SPI Registers: Difference between revisions
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| Number of pending bytes in the write the FIFO (maximum = 0x7F) | | Number of pending bytes in the write the FIFO (maximum = 0x7F) | ||
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== 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