Re: [PATCH] arm64: dts: amlogic: meson-sm1-odroid-hc4: add the fan tachometer

[Igor Velkov]

On Tue, 06 Oct 2026 04:17:33 +0000, sashiko-bot@xxxxxxxxxx wrote:
> Without an explicit pinctrl-0 property in the fan0 node, will the fan
> tachometer silently fail to read the fan speed (always reporting 0) on systems
> where the bootloader leaves GPIOX_7 configured as an alternate function (such
> as uart_b_rx or pwm_f_x) instead of a GPIO input?

Checked on the board: with GPIOX_7 muxed to uart_b_rx, the interrupt
counts edges as it does with the pin as GPIO (452 vs 445 in 5 s).
U-Boot leaves the pin as GPIO. The PHY interrupt on this board is
described the same way, without pinctrl.

Igor