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SubjectRe: [PATCH] clk: qcom: apss-ipq-pll: remove 'config_ctl_hi_val' from Stromer pll configs
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On 5/14/2024 12:14 AM, Gabor Juhos wrote:
> 2024. 05. 10. 18:25 keltezéssel, Kathiravan Thirumoorthy írta:
>>
>>
>> On 5/10/2024 12:23 AM, Konrad Dybcio wrote:
>>> On 9.05.2024 10:08 AM, Gabor Juhos wrote:
>>>> Since the CONFIG_CTL register is only 32 bits wide in the Stromer
>>>> and Stromer Plus PLLs , the 'config_ctl_hi_val' values from the
>>>> IPQ5018 and IPQ5332 configurations are not used so remove those.
>>>>
>>>> No functional changes.
>>>>
>>>> Signed-off-by: Gabor Juhos <j4g8y7@gmail.com>
>>>> ---
>>>
>>> Hm, it sounds suspicious that we'd have these settings then.. Could somebody from
>>> QC please confirm that everything's alright here?
>>
>>
>> I checked the HW doc and yes in both IPQ5018 and IPQ5332 CONFIG_CTL_U register
>> is not implemented. I see offset of CONFIG_CTL_U register is removed in the
>> change[1] by Gabor.
>
> Thanks for confirming!
>
>>
>> Given that, should we also drop the pll_has_64bit_config() if block from
>> clk_stromer_pll_configure function?
>
> If we can be sure, that there will be no Stromer PLLs which implements that
> register we can drop the check. Also, since the SUPPORTS_FSM_MODE flag is not
> set for any of the Stromer (Plus) Plls supported currently, the related check
> can be dropped as well.
>
> However I would keep that as is for now. I'm planning to remove the
> clk_stromer_pll_configure() function entirely but that needs a bunch of
> preparatory patches which I'm working on at the moment.
>


It was Stephen's suggestion[1] to introduce the
clk_stromer_pll_configure() to avoid touching the
clk_alpha_pll_configure() which has been used by many PLLs. However if
we have a valid points to remove this API, then yes.

[1]
https://lore.kernel.org/linux-arm-msm/fd150fa2b35e1e07808e3d1e67e1def7.sboyd@kernel.org/


>>
>> Nevertheless, for this patch
>>
>> Reviewed-by: Kathiravan Thirumoorthy <quic_kathirav@quicinc.com>
>
> Thank you!
>
> Regards,
> Gabor

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