Hi ports@, OpenBSD supports temperature readings for Pine A64 (sxitemp.c, allwinner,sun50i-a64-ths) but dts file in u-boot port does not contain necessary entry.
Its based on FreeBSD overlay[1] with small changes (no sensor calibration in OpenBSD yet). Built with FLAVOR=aarch64. before: $ sysctl hw hw.machine=arm64 hw.model=ARM Cortex-A53 r0p4 […] hw.sensors.axppmic0.temp0=36.28 degC hw.sensors.axppmic0.indicator0=On (ACIN), OK hw.sensors.axppmic0.indicator1=Off (VBUS) […] hw.product=Pine64+ […] after: $ sysctl hw […] hw.sensors.axppmic0.temp0=37.45 degC hw.sensors.axppmic0.indicator0=On (ACIN), OK hw.sensors.axppmic0.indicator1=Off (VBUS) hw.sensors.sxitemp0.temp0=43.57 degC (CPU) hw.sensors.sxitemp0.temp1=43.57 degC (GPU) hw.sensors.sxitemp0.temp2=44.39 degC […] Krystian [1] https://github.com/freebsd/freebsd/blob/master/sys/dts/arm64/overlays/sun50i-a64-ths.dtso Index: patches/patch-arch_arm_dts_sun50i-a64_dtsi =================================================================== RCS file: patches/patch-arch_arm_dts_sun50i-a64_dtsi diff -N patches/patch-arch_arm_dts_sun50i-a64_dtsi --- /dev/null 1 Jan 1970 00:00:00 -0000 +++ patches/patch-arch_arm_dts_sun50i-a64_dtsi 29 Jan 2019 17:31:45 -0000 @@ -0,0 +1,24 @@ +$OpenBSD$ + +Index: arch/arm/dts/sun50i-a64.dtsi +--- arch/arm/dts/sun50i-a64.dtsi.orig ++++ arch/arm/dts/sun50i-a64.dtsi +@@ -666,6 +666,18 @@ + status = "disabled"; + }; + ++ ths: thermal-sensor@1c25000 { ++ compatible = "allwinner,sun50i-a64-ths"; ++ reg = <0x01c25000 0x100>; ++ interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>; ++ clocks = <&ccu CLK_BUS_THS>, <&ccu CLK_THS>; ++ clock-names = "apb", "ths"; ++ resets = <&ccu RST_BUS_THS>; ++ reset-names = "apb"; ++ #thermal-sensor-cells = <2>; ++ status = "okay"; ++ }; ++ + uart0: serial@1c28000 { + compatible = "snps,dw-apb-uart"; + reg = <0x01c28000 0x400>;