| Message ID | 20190625164733.11091-5-jorge.ramirez-ortiz@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Support CPU frequency scaling on QCS404 | expand |
On Tue 25 Jun 09:47 PDT 2019, Jorge Ramirez-Ortiz wrote: > When the APCS clock is registered (platform dependent), it retrieves > its parent names from hardcoded values in the driver. > > The following commit allows the DT node to provide such clock names to > the platform data based clock driver therefore avoiding having to > explicitly embed those names in the clock driver source code. > > Co-developed-by: Niklas Cassel <niklas.cassel@linaro.org> > Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org> > Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org> > Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> > --- > .../mailbox/qcom,apcs-kpss-global.txt | 24 ++++++++++++++++--- > 1 file changed, 21 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt b/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt > index 1232fc9fc709..b69310322b09 100644 > --- a/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt > +++ b/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt > @@ -18,10 +18,11 @@ platforms. > Usage: required > Value type: <prop-encoded-array> > Definition: must specify the base address and size of the global block > + > - clocks: > - Usage: required if #clocks-cells property is present > - Value type: <phandle> > - Definition: phandle to the input PLL, which feeds the APCS mux/divider > + Usage: required if #clock-names property is present > + Value type: <phandle array> > + Definition: phandles to the two parent clocks of the clock driver. > > - #mbox-cells: > Usage: required > @@ -33,6 +34,12 @@ platforms. > Value type: <u32> > Definition: as described in clock.txt, must be 0 > > +- clock-names: > + Usage: required if the platform data based clock driver needs to > + retrieve the parent clock names from device tree. > + This will requires two mandatory clocks to be defined. > + Value type: <string-array> > + Definition: must be "aux" and "pll" > > = EXAMPLE > The following example describes the APCS HMSS found in MSM8996 and part of the > @@ -65,3 +72,14 @@ Below is another example of the APCS binding on MSM8916 platforms: > clocks = <&a53pll>; > #clock-cells = <0>; > }; > + > +Below is another example of the APCS binding on QCS404 platforms: > + > + apcs_glb: mailbox@b011000 { > + compatible = "qcom,qcs404-apcs-apps-global", "syscon"; > + reg = <0x0b011000 0x1000>; > + #mbox-cells = <1>; > + clocks = <&gcc GCC_GPLL0_AO_OUT_MAIN>, <&apcs_hfpll>; > + clock-names = "aux", "pll"; > + #clock-cells = <0>; > + }; > -- > 2.21.0 >
diff --git a/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt b/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt index 1232fc9fc709..b69310322b09 100644 --- a/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt +++ b/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt @@ -18,10 +18,11 @@ platforms. Usage: required Value type: <prop-encoded-array> Definition: must specify the base address and size of the global block + - clocks: - Usage: required if #clocks-cells property is present - Value type: <phandle> - Definition: phandle to the input PLL, which feeds the APCS mux/divider + Usage: required if #clock-names property is present + Value type: <phandle array> + Definition: phandles to the two parent clocks of the clock driver. - #mbox-cells: Usage: required @@ -33,6 +34,12 @@ platforms. Value type: <u32> Definition: as described in clock.txt, must be 0 +- clock-names: + Usage: required if the platform data based clock driver needs to + retrieve the parent clock names from device tree. + This will requires two mandatory clocks to be defined. + Value type: <string-array> + Definition: must be "aux" and "pll" = EXAMPLE The following example describes the APCS HMSS found in MSM8996 and part of the @@ -65,3 +72,14 @@ Below is another example of the APCS binding on MSM8916 platforms: clocks = <&a53pll>; #clock-cells = <0>; }; + +Below is another example of the APCS binding on QCS404 platforms: + + apcs_glb: mailbox@b011000 { + compatible = "qcom,qcs404-apcs-apps-global", "syscon"; + reg = <0x0b011000 0x1000>; + #mbox-cells = <1>; + clocks = <&gcc GCC_GPLL0_AO_OUT_MAIN>, <&apcs_hfpll>; + clock-names = "aux", "pll"; + #clock-cells = <0>; + };