| Message ID | 1405476113-10127-1-git-send-email-huayi.li@csr.com |
|---|---|
| State | Superseded, archived |
| Headers | show |
2014-07-16 10:01 GMT+08:00 Huayi Li <huayi.li@csr.com>: > This patch adds dt-binding document for pwm-sirf. here the controller clock > can't generate PWM signals, so we need seperate clock as signal source. > > Signed-off-by: Huayi Li <huayi.li@csr.com> Reviewed-by: Barry Song <Baohua.Song@csr.com> except that the commit log has not explained enough clearly that every pwm channel can choice one from five clock sources to generate PWM wave. > --- > Documentation/devicetree/bindings/pwm/pwm-sirf.txt | 29 ++++++++++++++++++++++ > 1 file changed, 29 insertions(+) > create mode 100644 Documentation/devicetree/bindings/pwm/pwm-sirf.txt > > diff --git a/Documentation/devicetree/bindings/pwm/pwm-sirf.txt b/Documentation/devicetree/bindings/pwm/pwm-sirf.txt > new file mode 100644 > index 0000000..221e5d9 > --- /dev/null > +++ b/Documentation/devicetree/bindings/pwm/pwm-sirf.txt > @@ -0,0 +1,29 @@ > +SiRF prima2 & atlas6 PWM drivers > + > +Required properties: > +- compatible: "sirf,prima2-pwm" > +- reg: physical base address and length of the controller's registers > +- #pwm-cells: should be 2. See pwm.txt in this directory for a description of > + the cells format. > +- clocks: Must contain an entry for each entry in clock-names. > + See ../clock/prima2-clock.txt for details. > +- clock-names: Must include the following entries: > + of clock sources to generate PWM signal, > + - pwmc: PWM controller clock > + - sigsrc0: source clock 0 for PWM > + - sigsrc1: source clock 1 for PWM > + - sigsrc2: source clock 2 for PWM > + - sigsrc3: source clock 3 for PWM > + - sigsrc4: source clock 4 for PWM > + > +Example: > + > +pwm: pwm@b0130000 { > + compatible = "sirf,prima2-pwm"; > + #pwm-cells = <2>; > + reg = <0xb0130000 0x10000>; > + clocks = <&clks 21>, <&clks 1>, <&clks 2>, > + <&clks 3>, <&clks 0>, <&clks 4>; > + clock-names = "pwmc", "sigsrc0", "sigsrc1", > + "sigsrc2", "sigsrc3", "sigsrc4"; > +}; > -- > 1.9.3 > -barry -- To unsubscribe from this list: send the line "unsubscribe devicetree" 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/pwm/pwm-sirf.txt b/Documentation/devicetree/bindings/pwm/pwm-sirf.txt new file mode 100644 index 0000000..221e5d9 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/pwm-sirf.txt @@ -0,0 +1,29 @@ +SiRF prima2 & atlas6 PWM drivers + +Required properties: +- compatible: "sirf,prima2-pwm" +- reg: physical base address and length of the controller's registers +- #pwm-cells: should be 2. See pwm.txt in this directory for a description of + the cells format. +- clocks: Must contain an entry for each entry in clock-names. + See ../clock/prima2-clock.txt for details. +- clock-names: Must include the following entries: + of clock sources to generate PWM signal, + - pwmc: PWM controller clock + - sigsrc0: source clock 0 for PWM + - sigsrc1: source clock 1 for PWM + - sigsrc2: source clock 2 for PWM + - sigsrc3: source clock 3 for PWM + - sigsrc4: source clock 4 for PWM + +Example: + +pwm: pwm@b0130000 { + compatible = "sirf,prima2-pwm"; + #pwm-cells = <2>; + reg = <0xb0130000 0x10000>; + clocks = <&clks 21>, <&clks 1>, <&clks 2>, + <&clks 3>, <&clks 0>, <&clks 4>; + clock-names = "pwmc", "sigsrc0", "sigsrc1", + "sigsrc2", "sigsrc3", "sigsrc4"; +};
This patch adds dt-binding document for pwm-sirf. here the controller clock can't generate PWM signals, so we need seperate clock as signal source. Signed-off-by: Huayi Li <huayi.li@csr.com> --- Documentation/devicetree/bindings/pwm/pwm-sirf.txt | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/pwm/pwm-sirf.txt