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Docs: S32K1XX FlexIO emulated I2C documentation

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Peter van der Perk 2024-07-15 09:54:41 +02:00 committed by Alan Carvalho de Assis
parent f03842e0ec
commit 55d711d214
1 changed files with 11 additions and 2 deletions
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13
Documentation/platforms/arm/s32k1xx/index.rst
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@ -39,7 +39,7 @@ eDMA No
EEPROM Yes EEPROM emulated by FlexRAM EEPROM Yes EEPROM emulated by FlexRAM
ENET Yes ENET Yes
FlexCAN Yes SocketCAN-compatible FlexCAN Yes SocketCAN-compatible
FlexIO No FlexIO Yes Emulated I2C Master driver
FTM Yes PWM driver only FTM Yes PWM driver only
GPIO Yes GPIO Yes
LPI2C Yes I2C Master and Slave LPI2C Yes I2C Master and Slave
@ -84,7 +84,16 @@ The S32K1XX family has up to 3x FlexCAN modules (which may not all have CAN FD s
FlexIO FlexIO
------ ------
A configurable module providing a range of functionality like emulation of a variety of serial/parallel communication protocols, flexible 16-bit timers or programmable logic blocks. No driver available. A configurable module providing a range of functionality like emulation of a variety of serial/parallel communication protocols, flexible 16-bit timers or programmable logic blocks.
The ``s32k1xx_flexio_i2c.c`` driver implements an emulated I2C master using FlexIO.
Albeit the current implementation has some limitations:
* Max I2C speed of 400KHz
* Max transfer of 12 bytes (Could be extended by utilizing EDMA)
* No abort on NACK reception, shifter simplies continues on
* No multi-master support
* No restart support
FTM FTM
--- ---