FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/clock/ux500.txt

     Clock bindings for ST-Ericsson Ux500 clocks
     
     Required properties :
     - compatible : shall contain only one of the following:
       "stericsson,u8500-clks"
       "stericsson,u8540-clks"
       "stericsson,u9540-clks"
     - reg : shall contain base register location and length for
       CLKRST1, 2, 3, 5, and 6 in an array. Note the absence of
      CLKRST4, which does not exist.
    
    Required subnodes:
    - prcmu-clock: a subnode with one clock cell for PRCMU (power,
      reset, control unit) clocks. The cell indicates which PRCMU
      clock in the prcmu-clock node the consumer wants to use.
    - prcc-periph-clock: a subnode with two clock cells for
      PRCC (programmable reset- and clock controller) peripheral clocks.
      The first cell indicates which PRCC block the consumer
      wants to use, possible values are 1, 2, 3, 5, 6. The second
      cell indicates which clock inside the PRCC block it wants,
      possible values are 0 thru 31.
    - prcc-kernel-clock: a subnode with two clock cells for
      PRCC (programmable reset- and clock controller) kernel clocks
      The first cell indicates which PRCC block the consumer
      wants to use, possible values are 1, 2, 3, 5, 6. The second
      cell indicates which clock inside the PRCC block it wants,
      possible values are 0 thru 31.
    - rtc32k-clock: a subnode with zero clock cells for the 32kHz
      RTC clock.
    - smp-twd-clock: a subnode for the ARM SMP Timer Watchdog cluster
      with zero clock cells.
    
    Example:
    
    clocks {
            compatible = "stericsson,u8500-clks";
            /*
             * Registers for the CLKRST block on peripheral
             * groups 1, 2, 3, 5, 6,
             */
            reg = <0x8012f000 0x1000>, <0x8011f000 0x1000>,
                <0x8000f000 0x1000>, <0xa03ff000 0x1000>,
                <0xa03cf000 0x1000>;
    
            prcmu_clk: prcmu-clock {
                    #clock-cells = <1>;
            };
    
            prcc_pclk: prcc-periph-clock {
                    #clock-cells = <2>;
            };
    
            prcc_kclk: prcc-kernel-clock {
                    #clock-cells = <2>;
            };
    
            rtc_clk: rtc32k-clock {
                    #clock-cells = <0>;
            };
    
            smp_twd_clk: smp-twd-clock {
                    #clock-cells = <0>;
            };
    };

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