Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.txt

   1 Broadcom BCM2835 CPRMAN clocks
   2
   3 This binding uses the common clock binding:
   4     Documentation/devicetree/bindings/clock/clock-bindings.txt
   5
   6 The CPRMAN clock controller generates clocks in the audio power domain
   7 of the BCM2835.  There is a level of PLLs deriving from an external
   8 oscillator, a level of PLL dividers that produce channels off of the
   9 few PLLs, and a level of mostly-generic clock generators sourcing from
  10 the PLL channels.  Most other hardware components source from the
  11 clock generators, but a few (like the ARM or HDMI) will source from
  12 the PLL dividers directly.
  13
  14 Required properties:
  15 - compatible:   Should be "brcm,bcm2835-cprman"
  16 - #clock-cells: Should be <1>. The permitted clock-specifier values can be
  17                   found in include/dt-bindings/clock/bcm2835.h
  18 - reg:          Specifies base physical address and size of the registers
  19 - clocks:       The external oscillator clock phandle
  20
  21 Example:
  22
  23         clk_osc: clock@3 {
  24                 compatible = "fixed-clock";
  25                 reg = <3>;
  26                 #clock-cells = <0>;
  27                 clock-output-names = "osc";
  28                 clock-frequency = <19200000>;
  29         };
  30
  31         clocks: cprman@7e101000 {
  32                 compatible = "brcm,bcm2835-cprman";
  33                 #clock-cells = <1>;
  34                 reg = <0x7e101000 0x2000>;
  35                 clocks = <&clk_osc>;
  36         };
  37
  38         i2c0: i2c@7e205000 {
  39                 compatible = "brcm,bcm2835-i2c";
  40                 reg = <0x7e205000 0x1000>;
  41                 interrupts = <2 21>;
  42                 clocks = <&clocks BCM2835_CLOCK_VPU>;
  43                 #address-cells = <1>;
  44                 #size-cells = <0>;
  45         };