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Binding for TI DaVinci Power Sleep Controller (PSC)
The PSC provides power management, clock gating and reset functionality. It is
primarily used for clocking.
Required properties:
- compatible: shall be one of:
- "ti,da850-psc0" for PSC0 on DA850/OMAP-L138/AM18XX
- "ti,da850-psc1" for PSC1 on DA850/OMAP-L138/AM18XX
- reg: physical base address and size of the controller's register area
- #clock-cells: from common clock binding; shall be set to 1
- #power-domain-cells: from generic power domain binding; shall be set to 1.
- clocks: phandles to clocks corresponding to the clock-names property
- clock-names: list of parent clock names - depends on compatible value
- for "ti,da850-psc0", shall be "pll0_sysclk1", "pll0_sysclk2",
"pll0_sysclk4", "pll0_sysclk6", "async1"
- for "ti,da850-psc1", shall be "pll0_sysclk2", "pll0_sysclk4", "async3"
Optional properties:
- #reset-cells: from reset binding; shall be set to 1 - only applicable when
at least one local domain provides a local reset.
Consumers:
Clock, power domain and reset consumers shall use the local power domain
module ID (LPSC) as the index corresponding to the clock cell. Refer to
the device-specific datasheet to find these numbers. NB: Most local
domains only provide a clock/power domain and not a reset.
Examples:
psc0: clock-controller@10000 {
compatible = "ti,da850-psc0";
reg = <0x10000 0x1000>;
#clock-cells = <1>;
#power-domain-cells = <1>;
#reset-cells = <1>;
clocks = <&pll0_sysclk 1>, <&pll0_sysclk 2>,
<&pll0_sysclk 4>, <&pll0_sysclk 6>, <&async1_clk>;
clock_names = "pll0_sysclk1", "pll0_sysclk2",
"pll0_sysclk4", "pll0_sysclk6", "async1";
};
psc1: clock-controller@227000 {
compatible = "ti,da850-psc1";
reg = <0x227000 0x1000>;
#clock-cells = <1>;
#power-domain-cells = <1>;
clocks = <&pll0_sysclk 2>, <&pll0_sysclk 4>, <&async3_clk>;
clock_names = "pll0_sysclk2", "pll0_sysclk4", "async3";
};
/* consumer */
dsp: dsp@11800000 {
compatible = "ti,da850-dsp";
reg = <0x11800000 0x40000>,
<0x11e00000 0x8000>,
<0x11f00000 0x8000>,
<0x01c14044 0x4>,
<0x01c14174 0x8>;
reg-names = "l2sram", "l1pram", "l1dram", "host1cfg", "chipsig";
interrupt-parent = <&intc>;
interrupts = <28>;
clocks = <&psc0 15>;
power-domains = <&psc0 15>;
resets = <&psc0 15>;
};
Also see:
- Documentation/devicetree/bindings/clock/clock-bindings.txt
- Documentation/devicetree/bindings/power/power-domain.yaml
- Documentation/devicetree/bindings/reset/reset.txt
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