linux-kernel - Re: [PATCH net-next 5/5] arm64: dts: ti: k3-am625-sk: Add cpsw3g cpts PPS support

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Date:   Mon, 16 Jan 2023 22:00:18 +0530
From:   Vignesh Raghavendra <vigneshr@...com>
To:     Roger Quadros <rogerq@...nel.org>,
        Siddharth Vadapalli <s-vadapalli@...com>
CC:     <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski@...aro.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <nm@...com>,
        <kristo@...nel.org>, <nsekhar@...com>, <netdev@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>
Subject: Re: [PATCH net-next 5/5] arm64: dts: ti: k3-am625-sk: Add cpsw3g cpts
 PPS support



On 16/01/23 9:35 pm, Roger Quadros wrote:
>>>> diff --git a/arch/arm64/boot/dts/ti/k3-am625-sk.dts b/arch/arm64/boot/dts/ti/k3-am625-sk.dts
>>>> index 4f179b146cab..962a922cc94b 100644
>>>> --- a/arch/arm64/boot/dts/ti/k3-am625-sk.dts
>>>> +++ b/arch/arm64/boot/dts/ti/k3-am625-sk.dts
>>>> @@ -366,6 +366,10 @@ &cpsw3g {
>>>>  	pinctrl-names = "default";
>>>>  	pinctrl-0 = <&main_rgmii1_pins_default
>>>>  		     &main_rgmii2_pins_default>;
>>>> +
>>>> +	cpts@...00 {
>>>> +		ti,pps = <2 1>;
>>>> +	};
>>>>  };
>>>>  
>>>>  &cpsw_port1 {
>>>> @@ -464,3 +468,19 @@ partition@...0000 {
>>>>  		};
>>>>  	};
>>>>  };
>>>> +
>>>> +#define TS_OFFSET(pa, val)	(0x4+(pa)*4) (0x10000 | val)
>>> Should this go in ./include/dt-bindings/pinctrl/k3.h ?
>>> That way every board DT file doesn't have to define it.
>>>
>>> The name should be made more platform specific.
>>> e.g. K3_TS_OFFSET if it is the same for all K3 platforms.
>>> If not then please add Platform name instead of K3.
>> The offsets are board specific. If it is acceptable, I will add board specific
>> macro for the TS_OFFSET definition in the ./include/dt-bindings/pinctrl/k3.h
>> file. Please let me know.
> If it is board specific then it should remain in the board file.


The values you pass to macro maybe board specific. But the macro
definition itself same for a given SoC right? Also, is its same across
K3 family ?

Please use SoC specific prefix like AM62X_TS_OFFSET() or K3_TS_OFFSET()
accordingly.

Regards
Vignesh