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Media Case PWM fan control with Alta AML-A311D-CC

pwm, fan, aml-a311d-cc

librecomputer June 18, 2025, 4:20pm 4

How to Enable and Control PWMs for Libre Computer AML-S905D3-CC Solitude and AML-A311D-CC Alta Cottonwood Family Hardware

There are 10 PWMs, 4 AO and 6 EE. Any GPIO can be used as a software PWM but those require CPU interrupts which are taxing for the system and not as accurate. These are the pins that can be muxed to expose PWM functionality. For graphical representation, see the GPIO header maps. PWM to GPIO pinmux PWMAO_A GPIOAO_11 PWMAO_B GPIOE_0 PWMAO_C GPIOAO_4 GPIOAO_6 PWMAO_D GPIOE_1 GPIOAO_5 GPIOAO_10 PWM_A GPIOX_6 PWM_B GPIOZ_0 GPIOZ_13 GPIOX_7 GPIOX_19 GPIOH_7 PWM_C GPIOX_8 GPIOX_5 GPIOC_4 GPIOZ_1 PW…

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