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Date: Tue, 3 Jan 2017 03:49:33 +0000
From: Troy Jia <hongtao.jia@....com>
To: Shawn Guo <shawnguo@...nel.org>
CC: "Y.T. Tang" <yuantian.tang@....com>,
"rui.zhang@...el.com" <rui.zhang@...el.com>,
"edubezval@...il.com" <edubezval@...il.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 1/2] arm64:dt:ls1046a: Add TMU device tree support for
LS1046A
Add Yuantian who is the owner of this patch set since next week.
> -----Original Message-----
> From: Shawn Guo [mailto:shawnguo@...nel.org]
> Sent: Monday, January 02, 2017 2:25 PM
> To: Troy Jia <hongtao.jia@....com>
> Cc: rui.zhang@...el.com; edubezval@...il.com; robh+dt@...nel.org; Scott Wood
> <scott.wood@....com>; devicetree@...r.kernel.org; linux-
> kernel@...r.kernel.org; linux-arm-kernel@...ts.infradead.org
> Subject: Re: [PATCH 1/2] arm64:dt:ls1046a: Add TMU device tree support for
> LS1046A
>
> On Thu, Dec 08, 2016 at 11:28:25AM +0800, Jia Hongtao wrote:
> > Also add nodes and properties for thermal management support.
> >
> > Signed-off-by: Jia Hongtao <hongtao.jia@....com>
>
> "arm64: dts: ls1046a: ..." for subject prefix please. Also, since we have ls1046a in
> prefix, the 'for LS1046A' is not needed.
Thanks. I will fix it.
>
> > ---
> > arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi | 79
> > ++++++++++++++++++++++++++
> > 1 file changed, 79 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> > b/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> > index 38806ca..40604e9 100644
> > --- a/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> > @@ -45,6 +45,8 @@
> > */
> >
> > #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +#include <dt-bindings/thermal/thermal.h>
> > +
>
> Unneeded newline.
Got it.
>
> >
> > / {
> > compatible = "fsl,ls1046a";
> > @@ -67,6 +69,7 @@
> > clocks = <&clockgen 1 0>;
> > next-level-cache = <&l2>;
> > cpu-idle-states = <&CPU_PH20>;
> > + #cooling-cells = <2>;
> > };
> >
> > cpu1: cpu@1 {
> > @@ -279,6 +282,82 @@
> > 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 = <0x00000000 0x00000026
> > + 0x00000001 0x0000002d
> > + 0x00000002 0x00000032
> > + 0x00000003 0x00000039
> > + 0x00000004 0x0000003f
> > + 0x00000005 0x00000046
> > + 0x00000006 0x0000004d
> > + 0x00000007 0x00000054
> > + 0x00000008 0x0000005a
> > + 0x00000009 0x00000061
> > + 0x0000000a 0x0000006a
> > + 0x0000000b 0x00000071
> > +
>
> Instead of a newline, can we have a single line comment here to tell how these
> calibration data is grouped?
Each group represent one temperature range. It's a good idea to add comment here.
Could I just add one comment like below to clarify all four groups?
/* Each calibration data group represent one temperature range. There are four ranges in total */
>
> > + 0x00010000 0x00000025
> > + 0x00010001 0x0000002c
> > + 0x00010002 0x00000035
> > + 0x00010003 0x0000003d
> > + 0x00010004 0x00000045
> > + 0x00010005 0x0000004e
> > + 0x00010006 0x00000057
> > + 0x00010007 0x00000061
> > + 0x00010008 0x0000006b
> > + 0x00010009 0x00000076
> > +
> > + 0x00020000 0x00000029
> > + 0x00020001 0x00000033
> > + 0x00020002 0x0000003d
> > + 0x00020003 0x00000049
> > + 0x00020004 0x00000056
> > + 0x00020005 0x00000061
> > + 0x00020006 0x0000006d
> > +
> > + 0x00030000 0x00000021
> > + 0x00030001 0x0000002a
> > + 0x00030002 0x0000003c
> > + 0x00030003 0x0000004e>;
> > + big-endian;
> > + #thermal-sensor-cells = <1>;
> > + };
> > +
> > + thermal-zones {
> > + cpu_thermal: cpu-thermal {
> > + polling-delay-passive = <1000>;
> > + polling-delay = <5000>;
> > +
>
> We usually do not have newline between properties but nodes, or between
> property list and child node.
I just follow the style of thermal binding of
Documentation/devicetree/bindings/thermal/thermal.txt.
>
> > + thermal-sensors = <&tmu 3>;
> > +
> > + trips {
> > + cpu_alert: cpu-alert {
> > + temperature = <85000>;
> > + hysteresis = <2000>;
> > + type = "passive";
> > + };
>
> Have a newline here.
Also follow the thermal binding.
-Hongtao.
>
> > + 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
> >
> >
> > _______________________________________________
> > linux-arm-kernel mailing list
> > linux-arm-kernel@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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