Update simple-framebuffer device-tree node by enumerating framebuffer
related information in existing simple-framebuffer node in Linux
device-tree file and enabling it.

In case there is no simple-framebuffer stub detected in Linux kernel
device-tree and video is still active, then update the device-tree to
reserve the framebuffer region for the active splash screen.

This helps preserve the splash screen till the display server takes over
after OS is booted.

Signed-off-by: Devarsh Thakkar <devar...@ti.com>
---
 board/ti/am62x/evm.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/board/ti/am62x/evm.c b/board/ti/am62x/evm.c
index 88e02155ee..c825af3368 100644
--- a/board/ti/am62x/evm.c
+++ b/board/ti/am62x/evm.c
@@ -15,6 +15,7 @@
 #include <cpu_func.h>
 #include <k3-ddrss.h>
 #include <fdt_support.h>
+#include <fdt_simplefb.h>
 #include <asm/io.h>
 #include <asm/arch/hardware.h>
 #include <dm/uclass.h>
@@ -118,3 +119,21 @@ void spl_perform_fixups(struct spl_image_info *spl_image)
 #endif
 }
 #endif
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+int ft_board_setup(void *blob, struct bd_info *bd)
+{
+       int ret = -1;
+
+       if (IS_ENABLED(CONFIG_FDT_SIMPLEFB))
+               ret = fdt_simplefb_enable_and_mem_rsv(blob);
+
+       /* If simplefb is not enabled and video is active, then at least reserve
+        * the framebuffer region to preserve the splash screen while OS is 
booting
+        */
+       if (ret && video_is_active())
+               return fdt_add_fb_mem_rsv(blob);
+
+       return 0;
+}
+#endif
-- 
2.34.1

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