diff options
| author | Simon Glass <sjg@chromium.org> | 2015-06-23 15:39:13 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-07-21 17:39:29 -0600 |
| commit | f9917454d55caf3dafa41b27d8d8274716433a4c (patch) | |
| tree | 81f7c0e4cb2a9c3e04eab94ef17da21f2de1192f /drivers/misc/Kconfig | |
| parent | 92a655c326b22de58dcd5371ca1a62fdc57f8e04 (diff) | |
dm: Add a system reset uclass
It is common for system reset to be available at multiple levels in modern
hardware. For example, an SoC may provide a reset option, and a board may
provide its own reset for reasons of security or thoroughness. It is useful
to be able to model this hardware without hard-coding the behaviour in the
SoC or board. Also there is a distinction sometimes between resetting just
the CPU (leaving GPIO state alone) and resetting all the PMICs, just cutting
power.
To achieve this, add a simple system reset uclass. It allows multiple devices
to provide reset functionality and provides a way to walk through them,
requesting a particular reset type until is it provided.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/misc/Kconfig')
| -rw-r--r-- | drivers/misc/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 64b07a3015..3b7f76ab78 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -73,3 +73,12 @@ config PCA9551_I2C_ADDR default 0x60 help The I2C address of the PCA9551 LED controller. + +config RESET + bool "Enable support for reset drivers" + depends on DM + help + Enable reset drivers which can be used to reset the CPU or board. + Each driver can provide a reset method which will be called to + effect a reset. The uclass will try all available drivers when + reset_walk() is called. |