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Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0892-docs-hwmon-add-emc2305.rst-to-docs.patch')
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diff --git a/target/linux/bcm27xx/patches-5.15/950-0892-docs-hwmon-add-emc2305.rst-to-docs.patch b/target/linux/bcm27xx/patches-5.15/950-0892-docs-hwmon-add-emc2305.rst-to-docs.patch new file mode 100644 index 0000000000..ed542db83e --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0892-docs-hwmon-add-emc2305.rst-to-docs.patch @@ -0,0 +1,60 @@ +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 |