Merge tag 'xilinx-for-v2021.04' of https://gitlab.denx.de/u-boot/custodians/u-boot-microblaze into next

Xilinx changes for v2021.04

arm64:
- DT updates

microblaze:
- Add support for NOR device support

spi:
- Fix unaligned data write issue

nand:
- Minor code change

xilinx:
- Fru fix in limit calculation
- Fill git repo link for all Xilinx boards

video:
- Add support for seps525 spi display

tools:
- Minor Vitis file support

cmd/common
- Minor code indentation fixes

serial:
- Uartlite debug uart initialization fix

1 files changed, 16 insertions, 6 deletions

diff --git a/include/video.h b/include/video.h
index 7b7f62a8277..74d822fadbb 100644
--- a/include/video.h
+++ b/include/video.h
@@ -114,8 +114,16 @@ struct video_priv {
 	u8 bg_col_idx;
 };
 
-/* Placeholder - there are no video operations at present */
+/**
+ * struct video_ops - structure for keeping video operations
+ * @video_sync: Synchronize FB with device. Some device like SPI based LCD
+ *		displays needs synchronization when data in an FB is available.
+ *		For these devices implement video_sync hook to call a sync
+ *		function. vid is pointer to video device udevice. Function
+ *		should return 0 on success video_sync and error code otherwise
+ */
 struct video_ops {
+	int (*video_sync)(struct udevice *vid);
 };
 
 #define video_get_ops(dev)        ((struct video_ops *)(dev)->driver->ops)
@@ -151,15 +159,17 @@ int video_clear(struct udevice *dev);
 /**
  * video_sync() - Sync a device's frame buffer with its hardware
  *
+ * @vid:	Device to sync
+ * @force:	True to force a sync even if there was one recently (this is
+ *		very expensive on sandbox)
+ *
+ * @return: 0 on success, error code otherwise
+ *
  * Some frame buffers are cached or have a secondary frame buffer. This
  * function syncs these up so that the current contents of the U-Boot frame
  * buffer are displayed to the user.
- *
- * @dev:	Device to sync
- * @force:	True to force a sync even if there was one recently (this is
- *		very expensive on sandbox)
  */
-void video_sync(struct udevice *vid, bool force);
+int video_sync(struct udevice *vid, bool force);
 
 /**
  * video_sync_all() - Sync all devices' frame buffers with there hardware