| Message ID | 20210920181145.19543-6-digetx@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | NVIDIA Tegra power management patches for 5.16 | expand |
On Mon, 20 Sep 2021 21:11:15 +0300, Dmitry Osipenko wrote: > Document sub-nodes which describe Tegra SoC clocks that require a higher > voltage of the core power domain in order to operate properly on a higher > clock rates. Each node contains a phandle to OPP table and power domain. > > The root PLLs and system clocks don't have any specific device dedicated > to them, clock controller is in charge of managing power for them. > > Signed-off-by: Dmitry Osipenko <digetx@gmail.com> > --- > .../bindings/clock/nvidia,tegra20-car.yaml | 37 +++++++++++++++++++ > 1 file changed, 37 insertions(+) > Reviewed-by: Rob Herring <robh@kernel.org>
Quoting Dmitry Osipenko (2021-09-20 11:11:15) > diff --git a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml > index 459d2a525393..f832abb7f11a 100644 > --- a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml > +++ b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml > @@ -42,6 +42,36 @@ properties: > "#reset-cells": > const: 1 > > +patternProperties: > + "^(sclk)|(pll-[cem])$": > + type: object > + properties: > + compatible: > + enum: > + - nvidia,tegra20-sclk > + - nvidia,tegra30-sclk > + - nvidia,tegra30-pllc > + - nvidia,tegra30-plle > + - nvidia,tegra30-pllm > + > + operating-points-v2: true > + > + clocks: > + items: > + - description: node's clock > + > + power-domains: > + maxItems: 1 > + description: phandle to the core SoC power domain Is this done to associate the power domain with a particular clk? And an OPP table with a particular clk? > + > + required: > + - compatible > + - operating-points-v2 > + - clocks > + - power-domains > + > + additionalProperties: false > + > required: > - compatible > - reg
15.10.2021 03:16, Stephen Boyd пишет: > Quoting Dmitry Osipenko (2021-09-20 11:11:15) >> diff --git a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml >> index 459d2a525393..f832abb7f11a 100644 >> --- a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml >> +++ b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml >> @@ -42,6 +42,36 @@ properties: >> "#reset-cells": >> const: 1 >> >> +patternProperties: >> + "^(sclk)|(pll-[cem])$": >> + type: object >> + properties: >> + compatible: >> + enum: >> + - nvidia,tegra20-sclk >> + - nvidia,tegra30-sclk >> + - nvidia,tegra30-pllc >> + - nvidia,tegra30-plle >> + - nvidia,tegra30-pllm >> + >> + operating-points-v2: true >> + >> + clocks: >> + items: >> + - description: node's clock >> + >> + power-domains: >> + maxItems: 1 >> + description: phandle to the core SoC power domain > > Is this done to associate the power domain with a particular clk? And an > OPP table with a particular clk? Yes
Quoting Dmitry Osipenko (2021-10-14 17:43:49) > 15.10.2021 03:16, Stephen Boyd пишет: > > Quoting Dmitry Osipenko (2021-09-20 11:11:15) > >> diff --git a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml > >> index 459d2a525393..f832abb7f11a 100644 > >> --- a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml > >> +++ b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml > >> @@ -42,6 +42,36 @@ properties: > >> "#reset-cells": > >> const: 1 > >> > >> +patternProperties: > >> + "^(sclk)|(pll-[cem])$": > >> + type: object > >> + properties: > >> + compatible: > >> + enum: > >> + - nvidia,tegra20-sclk > >> + - nvidia,tegra30-sclk > >> + - nvidia,tegra30-pllc > >> + - nvidia,tegra30-plle > >> + - nvidia,tegra30-pllm > >> + > >> + operating-points-v2: true > >> + > >> + clocks: > >> + items: > >> + - description: node's clock > >> + > >> + power-domains: > >> + maxItems: 1 > >> + description: phandle to the core SoC power domain > > > > Is this done to associate the power domain with a particular clk? And an > > OPP table with a particular clk? > > Yes > Ok. Can Ulf/Viresh review this patch series?
15.10.2021 03:45, Stephen Boyd пишет: > Quoting Dmitry Osipenko (2021-10-14 17:43:49) >> 15.10.2021 03:16, Stephen Boyd пишет: >>> Quoting Dmitry Osipenko (2021-09-20 11:11:15) >>>> diff --git a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml >>>> index 459d2a525393..f832abb7f11a 100644 >>>> --- a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml >>>> +++ b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml >>>> @@ -42,6 +42,36 @@ properties: >>>> "#reset-cells": >>>> const: 1 >>>> >>>> +patternProperties: >>>> + "^(sclk)|(pll-[cem])$": >>>> + type: object >>>> + properties: >>>> + compatible: >>>> + enum: >>>> + - nvidia,tegra20-sclk >>>> + - nvidia,tegra30-sclk >>>> + - nvidia,tegra30-pllc >>>> + - nvidia,tegra30-plle >>>> + - nvidia,tegra30-pllm >>>> + >>>> + operating-points-v2: true >>>> + >>>> + clocks: >>>> + items: >>>> + - description: node's clock >>>> + >>>> + power-domains: >>>> + maxItems: 1 >>>> + description: phandle to the core SoC power domain >>> >>> Is this done to associate the power domain with a particular clk? And an >>> OPP table with a particular clk? >> >> Yes >> > > Ok. Can Ulf/Viresh review this patch series? They already did, please see v13 [1]. [1] https://lore.kernel.org/lkml/20210926224058.1252-1-digetx@gmail.com/
diff --git a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml index 459d2a525393..f832abb7f11a 100644 --- a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml +++ b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml @@ -42,6 +42,36 @@ properties: "#reset-cells": const: 1 +patternProperties: + "^(sclk)|(pll-[cem])$": + type: object + properties: + compatible: + enum: + - nvidia,tegra20-sclk + - nvidia,tegra30-sclk + - nvidia,tegra30-pllc + - nvidia,tegra30-plle + - nvidia,tegra30-pllm + + operating-points-v2: true + + clocks: + items: + - description: node's clock + + power-domains: + maxItems: 1 + description: phandle to the core SoC power domain + + required: + - compatible + - operating-points-v2 + - clocks + - power-domains + + additionalProperties: false + required: - compatible - reg @@ -59,6 +89,13 @@ examples: reg = <0x60006000 0x1000>; #clock-cells = <1>; #reset-cells = <1>; + + sclk { + compatible = "nvidia,tegra20-sclk"; + operating-points-v2 = <&opp_table>; + clocks = <&tegra_car TEGRA20_CLK_SCLK>; + power-domains = <&domain>; + }; }; usb-controller@c5004000 {
Document sub-nodes which describe Tegra SoC clocks that require a higher voltage of the core power domain in order to operate properly on a higher clock rates. Each node contains a phandle to OPP table and power domain. The root PLLs and system clocks don't have any specific device dedicated to them, clock controller is in charge of managing power for them. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- .../bindings/clock/nvidia,tegra20-car.yaml | 37 +++++++++++++++++++ 1 file changed, 37 insertions(+)