stm32-data/data/registers/gfxmmu_v2.yaml

block/GFXMMU:
  description: GFXMMU.
  items:
  - name: CR
    description: GFXMMU configuration register.
    byte_offset: 0
    fieldset: CR
  - name: SR
    description: GFXMMU status register.
    byte_offset: 4
    access: Read
    fieldset: SR
  - name: FCR
    description: GFXMMU flag clear register.
    byte_offset: 8
    access: Write
    fieldset: FCR
  - name: CCR
    description: GFXMMU cache control register.
    byte_offset: 12
    fieldset: CCR
  - name: DVR
    description: GFXMMU default value register.
    byte_offset: 16
    fieldset: DVR
  - name: BCR
    description: GFXMMU buffer 0 configuration register.
    array:
      len: 4
      stride: 4
    byte_offset: 32
    fieldset: BCR
  - name: LUTL
    description: GFXMMU LUT entry 0 low.
    array:
      len: 1024
      stride: 8
    byte_offset: 4096
    fieldset: LUTL
  - name: LUTH
    description: GFXMMU LUT entry 0 high.
    array:
      len: 1024
      stride: 8
    byte_offset: 4100
    fieldset: LUTH
fieldset/BCR:
  description: GFXMMU buffer configuration register.
  fields:
  - name: PBO
    description: Physical buffer offset. Offset of the physical buffer.
    bit_offset: 4
    bit_size: 19
  - name: PBBA
    description: Physical buffer base address. Base address MSB of the physical buffer.
    bit_offset: 23
    bit_size: 9
fieldset/CCR:
  description: GFXMMU cache control register.
  fields:
  - name: FF
    description: Force flush. When set, the cache entries are flushed. This bit is reset by hardware when the flushing is complete. Write 0 has no effect.
    bit_offset: 0
    bit_size: 1
  - name: FI
    description: Force invalidate. When set, the cache entries are invalidated. This bit is reset by hardware when the invalidation is complete. Write 0 has no effect.
    bit_offset: 1
    bit_size: 1
fieldset/CR:
  description: GFXMMU configuration register.
  fields:
  - name: BOIE
    description: Buffer overflow interrupt enable. This bit enables the buffer 0 overflow interrupt.
    bit_offset: 0
    bit_size: 1
    array:
      len: 4
      stride: 1
  - name: AMEIE
    description: AHB master error interrupt enable. This bit enables the AHB master error interrupt.
    bit_offset: 4
    bit_size: 1
  - name: BM
    description: 192 Block mode. This bit defines the number of blocks per line.
    bit_offset: 6
    bit_size: 1
    array:
      len: 1
      stride: 0
    enum: BM192
  - name: CE
    description: Cache enable. This bit enables the cache unit.
    bit_offset: 7
    bit_size: 1
  - name: CL
    description: Cache lock. This bit lock the cache onto the buffer defined in the CLB field.
    bit_offset: 8
    bit_size: 1
  - name: CLB
    description: Cache lock buffer. This field select the buffer on which the cache is locked.
    bit_offset: 9
    bit_size: 2
    enum: CLB
  - name: FC
    description: Force caching. This bit force the caching into the cache regardless of the MPU attributes.  The cache must be enable (CE bit set).
    bit_offset: 11
    bit_size: 1
  - name: PD
    description: Prefetch disable. This bit disables the prefetch of the cache.
    bit_offset: 12
    bit_size: 1
  - name: OC
    description: Outter cachability. This bit configure the cachability of an access generated by the GFXMMU cache.
    bit_offset: 16
    bit_size: 1
  - name: OB
    description: Outter bufferability. This bit configure the bufferability of an access generated by the GFXMMU cache.
    bit_offset: 17
    bit_size: 1
fieldset/DVR:
  description: GFXMMU default value register.
  fields:
  - name: DV
    description: Default value. This field indicates the default 32-bit value which is returned when a master accesses a virtual memory location not physically mapped.
    bit_offset: 0
    bit_size: 32
fieldset/FCR:
  description: GFXMMU flag clear register.
  fields:
  - name: CBOF
    description: Clear buffer overflow flag. Writing 1 clears the buffer 0 overflow flag in the GFXMMU_SR register.
    bit_offset: 0
    bit_size: 1
    array:
      len: 4
      stride: 1
  - name: CAMEF
    description: Clear AHB master error flag. Writing 1 clears the AHB master error flag in the GFXMMU_SR register.
    bit_offset: 4
    bit_size: 1
fieldset/LUTH:
  description: GFXMMU LUT entry high.
  fields:
  - name: LO
    description: Line offset. Line offset of line number x (i.e. offset of block 0 of line x).
    bit_offset: 4
    bit_size: 18
fieldset/LUTL:
  description: GFXMMU LUT entry low.
  fields:
  - name: EN
    description: Line enable.
    bit_offset: 0
    bit_size: 1
  - name: FVB
    description: First Valid Block. Number of the first valid block of line number x.
    bit_offset: 8
    bit_size: 8
  - name: LVB
    description: Last Valid Block. Number of the last valid block of line number X.
    bit_offset: 16
    bit_size: 8
fieldset/SR:
  description: GFXMMU status register.
  fields:
  - name: BOF
    description: Buffer overflow flag. This bit is set when an overflow occurs during the offset calculation of the buffer 0. It is cleared by writing 1 to CB0OF.
    bit_offset: 0
    bit_size: 1
    array:
      len: 4
      stride: 1
  - name: AMEF
    description: AHB master error flag. This bit is set when an AHB error happens during a transaction. It is cleared by writing 1 to CAMEF.
    bit_offset: 4
    bit_size: 1
enum/BM192:
  bit_size: 1
  variants:
  - name: 256BlocksPerLine
    description: 256 blocks per line.
    value: 0
  - name: 192BlocksPerLine
    description: 192 blocks per line.
    value: 1
enum/CLB:
  bit_size: 2
  variants:
  - name: LockedOnBuffer0
    description: Cache locked on buffer 0.
    value: 0
  - name: LockedOnBuffer1
    description: Cache locked on buffer 1.
    value: 1
  - name: LockedOnBuffer2
    description: Cache locked on buffer 2.
    value: 2
  - name: LockedOnBuffer3
    description: Cache locked on buffer 3.
    value: 3