1*443b39c8SMichael Walle.. SPDX-License-Identifier: GPL-2.0-only 2*443b39c8SMichael Walle 3*443b39c8SMichael WalleKernel driver sa67mcu 4*443b39c8SMichael Walle===================== 5*443b39c8SMichael Walle 6*443b39c8SMichael WalleSupported chips: 7*443b39c8SMichael Walle 8*443b39c8SMichael Walle * Kontron sa67mcu 9*443b39c8SMichael Walle 10*443b39c8SMichael Walle Prefix: 'sa67mcu' 11*443b39c8SMichael Walle 12*443b39c8SMichael Walle Datasheet: not available 13*443b39c8SMichael Walle 14*443b39c8SMichael WalleAuthors: Michael Walle <mwalle@kernel.org> 15*443b39c8SMichael Walle 16*443b39c8SMichael WalleDescription 17*443b39c8SMichael Walle----------- 18*443b39c8SMichael Walle 19*443b39c8SMichael WalleThe sa67mcu is a board management controller which also exposes a hardware 20*443b39c8SMichael Wallemonitoring controller. 21*443b39c8SMichael Walle 22*443b39c8SMichael WalleThe controller has two voltage and one temperature sensor. The values are 23*443b39c8SMichael Wallehold in two 8 bit registers to form one 16 bit value. Reading the lower byte 24*443b39c8SMichael Wallewill also capture the high byte to make the access atomic. The unit of the 25*443b39c8SMichael Wallevolatge sensors are 1mV and the unit of the temperature sensor is 0.1degC. 26*443b39c8SMichael Walle 27*443b39c8SMichael WalleSysfs entries 28*443b39c8SMichael Walle------------- 29*443b39c8SMichael Walle 30*443b39c8SMichael WalleThe following attributes are supported. 31*443b39c8SMichael Walle 32*443b39c8SMichael Walle======================= ======================================================== 33*443b39c8SMichael Wallein0_label "VDDIN" 34*443b39c8SMichael Wallein0_input Measured VDDIN voltage. 35*443b39c8SMichael Walle 36*443b39c8SMichael Wallein1_label "VDD_RTC" 37*443b39c8SMichael Wallein1_input Measured VDD_RTC voltage. 38*443b39c8SMichael Walle 39*443b39c8SMichael Walletemp1_input MCU temperature. Roughly the board temperature. 40*443b39c8SMichael Walle======================= ======================================================== 41*443b39c8SMichael Walle 42