linux-kernel - Re: [PATCH v3 8/9] soc: qcom: rpmpd: Add MSM8998 power-domains

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Message-ID: <075fecfb62764c2709adb6f252ea7224@codeaurora.org>
Date:   Mon, 08 Apr 2019 14:32:58 +0530
From:   Sibi Sankar <sibis@...eaurora.org>
To:     Marc Gonzalez <marc.w.gonzalez@...e.fr>
Cc:     MSM <linux-arm-msm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 8/9] soc: qcom: rpmpd: Add MSM8998 power-domains

Hey Marc,
Thanks for the review!

On 2019-04-08 14:24, Marc Gonzalez wrote:
> On 08/04/2019 10:30, Sibi Sankar wrote:
>> On 2019-04-05 20:38, Marc Gonzalez wrote:
>>> On 27/03/2019 13:38, Sibi Sankar wrote:
>>> 
>>>> Add the shared cx/mx and sensor sub-system's cx and mx
>>>> power-domains found on MSM8998.
>>>> 
>>>> Signed-off-by: Sibi Sankar <sibis@...eaurora.org>
>>>> ---
>>>>  drivers/soc/qcom/rpmpd.c | 36 ++++++++++++++++++++++++++++++++++++
>>>>  1 file changed, 36 insertions(+)
>>>> 
>>>> diff --git a/drivers/soc/qcom/rpmpd.c b/drivers/soc/qcom/rpmpd.c
>>>> index 238a9e02e890..706a3f63038e 100644
>>>> --- a/drivers/soc/qcom/rpmpd.c
>>>> +++ b/drivers/soc/qcom/rpmpd.c
>>>> @@ -19,9 +19,12 @@
>>>>  /* Resource types */
>>>>  #define RPMPD_SMPA 0x61706d73 /* smpa */
>>>>  #define RPMPD_LDOA 0x616f646c /* ldoa */
>>>> +#define RPMPD_RWCX 0x78637772 /* rwcx */
>>>>  #define RPMPD_RWMX 0x786d7772 /* rwmx */
>>>>  #define RPMPD_RWLC 0x636c7772 /* rwlc */
>>>>  #define RPMPD_RWLM 0x6d6c7772 /* rwlm */
>>>> +#define RPMPD_RWSC 0x63737772 /* rwsc */
>>>> +#define RPMPD_RWSM 0x6d737772 /* rwsm */
>>> 
>>> I do not see any value in the comments. Maybe remove them?
>> 
>> comments were included to add value
>> though, however I guess the comments
>> were definitely not clear enough.
>> The magic values for the resources
>> are calculated as follows:
>> 
>> ascii to hex in reverse order
>> eg: smpa -> 0x61706d73
>> 
>> 0x61 0x70 0x6d 0x73
>>    a    p    m    s
> 
> Ah... I see now.
> 
> I agree that explaining *why* e.g. RPMPD_SMPA is defined as 0x61706d73
> is worthwhile indeed.
> 
> What I meant is that adding /* smpa */ to a macro named RPMPD_SMPA does
> not really bring any new information ;-)

yeah I got that

> 
> How about prefixing the whole block with a small blurb, for example
> 
> /* The value of RPMPD_X is X encoded as a little-endian, lower-case,
> ASCII string */

sure will add this ^^ instead in the next
re-spin

> 
> Regards.

-- 
-- Sibi Sankar --
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project.