Регистры Allwinner H616

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VDDOFF_GATING_SOF_REG
3.13.5. VDD To RTC Isolation Software Control Register - адрес: 0x70001f4 (смещение: 0x01F4)

Часы реального времени RTC: список регистров



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

  KEY_FIELD

Bits 31 : 16
W
0x0

Key Field
This field should be filled with 0x16AA, and then the bit15 can be
configured.


  BIT_15

Bit 15
WAC
0x0

When use vdd_sys to RTC isolation software control, write this bit to 1, it will
only be cleared by resetb release.


  Unused

Bits 14 : 1

  DRAM_CH_PAD_HOLD

Bit 0
R/W
0x0

Hold the pad of DRAM channel
0:not hold
1:hold dram Pad
This bit should be set to 1 before VDD_SYS power off while it should be set
to 0 after the VDD_SYS power on.



Команда U-Boot для чтения регистра

md 70001f4 1



Bit fields structure

typedef union  vddoff_gating_sof_reg
{
  struct
  {
   unsigned dram_ch_pad_hold : 1;
   unsigned unused0 : 14;
   unsigned bit_15 : 1;
   unsigned key_field : 16;
  } b;
   unsigned long w;
} VDDOFF_GATING_SOF_REG
   

Allwinner H616 Manual