linux-kernel - RE: [PATCH v2 2/2] clk: scmi: Fix min and max rate when registering clocks with discrete rates

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Date:   Thu, 9 Jul 2020 08:55:12 +0000
From:   Dien Pham <dien.pham.ry@...esas.com>
To:     Sudeep Holla <sudeep.holla@....com>
CC:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
        Stephen Boyd <sboyd@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Michael Turquette <mturquette@...libre.com>
Subject: RE: [PATCH v2 2/2] clk: scmi: Fix min and max rate when registering
 clocks with discrete rates

Dear Sudeep-san,

>-----Original Message-----
>From: Sudeep Holla <sudeep.holla@....com> 
>Sent: Thursday, July 9, 2020 3:39 PM
>To: Dien Pham <dien.pham.ry@...esas.com>
>Cc: linux-arm-kernel@...ts.infradead.org; linux-clk@...r.kernel.org; Stephen Boyd <sboyd@...nel.org>; linux-kernel@...r.kernel.org; Michael Turquette <mturquette@...libre.com>; Sudeep Holla <sudeep.holla@....com>
>Subject: Re: [PATCH v2 2/2] clk: scmi: Fix min and max rate when registering clocks with discrete rates
>
>On Thu, Jul 09, 2020 at 08:26:54AM +0000, Dien Pham wrote:
>> Hi Sudeep,
>>
>> Thanks for your patch.
>>
>> >-----Original Message-----
>> >From: Sudeep Holla <sudeep.holla@....com>
>> >Sent: Thursday, July 9, 2020 3:17 PM
>> >To: linux-arm-kernel@...ts.infradead.org; linux-clk@...r.kernel.org; Stephen Boyd <sboyd@...nel.org>
>> >Cc: Sudeep Holla <sudeep.holla@....com>; linux-kernel@...r.kernel.org; Michael Turquette <mturquette@...libre.com>; Dien Pham <dien.pham.ry@...esas.com>
>> >Subject: [PATCH v2 2/2] clk: scmi: Fix min and max rate when registering clocks with discrete rates
>> >
>> >Currently we are not initializing the scmi clock with discrete rates correctly. We fetch the min_rate and max_rate value only for clocks with ranges and ignore the ones with discrete rates. This will lead to wrong initialization of rate range when clock supports discrete rate.
>> >
>> >Fix this by using the first and the last rate in the sorted list of the discrete clock rates while registering the clock.
>> >
>> >Link: https://lore.kernel.org/r/20200708110725.18017-2-sudeep.holla@arm.com
>> >Fixes: 6d6a1d82eaef7 ("clk: add support for clocks provided by SCMI")
>> >Reported-by: Dien Pham <dien.pham.ry@...esas.com>
>> >Signed-off-by: Sudeep Holla <sudeep.holla@....com>
>> >---
>> > drivers/clk/clk-scmi.c | 22 +++++++++++++++++++---
>> > 1 file changed, 19 insertions(+), 3 deletions(-)
>> >
>> >Hi Stephen,
>> >
>> >If you are fine, I can take this via ARM SoC along with the change in firmware driver. However it is also fine if you want to merge this independently as there is no strict dependency. Let me know either way.
>> >
>> >v1[1]->v2:
>> >	- Fixed the missing ; which was sent by mistake.
>>
>> I tested the patch,
>> I is ok and can fix my issue.
>>
>
>Thanks for testing. Can I add ?
>
>Tested-by: Dien Pham <dien.pham.ry@...esas.com>

It is ok.

Thanks,
Best regard,
DIEN Pham