linux-kernel - Re: [PATCH 1/2] dt-bindings: clock: add ID for eMMC for EN7581

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Message-ID: <d2b9bcba-703c-4d5e-8677-65cacc8f2636@kernel.org>
Date: Mon, 16 Dec 2024 08:29:26 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Christian Marangi <ansuelsmth@...il.com>
Cc: Michael Turquette <mturquette@...libre.com>,
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, linux-clk@...r.kernel.org,
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, upstream@...oha.com
Subject: Re: [PATCH 1/2] dt-bindings: clock: add ID for eMMC for EN7581

On 13/12/2024 12:16, Christian Marangi wrote:
> On Fri, Dec 13, 2024 at 12:01:40PM +0100, Krzysztof Kozlowski wrote:
>> On Wed, Dec 11, 2024 at 12:22:37PM +0100, Christian Marangi wrote:
>>> Add ID for eMMC for EN7581. This is to control clock selection of eMMC
>>> between 200MHz and 150MHz.
>>>
>>> Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
>>> ---
>>>  include/dt-bindings/clock/en7523-clk.h | 3 ++-
>>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/include/dt-bindings/clock/en7523-clk.h b/include/dt-bindings/clock/en7523-clk.h
>>> index 717d23a5e5ae..78d16068228a 100644
>>> --- a/include/dt-bindings/clock/en7523-clk.h
>>> +++ b/include/dt-bindings/clock/en7523-clk.h
>>> @@ -11,7 +11,8 @@
>>>  #define EN7523_CLK_NPU		5
>>>  #define EN7523_CLK_CRYPTO	6
>>>  #define EN7523_CLK_PCIE		7
>>> +#define EN7581_CLK_EMMC		8
>>>  
>>> -#define EN7523_NUM_CLOCKS	8
>>> +#define EN7523_NUM_CLOCKS	9
>>
>> This cannot change.
>>
>> If this changes, then it is not a binding and first drop it in separate
>> patch.
>>
>> Best regards,
>> Krzysztof
>>
> 
> Hi Krzysztof,
> 
> maybe I can introduce EN7581_NUM_CLOCKS with the correct number? Just to
> give more info about this... It's not clear to me why NUM_CLOCKS is
> needed considering is only needed in clk-en7523.c to probe the driver
> and allock memory...
> 
> Anyway is a different define OK for you?

I don't understand. You just added that enum with corrected number...
Anyway, review does not change. Number of clocks is not a binding. Drop
or don't touch.

Best regards,
Krzysztof