mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 10:08:59 +00:00
20ea6adbf1
Build system: x86_64 Build-tested: bcm2708, bcm2709, bcm2710, bcm2711 Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B Signed-off-by: Marty Jones <mj8263788@gmail.com> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
61 lines
2.5 KiB
Diff
61 lines
2.5 KiB
Diff
From 653ef165247824be27e900ab28d1f8aa74c09604 Mon Sep 17 00:00:00 2001
|
|
From: Michael Shych <michaelsh@nvidia.com>
|
|
Date: Sat, 30 Apr 2022 14:49:05 +0300
|
|
Subject: [PATCH] docs: hwmon: add emc2305.rst to docs
|
|
|
|
Submitted to linux-hwmon mailing list at
|
|
https://patchwork.kernel.org/project/linux-hwmon/patch/20220430114905.53448-4-michaelsh@nvidia.com/
|
|
|
|
Add description of emc2305 driver.
|
|
|
|
Signed-off-by: Michael Shych <michaelsh@nvidia.com>
|
|
Reviewed-by: Vadim Pasternak <vadimp@nvidia.com>
|
|
---
|
|
Documentation/hwmon/emc2305.rst | 40 +++++++++++++++++++++++++++++++++
|
|
1 file changed, 40 insertions(+)
|
|
create mode 100644 Documentation/hwmon/emc2305.rst
|
|
|
|
--- /dev/null
|
|
+++ b/Documentation/hwmon/emc2305.rst
|
|
@@ -0,0 +1,40 @@
|
|
+.. SPDX-License-Identifier: GPL-2.0
|
|
+
|
|
+Kernel driver emc2305
|
|
+=====================
|
|
+
|
|
+Supported chips:
|
|
+ Microchip EMC2305, EMC2303, EMC2302, EMC2301
|
|
+
|
|
+ Addresses scanned: I2C 0x27, 0x2c, 0x2d, 0x2e, 0x2f, 0x4c, 0x4d
|
|
+ Prefixes: 'emc2305'
|
|
+
|
|
+ Datasheet: Publicly available at the Microchip website :
|
|
+ https://www.microchip.com/en-us/product/EMC2305
|
|
+
|
|
+Description:
|
|
+-----------
|
|
+This driver implements support for Microchip EMC2301/2/3/5 RPM-based PWM Fan Controller.
|
|
+The EMC2305 Fan Controller supports up to 5 independently controlled PWM fan drives.
|
|
+Fan rotation speeds are reported in RPM.
|
|
+The driver supports the RPM-based PWM control to keep a fan at the desired speed.
|
|
+The driver provides the possibility to have one common PWM interface for all FANs
|
|
+or up to the maximum available or configured independent PWMs.
|
|
+
|
|
+The driver provides the following sysfs interfaces in hwmon subsystem:
|
|
+
|
|
+================= == ===================================================
|
|
+fan[1-5]_fault RO files for tachometers TACH1-TACH5 fault indication
|
|
+fan[1-5]_input RO files for tachometers TACH1-TACH5 input (in RPM)
|
|
+pwm[1-5] RW file for fan[1-5] target duty cycle (0..255)
|
|
+================= == ===================================================
|
|
+
|
|
+sysfs interfaces in thermal subsystem:
|
|
+
|
|
+================= == ========================================================================
|
|
+cur_state RW file for the current cooling state of the cooling device (0..max_state)
|
|
+max_state RO file for the maximum cooling state of the cooling device
|
|
+================= == ========================================================================
|
|
+
|
|
+Configuration is possible via device tree:
|
|
+Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml
|