A common issue for the Raspberry Pi is an inadequate power supply. Noralf Trønnes started a discussion [1] about writing such undervoltage conditions into the kernel log. This series is a draft to upstream the resulting kernel patch and is not intended for 4.18. Changes in V2: - simplified Kconfig dependency suggested by Robin Murphy - replace dt-binding by probing from firmware driver - add hwmon documentation - minor improvements suggested by Guenter Roeck [1] - https://github.com/raspberrypi/linux/issues/2367 Stefan Wahren (6): ARM: bcm2835: Add GET_THROTTLED firmware property hwmon: Add support for RPi voltage sensor firmware: raspberrypi: Register hwmon driver ARM: bcm2835_defconfig: Enable RPi voltage sensor ARM: multi_v7_defconfig: Enable RPi voltage sensor arm64: defconfig: Enable RPi voltage sensor Documentation/hwmon/raspberrypi-hwmon | 22 ++++ arch/arm/configs/bcm2835_defconfig | 2 +- arch/arm/configs/multi_v7_defconfig | 1 + arch/arm64/configs/defconfig | 1 + drivers/firmware/raspberrypi.c | 19 ++++ drivers/hwmon/Kconfig | 10 ++ drivers/hwmon/Makefile | 1 + drivers/hwmon/raspberrypi-hwmon.c | 168 +++++++++++++++++++++++++++++ include/soc/bcm2835/raspberrypi-firmware.h | 1 + 9 files changed, 224 insertions(+), 1 deletion(-) create mode 100644 Documentation/hwmon/raspberrypi-hwmon create mode 100644 drivers/hwmon/raspberrypi-hwmon.c -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
