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163 lines
4.9 KiB
163 lines
4.9 KiB
What: /sys/class/tty/console/active |
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Date: Nov 2010 |
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Contact: Kay Sievers <[email protected]> |
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Description: |
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Shows the list of currently configured |
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console devices, like 'tty1 ttyS0'. |
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The last entry in the file is the active |
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device connected to /dev/console. |
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The file supports poll() to detect virtual |
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console switches. |
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What: /sys/class/tty/tty0/active |
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Date: Nov 2010 |
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Contact: Kay Sievers <[email protected]> |
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Description: |
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Shows the currently active virtual console |
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device, like 'tty1'. |
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The file supports poll() to detect virtual |
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console switches. |
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What: /sys/class/tty/ttyS0/uartclk |
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Date: Sep 2012 |
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Contact: Tomas Hlavacek <[email protected]> |
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Description: |
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Shows the current uartclk value associated with the |
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UART port in serial_core, that is bound to TTY like ttyS0. |
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uartclk = 16 * baud_base |
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These sysfs values expose the TIOCGSERIAL interface via |
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sysfs rather than via ioctls. |
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What: /sys/class/tty/ttyS0/type |
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Date: October 2012 |
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Contact: Alan Cox <[email protected]> |
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Description: |
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Shows the current tty type for this port. |
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These sysfs values expose the TIOCGSERIAL interface via |
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sysfs rather than via ioctls. |
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What: /sys/class/tty/ttyS0/line |
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Date: October 2012 |
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Contact: Alan Cox <[email protected]> |
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Description: |
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Shows the current tty line number for this port. |
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These sysfs values expose the TIOCGSERIAL interface via |
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sysfs rather than via ioctls. |
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What: /sys/class/tty/ttyS0/port |
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Date: October 2012 |
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Contact: Alan Cox <[email protected]> |
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Description: |
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Shows the current tty port I/O address for this port. |
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These sysfs values expose the TIOCGSERIAL interface via |
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sysfs rather than via ioctls. |
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What: /sys/class/tty/ttyS0/irq |
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Date: October 2012 |
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Contact: Alan Cox <[email protected]> |
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Description: |
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Shows the current primary interrupt for this port. |
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These sysfs values expose the TIOCGSERIAL interface via |
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sysfs rather than via ioctls. |
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What: /sys/class/tty/ttyS0/flags |
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Date: October 2012 |
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Contact: Alan Cox <[email protected]> |
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Description: |
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Show the tty port status flags for this port. |
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These sysfs values expose the TIOCGSERIAL interface via |
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sysfs rather than via ioctls. |
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What: /sys/class/tty/ttyS0/xmit_fifo_size |
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Date: October 2012 |
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Contact: Alan Cox <[email protected]> |
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Description: |
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Show the transmit FIFO size for this port. |
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These sysfs values expose the TIOCGSERIAL interface via |
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sysfs rather than via ioctls. |
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What: /sys/class/tty/ttyS0/close_delay |
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Date: October 2012 |
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Contact: Alan Cox <[email protected]> |
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Description: |
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Show the closing delay time for this port in ms. |
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These sysfs values expose the TIOCGSERIAL interface via |
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sysfs rather than via ioctls. |
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What: /sys/class/tty/ttyS0/closing_wait |
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Date: October 2012 |
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Contact: Alan Cox <[email protected]> |
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Description: |
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Show the close wait time for this port in ms. |
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These sysfs values expose the TIOCGSERIAL interface via |
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sysfs rather than via ioctls. |
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What: /sys/class/tty/ttyS0/custom_divisor |
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Date: October 2012 |
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Contact: Alan Cox <[email protected]> |
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Description: |
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Show the custom divisor if any that is set on this port. |
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These sysfs values expose the TIOCGSERIAL interface via |
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sysfs rather than via ioctls. |
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What: /sys/class/tty/ttyS0/io_type |
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Date: October 2012 |
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Contact: Alan Cox <[email protected]> |
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Description: |
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Show the I/O type that is to be used with the iomem base |
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address. |
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These sysfs values expose the TIOCGSERIAL interface via |
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sysfs rather than via ioctls. |
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What: /sys/class/tty/ttyS0/iomem_base |
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Date: October 2012 |
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Contact: Alan Cox <[email protected]> |
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Description: |
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The I/O memory base for this port. |
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These sysfs values expose the TIOCGSERIAL interface via |
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sysfs rather than via ioctls. |
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What: /sys/class/tty/ttyS0/iomem_reg_shift |
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Date: October 2012 |
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Contact: Alan Cox <[email protected]> |
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Description: |
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Show the register shift indicating the spacing to be used |
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for accesses on this iomem address. |
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These sysfs values expose the TIOCGSERIAL interface via |
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sysfs rather than via ioctls. |
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What: /sys/class/tty/ttyS0/rx_trig_bytes |
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Date: May 2014 |
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Contact: Yoshihiro YUNOMAE <[email protected]> |
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Description: |
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Shows current RX interrupt trigger bytes or sets the |
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user specified value to change it for the FIFO buffer. |
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Users can show or set this value regardless of opening the |
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serial device file or not. |
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The RX trigger can be set one of four kinds of values for UART |
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serials. When users input a meaning less value to this I/F, |
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the RX trigger is changed to the nearest lower value for the |
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device specification. For example, when user sets 7bytes on |
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16550A, which has 1/4/8/14 bytes trigger, the RX trigger is |
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automatically changed to 4 bytes. |
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What: /sys/class/tty/ttyS0/console |
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Date: February 2020 |
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Contact: Andy Shevchenko <[email protected]> |
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Description: |
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Allows user to detach or attach back the given device as |
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kernel console. It shows and accepts a boolean variable.
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