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 Kernel Packages, which is subscribed to linux-oem in Ubuntu. https://bugs.launchpad.net/bugs/1769610 Title: Support Intel Atom (Baytrail-I) HS-UART serdev slaves over tty Status in linux-oem package in Ubuntu: Confirmed Bug description: 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-oem/+bug/1769610/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp