]> git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/commit
serial: pl011: Add ACPI SBSA UART match id
authorPierre Gondois <Pierre.Gondois@arm.com>
Tue, 9 Nov 2021 17:22:48 +0000 (17:22 +0000)
committerPaolo Pisati <paolo.pisati@canonical.com>
Thu, 9 Dec 2021 10:10:54 +0000 (11:10 +0100)
commitaef46e36ca2d203a68404740f8f65ad9a4073855
tree5ac2eaf40ef0033b4ffb7c47b44ae1c8360a7bd0
parent7136a4920895c82029beb3c66b52bef3bb141f4d
serial: pl011: Add ACPI SBSA UART match id

BugLink: https://bugs.launchpad.net/bugs/1953731
commit ac442a077acf9a6bf1db4320ec0c3f303be092b3 upstream.

The document 'ACPI for Arm Components 1.0' defines the following
_HID mappings:
-'Prime cell UART (PL011)': ARMH0011
-'SBSA UART': ARMHB000

Use the sbsa-uart driver when a device is described with
the 'ARMHB000' _HID.

Note:
PL011 devices currently use the sbsa-uart driver instead of the
uart-pl011 driver. Indeed, PL011 devices are not bound to a clock
in ACPI. It is not possible to change their baudrate.

Cc: <stable@vger.kernel.org>
Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
Link: https://lore.kernel.org/r/20211109172248.19061-1-Pierre.Gondois@arm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>
drivers/tty/serial/amba-pl011.c