed reasonable to me,
but please shout if you'd rather I dropped this in order to pursue an
alternative approach.
I missed the reply earlier, thanks for pointing me to it again.

I'm not entirely convinced, but don't revert it for now because of that,
I assume we can find a solution.
I liked your idea of making this generic and hardcode values if required
for other drivers. I will take a look at that/
However, please have a look at the build failure report for patch 5
and fix it if you can see what went wrong.
Any pointers for that failure ? I seem to have missed them. I pushed
branch couple of times to my tree but got build success both times.
Any specific config or compilers ?

--
Regards,
Sudeep

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