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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 8 Dec 2021 08:03:29 +0000 (09:03 +0100)
commit901f7e0aa4a6a62ec336d8478abafef8149d71fd
tree609d9e62b0e78200f73f2f95388f83c7c4747fb2
parent946ded2287a0dede1d2e32e51f4ecb7bec7d6c0b
serial: pl011: Add ACPI SBSA UART match id

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>
drivers/tty/serial/amba-pl011.c