linux-kernel - [PATCH v4 3/3] Documentation: power: rt9471: Document exported sysfs entries

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Message-Id: <1661742391-11378-4-git-send-email-u0084500@gmail.com>
Date:   Mon, 29 Aug 2022 11:06:31 +0800
From:   cy_huang <u0084500@...il.com>
To:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        sre@...nel.org
Cc:     mazziesaccount@...il.com, alina_yu@...htek.com,
        cy_huang@...htek.com, alinayu829@...il.com,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v4 3/3] Documentation: power: rt9471: Document exported sysfs entries

From: ChiYuan Huang <cy_huang@...htek.com>

Document the settings exported by rt9471 charger driver through sysfs entries:
- sysoff_enable
- charge_term_enable
- port_detect_enable

Signed-off-by: ChiYuan Huang <cy_huang@...htek.com>
---
 Documentation/ABI/testing/sysfs-class-power | 44 +++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power
index a9ce63c..1f8afe5 100644
--- a/Documentation/ABI/testing/sysfs-class-power
+++ b/Documentation/ABI/testing/sysfs-class-power
@@ -768,3 +768,47 @@ Description:
 
 		Access: Read
 		Valid values: 1-31
+
+What:		/sys/class/power_supply/rt9471-*/sysoff_enable
+Date:		Sep 2022
+KernelVersion:	6.1
+Contact:	ChiYuan Huang <cy_huang@...htek.com>
+Description:
+		This entry allows enabling the sysoff mode of rt9471 charger devices.
+		If enabled and the input is removed, the internal battery FET is turned
+		off to reduce the leakage from the BAT pin. See device datasheet for details.
+
+		Access: Read, Write
+		Valid values:
+		- 1: enabled
+		- 0: disabled
+
+What:		/sys/class/power_supply/rt9471-*/charge_term_enable
+Date:		Sep 2022
+KernelVersion:	6.1
+Contact:	ChiYuan Huang <cy_huang@...htek.com>
+Description:
+		This entry allows enabling the charge termination function of rt9471 charger
+		devices. If enabled, the battery charging current, and the battery voltage
+		reachs charge termination condition, the internal battery FET will be turned off
+		to optimize the battery life. See device datasheet for details.
+
+		Access: Read, Write
+		Valid values:
+		- 1: enabled
+		- 0: disabled
+
+What:		/sys/class/power_supply/rt9471-*/port_detect_enable
+Date:		Sep 2022
+KernelVersion:	6.1
+Contact:	ChiYuan Huang <cy_huang@...htek.com>
+Description:
+		This entry allows enabling the USB BC12 port detect function of rt9471 charger
+		devices. If enabled and VBUS is inserted, device will start to do the BC12
+		port detect and report the usb port type when port detect is done. See
+		datasheet for details.
+
+		Access: Read, Write
+		Valid values:
+		- 1: enabled
+		- 0: disabled
-- 
2.7.4