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/linux-6.14.4/Documentation/devicetree/bindings/serial/
Desp,esp32-uart.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
4 ---
5 $id: http://devicetree.org/schemas/serial/esp,esp32-uart.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: ESP32xx UART controllers
11 - Max Filippov <[email protected]>
14 ESP32 UART controller is a part of the ESP32 SoC.
15 ESP32S3 UART controller is a part of the ESP32S3 SoC.
19 - $ref: serial.yaml#
24 - esp,esp32-uart
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/linux-6.14.4/drivers/tty/serial/
Desp32_uart.c1 // SPDX-License-Identifier: GPL-2.0-or-later
19 #define DRIVER_NAME "esp32-uart"
113 .type = "ESP32 UART",
122 .type = "ESP32S3 UART",
128 .compatible = "esp,esp32-uart",
131 .compatible = "esp,esp32s3-uart",
141 return port->private_data; in port_variant()
146 writel(v, port->membase + reg); in esp32_uart_write()
151 return readl(port->membase + reg); in esp32_uart_read()
158 return (status & port_variant(port)->txfifo_cnt_mask) >> UART_TXFIFO_CNT_SHIFT; in esp32_uart_tx_fifo_cnt()
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DKconfig1 # SPDX-License-Identifier: GPL-2.0
19 comment "Non-8250 serial port support"
26 This selects the ARM(R) AMBA(R) PrimeCell PL010 UART. If you have
37 Say Y here if you wish to use an AMBA PrimeCell UART as the system
53 This selects the ARM(R) AMBA(R) PrimeCell PL011 UART. If you have
65 Say Y here if you wish to use an AMBA PrimeCell UART as the system
89 bool "Early console using RISC-V SBI"
95 Support for early debug console using RISC-V SBI. This enables
101 tristate "BCM1xxx on-chip DUART serial support"
107 the BCM1250 and derived System-On-a-Chip (SOC) devices. Note that
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