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| author | Steen Hegelund <steen.hegelund@microchip.com> | 2021-04-16 11:40:53 +0300 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2021-05-10 10:40:05 +0300 |
| commit | 453ed4283bebd0776682c5a3227619d92caa9c8c (patch) | |
| tree | f7bb28f490492a6a4490798c4404364b01599fa3 /drivers/reset/Kconfig | |
| parent | 9a531e4d5a49925554f99024d164572cbd6a8d9b (diff) | |
| download | linux-453ed4283bebd0776682c5a3227619d92caa9c8c.tar.xz | |
reset: mchp: sparx5: add switch reset driver
The Sparx5 Switch SoC has a number of components that can be reset
indiviually, but at least the Switch Core needs to be in a well defined
state at power on, when any of the Sparx5 drivers starts to access the
Switch Core, this reset driver is available.
The reset driver is loaded early via the postcore_initcall interface, and
will then be available for the other Sparx5 drivers (SGPIO, SwitchDev etc)
that are loaded next, and the first of them to be loaded can perform the
one-time Switch Core reset that is needed.
The driver has protection so that the system busses, DDR controller, PCI-E
and ARM A53 CPU and a few other subsystems are not touched by the reset.
Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Diffstat (limited to 'drivers/reset/Kconfig')
| -rw-r--r-- | drivers/reset/Kconfig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index 3e7f55e44d84..c319cf1d83e7 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -111,6 +111,14 @@ config RESET_LPC18XX help This enables the reset controller driver for NXP LPC18xx/43xx SoCs. +config RESET_MCHP_SPARX5 + bool "Microchip Sparx5 reset driver" + depends on HAS_IOMEM || COMPILE_TEST + default y if SPARX5_SWITCH + select MFD_SYSCON + help + This driver supports switch core reset for the Microchip Sparx5 SoC. + config RESET_MESON tristate "Meson Reset Driver" depends on ARCH_MESON || COMPILE_TEST |