SPI Registers: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 62: | Line 62: | ||
| Number of pending bytes in the write the FIFO (maximum = 0x7F) | | Number of pending bytes in the write the FIFO (maximum = 0x7F) | ||
|} | |} | ||
== Notes == | |||
Registers seem to be very similar to https://github.com/torvalds/linux/blob/master/drivers/spi/spi-sun4i.c | |||
Revision as of 17:34, 16 January 2021
MMIO Interfaces
| Name | Physical address |
|---|---|
| SceSpi0Reg (SceSyscon) | 0xE0A00000 |
| SceSpi1Reg (SceMotionDev) | 0xE0A10000 |
| SceSpi2Reg (SceOled, SceLcd) | 0xE0A20000 |
Registers
| Offset | Size | Description |
|---|---|---|
| 0x00 | 4 | Read FIFO |
| 0x04 | 4 | Write FIFO |
| 0x08 | 4 | Configuration |
| 0x0C | 4 | Interrupt control? |
| 0x10 | 4 | Start transfer (write 0b1), cancel transfer(write 0b0), transfer busy (reads bit0 = 0)? |
| 0x14 | 4 | ?? |
| 0x18 | 4 | Start transfer (bit 0 or 1), transfer direction (bit 0 or 1)? |
| 0x24 | 4 | Flags? |
| 0x28 | 4 | Number of available bytes to read from the FIFO |
| 0x2C | 4 | Number of pending bytes in the write the FIFO (maximum = 0x7F) |
Notes
Registers seem to be very similar to https://github.com/torvalds/linux/blob/master/drivers/spi/spi-sun4i.c