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Message-ID: <9f29d226-5c61-ca25-06ef-647769775f45@ti.com>
Date: Wed, 8 May 2024 18:56:05 +0530
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Subject: Re: [PATCH 1/3] arm64: dts: ti: k3-j722s: Add support for SERDES0
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To: Roger Quadros <rogerq@kernel.org>, <nm@ti.com>, <vigneshr@ti.com>
CC: <kristo@kernel.org>, <robh@kernel.org>, <krzk+dt@kernel.org>,
        <conor+dt@kernel.org>, <srk@ti.com>,
        <linux-arm-kernel@lists.infradead.org>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>,
        Ravi
 Gunasekaran <r-gunasekaran@ti.com>
References: <20240429120932.11456-1-r-gunasekaran@ti.com>
 <20240429120932.11456-2-r-gunasekaran@ti.com>
 <41047a89-2787-422f-a643-3e2d850da6dd@kernel.org>
 <588e4d0a-78c6-553f-3c40-0d248f4c92f9@ti.com>
 <59d8af19-5b2b-486a-9e03-2db2568b0b00@kernel.org>
From: Ravi Gunasekaran <r-gunasekaran@ti.com>
In-Reply-To: <59d8af19-5b2b-486a-9e03-2db2568b0b00@kernel.org>
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On 5/8/24 6:32 PM, Roger Quadros wrote:
> 
> 
> On 08/05/2024 15:34, Ravi Gunasekaran wrote:
>>
>>
>> On 5/8/24 5:29 PM, Roger Quadros wrote:
>>>
>>>
>>> On 29/04/2024 15:09, Ravi Gunasekaran wrote:
>>>> Add SERDES0 and its wrapper description to support USB3
>>>> and SGMII interfaces.
>>>>
>>>> Signed-off-by: Ravi Gunasekaran <r-gunasekaran@ti.com>
>>>> ---
>>>>  arch/arm64/boot/dts/ti/k3-j722s.dtsi | 54 ++++++++++++++++++++++++++++
>>>>  1 file changed, 54 insertions(+)
>>>>
>>>> diff --git a/arch/arm64/boot/dts/ti/k3-j722s.dtsi b/arch/arm64/boot/dts/ti/k3-j722s.dtsi
>>>> index c75744edb143..beba5a3ea6cc 100644
>>>> --- a/arch/arm64/boot/dts/ti/k3-j722s.dtsi
>>>> +++ b/arch/arm64/boot/dts/ti/k3-j722s.dtsi
>>>> @@ -9,6 +9,7 @@
>>>>  #include <dt-bindings/interrupt-controller/irq.h>
>>>>  #include <dt-bindings/interrupt-controller/arm-gic.h>
>>>>  #include <dt-bindings/soc/ti,sci_pm_domain.h>
>>>> +#include <dt-bindings/phy/phy-ti.h>
>>>>  
>>>>  #include "k3-am62p5.dtsi"
>>>>  
>>>> @@ -75,6 +76,50 @@
>>>>  			 <0x00 0x78000000 0x00 0x78000000 0x00 0x00008000>,
>>>>  			 <0x00 0x78100000 0x00 0x78100000 0x00 0x00008000>;
>>>>  	};
>>>> +
>>>> +	serdes_refclk: clock-cmnrefclk {
>>>
>>> What could be the generic name here?
>>>
>>
>> How about phy-clk or serdes-clk?
>> I searched for "fixed-clock" and wide range of naming conventions is followed.
> 
> We shouldn't encode the clock function in the name. How about just clk-<n> ?
> where <n> is an integer starting from 0 for such fixed-clocks on the platform?
> 

Sure. I can follow this notation.

> e.g. from arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
> 
>         tlv320_mclk: clk-0 {
>                 #clock-cells = <0>;
>                 compatible = "fixed-clock";
>                 clock-frequency = <12288000>;
>         };
> 
>>

[...]

>>
> 

-- 
Regards,
Ravi