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authorJean-Jacques Hiblot2018-11-29 10:57:37 +0100
committerMarek Vasut2018-12-07 16:31:45 +0100
commit6c3af1f24e4b8ccbef20bc00b9529f4a325583f2 (patch)
tree534081dec42ca033d3e9737965804d6d1ebe02e4 /include
parent4d3825c1915e1649c4be0320e74be158e4698655 (diff)
syscon: dm: Add a new method to get a regmap from DTS
syscon_regmap_lookup_by_phandle() can be used to get the regmap of a syscon device from a reference in the DTS. It operates similarly to the linux version of the namesake function. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include')
-rw-r--r--include/syscon.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/syscon.h b/include/syscon.h
index 2aa73e520af..3df96e32764 100644
--- a/include/syscon.h
+++ b/include/syscon.h
@@ -74,6 +74,19 @@ int syscon_get_by_driver_data(ulong driver_data, struct udevice **devp);
struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data);
/**
+ * syscon_regmap_lookup_by_phandle() - Look up a controller by a phandle
+ *
+ * This operates by looking up the given name in the device (device
+ * tree property) of the device using the system controller.
+ *
+ * @dev: Device using the system controller
+ * @name: Name of property referring to the system controller
+ * @return A pointer to the regmap if found, ERR_PTR(-ve) on error
+ */
+struct regmap *syscon_regmap_lookup_by_phandle(struct udevice *dev,
+ const char *name);
+
+/**
* syscon_get_first_range() - get the first memory range from a syscon regmap
*
* @driver_data: Driver data value to look up