| Message ID | 1461321071-6431-11-git-send-email-pchiu@nvidia.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
Hi Penny, On 22/04/16 11:31, Penny Chiu wrote: > Add clocks, clock-names, and clock-latency into cpu0 node. > These properties will be used by cpufreq driver. > > Signed-off-by: Penny Chiu <pchiu@nvidia.com> > --- > arch/arm64/boot/dts/nvidia/tegra210.dtsi | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi > index 204d9cd..1a85857 100644 > --- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi > +++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi > @@ -782,6 +782,12 @@ > device_type = "cpu"; > compatible = "arm,cortex-a57"; > reg = <0>; > + clocks = <&tegra_car TEGRA210_CLK_CCLK_G>, > + <&tegra_car TEGRA210_CLK_PLL_X>, > + <&tegra_car TEGRA210_CLK_PLL_P_OUT4>, > + <&dfll>; > + clock-names = "cpu_g", "pll_x", "pll_p", "dfll"; > + clock-latency = <300000>; > }; > > cpu@1 { > Can you include a patch with this series to update the binding documentation for the nvidia,tegra124-cpufreq.txt? I think that although there is no specific nvidia,tegra210-cpufreq compatible string the documentation should state that both tegra124 and tegra210 are supported so it is clear. Also I see the above binding no longer includes the "cpu_lp" for tegra210 which I understand we don't use here. However, the binding documentation should reflect this. Having said that, looking at the driver it appears the "cpu_lp" clock is not even used for tegra124. I wonder if we should drop this from the binding documentation and the tegra124.dtsi altogether? What about the "vdd-cpu-supply" property? Don't we need this? Cheers Jon -- To unsubscribe from this list: send the line "unsubscribe linux-clk" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Fri, Apr 22, 2016 at 12:44:21PM +0100, Jon Hunter wrote: > Hi Penny, > > On 22/04/16 11:31, Penny Chiu wrote: > > Add clocks, clock-names, and clock-latency into cpu0 node. > > These properties will be used by cpufreq driver. > > > > Signed-off-by: Penny Chiu <pchiu@nvidia.com> > > --- > > arch/arm64/boot/dts/nvidia/tegra210.dtsi | 6 ++++++ > > 1 file changed, 6 insertions(+) > > > > diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi > > index 204d9cd..1a85857 100644 > > --- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi > > +++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi > > @@ -782,6 +782,12 @@ > > device_type = "cpu"; > > compatible = "arm,cortex-a57"; > > reg = <0>; > > + clocks = <&tegra_car TEGRA210_CLK_CCLK_G>, > > + <&tegra_car TEGRA210_CLK_PLL_X>, > > + <&tegra_car TEGRA210_CLK_PLL_P_OUT4>, > > + <&dfll>; > > + clock-names = "cpu_g", "pll_x", "pll_p", "dfll"; > > + clock-latency = <300000>; > > }; > > > > cpu@1 { > > > > Can you include a patch with this series to update the binding > documentation for the nvidia,tegra124-cpufreq.txt? I think that although > there is no specific nvidia,tegra210-cpufreq compatible string the > documentation should state that both tegra124 and tegra210 are supported > so it is clear. > > Also I see the above binding no longer includes the "cpu_lp" for > tegra210 which I understand we don't use here. However, the binding > documentation should reflect this. Having said that, looking at the > driver it appears the "cpu_lp" clock is not even used for tegra124. I > wonder if we should drop this from the binding documentation and the > tegra124.dtsi altogether? > > What about the "vdd-cpu-supply" property? Don't we need this? For some reason that seems to have moved into the clock@70110000 node. Thierry
On 22/04/16 14:23, Thierry Reding wrote: > * PGP Signed by an unknown key > > On Fri, Apr 22, 2016 at 12:44:21PM +0100, Jon Hunter wrote: >> Hi Penny, >> >> On 22/04/16 11:31, Penny Chiu wrote: >>> Add clocks, clock-names, and clock-latency into cpu0 node. >>> These properties will be used by cpufreq driver. >>> >>> Signed-off-by: Penny Chiu <pchiu@nvidia.com> >>> --- >>> arch/arm64/boot/dts/nvidia/tegra210.dtsi | 6 ++++++ >>> 1 file changed, 6 insertions(+) >>> >>> diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi >>> index 204d9cd..1a85857 100644 >>> --- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi >>> +++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi >>> @@ -782,6 +782,12 @@ >>> device_type = "cpu"; >>> compatible = "arm,cortex-a57"; >>> reg = <0>; >>> + clocks = <&tegra_car TEGRA210_CLK_CCLK_G>, >>> + <&tegra_car TEGRA210_CLK_PLL_X>, >>> + <&tegra_car TEGRA210_CLK_PLL_P_OUT4>, >>> + <&dfll>; >>> + clock-names = "cpu_g", "pll_x", "pll_p", "dfll"; >>> + clock-latency = <300000>; >>> }; >>> >>> cpu@1 { >>> >> >> Can you include a patch with this series to update the binding >> documentation for the nvidia,tegra124-cpufreq.txt? I think that although >> there is no specific nvidia,tegra210-cpufreq compatible string the >> documentation should state that both tegra124 and tegra210 are supported >> so it is clear. >> >> Also I see the above binding no longer includes the "cpu_lp" for >> tegra210 which I understand we don't use here. However, the binding >> documentation should reflect this. Having said that, looking at the >> driver it appears the "cpu_lp" clock is not even used for tegra124. I >> wonder if we should drop this from the binding documentation and the >> tegra124.dtsi altogether? >> >> What about the "vdd-cpu-supply" property? Don't we need this? > > For some reason that seems to have moved into the clock@70110000 node. Yes I saw that. I surprised that the cpufreq driver would probe without this, unless I am missing something ... Jon -- To unsubscribe from this list: send the line "unsubscribe linux-clk" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi index 204d9cd..1a85857 100644 --- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi @@ -782,6 +782,12 @@ device_type = "cpu"; compatible = "arm,cortex-a57"; reg = <0>; + clocks = <&tegra_car TEGRA210_CLK_CCLK_G>, + <&tegra_car TEGRA210_CLK_PLL_X>, + <&tegra_car TEGRA210_CLK_PLL_P_OUT4>, + <&dfll>; + clock-names = "cpu_g", "pll_x", "pll_p", "dfll"; + clock-latency = <300000>; }; cpu@1 {
Add clocks, clock-names, and clock-latency into cpu0 node. These properties will be used by cpufreq driver. Signed-off-by: Penny Chiu <pchiu@nvidia.com> --- arch/arm64/boot/dts/nvidia/tegra210.dtsi | 6 ++++++ 1 file changed, 6 insertions(+)