reset: Add driver for gpio-controlled reset pins

This driver implements a reset controller device that toggle a gpio
connected to a reset pin of a peripheral IC. The delay between assertion
and de-assertion of the reset signal can be configured via device tree.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index c9d04f797862..1a862dfe62f6 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -11,3 +11,14 @@ menuconfig RESET_CONTROLLER
           via GPIOs or SoC-internal reset controller modules.
 
           If unsure, say no.
+
+if RESET_CONTROLLER
+
+config RESET_GPIO
+        tristate "GPIO reset controller support"
+        depends on GPIOLIB && OF
+        help
+          This driver provides support for reset lines that are controlled
+          directly by GPIOs.
+
+endif