| Broadcom BCM2835 CPRMAN clocks |
| |
| This binding uses the common clock binding: |
| Documentation/devicetree/bindings/clock/clock-bindings.txt |
| |
| The CPRMAN clock controller generates clocks in the audio power domain |
| of the BCM2835. There is a level of PLLs deriving from an external |
| oscillator, a level of PLL dividers that produce channels off of the |
| few PLLs, and a level of mostly-generic clock generators sourcing from |
| the PLL channels. Most other hardware components source from the |
| clock generators, but a few (like the ARM or HDMI) will source from |
| the PLL dividers directly. |
| |
| Required properties: |
| - compatible: Should be "brcm,bcm2835-cprman" |
| - #clock-cells: Should be <1>. The permitted clock-specifier values can be |
| found in include/dt-bindings/clock/bcm2835.h |
| - reg: Specifies base physical address and size of the registers |
| - clocks: phandles to the parent clocks used as input to the module, in |
| the following order: |
| |
| - External oscillator |
| - DSI0 byte clock |
| - DSI0 DDR2 clock |
| - DSI0 DDR clock |
| - DSI1 byte clock |
| - DSI1 DDR2 clock |
| - DSI1 DDR clock |
| |
| Only external oscillator is required. The DSI clocks may |
| not be present, in which case their children will be |
| unusable. |
| |
| Example: |
| |
| clk_osc: clock@3 { |
| compatible = "fixed-clock"; |
| reg = <3>; |
| #clock-cells = <0>; |
| clock-output-names = "osc"; |
| clock-frequency = <19200000>; |
| }; |
| |
| clocks: cprman@7e101000 { |
| compatible = "brcm,bcm2835-cprman"; |
| #clock-cells = <1>; |
| reg = <0x7e101000 0x2000>; |
| clocks = <&clk_osc>; |
| }; |
| |
| i2c0: i2c@7e205000 { |
| compatible = "brcm,bcm2835-i2c"; |
| reg = <0x7e205000 0x1000>; |
| interrupts = <2 21>; |
| clocks = <&clocks BCM2835_CLOCK_VPU>; |
| #address-cells = <1>; |
| #size-cells = <0>; |
| }; |