From: Marcin Wojtas <mw@semihalf.com>
To: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
devel@acpica.org
Cc: jaz@semihalf.com, gjb@semihalf.com, upstream@semihalf.com,
Samer.El-Haj-Mahmoud@arm.com, jon@solid-run.com, tn@semihalf.com,
rjw@rjwysocki.net, lenb@kernel.org, robert.moore@intel.com,
Marcin Wojtas <mw@semihalf.com>
Subject: [PATCH 2/2] ACPI: SPCR: Add support for the new 16550-compatible Serial Port Subtype
Date: Wed, 14 Jul 2021 23:43:46 +0200 [thread overview]
Message-ID: <20210714214346.1397942-3-mw@semihalf.com> (raw)
In-Reply-To: <20210714214346.1397942-1-mw@semihalf.com>
The Microsoft Debug Port Table 2 (DBG2) specification revision
May 31, 2017 added definition of the 16550-compatible Serial Port
Subtype with parameters defined in Generic Address Structure (GAS) [1]
Add its support in the SPCR table parsing routine.
[1] https://docs.microsoft.com/en-us/windows-hardware/drivers/bringup/acpi-debug-port-table
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
---
drivers/acpi/spcr.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/acpi/spcr.c b/drivers/acpi/spcr.c
index 88460bacd5ae..25c2d0be953e 100644
--- a/drivers/acpi/spcr.c
+++ b/drivers/acpi/spcr.c
@@ -136,6 +136,7 @@ int __init acpi_parse_spcr(bool enable_earlycon, bool enable_console)
break;
case ACPI_DBG2_16550_COMPATIBLE:
case ACPI_DBG2_16550_SUBSET:
+ case ACPI_DBG2_16550_WITH_GAS:
uart = "uart";
break;
default:
--
2.29.0
next prev parent reply other threads:[~2021-07-14 21:46 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-14 21:43 [PATCH 0/2] ACPI: Update DBG2 Serial Port Subtypes list Marcin Wojtas
2021-07-14 21:43 ` [PATCH 1/2] ACPICA: Add new DBG2 Serial Port Subtypes Marcin Wojtas
2021-07-15 14:07 ` Moore, Robert
2021-07-15 14:17 ` Marcin Wojtas
2021-07-15 15:44 ` Moore, Robert
2021-07-15 15:46 ` Marcin Wojtas
2021-07-16 14:08 ` Moore, Robert
2021-07-14 21:43 ` Marcin Wojtas [this message]
2021-08-16 16:39 ` [PATCH 2/2] ACPI: SPCR: Add support for the new 16550-compatible Serial Port Subtype Rafael J. Wysocki
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