dm: Add support for generic system controllers (syscon)
Many SoCs have a number of system controllers which are dealt with as a
group by a single driver. It is a pain to have to add lots of compatible
strings and/or separate drivers for each. Instead we can identify the
controllers by a number and request the address of the one we want.
Add a simple implementation of this which can be used by SoC driver code.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h
index c7310d7..24baa5c 100644
--- a/include/dm/uclass-id.h
+++ b/include/dm/uclass-id.h
@@ -46,6 +46,7 @@
UCLASS_SPI, /* SPI bus */
UCLASS_SPI_FLASH, /* SPI flash */
UCLASS_SPI_GENERIC, /* Generic SPI flash target */
+ UCLASS_SYSCON, /* System configuration device */
UCLASS_THERMAL, /* Thermal sensor */
UCLASS_USB, /* USB bus */
UCLASS_USB_DEV_GENERIC, /* USB generic device */