Message ID | 1395649643-9146-5-git-send-email-b.brezillon.dev@gmail.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On 24/03/2014 09:27, Boris BREZILLON : > Add slow clk, and slow oscillators documentation. > > Signed-off-by: Boris BREZILLON <b.brezillon.dev@gmail.com> > --- > .../devicetree/bindings/clock/at91-clock.txt | 72 ++++++++++++++++++++ > 1 file changed, 72 insertions(+) > > diff --git a/Documentation/devicetree/bindings/clock/at91-clock.txt b/Documentation/devicetree/bindings/clock/at91-clock.txt > index 9a7025b..820061c 100644 > --- a/Documentation/devicetree/bindings/clock/at91-clock.txt > +++ b/Documentation/devicetree/bindings/clock/at91-clock.txt > @@ -6,6 +6,16 @@ This binding uses the common clock binding[1]. > > Required properties: > - compatible : shall be one of the following: > + "atmel,at91sam9x5-sckc": > + at91 SCKC (Slow Clock Controller) > + This node contains the slow clock definitions. > + > + "atmel,at91sam9x5-clk-slow-osc": > + at91 slow oscillator > + > + "atmel,at91sam9x5-clk-slow-rc-osc": > + at91 internal slow RC oscillator > + > "atmel,at91rm9200-pmc" or > "atmel,at91sam9g45-pmc" or > "atmel,at91sam9n12-pmc" or > @@ -15,6 +25,11 @@ Required properties: > All at91 specific clocks (clocks defined below) must be child > node of the PMC node. > > + "atmel,at91sam9x5-clk-slow" (under sckc node) > + or > + "atmel,at91sam9260-clk-slow" (under pmc node): > + at91 slow clk > + > "atmel,at91rm9200-clk-main-osc" > "atmel,at91sam9x5-clk-main-rc-osc" > at91 main clk sources > @@ -59,6 +74,63 @@ Required properties: > "atmel,at91sam9x5-clk-utmi": > at91 utmi clock > > +Required properties for SCKC node: > +- reg : defines the IO memory reserved for the SCKC. > +- #size-cells : shall be 0 (reg is used to encode clk id). > +- #address-cells : shall be 1 (reg is used to encode clk id). > + > + > +For example: > + ckc: sckc@fffffe50 { s/ckc/sckc/ ? > + compatible = "atmel,sama5d3-pmc"; > + reg = <0xfffffe50 0x4> > + #size-cells = <0>; > + #address-cells = <1>; > + > + /* put at91 slow clocks here */ > + }; > + > + > +Required properties for internal slow RC oscillator: > +- #clock-cells : from common clock binding; shall be set to 0. > +- clock-frequency : define the internal RC oscillator frequency. > + > +Optional properties: > +- clock-accuracy : define the internal RC oscillator accuracy. > + > +For example: > + slow_rc_osc: slow_rc_osc { > + compatible = "atmel,at91sam9x5-clk-slow-rc-osc"; > + clock-frequency = <32768>; > + clock-accuracy = <50000000>; > + }; > + > +Required properties for slow oscillator: > +- #clock-cells : from common clock binding; shall be set to 0. > +- clocks : shall encode the main osc source clk sources (see atmel datasheet). > + > +Optional properties: > +- atmel,osc-bypass : boolean property. Set this when a clock signal is directly > + provided on XIN. > + > +For example: > + slow_osc: slow_osc { > + compatible = "atmel,at91rm9200-clk-slow-osc"; > + #clock-cells = <0>; > + clocks = <&slow_xtal>; > + }; > + > +Required properties for slow clock: > +- #clock-cells : from common clock binding; shall be set to 0. > +- clocks : shall encode the slow clk sources (see atmel datasheet). > + > +For example: > + clk32k: slck { > + compatible = "atmel,at91sam9x5-clk-slow"; > + #clock-cells = <0>; > + clocks = <&slow_rc_osc &slow_osc>; > + }; > + > Required properties for PMC node: > - reg : defines the IO memory reserved for the PMC. > - #size-cells : shall be 0 (reg is used to encode clk id). >
diff --git a/Documentation/devicetree/bindings/clock/at91-clock.txt b/Documentation/devicetree/bindings/clock/at91-clock.txt index 9a7025b..820061c 100644 --- a/Documentation/devicetree/bindings/clock/at91-clock.txt +++ b/Documentation/devicetree/bindings/clock/at91-clock.txt @@ -6,6 +6,16 @@ This binding uses the common clock binding[1]. Required properties: - compatible : shall be one of the following: + "atmel,at91sam9x5-sckc": + at91 SCKC (Slow Clock Controller) + This node contains the slow clock definitions. + + "atmel,at91sam9x5-clk-slow-osc": + at91 slow oscillator + + "atmel,at91sam9x5-clk-slow-rc-osc": + at91 internal slow RC oscillator + "atmel,at91rm9200-pmc" or "atmel,at91sam9g45-pmc" or "atmel,at91sam9n12-pmc" or @@ -15,6 +25,11 @@ Required properties: All at91 specific clocks (clocks defined below) must be child node of the PMC node. + "atmel,at91sam9x5-clk-slow" (under sckc node) + or + "atmel,at91sam9260-clk-slow" (under pmc node): + at91 slow clk + "atmel,at91rm9200-clk-main-osc" "atmel,at91sam9x5-clk-main-rc-osc" at91 main clk sources @@ -59,6 +74,63 @@ Required properties: "atmel,at91sam9x5-clk-utmi": at91 utmi clock +Required properties for SCKC node: +- reg : defines the IO memory reserved for the SCKC. +- #size-cells : shall be 0 (reg is used to encode clk id). +- #address-cells : shall be 1 (reg is used to encode clk id). + + +For example: + ckc: sckc@fffffe50 { + compatible = "atmel,sama5d3-pmc"; + reg = <0xfffffe50 0x4> + #size-cells = <0>; + #address-cells = <1>; + + /* put at91 slow clocks here */ + }; + + +Required properties for internal slow RC oscillator: +- #clock-cells : from common clock binding; shall be set to 0. +- clock-frequency : define the internal RC oscillator frequency. + +Optional properties: +- clock-accuracy : define the internal RC oscillator accuracy. + +For example: + slow_rc_osc: slow_rc_osc { + compatible = "atmel,at91sam9x5-clk-slow-rc-osc"; + clock-frequency = <32768>; + clock-accuracy = <50000000>; + }; + +Required properties for slow oscillator: +- #clock-cells : from common clock binding; shall be set to 0. +- clocks : shall encode the main osc source clk sources (see atmel datasheet). + +Optional properties: +- atmel,osc-bypass : boolean property. Set this when a clock signal is directly + provided on XIN. + +For example: + slow_osc: slow_osc { + compatible = "atmel,at91rm9200-clk-slow-osc"; + #clock-cells = <0>; + clocks = <&slow_xtal>; + }; + +Required properties for slow clock: +- #clock-cells : from common clock binding; shall be set to 0. +- clocks : shall encode the slow clk sources (see atmel datasheet). + +For example: + clk32k: slck { + compatible = "atmel,at91sam9x5-clk-slow"; + #clock-cells = <0>; + clocks = <&slow_rc_osc &slow_osc>; + }; + Required properties for PMC node: - reg : defines the IO memory reserved for the PMC. - #size-cells : shall be 0 (reg is used to encode clk id).
Add slow clk, and slow oscillators documentation. Signed-off-by: Boris BREZILLON <b.brezillon.dev@gmail.com> --- .../devicetree/bindings/clock/at91-clock.txt | 72 ++++++++++++++++++++ 1 file changed, 72 insertions(+)