apalis_imx6: unify sd/mmc drive strength with linux kernel settings

[oweals/u-boot.git] / include / syscon.h

diff --git a/include/syscon.h b/include/syscon.h
index 5d52b1cc3c3d0a7d86bd54cf32383641fe7966f7..3df96e32764cd681d88804dc1dd0b9107ac4be0b 100644 (file)
--- a/include/syscon.h
+++ b/include/syscon.h
@@ -1,13 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (c) 2015 Google, Inc
  * Written by Simon Glass <sjg@chromium.org>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #ifndef __SYSCON_H
 #define __SYSCON_H
 
+#include <dm/ofnode.h>
 #include <fdtdec.h>
 
 /**
@@ -73,6 +73,19 @@ 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
  *
@@ -82,4 +95,11 @@ struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data);
  */
 void *syscon_get_first_range(ulong driver_data);
 
+/**
+ * syscon_node_to_regmap - get regmap from syscon
+ *
+ * @node:              Device node of syscon
+ */
+struct regmap *syscon_node_to_regmap(ofnode node);
+
 #endif