This is useful for devicetree documentation, examples, and tests,
where we need to put something for the vendor but we can't use an
actual piece of hardware for some reason.
Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
- Fixes#3981
- Implement UART Polling functions
- Implement UART Interrupt APIs
- Remove dependency on esp32_rom_uart_xxx functions
- Update Device tree with UART addresses and pin config
- Update ESP32 UART KConfig
Notes about implementation:
- Interrupts now defined as a local macros, and should be removed
later on, when interrupts for esp32 are supported in dts
- Threshold interrupts are used for TX/RX
- Reseting FIFOs using _RST bit will corrupt FIFO of UART2 when used for
UART1 and vice-versa, so a generic way is used for all three UARTs
- Old Silicon rev is not supported
Signed-off-by: Mohamed ElShahawi <ExtremeGTX@hotmail.com>
import linux-v5.1:Documentation/devicetree/bindings/vendor-prefixes.txt
Use vendor-prefixes.txt to check vendor prefixes
used in compatible strings and property names.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
