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| author | Stefan Wahren <stefan.wahren@i2se.com> | 2018-05-25 21:24:34 +0200 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2018-06-21 17:17:11 -0700 |
| commit | be3035e3627d2570de4c2c612ecd095968986437 (patch) | |
| tree | e013cd3b68c45679f2f3194dc87be9c72859fccd | |
| parent | ce397d215ccd07b8ae3f71db689aedb85d56ab40 (diff) | |
| download | linux-be3035e3627d2570de4c2c612ecd095968986437.tar.bz2 | |
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>
| -rw-r--r-- | include/soc/bcm2835/raspberrypi-firmware.h | 1 |
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, |