linux-kernel - Re: [RESEND PATCH v2 02/13] drivers: clk: st: Simplify clock binding of STiH4xx platforms

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Date:	Mon, 20 Jun 2016 09:29:18 +0200
From:	Gabriel Fernandez <gabriel.fernandez@...aro.org>
To:	Rob Herring <robh@...nel.org>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...eaurora.org>
Cc:	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Srinivas Kandagatla <srinivas.kandagatla@...il.com>,
	Maxime Coquelin <maxime.coquelin@...com>,
	Patrice Chotard <patrice.chotard@...com>,
	Russell King <linux@...linux.org.uk>,
	Olivier Bideau <olivier.bideau@...com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Andrzej Hajda <a.hajda@...sung.com>,
	Pankaj Dev <pankaj.dev@...com>,
	Dinh Nguyen <dinguyen@...nsource.altera.com>,
	Arnd Bergmann <arnd@...db.de>,
	Thierry Reding <treding@...dia.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"kernel@...inux.com" <kernel@...inux.com>,
	linux-clk <linux-clk@...r.kernel.org>,
	Lee Jones <lee.jones@...aro.org>,
	Peter Griffin <peter.griffin@...aro.org>,
	Arnaud POULIQUEN <arnaud.pouliquen@...com>,
	Benjamin GAIGNARD <benjamin.gaignard@...com>,
	Vincent ABRIOU <vincent.abriou@...com>,
	Gabriel Fernandez <gabriel.fernandez@...com>
Subject: Re: [RESEND PATCH v2 02/13] drivers: clk: st: Simplify clock binding
 of STiH4xx platforms

Hi Rob,

On 19 June 2016 at 17:04, Rob Herring <robh@...nel.org> wrote:
> On Thu, Jun 16, 2016 at 11:20:22AM +0200, Gabriel Fernandez wrote:
>> This patch reworks the clock binding to avoid too much detail in DT.
>> Now we have only compatible string per type of clock
>> (remark from Rob https://lkml.org/lkml/2016/5/25/492)
>>
>
> I have no idea what the clock trees and clock controller in these chips
> look like, so it's hard to say if the changes here are good. It still
> looks like things are somewhat fine grained clocks in DT. I'll leave
> it up to the platform maintainers to decide...
>
>> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@...aro.org>
>> ---
>>  .../devicetree/bindings/clock/st/st,clkgen-mux.txt |  2 +-
>>  .../devicetree/bindings/clock/st/st,clkgen-pll.txt | 11 ++--
>>  .../devicetree/bindings/clock/st/st,clkgen.txt     |  2 +-
>>  .../devicetree/bindings/clock/st/st,quadfs.txt     |  6 +--
>>  drivers/clk/st/clkgen-fsyn.c                       | 41 ++++++--------
>>  drivers/clk/st/clkgen-mux.c                        | 28 ++++------
>>  drivers/clk/st/clkgen-pll.c                        | 62 ++++++++++------------
>>  7 files changed, 65 insertions(+), 87 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/clock/st/st,clkgen-mux.txt b/Documentation/devicetree/bindings/clock/st/st,clkgen-mux.txt
>> index 4d277d6..9a46cb1d7 100644
>> --- a/Documentation/devicetree/bindings/clock/st/st,clkgen-mux.txt
>> +++ b/Documentation/devicetree/bindings/clock/st/st,clkgen-mux.txt
>> @@ -10,7 +10,7 @@ This binding uses the common clock binding[1].
>>  Required properties:
>>
>>  - compatible : shall be:
>> -     "st,stih407-clkgen-a9-mux",     "st,clkgen-mux"
>> +     "st,stih407-clkgen-a9-mux"
>>
>>  - #clock-cells : from common clock binding; shall be set to 0.
>>
>> diff --git a/Documentation/devicetree/bindings/clock/st/st,clkgen-pll.txt b/Documentation/devicetree/bindings/clock/st/st,clkgen-pll.txt
>> index c9fd674..be0b043 100644
>> --- a/Documentation/devicetree/bindings/clock/st/st,clkgen-pll.txt
>> +++ b/Documentation/devicetree/bindings/clock/st/st,clkgen-pll.txt
>> @@ -9,11 +9,10 @@ Base address is located to the parent node. See clock binding[2]
>>  Required properties:
>>
>>  - compatible : shall be:
>> -     "st,stih407-plls-c32-a0",       "st,clkgen-plls-c32"
>> -     "st,stih407-plls-c32-a9",       "st,clkgen-plls-c32"
>> -     "sst,plls-c32-cx_0",            "st,clkgen-plls-c32"
>> -     "sst,plls-c32-cx_1",            "st,clkgen-plls-c32"
>> -     "st,stih418-plls-c28-a9",       "st,clkgen-plls-c32"
>
>> +     "st,clkgen-pll0"
>> +     "st,clkgen-pll0"
>
> Repeated. Supposed to be 0 and 1? This seems a bit generic, too.
Yes you are right, it's 0 and 1.
I wait remarks from Mike or Stephen before send a V3.

Thanks Rob

BR
Gabriel

>
>> +     "st,stih407-clkgen-plla9"
>> +     "st,stih418-clkgen-plla9"