linux-kernel - Re: [APPROACH 2 1/2] arm64: dts: amlogic: list all slave clocks for audio clock controller

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Date: Sun, 12 May 2024 22:06:23 +0300
From: Jan Dakinevich <jan.dakinevich@...utedevices.com>
To: Rob Herring <robh@...nel.org>
CC: Conor Dooley <conor+dt@...nel.org>, <devicetree@...r.kernel.org>, Jerome
 Brunet <jbrunet@...libre.com>, Kevin Hilman <khilman@...libre.com>, Krzysztof
 Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	<linux-amlogic@...ts.infradead.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-clk@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Martin
 Blumenstingl <martin.blumenstingl@...glemail.com>, Michael Turquette
	<mturquette@...libre.com>, Neil Armstrong <neil.armstrong@...aro.org>,
	Stephen Boyd <sboyd@...nel.org>
Subject: Re: [APPROACH 2 1/2] arm64: dts: amlogic: list all slave clocks for
 audio clock controller



On 5/8/24 20:50, Rob Herring wrote:
> On Wed, May 08, 2024 at 05:42:58PM +0300, Jan Dakinevich wrote:
>> Signed-off-by: Jan Dakinevich <jan.dakinevich@...utedevices.com>
>> ---
>>  arch/arm64/boot/dts/amlogic/meson-axg.dtsi | 27 ++++++++++++++++++++--
>>  arch/arm64/boot/dts/amlogic/meson-g12.dtsi | 26 +++++++++++++++++++--
>>  arch/arm64/boot/dts/amlogic/meson-sm1.dtsi | 26 +++++++++++++++++++--
>>  3 files changed, 73 insertions(+), 6 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
>> index 6d12b760b90f..28f4ec5f39b0 100644
>> --- a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
>> +++ b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
>> @@ -1342,7 +1342,9 @@ clkc_audio: clock-controller@0 {
>>  					 <&clkc CLKID_HIFI_PLL>,
>>  					 <&clkc CLKID_FCLK_DIV3>,
>>  					 <&clkc CLKID_FCLK_DIV4>,
>> -					 <&clkc CLKID_GP0_PLL>;
>> +					 <&clkc CLKID_GP0_PLL>,
>> +					 <0>, <0>, <0>, <0>, <0>, <0>, <0>, <0>, <0>, <0>,
>> +					 <0>, <0>, <0>, <0>, <0>, <0>, <0>, <0>, <0>, <0>;
> 
> All 3 cases are just unused clocks on the end. I suppose that's not 
> always the case. You could just set 'minItems' in the binding to 
> avoid needing to pad the end and the dts changes.
> 

You are right. I mistakenly thought that 'minItems' can not be
redefined. But not, it is allowed to redefine it and it works. Thus,
this patch is not needed for this approach.

Anyway, what do you think about first approach? As for me, it is more
simple and readable.

> Rob

-- 
Best regards
Jan Dakinevich