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| -rw-r--r-- | Documentation/devicetree/bindings/rtc/dw-apb.txt | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/rtc/dw-apb.txt b/Documentation/devicetree/bindings/rtc/dw-apb.txt new file mode 100644 index 000000000..c703d51ab --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/dw-apb.txt @@ -0,0 +1,32 @@ +* Designware APB timer + +Required properties: +- compatible: One of: + "snps,dw-apb-timer" + "snps,dw-apb-timer-sp" <DEPRECATED> + "snps,dw-apb-timer-osc" <DEPRECATED> +- reg: physical base address of the controller and length of memory mapped + region. +- interrupts: IRQ line for the timer. +- either clocks+clock-names or clock-frequency properties + +Optional properties: +- clocks : list of clock specifiers, corresponding to entries in + the clock-names property; +- clock-names : should contain "timer" and "pclk" entries, matching entries + in the clocks property. +- clock-frequency: The frequency in HZ of the timer. +- clock-freq: For backwards compatibility with picoxcell + +If using the clock specifiers, the pclk clock is optional, as not all +systems may use one. + + +Example: + timer@ffe00000 { + compatible = "snps,dw-apb-timer"; + interrupts = <0 170 4>; + reg = <0xffe00000 0x1000>; + clocks = <&timer_clk>, <&timer_pclk>; + clock-names = "timer", "pclk"; + }; |