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authorStefan Wahren <stefan.wahren@i2se.com>2018-05-25 22:24:34 +0300
committerEric Anholt <eric@anholt.net>2018-06-22 03:17:11 +0300
commitbe3035e3627d2570de4c2c612ecd095968986437 (patch)
treee013cd3b68c45679f2f3194dc87be9c72859fccd /include/soc
parentce397d215ccd07b8ae3f71db689aedb85d56ab40 (diff)
downloadlinux-be3035e3627d2570de4c2c612ecd095968986437.tar.xz
ARM: bcm2835: Add GET_THROTTLED firmware property
Recent Raspberry Pi firmware provides a mailbox property to detect under-voltage conditions. Here is the current definition. The u32 value returned by the firmware is divided into 2 parts: - lower 16-bits are the live value - upper 16-bits are the history or sticky value Bits: 0: undervoltage 1: arm frequency capped 2: currently throttled 16: undervoltage has occurred 17: arm frequency capped has occurred 18: throttling has occurred Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Eric Anholt <eric@anholt.net> Reviewed-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'include/soc')
-rw-r--r--include/soc/bcm2835/raspberrypi-firmware.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h
index 8ee8991aa099..c4a5c9e9fb47 100644
--- a/include/soc/bcm2835/raspberrypi-firmware.h
+++ b/include/soc/bcm2835/raspberrypi-firmware.h
@@ -75,6 +75,7 @@ enum rpi_firmware_property_tag {
RPI_FIRMWARE_GET_EDID_BLOCK = 0x00030020,
RPI_FIRMWARE_GET_CUSTOMER_OTP = 0x00030021,
RPI_FIRMWARE_GET_DOMAIN_STATE = 0x00030030,
+ RPI_FIRMWARE_GET_THROTTLED = 0x00030046,
RPI_FIRMWARE_SET_CLOCK_STATE = 0x00038001,
RPI_FIRMWARE_SET_CLOCK_RATE = 0x00038002,
RPI_FIRMWARE_SET_VOLTAGE = 0x00038003,