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[0/3] cpufreq: sun50i: add Allwinner H700 speed bin and additional OPPs

Message ID 20240607092140.33112-1-ryan@testtoast.com (mailing list archive)
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Series cpufreq: sun50i: add Allwinner H700 speed bin and additional OPPs | expand

Message

Ryan Walklin June 7, 2024, 9:20 a.m. UTC 
Hi,

Support for the Allwinner H618, H618 and H700 was added to the sun50i cpufreq-nvmem driver recently [1] however at the time some operating points supported by the H700 and in use in vendor BSPs were found to be unstable during testing, so the H700 speed bin was not included in the mainline driver. 

Retesting with kernel 6.10rc2 (which carries subsequent fixes for the driver) shows stable operation with these additional OPPs.

This patchset adds the H700 speedbin index, enables the additional operating points for the H700 in the H616 OPP table, and enables DVFS support for the Anbernic REG35XX handheld devices, which are the only mainline-supported devices currently using the H700.

Regards,

Ryan

[1] https://lore.kernel.org/linux-sunxi/20240418154408.1740047-1-andre.przywara@arm.com

Ryan Walklin (3):
  cpufreq: sun50i: add Allwinner H700 speed bin
  arm64: dts: allwinner: h616: add additional CPU OPPs for the H700
  arm64: dts: allwinner: rg35xx: Enable DVFS CPU frequency scaling

 .../dts/allwinner/sun50i-h616-cpu-opp.dtsi    | 25 +++++++++++++------
 .../sun50i-h700-anbernic-rg35xx-2024.dts      |  4 +--
 drivers/cpufreq/sun50i-cpufreq-nvmem.c        |  3 +++
 3 files changed, 23 insertions(+), 9 deletions(-)

Comments

Chen-Yu Tsai June 22, 2024, 3:17 p.m. UTC | #1 
On Fri, 07 Jun 2024 21:20:32 +1200, Ryan Walklin wrote:
> Support for the Allwinner H618, H618 and H700 was added to the sun50i cpufreq-nvmem driver recently [1] however at the time some operating points supported by the H700 and in use in vendor BSPs were found to be unstable during testing, so the H700 speed bin was not included in the mainline driver.
> 
> Retesting with kernel 6.10rc2 (which carries subsequent fixes for the driver) shows stable operation with these additional OPPs.
> 
> This patchset adds the H700 speedbin index, enables the additional operating points for the H700 in the H616 OPP table, and enables DVFS support for the Anbernic REG35XX handheld devices, which are the only mainline-supported devices currently using the H700.
> 
> Regards,
> 
> [...]

Applied to sunxi/dt-for-6.11 in sunxi/linux.git, thanks!

[2/3] arm64: dts: allwinner: h616: add additional CPU OPPs for the H700
      https://git.kernel.org/sunxi/linux/c/b05f15d0fc15
[3/3] arm64: dts: allwinner: rg35xx: Enable DVFS CPU frequency scaling
      https://git.kernel.org/sunxi/linux/c/e1e61fe3452d

Best regards,
Philippe Simons June 25, 2024, 3:21 p.m. UTC | #2 
I made some more tests, and it seems the schedutil governors is hanging.

I don't have the technical knowledge to find why or where, but I wanted 
to report it here.

Others cpu_freq governors are working fine (so far).


Philippe

On 22/06/24 17:17, Chen-Yu Tsai wrote:
> On Fri, 07 Jun 2024 21:20:32 +1200, Ryan Walklin wrote:
>> Support for the Allwinner H618, H618 and H700 was added to the sun50i cpufreq-nvmem driver recently [1] however at the time some operating points supported by the H700 and in use in vendor BSPs were found to be unstable during testing, so the H700 speed bin was not included in the mainline driver.
>>
>> Retesting with kernel 6.10rc2 (which carries subsequent fixes for the driver) shows stable operation with these additional OPPs.
>>
>> This patchset adds the H700 speedbin index, enables the additional operating points for the H700 in the H616 OPP table, and enables DVFS support for the Anbernic REG35XX handheld devices, which are the only mainline-supported devices currently using the H700.
>>
>> Regards,
>>
>> [...]
> Applied to sunxi/dt-for-6.11 in sunxi/linux.git, thanks!
>
> [2/3] arm64: dts: allwinner: h616: add additional CPU OPPs for the H700
>        https://git.kernel.org/sunxi/linux/c/b05f15d0fc15
> [3/3] arm64: dts: allwinner: rg35xx: Enable DVFS CPU frequency scaling
>        https://git.kernel.org/sunxi/linux/c/e1e61fe3452d
>
> Best regards,