Регистры Allwinner H616

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MBUS_CFG_REG
3.3.4. MBUS Configuration Register - адрес: 0x3001540 (смещение: 0x0540)

Контроллер синхрогенератора: список регистров



31 ||||||||||||||||| 16
15 ||||||||||||||||| 00

  CLK_GATING.

Bit 31
R/W
0x1

Gating Special Clock
0: Clock is OFF
1: Clock is ON
MBUS CLK = Clock Source/M.


  MBUS_RST.

Bit 30
R/W
0x1

MBUS Reset
0: Assert
1: De-assert


  Unused

Bits 29 : 26

  CLK_SRC_SEL.

Bits 25 : 24
R/W
0x0

Clock Source Select
00: OSC24M
01: PLL_PERI0(2X)
10: PLL_DDR0
11: PLL_DDR1


  Unused

Bits 23 : 3

  FACTOR_M

Bits 2 : 0
R/W
0x0

Factor M.(M = FACTOR_M +1)
FACTOR_M is from 0 to 7.



Команда U-Boot для чтения регистра

md 3001540 1



Bit fields structure

typedef union  mbus_cfg_reg
{
  struct
  {
   unsigned factor_m : 3;
   unsigned unused0 : 21;
   unsigned clk_src_sel. : 2;
   unsigned unused1 : 4;
   unsigned mbus_rst. : 1;
   unsigned clk_gating. : 1;
  } b;
   unsigned long w;
} MBUS_CFG_REG
   

Allwinner H616 Manual