tegra: Convert tegra GPIO driver to use driver model
This is an implementation of GPIOs for Tegra that uses driver model. It has
been tested on trimslice and also using the new iotrace feature.
The implementation uses a top-level GPIO device (which has no actual GPIOS).
Under this all the banks are created as separate GPIO devices.
The GPIOs are named as per the Tegra datasheet/header files: A0..A7, B0..B7,
..., Z0..Z7, AA0..AA7, etc.
Since driver model is not yet available before relocation, or in SPL, a
special function is provided for seaboard's SPL code.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/configs/tegra-common.h b/include/configs/tegra-common.h
index 7852f9a..f1187f1 100644
--- a/include/configs/tegra-common.h
+++ b/include/configs/tegra-common.h
@@ -20,6 +20,7 @@
#define CONFIG_DM
#define CONFIG_CMD_DM
+#define CONFIG_DM_GPIO
#define CONFIG_SYS_TIMER_RATE 1000000
#define CONFIG_SYS_TIMER_COUNTER NV_PA_TMRUS_BASE