linux-kernel - [PATCH 4/4] Documentation: ABI: Document Broadcom STB PSCI firmware files

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Message-Id: <20220122035421.4086618-5-f.fainelli@gmail.com>
Date:   Fri, 21 Jan 2022 19:54:21 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        bcm-kernel-feedback-list@...adcom.com (maintainer:BROADCOM BCM7XXX ARM
        ARCHITECTURE), Mark Rutland <mark.rutland@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 4/4] Documentation: ABI: Document Broadcom STB PSCI firmware files

Document the attributes created by the Broadcom STB PSCI firmware code
to allow retrieving the firmware version and the control of the CPU
retention upon system suspend entry.

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 Documentation/ABI/testing/sysfs-firmware-brcmstb | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-firmware-brcmstb

diff --git a/Documentation/ABI/testing/sysfs-firmware-brcmstb b/Documentation/ABI/testing/sysfs-firmware-brcmstb
new file mode 100644
index 000000000000..5ebd8d0a34be
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-brcmstb
@@ -0,0 +1,16 @@
+What:		/sys/firmware/brcmstb/mon_version
+Date:		Jan 2022
+Contact:	Florian Fainelli <f.fainelli@...il.com>
+Description:
+		Reports the ARM trusted firmware (monitor) version running on
+		the Broadcom STB platforms under the format:
+		A.B.C.D
+
+What:		/sys/firmware/brcmstb/cpu_retention
+Date:		Jan 2022
+Contact:	Florian Fainelli <f.fainelli@...il.com>
+Description:
+		Allows the toggling of whether S2 standby should be entered
+		with (default) or without CPU retention.
+
+		Accepted values are 0 or 1.
-- 
2.25.1