Re: [PATCH 3/4] arm64: dts: qcom: sc7280: Fixup the cpufreq node

From: Sibi Sankar
Date: Sun Sep 05 2021 - 23:21:00 EST


On 2021-08-31 22:34, Bjorn Andersson wrote:
On Tue 31 Aug 08:30 PDT 2021, Matthias Kaehlcke wrote:

On Thu, Jul 29, 2021 at 11:34:44PM +0530, Sibi Sankar wrote:
> Fixup the register regions used by the cpufreq node on SC7280 SoC to
> support per core L3 DCVS.
>
> Fixes: 7dbd121a2c58 ("arm64: dts: qcom: sc7280: Add cpufreq hw node")
> Signed-off-by: Sibi Sankar <sibis@xxxxxxxxxxxxxx>

This patch landed in the Bjorn's tree, however the corresponding driver
change ("cpufreq: qcom: Re-arrange register offsets to support per core
L3 DCVS" / https://patchwork.kernel.org/project/linux-arm-msm/patch/1627581885-32165-3-git-send-email-sibis@xxxxxxxxxxxxxx/)
did not land in any maintainer tree yet AFAIK. IIUC the DT change alone
breaks cpufreq since the changed register regions require the changed
offset in the cpufreq driver.


Thanks for the note Matthias, it must have slipped by as I scraped the
inbox for things that looked ready.

I'm actually not in favor of splitting these memory blocks in DT to
facilitate the Linux implementation of splitting that in multiple
drivers...

But I've not been following up on that discussion.

Regards,
Bjorn

Sibi, please confirm or clarify that my concern is unwarranted.

Let's drop the patch asap as it breaks
SC7280 cpufreq on lnext without the driver
changes.

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