Commit bf4206d7 authored by Chen Pei's avatar Chen Pei Committed by Rafael J. Wysocki
Browse files

ACPI: SPCR: Add support for DBG2 RISC-V SBI port subtype 



Commit 4aca2bef ("ACPICA: Headers: Add RISC-V SBI Subtype to
DBG2") added the definition of ACPI_DBG2_RISCV_SBI_CON.

Continue to implement its function so that the parameters of UART can
be configured correctly.

Subsequent calls to setup_earlycon() will reuse the earlycon based on
SBI.

Signed-off-by: default avatarChen Pei <cp0613@linux.alibaba.com>
Reviewed-by: default avatarGuo Ren (Alibaba Damo Academy) <guoren@kernel.org>
Link: https://patch.msgid.link/20250910094136.4423-1-cp0613@linux.alibaba.com


[ rjw: Changelog edits ]
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent f83ec76b

drivers/acpi/spcr.c

+3 −0
Original line number Diff line number Diff line
@@ -141,6 +141,9 @@ int __init acpi_parse_spcr(bool enable_earlycon, bool enable_console) 
	case ACPI_DBG2_16550_NVIDIA:

		uart = "uart";

		break;

	case ACPI_DBG2_RISCV_SBI_CON:

		uart = "sbi";

		break;

	default:

		err = -ENOENT;

		goto done;