From 22a4e56a37c8b8badb325a55e72d626399070ffe Mon Sep 17 00:00:00 2001 From: Steffen Dirkwinkel Date: Thu, 13 Aug 2026 20:37:05 +0200 Subject: [PATCH] serial: 8250_dw: Add device HID for AMDI0021 AMD UART controller This ID is found on AMD V1202B. Like the AMDI0022 [1] this one works with the same match and the existing driver. Tested with a loopback cable. [1] commit 3c35d2a960c0 ("serial: 8250_dw: Add device HID for new AMD UART controller") Signed-off-by: Steffen Dirkwinkel Link: https://git.kernel.org/torvalds/c/3c35d2a960c0 [1] Reviewed-by: Andy Shevchenko Acked-by: Shyam Sundar S K Link: https://patch.msgid.link/20260813-b4-raven-ridge-uart-v1-1-fae442416ba1@beckhoff.com Signed-off-by: Greg Kroah-Hartman --- drivers/acpi/acpi_apd.c | 1 + drivers/tty/serial/8250/8250_dw.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/acpi/acpi_apd.c b/drivers/acpi/acpi_apd.c index e7366fcb76ee..9fc667d6776c 100644 --- a/drivers/acpi/acpi_apd.c +++ b/drivers/acpi/acpi_apd.c @@ -256,6 +256,7 @@ static const struct acpi_device_id acpi_apd_device_ids[] = { { "AMDI0015", APD_ADDR(wt_i3c_desc) }, { "AMDI0019", APD_ADDR(wt_i2c_desc) }, { "AMDI0020", APD_ADDR(cz_uart_desc) }, + { "AMDI0021", APD_ADDR(cz_uart_desc) }, { "AMDI0022", APD_ADDR(cz_uart_desc) }, { "HYGO0010", APD_ADDR(wt_i2c_desc) }, #endif diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index 51d026f20825..4588e9cf0389 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -910,6 +910,7 @@ static const struct acpi_device_id dw8250_acpi_match[] = { { "8086228A", (kernel_ulong_t)&dw8250_dw_apb }, { "AMD0020", (kernel_ulong_t)&dw8250_dw_apb }, { "AMDI0020", (kernel_ulong_t)&dw8250_dw_apb }, + { "AMDI0021", (kernel_ulong_t)&dw8250_dw_apb }, { "AMDI0022", (kernel_ulong_t)&dw8250_dw_apb }, { "APMC0D08", (kernel_ulong_t)&dw8250_apmc0d08 }, { "BRCM2032", (kernel_ulong_t)&dw8250_dw_apb },