diff options
| author | Pierre Gondois <Pierre.Gondois@arm.com> | 2021-11-09 17:22:48 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-08 09:01:14 +0100 |
| commit | 7ed4a98a174c13e5f0303a0d4d62af7250f47e0a (patch) | |
| tree | d070a7b53346a51698d0a341cd04c49463cb9361 /drivers/tty | |
| parent | 9e16682c94ec455603192f51641bf223e65146f2 (diff) | |
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>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/amba-pl011.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index 16720c97a4dd..6741d0f3daf9 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -2770,6 +2770,7 @@ MODULE_DEVICE_TABLE(of, sbsa_uart_of_match); static const struct acpi_device_id sbsa_uart_acpi_match[] = { { "ARMH0011", 0 }, + { "ARMHB000", 0 }, {}, }; MODULE_DEVICE_TABLE(acpi, sbsa_uart_acpi_match); |