Add device tree binding for the BCM6345's gated clocks. The BCM6345 contains clocks gated with a register. Clocks are indexed by bits in the register and are active high. Most MIPS-based BCM63xx SoCs have a clock gating set of registers, but some have clock gate bits interleaved with other status bits and configurable clocks in the same register. Signed-off-by: Simon Arlott <simon@xxxxxxxxxxx> --- v2: Added clock-indices, clock-output-names (from clock-bindings.txt), these are required properties. v1: Renamed from BCM63xx to BCM6345. .../bindings/clock/brcm,bcm6345-gate-clk.txt | 62 ++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/brcm,bcm6345-gate-clk.txt diff --git a/Documentation/devicetree/bindings/clock/brcm,bcm6345-gate-clk.txt b/Documentation/devicetree/bindings/clock/brcm,bcm6345-gate-clk.txt new file mode 100644 index 0000000..a6e264c --- /dev/null +++ b/Documentation/devicetree/bindings/clock/brcm,bcm6345-gate-clk.txt @@ -0,0 +1,62 @@ +Broadcom BCM6345 clocks + +This binding uses the common clock binding: + Documentation/devicetree/bindings/clock/clock-bindings.txt + +The BCM6345 contains clocks gated with a register. Clocks are indexed +by bits in the register and are active high. Most MIPS-based BCM63xx +SoCs have a clock gating set of registers, but some have clock gate bits +interleaved with other status bits and configurable clocks in the same +register. + +Required properties: +- compatible: Should be "brcm,bcm<soc>-gate-clk", "brcm,bcm6345-gate-clk" +- #clock-cells: Should be <1>. +- regmap: The register map phandle +- offset: Offset in the register map for the clock register (in bytes) +- clocks: The external oscillator clock phandle +- clock-indices: The bits in the register used for gated clocks. +- clock-output-names: Should be a list of strings of clock output signal + names indexed by the clock indices. + +Example: + +periph_clk: periph_clk { + compatible = "brcm,bcm63168-gate-clk", "brcm,bcm6345-gate-clk"; + regmap = <&periph_cntl>; + offset = <0x4>; + + #clock-cells = <1>; + clock-indices = + <1>, <2>, <3>, <4>, <5>, + <6>, <7>, <8>, <9>, <10>, + <11>, <12>, <13>, <14>, <15>, + <16>, <17>, <18>, <19>, <20>, + <27>, <31>; + clock-output-names = + "vdsl_qproc", "vdsl_afe", "vdsl", "mips", "wlan_ocp", + "dect", "fap0", "fap1", "sar", "robosw", + "pcm", "usbd", "usbh", "ipsec", "spi", + "hsspi", "pcie", "phymips", "gmac", "nand", + "tbus", "robosw250"; +}; + +timer_clk: timer_clk { + compatible = "brcm,bcm63168-gate-clk", "brcm,bcm6345-gate-clk"; + regmap = <&timer_cntl>; + offset = <0x4>; + + #clock-cells = <1>; + clock-indices = <17>, <18>; + clock-output-names = "uto_extin", "usb_ref"; +}; + +ehci0: usb@10002500 { + compatible = "brcm,bcm63168-ehci", "brcm,bcm6345-ehci", "generic-ehci"; + reg = <0x10002500 0x100>; + big-endian; + interrupt-parent = <&periph_intc>; + interrupts = <10>; + clocks = <&periph_clk 13>, <&timer_clk 18>; + phys = <&usbh>; +}; -- 2.1.4 -- Simon Arlott -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html