dm: syscon: Add support for of-platdata
Provide a new function which can cope with obtaining information from
of-platdata instead of the device tree.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/core/syscon-uclass.c b/drivers/core/syscon-uclass.c
index e03f46a..01bd968 100644
--- a/drivers/core/syscon-uclass.c
+++ b/drivers/core/syscon-uclass.c
@@ -29,7 +29,20 @@
{
struct syscon_uc_info *priv = dev_get_uclass_priv(dev);
+ /*
+ * With OF_PLATDATA we really have no way of knowing the format of
+ * the device-specific platform data. So we assume that it starts with
+ * a 'reg' member, and this holds a single address and size. Drivers
+ * using OF_PLATDATA will need to ensure that this is true.
+ */
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+ struct syscon_base_platdata *plat = dev_get_platdata(dev);
+
+ return regmap_init_mem_platdata(dev, plat->reg, ARRAY_SIZE(plat->reg),
+ &priv->regmap);
+#else
return regmap_init_mem(dev, &priv->regmap);
+#endif
}
int syscon_get_by_driver_data(ulong driver_data, struct udevice **devp)