linux-kernel - Re: [PATCH v3 0/7] add Amlogic A1 clock controller driver

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Date:   Mon, 2 Dec 2019 14:01:47 +0800
From:   Jian Hu <jian.hu@...ogic.com>
To:     Jerome Brunet <jbrunet@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>
CC:     Kevin Hilman <khilman@...libre.com>, Rob Herring <robh@...nel.org>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Qiufang Dai <qiufang.dai@...ogic.com>,
        Jianxin Pan <jianxin.pan@...ogic.com>,
        Victor Wan <victor.wan@...ogic.com>,
        Chandle Zou <chandle.zou@...ogic.com>,
        <linux-clk@...r.kernel.org>, <linux-amlogic@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: Re: [PATCH v3 0/7] add Amlogic A1 clock controller driver



On 2019/11/29 23:28, Jerome Brunet wrote:
> 
> On Fri 29 Nov 2019 at 15:45, Jian Hu <jian.hu@...ogic.com> wrote:
> 
>> add support for Amlogic A1 clock driver, the clock includes
>> three parts: peripheral clocks, pll clocks, CPU clocks.
>> sys pll and CPU clocks will be sent in next patch.
>>
>> Changes since v1 at [2]:
> 
> v2 or v1 ??
It is v2 here, I will fix it in next version.
> 
>> -add probe function for A1
>> -seperate the clock driver into two patch
>> -change some clock flags and ops
>> -add support for a1 PLL ops
>> -add A1 clock node
>>
>> Changes since v1 at [1]:
>> -place A1 config alphabetically
>> -add actual reason for RO ops, CLK_IS_CRITICAL, CLK_IGNORE_UNUSED
>> -separate the driver into two driver: peripheral and pll driver
>> -delete CLK_IGNORE_UNUSED flag for pwm b/c/d/e/f clock, dsp clock
>> -delete the change in Kconfig.platforms, address to Kevin alone
>> -remove the useless comments
>> -modify the meson pll driver to support A1 PLLs
>>
>> [1] https://lkml.kernel.org/r/1569411888-98116-1-git-send-email-jian.hu@amlogic.com
>> [2] https://lkml.kernel.org/r/1571382865-41978-1-git-send-email-jian.hu@amlogic.com
>>
>> Jian Hu (7):
>>    dt-bindings: clock: meson: add A1 PLL clock controller bindings
>>    clk: meson: add support for A1 PLL clock ops
>>    clk: meson: eeclk: refactor eeclk common driver to support A1
>>    clk: meson: a1: add support for Amlogic A1 PLL clock driver
>>    dt-bindings: clock: meson: add A1 peripheral clock controller bindings
>>    clk: meson: a1: add support for Amlogic A1 Peripheral clock driver
>>    arm64: dts: meson: add A1 PLL and periphs clock controller
> 
> The arm64 is for the DT maintainer. Please send it separately after this
> series is applied (if it gets applied)
> 
>> Please fix the underlying issue, then you can post your series again.
> 
> This was a comment on your v2. Did you fix the orphan/ordering issue ?

> If you did, you probably should mention it here.
Yes, I have fixed it in A1 periphs driver, not fixed it in CCF.
I have realised a probe function for A1 periphs driver, Not using the 
common probe interface in meson-eeclk.c. Skip registering xtal_fixedpll 
and xtal_hifipll clocks when register all periphs clocks. And after the 
provider registration. Registering xtal_fixedpll and xtal_hifipll clock 
alone.

I will add some comments here about orphan issue.

And I have noticed you have fixed it in CCF,  I will update the A1 
periphs driver, drop the probe function in the next vertion.
Could I send the v4 after your patch 'clk: walk orphan list on clock 
provider registration' is applied? Or I can send v4 based on your patch now.

> If you did not, I'm probably not going to review this further until you do.
> 
>>
>>   .../bindings/clock/amlogic,a1-clkc.yaml       |   70 +
>>   .../bindings/clock/amlogic,a1-pll-clkc.yaml   |   56 +
>>   arch/arm64/boot/dts/amlogic/meson-a1.dtsi     |   26 +
>>   drivers/clk/meson/Kconfig                     |   20 +
>>   drivers/clk/meson/Makefile                    |    2 +
>>   drivers/clk/meson/a1-pll.c                    |  334 +++
>>   drivers/clk/meson/a1-pll.h                    |   56 +
>>   drivers/clk/meson/a1.c                        | 2309 +++++++++++++++++
>>   drivers/clk/meson/a1.h                        |  120 +
>>   drivers/clk/meson/clk-pll.c                   |   21 +
>>   drivers/clk/meson/clk-pll.h                   |    1 +
>>   drivers/clk/meson/meson-eeclk.c               |   59 +-
>>   drivers/clk/meson/meson-eeclk.h               |    2 +
>>   drivers/clk/meson/parm.h                      |    1 +
>>   include/dt-bindings/clock/a1-clkc.h           |   98 +
>>   include/dt-bindings/clock/a1-pll-clkc.h       |   16 +
>>   16 files changed, 3181 insertions(+), 10 deletions(-)
>>   create mode 100644 Documentation/devicetree/bindings/clock/amlogic,a1-clkc.yaml
>>   create mode 100644 Documentation/devicetree/bindings/clock/amlogic,a1-pll-clkc.yaml
>>   create mode 100644 drivers/clk/meson/a1-pll.c
>>   create mode 100644 drivers/clk/meson/a1-pll.h
>>   create mode 100644 drivers/clk/meson/a1.c
>>   create mode 100644 drivers/clk/meson/a1.h
>>   create mode 100644 include/dt-bindings/clock/a1-clkc.h
>>   create mode 100644 include/dt-bindings/clock/a1-pll-clkc.h
> 
> .
>