alphascale,acc.txt

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    1 Alphascale Clock Controller
    2 
    3 The ACC (Alphascale Clock Controller) is responsible of choising proper
    4 clock source, setting deviders and clock gates.
    5 
    6 Required properties for the ACC node:
    7  - compatible: must be "alphascale,asm9260-clock-controller"
    8  - reg: must contain the ACC register base and size
    9  - #clock-cells : shall be set to 1.
   10 
   11 Simple one-cell clock specifier format is used, where the only cell is used
   12 as an index of the clock inside the provider.
   13 It is encouraged to use dt-binding for clock index definitions. SoC specific
   14 dt-binding should be included to the device tree descriptor. For example
   15 Alphascale ASM9260:
   16 #include <dt-bindings/clock/alphascale,asm9260.h>
   17 
   18 This binding contains two types of clock providers:
   19  _AHB_ - AHB gate;
   20  _SYS_ - adjustable clock source. Not all peripheral have _SYS_ clock provider.
   21 All clock specific details can be found in the SoC documentation.
   22 CLKID_AHB_ROM           0
   23 CLKID_AHB_RAM           1
   24 CLKID_AHB_GPIO          2
   25 CLKID_AHB_MAC           3
   26 CLKID_AHB_EMI           4
   27 CLKID_AHB_USB0          5
   28 CLKID_AHB_USB1          6
   29 CLKID_AHB_DMA0          7
   30 CLKID_AHB_DMA1          8
   31 CLKID_AHB_UART0         9
   32 CLKID_AHB_UART1         10
   33 CLKID_AHB_UART2         11
   34 CLKID_AHB_UART3         12
   35 CLKID_AHB_UART4         13
   36 CLKID_AHB_UART5         14
   37 CLKID_AHB_UART6         15
   38 CLKID_AHB_UART7         16
   39 CLKID_AHB_UART8         17
   40 CLKID_AHB_UART9         18
   41 CLKID_AHB_I2S0          19
   42 CLKID_AHB_I2C0          20
   43 CLKID_AHB_I2C1          21
   44 CLKID_AHB_SSP0          22
   45 CLKID_AHB_IOCONFIG      23
   46 CLKID_AHB_WDT           24
   47 CLKID_AHB_CAN0          25
   48 CLKID_AHB_CAN1          26
   49 CLKID_AHB_MPWM          27
   50 CLKID_AHB_SPI0          28
   51 CLKID_AHB_SPI1          29
   52 CLKID_AHB_QEI           30
   53 CLKID_AHB_QUADSPI0      31
   54 CLKID_AHB_CAMIF         32
   55 CLKID_AHB_LCDIF         33
   56 CLKID_AHB_TIMER0        34
   57 CLKID_AHB_TIMER1        35
   58 CLKID_AHB_TIMER2        36
   59 CLKID_AHB_TIMER3        37
   60 CLKID_AHB_IRQ           38
   61 CLKID_AHB_RTC           39
   62 CLKID_AHB_NAND          40
   63 CLKID_AHB_ADC0          41
   64 CLKID_AHB_LED           42
   65 CLKID_AHB_DAC0          43
   66 CLKID_AHB_LCD           44
   67 CLKID_AHB_I2S1          45
   68 CLKID_AHB_MAC1          46
   69 
   70 CLKID_SYS_CPU           47
   71 CLKID_SYS_AHB           48
   72 CLKID_SYS_I2S0M         49
   73 CLKID_SYS_I2S0S         50
   74 CLKID_SYS_I2S1M         51
   75 CLKID_SYS_I2S1S         52
   76 CLKID_SYS_UART0         53
   77 CLKID_SYS_UART1         54
   78 CLKID_SYS_UART2         55
   79 CLKID_SYS_UART3         56
   80 CLKID_SYS_UART4         56
   81 CLKID_SYS_UART5         57
   82 CLKID_SYS_UART6         58
   83 CLKID_SYS_UART7         59
   84 CLKID_SYS_UART8         60
   85 CLKID_SYS_UART9         61
   86 CLKID_SYS_SPI0          62
   87 CLKID_SYS_SPI1          63
   88 CLKID_SYS_QUADSPI       64
   89 CLKID_SYS_SSP0          65
   90 CLKID_SYS_NAND          66
   91 CLKID_SYS_TRACE         67
   92 CLKID_SYS_CAMM          68
   93 CLKID_SYS_WDT           69
   94 CLKID_SYS_CLKOUT        70
   95 CLKID_SYS_MAC           71
   96 CLKID_SYS_LCD           72
   97 CLKID_SYS_ADCANA        73
   98 
   99 Example of clock consumer with _SYS_ and _AHB_ sinks.
  100 uart4: serial@80010000 {
  101         compatible = "alphascale,asm9260-uart";
  102         reg = <0x80010000 0x4000>;
  103         clocks = <&acc CLKID_SYS_UART4>, <&acc CLKID_AHB_UART4>;
  104         interrupts = <19>;
  105 };
  106 
  107 Clock consumer with only one, _AHB_ sink.
  108 timer0: timer@80088000 {
  109         compatible = "alphascale,asm9260-timer";
  110         reg = <0x80088000 0x4000>;
  111         clocks = <&acc CLKID_AHB_TIMER0>;
  112         interrupts = <29>;
  113 };
  114

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/clock/alphascale,acc.txt

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sys/contrib/device-tree/Bindings/clock/alphascale,acc.txt