| From ac442a077acf9a6bf1db4320ec0c3f303be092b3 Mon Sep 17 00:00:00 2001 |
| From: Pierre Gondois <Pierre.Gondois@arm.com> |
| Date: Tue, 9 Nov 2021 17:22:48 +0000 |
| Subject: serial: pl011: Add ACPI SBSA UART match id |
| |
| From: Pierre Gondois <Pierre.Gondois@arm.com> |
| |
| 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 | 1 + |
| 1 file changed, 1 insertion(+) |
| |
| --- a/drivers/tty/serial/amba-pl011.c |
| +++ b/drivers/tty/serial/amba-pl011.c |
| @@ -2493,6 +2493,7 @@ MODULE_DEVICE_TABLE(of, sbsa_uart_of_mat |
| |
| static const struct acpi_device_id sbsa_uart_acpi_match[] = { |
| { "ARMH0011", 0 }, |
| + { "ARMHB000", 0 }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(acpi, sbsa_uart_acpi_match); |
