linux-kernel - Re: [PATCH 1/5] arm64: dts: apq8016-sbc: add regulators support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 12 Jan 2016 14:30:34 +0000
From:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:	Arnd Bergmann <arnd@...db.de>
CC:	andy.gross@...aro.org, linux-arm-msm@...r.kernel.org,
	Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/5] arm64: dts: apq8016-sbc: add regulators support



On 12/01/16 13:59, Arnd Bergmann wrote:
> On Tuesday 12 January 2016 13:46:32 Srinivas Kandagatla wrote:
>>          };
>>
>> +       smd {
>> +               rpm {
>> +                       rpm-requests {
>> +                               pm8916-regulators {
>> +
>> +                                       vdd_l1_l2_l3-supply = <&pm8916_s3>;
>> +                                       vdd_l5-supply = <&pm8916_s3>;
>> +                                       vdd_l4_l5_l6-supply = <&pm8916_s4>;
>> +                                       vdd_l7-supply = <&pm8916_s4>;
>> +
>>
>
> If you're nested this deeply, you should consider using labels, e.g.
>
Labels are good and works for me.

Stephen/Andy are you ok to use labels for such deeply nested nodes in 
board dts?

> / {
>         ...
>
>         smd {
>                 rpm {
>                        rpm-requests {
>                                 regulators: pm8916-regulators {
>
> 				};
> 			};
> 		};
> 	};
>
> 	...
> };
>
>
> &regulators {
>          vdd_l1_l2_l3-supply = <&pm8916_s3>;
>          vdd_l5-supply = <&pm8916_s3>;
>          vdd_l4_l5_l6-supply = <&pm8916_s4>;
>          vdd_l7-supply = <&pm8916_s4>;
>
> 	s1 {
>                   regulator-min-microvolt = <375000>;
>                   regulator-max-microvolt = <1562000>;
> 	};
>
>          s3 {
> 	        regulator-min-microvolt = <375000>;
> 	        regulator-max-microvolt = <1562000>;
>          };
>
> 	...
> };
>
> btw, it seems odd to me that all those nodes under 'smd'
> have names but no addresses.
These regulators are identified by the node names, and have no addresses 
associated with it as control goes over SMD based IPC to the rpm.

https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/regulator/qcom,smd-rpm-regulator.txt?id=refs/tags/next-20160112

--srini

>
> 	Arnd
>