linux-kernel - Re: [PATCH 1/4] clk: qcom: clk-alpha-pll: Add support for lucid ole pll ops

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Message-ID: <b7590456-1cd6-8413-e1c6-561d27e804de@quicinc.com>
Date:   Wed, 24 May 2023 19:57:36 +0530
From:   Jagadeesh Kona <quic_jkona@...cinc.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Conor Dooley <conor+dt@...nel.org>
CC:     Bjorn Andersson <andersson@...nel.org>,
        Taniya Das <quic_tdas@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/4] clk: qcom: clk-alpha-pll: Add support for lucid ole
 pll ops

Hi Konrad,

Thanks for your review!

On 5/19/2023 6:39 PM, Konrad Dybcio wrote:
> 
> 
> On 19.05.2023 14:49, Jagadeesh Kona wrote:
>> Hi,
>>
>> Thanks Konrad for your review!
>>
>> On 5/10/2023 1:36 AM, Konrad Dybcio wrote:
>>>
>>>
>>> On 9.05.2023 18:12, Jagadeesh Kona wrote:
>>>> From: Taniya Das <quic_tdas@...cinc.com>
>>>>
>>>> Add support for lucid ole pll ops to configure and control the
>>>> lucid ole pll. The lucid ole pll has an additional test control
>>>> register which is required to be programmed, add support to
>>>> program the same.
>>>>
>>>> Signed-off-by: Taniya Das <quic_tdas@...cinc.com>
>>>> Signed-off-by: Jagadeesh Kona <quic_jkona@...cinc.com>
>>>> ---
>>> Isn't this commit "write to PLL_TEST_CTL_U2 on LUCID_EVO" instead?
>>>
>>> Meaninglessly duplicating ops does not seem useful.
>>>
>>> Konrad
>>
>> Though we are reusing same ops for EVO and OLE, PLL_TEST_CTL_U2 register programming is applicable only to OLE PLL type.
> Well, your patch makes it unconditional (modulo programmer error) so
> I think that makes little sense.. A comment would be enough, imo.
> 
> Konrad
Yes, will remove the duplicate definitions and will reuse the existing ops.

> And PLL type is useful to properly refer respective hardware datasheets. Hence added separate ops for OLE PLL type.
>>

Thanks & Regards,
Jagadeesh