0001 Broadcom BCM2835 CPRMAN clocks
0002
0003 This binding uses the common clock binding:
0004 Documentation/devicetree/bindings/clock/clock-bindings.txt
0005
0006 The CPRMAN clock controller generates clocks in the audio power domain
0007 of the BCM2835. There is a level of PLLs deriving from an external
0008 oscillator, a level of PLL dividers that produce channels off of the
0009 few PLLs, and a level of mostly-generic clock generators sourcing from
0010 the PLL channels. Most other hardware components source from the
0011 clock generators, but a few (like the ARM or HDMI) will source from
0012 the PLL dividers directly.
0013
0014 Required properties:
0015 - compatible: should be one of the following,
0016 "brcm,bcm2711-cprman"
0017 "brcm,bcm2835-cprman"
0018 - #clock-cells: Should be <1>. The permitted clock-specifier values can be
0019 found in include/dt-bindings/clock/bcm2835.h
0020 - reg: Specifies base physical address and size of the registers
0021 - clocks: phandles to the parent clocks used as input to the module, in
0022 the following order:
0023
0024 - External oscillator
0025 - DSI0 byte clock
0026 - DSI0 DDR2 clock
0027 - DSI0 DDR clock
0028 - DSI1 byte clock
0029 - DSI1 DDR2 clock
0030 - DSI1 DDR clock
0031
0032 Only external oscillator is required. The DSI clocks may
0033 not be present, in which case their children will be
0034 unusable.
0035
0036 Example:
0037
0038 clk_osc: clock@3 {
0039 compatible = "fixed-clock";
0040 reg = <3>;
0041 #clock-cells = <0>;
0042 clock-output-names = "osc";
0043 clock-frequency = <19200000>;
0044 };
0045
0046 clocks: cprman@7e101000 {
0047 compatible = "brcm,bcm2835-cprman";
0048 #clock-cells = <1>;
0049 reg = <0x7e101000 0x2000>;
0050 clocks = <&clk_osc>;
0051 };
0052
0053 i2c0: i2c@7e205000 {
0054 compatible = "brcm,bcm2835-i2c";
0055 reg = <0x7e205000 0x1000>;
0056 interrupts = <2 21>;
0057 clocks = <&clocks BCM2835_CLOCK_VPU>;
0058 #address-cells = <1>;
0059 #size-cells = <0>;
0060 };
