| Message ID | 1405437890-6468-4-git-send-email-pdeschrijver@nvidia.com |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
On Tue, Jul 15, 2014 at 06:24:33PM +0300, Peter De Schrijver wrote: > Tegra132 has almost the same clock structure than Tegra124. This patch > documents the missing clock IDs. > > Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> > --- > .../bindings/clock/nvidia,tegra124-car.txt | 8 +++++--- > 1 files changed, 5 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt b/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt > index ded5d62..28129a9 100644 > --- a/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt > +++ b/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt > @@ -1,4 +1,4 @@ > -NVIDIA Tegra124 Clock And Reset Controller > +NVIDIA Tegra124 and Tegra132 Clock And Reset Controller > > This binding uses the common clock binding: > Documentation/devicetree/bindings/clock/clock-bindings.txt > @@ -7,14 +7,16 @@ The CAR (Clock And Reset) Controller on Tegra is the HW module responsible > for muxing and gating Tegra's clocks, and setting their rates. > > Required properties : > -- compatible : Should be "nvidia,tegra124-car" > +- compatible : Should be "nvidia,tegra124-car" or "nvidia,tegra132-car" > - reg : Should contain CAR registers location and length > - clocks : Should contain phandle and clock specifiers for two clocks: > the 32 KHz "32k_in", and the board-specific oscillator "osc". > - #clock-cells : Should be 1. > In clock consumers, this cell represents the clock ID exposed by the > CAR. The assignments may be found in header file > - <dt-bindings/clock/tegra124-car.h>. > + <dt-bindings/clock/tegra124-car.h>. The following clocks do not exist > + in the nvidia,tegra132-car binding: TEGRA124_CLK_CCLK_G, > + TEGRA124_CLK_CCLK_LP, TEGRA124_CLK_PLL_X and TEGRA124_CLK_PLL_X_OUT0. Perhaps it would be useful to split up the common clocks and the Tegra124-only clocks into separate header files and then provide tegra132-car.h which includes only the ones in common with Tegra124. In other words: tegra124-car-common.h would have all except the ones above, then tegra124-car.h includes tegra124-car-common.h and defines those that are Tegra124-only (the ones you listed above) and tegra132-car.h can include tegra124-car-common.h. That's somewhat extreme, but it has the benefit of giving us compile- time checks as to whether the correct clocks are being used. Thierry
On Wed, Jul 16, 2014 at 09:25:40AM +0200, Thierry Reding wrote: > * PGP Signed by an unknown key > > On Tue, Jul 15, 2014 at 06:24:33PM +0300, Peter De Schrijver wrote: > > Tegra132 has almost the same clock structure than Tegra124. This patch > > documents the missing clock IDs. > > > > Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> > > --- > > .../bindings/clock/nvidia,tegra124-car.txt | 8 +++++--- > > 1 files changed, 5 insertions(+), 3 deletions(-) > > > > diff --git a/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt b/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt > > index ded5d62..28129a9 100644 > > --- a/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt > > +++ b/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt > > @@ -1,4 +1,4 @@ > > -NVIDIA Tegra124 Clock And Reset Controller > > +NVIDIA Tegra124 and Tegra132 Clock And Reset Controller > > > > This binding uses the common clock binding: > > Documentation/devicetree/bindings/clock/clock-bindings.txt > > @@ -7,14 +7,16 @@ The CAR (Clock And Reset) Controller on Tegra is the HW module responsible > > for muxing and gating Tegra's clocks, and setting their rates. > > > > Required properties : > > -- compatible : Should be "nvidia,tegra124-car" > > +- compatible : Should be "nvidia,tegra124-car" or "nvidia,tegra132-car" > > - reg : Should contain CAR registers location and length > > - clocks : Should contain phandle and clock specifiers for two clocks: > > the 32 KHz "32k_in", and the board-specific oscillator "osc". > > - #clock-cells : Should be 1. > > In clock consumers, this cell represents the clock ID exposed by the > > CAR. The assignments may be found in header file > > - <dt-bindings/clock/tegra124-car.h>. > > + <dt-bindings/clock/tegra124-car.h>. The following clocks do not exist > > + in the nvidia,tegra132-car binding: TEGRA124_CLK_CCLK_G, > > + TEGRA124_CLK_CCLK_LP, TEGRA124_CLK_PLL_X and TEGRA124_CLK_PLL_X_OUT0. > > Perhaps it would be useful to split up the common clocks and the > Tegra124-only clocks into separate header files and then provide > tegra132-car.h which includes only the ones in common with Tegra124. > > In other words: tegra124-car-common.h would have all except the ones > above, then tegra124-car.h includes tegra124-car-common.h and defines > those that are Tegra124-only (the ones you listed above) and > tegra132-car.h can include tegra124-car-common.h. > > That's somewhat extreme, but it has the benefit of giving us compile- > time checks as to whether the correct clocks are being used. > Yes. That seems like a good plan. Cheers, Peter. -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" 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/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt b/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt index ded5d62..28129a9 100644 --- a/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt +++ b/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt @@ -1,4 +1,4 @@ -NVIDIA Tegra124 Clock And Reset Controller +NVIDIA Tegra124 and Tegra132 Clock And Reset Controller This binding uses the common clock binding: Documentation/devicetree/bindings/clock/clock-bindings.txt @@ -7,14 +7,16 @@ The CAR (Clock And Reset) Controller on Tegra is the HW module responsible for muxing and gating Tegra's clocks, and setting their rates. Required properties : -- compatible : Should be "nvidia,tegra124-car" +- compatible : Should be "nvidia,tegra124-car" or "nvidia,tegra132-car" - reg : Should contain CAR registers location and length - clocks : Should contain phandle and clock specifiers for two clocks: the 32 KHz "32k_in", and the board-specific oscillator "osc". - #clock-cells : Should be 1. In clock consumers, this cell represents the clock ID exposed by the CAR. The assignments may be found in header file - <dt-bindings/clock/tegra124-car.h>. + <dt-bindings/clock/tegra124-car.h>. The following clocks do not exist + in the nvidia,tegra132-car binding: TEGRA124_CLK_CCLK_G, + TEGRA124_CLK_CCLK_LP, TEGRA124_CLK_PLL_X and TEGRA124_CLK_PLL_X_OUT0. - #reset-cells : Should be 1. In clock consumers, this cell represents the bit number in the CAR's array of CLK_RST_CONTROLLER_RST_DEVICES_* registers.
Tegra132 has almost the same clock structure than Tegra124. This patch documents the missing clock IDs. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> --- .../bindings/clock/nvidia,tegra124-car.txt | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-)