Public bug reported: Support Intel Atom (Baytrail-I) HS-UART serdev slaves over tty
On systems using Intel Atom (Baytrail-I) SoC's, slave devices connected on HSUART1/2 ports are described by the ACPI BIOS as virtual hardware using HID's INT3511/INT3512 [1]. As a consequence, HW manufacturers have complete freedom to install any devices on-board as long as they can be accessed over serial tty interface. Once such device is Dell Edge 3002 IoT Gateway which sports ZigBee & GPS devices on the HS-UART ports 1 & 2 respectively. Post 4.15, with CONFIG_SERIAL_DEV_BUS=y, serdev port controller driver handles the enumeration for the slaves connected on these ports. Also, /dev/ttySx device nodes for these ports are no longer exposed to the userspace. Please don't triage, this bug is for tracking purposes only. ** Affects: linux-oem (Ubuntu) Importance: Critical Status: Confirmed ** Description changed: Support Intel Atom (Baytrail-I) HS-UART serdev slaves over tty + On systems using Intel Atom (Baytrail-I) SoC's, slave devices connected on + HSUART1/2 ports are described by the ACPI BIOS as virtual hardware using + HID's INT3511/INT3512 [1]. + + As a consequence, HW manufacturers have complete freedom to install any + devices on-board as long as they can be accessed over serial tty + interface. Once such device is Dell Edge 3002 IoT Gateway which sports + ZigBee & GPS devices on the HS-UART ports 1 & 2 respectively. + + Post 4.15, with CONFIG_SERIAL_DEV_BUS=y, serdev port controller driver + handles the enumeration for the slaves connected on these ports. Also, + /dev/ttySx device nodes for these ports are no longer exposed to the + userspace. Please don't triage, this bug is for tracking purposes only. ** Changed in: linux-oem (Ubuntu) Status: New => Confirmed ** Changed in: linux-oem (Ubuntu) Importance: Undecided => Critical -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1769610 Title: Support Intel Atom (Baytrail-I) HS-UART serdev slaves over tty To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-oem/+bug/1769610/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs