[PATCH v2 4/4] arm64: dts: amlogic: t7: Add clk measure support
Jian Hu
jian.hu at amlogic.com
Mon Apr 20 23:40:22 PDT 2026
Hi Ronald and Neil,
Thank you for your patient explanation.
On 4/20/2026 4:52 PM, Neil Armstrong wrote:
> [ EXTERNAL EMAIL ]
>
> On 4/20/26 05:25, Jian Hu wrote:
>> Hi Ronald,
>>
>>
>> Thanks for your review.
>>
>> On 4/17/2026 5:48 PM, Ronald Claveau wrote:
>>> [ EXTERNAL EMAIL ]
>>>
>>> Hello Jian,
>>>
>>> On 4/15/26 10:33 AM, Jian Hu via B4 Relay wrote:
>>>> From: Jian Hu <jian.hu at amlogic.com>
>>>>
>>>> Add the clock measure device to the T7 SoC family.
>>>>
>>>> Signed-off-by: Jian Hu <jian.hu at amlogic.com>
>>>> ---
>>>> arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi | 5 +++++
>>>> 1 file changed, 5 insertions(+)
>>>>
>>>> diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
>>>> b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
>>>> index 7fe72c94ed62..cec2ea74850d 100644
>>>> --- a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
>>>> +++ b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
>>>> @@ -701,6 +701,11 @@ pwm_ao_cd: pwm at 60000 {
>>>> status = "disabled";
>>>> };
>>>>
>>>> + clock-measurer at 48000 {
>>>> + compatible = "amlogic,t7-clk-measure";
>>>> + reg = <0x0 0x48000 0x0 0x1c>;
>>>> + };
>>>> +
>>> Can you please order by reg, it should be between pwm_ao_gh and pwm_ab.
>>> Thank you.
>>
>>
>> According to the "Order of Nodes" chapter in
>> Documentation/devicetree/bindings/dts-coding-style.rst,
>>
>> nodes of the same type should be grouped together, and this takes
>> higher priority.
>>
>> So I have placed the clock-measure node after all PWM nodes to avoid
>> splitting the PWM group.
>
> This is not something we ever followed in the past, and I don't think
> it makes sens here.
>
>
> """
> Alternatively for some subarchitectures, nodes of the same type can be
> grouped together, e.g. all I2C controllers one after another even if this
> breaks unit address ordering.
> """
>
> This doesn't apply here, so order strictly by address.
>
> Neil
>
Ok, I will order it by address in the next version.
Best regards,
Jian
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