From 8cc89a229aac8183ffd4c385de0b6b9543175eff Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Tue, 10 Oct 2023 01:59:24 -0700 Subject: drivers/tty/serial: add driver for the ESP32 UART Add driver for the UART controllers of the Espressif ESP32 and ESP32S3 SoCs. Hardware specification is available at the following URLs: https://www.espressif.com/sites/default/files/documentation/esp32_technical_reference_manual_en.pdf (Chapter 13 UART Controller) https://www.espressif.com/sites/default/files/documentation/esp32-s3_technical_reference_manual_en.pdf (Chapter 26 UART Controller) Signed-off-by: Max Filippov Link: https://lore.kernel.org/r/20231010085926.1021667-4-jcmvbkbc@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/Kconfig | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/tty/serial/Kconfig') diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index bdc568a4ab66..d9ca6b268f01 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -1578,6 +1578,19 @@ config SERIAL_NUVOTON_MA35D1_CONSOLE but you can alter that using a kernel command line option such as "console=ttyNVTx". +config SERIAL_ESP32 + tristate "Espressif ESP32 UART support" + depends on XTENSA_PLATFORM_ESP32 || (COMPILE_TEST && OF) + select SERIAL_CORE + select SERIAL_CORE_CONSOLE + select SERIAL_EARLYCON + help + Driver for the UART controllers of the Espressif ESP32xx SoCs. + When earlycon option is enabled the following kernel command line + snippets may be used: + earlycon=esp32s3uart,mmio32,0x60000000,115200n8,40000000 + earlycon=esp32uart,mmio32,0x3ff40000,115200n8 + endmenu config SERIAL_MCTRL_GPIO -- cgit