linux-kernel - [PATCH] firmware: arm_scmi: Add new sensor unit types

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20251021165212.749372-1-a.shimko.dev@gmail.com>
Date: Tue, 21 Oct 2025 19:52:11 +0300
From: Artem Shimko <a.shimko.dev@...il.com>
To: Sudeep Holla <sudeep.holla@....com>,
	Cristian Marussi <cristian.marussi@....com>
Cc: a.shimko.dev@...il.com,
	arm-scmi@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] firmware: arm_scmi: Add new sensor unit types

Add support for two new sensor unit types introduced in Arm SCMI
- STATE_BINARY (0x5E): Binary state (1: enabled/on, 0: disabled/off)
- BYTES_SEC (0x5F): Bytes per second

These unit types are used for sensors that report binary state information
and data transfer rate measurements respectively.

Signed-off-by: Artem Shimko <a.shimko.dev@...il.com>
---
Hello,

This patch adds definitions for two new sensor unit types that were
introduced in the Arm System Control and Management Interface (SCMI)
Specification version 4.0:

STATE_BINARY (0x5E) - Used for sensors that represent binary states
where:
1 indicates enabled/on state
0 indicates disabled/off state

BYTES_SEC (0x5F) - Used for sensors that measure data transfer rates
in bytes per second

These additions ensure compatibility with SCMIv4.0 and allow proper
handling of binary state sensors and bandwidth measurement sensors
in the Linux SCMI driver.

The patch follows the existing pattern for sensor unit type definitions
and maintains backward compatibility with previous SCMI versions.

Thank you for your consideration.

Best regards,
Artem Shimko

 include/linux/scmi_protocol.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h
index aafaac1496b0..629acb7831eb 100644
--- a/include/linux/scmi_protocol.h
+++ b/include/linux/scmi_protocol.h
@@ -488,6 +488,8 @@ enum scmi_sensor_class {
 	CUBIC_METERS_SEC = 0x5B,
 	MM_MERCURY = 0x5C,
 	RADIANS_SEC_SQUARED = 0x5D,
+	STATE_BINARY = 0x5E,
+	BYTES_SEC = 0x5F,
 	OEM_UNIT = 0xFF
 };
 
-- 
2.43.0