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Message-ID: <AM4PR0401MB1843CEA41B976C48E97BC3C6EB6E0@AM4PR0401MB1843.eurprd04.prod.outlook.com>
Date: Tue, 3 Jan 2017 07:55:49 +0000
From: Troy Jia <hongtao.jia@....com>
To: Shawn Guo <shawnguo@...nel.org>
CC: "rui.zhang@...el.com" <rui.zhang@...el.com>,
"edubezval@...il.com" <edubezval@...il.com>,
"Y.T. Tang" <yuantian.tang@....com>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
Scott Wood <scott.wood@....com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>
Subject: RE: [PATCH V2] arm64:dts:ls1046a: Add TMU device tree support
> Subject: Re: [PATCH V2] arm64:dts:ls1046a: Add TMU device tree support
>
> On Tue, Jan 03, 2017 at 02:42:19PM +0800, Jia Hongtao wrote:
> > Also add nodes and properties for thermal management support.
> >
> > Signed-off-by: Jia Hongtao <hongtao.jia@....com>
>
> The subject prefix is still not so right. There should be a space after each colon.
Sorry. I will fix it.
>
> > ---
> > Changes for V2:
> > * Update the subject title according to Shawn Guo's comment.
> > * Add comments for calibration data groups.
> > * Update "thermal-zones" property in a unified style with platform dts.
> >
> > arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi | 83
> > ++++++++++++++++++++++++++
> > 1 file changed, 83 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> > b/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> > index 38806ca..df53a4a 100644
> > --- a/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> > @@ -45,6 +45,7 @@
> > */
> >
> > #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +#include <dt-bindings/thermal/thermal.h>
> >
> > / {
> > compatible = "fsl,ls1046a";
> > @@ -67,6 +68,7 @@
> > clocks = <&clockgen 1 0>;
> > next-level-cache = <&l2>;
> > cpu-idle-states = <&CPU_PH20>;
> > + #cooling-cells = <2>;
> > };
> >
> > cpu1: cpu@1 {
> > @@ -279,6 +281,87 @@
> > clocks = <&sysclk>;
> > };
> >
> > + tmu: tmu@...0000 {
> > + compatible = "fsl,qoriq-tmu";
> > + reg = <0x0 0x1f00000 0x0 0x10000>;
> > + interrupts = <0 33 0x4>;
> > + fsl,tmu-range = <0xb0000 0x9002a 0x6004c 0x30062>;
> > + fsl,tmu-calibration =
> > + /* Calibration data group 1*/
> > + <0x00000000 0x00000026
> > + 0x00000001 0x0000002d
> > + 0x00000002 0x00000032
> > + 0x00000003 0x00000039
> > + 0x00000004 0x0000003f
> > + 0x00000005 0x00000046
> > + 0x00000006 0x0000004d
> > + 0x00000007 0x00000054
> > + 0x00000008 0x0000005a
> > + 0x00000009 0x00000061
> > + 0x0000000a 0x0000006a
> > + 0x0000000b 0x00000071
> > +
> > + /* Calibration data group 2*/
>
> The single line comment format is /* blabla */. There are space at both beginning
> and end of the text.
Will fix.
>
> Also I am asking that we use the single line comment to replace the blank line,
> which is still there.
I think keeping the newline makes it more clear in structure. But I also understand
your point - no newline inside one property, right? If so I will delete the newline.
-Hongtao.
>
> > + 0x00010000 0x00000025
> > + 0x00010001 0x0000002c
> > + 0x00010002 0x00000035
> > + 0x00010003 0x0000003d
> > + 0x00010004 0x00000045
> > + 0x00010005 0x0000004e
> > + 0x00010006 0x00000057
> > + 0x00010007 0x00000061
> > + 0x00010008 0x0000006b
> > + 0x00010009 0x00000076
> > +
> > + /* Calibration data group 3*/
> > + 0x00020000 0x00000029
> > + 0x00020001 0x00000033
> > + 0x00020002 0x0000003d
> > + 0x00020003 0x00000049
> > + 0x00020004 0x00000056
> > + 0x00020005 0x00000061
> > + 0x00020006 0x0000006d
> > +
> > + /* Calibration data group 4*/
> > + 0x00030000 0x00000021
> > + 0x00030001 0x0000002a
> > + 0x00030002 0x0000003c
> > + 0x00030003 0x0000004e>;
>
> Here is the format on my mind:
>
> fsl,tmu-calibration = <
> /* Calibration data group 1 */
> 0x00000000 0x00000026
> 0x00000001 0x0000002d
> 0x00000002 0x00000032
> 0x00000003 0x00000039
> 0x00000004 0x0000003f
> 0x00000005 0x00000046
> 0x00000006 0x0000004d
> 0x00000007 0x00000054
> 0x00000008 0x0000005a
> 0x00000009 0x00000061
> 0x0000000a 0x0000006a
> 0x0000000b 0x00000071
> /* Calibration data group 2 */
> 0x00010000 0x00000025
> 0x00010001 0x0000002c
> 0x00010002 0x00000035
> 0x00010003 0x0000003d
> 0x00010004 0x00000045
> 0x00010005 0x0000004e
> 0x00010006 0x00000057
> 0x00010007 0x00000061
> 0x00010008 0x0000006b
> 0x00010009 0x00000076
> /* Calibration data group 3 */
> 0x00020000 0x00000029
> 0x00020001 0x00000033
> 0x00020002 0x0000003d
> 0x00020003 0x00000049
> 0x00020004 0x00000056
> 0x00020005 0x00000061
> 0x00020006 0x0000006d
> /* Calibration data group 4 */
> 0x00030000 0x00000021
> 0x00030001 0x0000002a
> 0x00030002 0x0000003c
> 0x00030003 0x0000004e
> >;
>
> Shawn
>
> > + big-endian;
> > + #thermal-sensor-cells = <1>;
> > + };
> > +
> > + thermal-zones {
> > + cpu_thermal: cpu-thermal {
> > + polling-delay-passive = <1000>;
> > + polling-delay = <5000>;
> > + thermal-sensors = <&tmu 3>;
> > +
> > + trips {
> > + cpu_alert: cpu-alert {
> > + temperature = <85000>;
> > + hysteresis = <2000>;
> > + type = "passive";
> > + };
> > +
> > + cpu_crit: cpu-crit {
> > + temperature = <95000>;
> > + hysteresis = <2000>;
> > + type = "critical";
> > + };
> > + };
> > +
> > + cooling-maps {
> > + map0 {
> > + trip = <&cpu_alert>;
> > + cooling-device =
> > + <&cpu0
> THERMAL_NO_LIMIT
> > + THERMAL_NO_LIMIT>;
> > + };
> > + };
> > + };
> > + };
> > +
> > dspi: dspi@...0000 {
> > compatible = "fsl,ls1021a-v1.0-dspi";
> > #address-cells = <1>;
> > --
> > 2.1.0.27.g96db324
> >
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