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[3/3] board: ti: am62x: evm: Update simple-framebuffer node in device-tree

Message ID 20240925151354.480704-4-devarsht@ti.com
State Accepted
Commit 7aa6906dda0d0936c91f14684df7c011b31b6435
Delegated to: Anatolij Gustschin
Headers show
Series Simple-framebuffer node related updates | expand

Commit Message

Devarsh Thakkar Sept. 25, 2024, 3:13 p.m. UTC 
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 <devarsht@ti.com>
---
 board/ti/am62x/evm.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
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Patch

diff --git a/board/ti/am62x/evm.c b/board/ti/am62x/evm.c
index 9bdd0223cdb6..be0447f6e9ea 100644
--- a/board/ti/am62x/evm.c
+++ b/board/ti/am62x/evm.c
@@ -16,6 +16,7 @@ 
 #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>
@@ -162,3 +163,23 @@  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 (IS_ENABLED(CONFIG_VIDEO) && IS_ENABLED(CONFIG_OF_LIBFDT)) {
+		if (ret && video_is_active())
+			return fdt_add_fb_mem_rsv(blob);
+	}
+
+	return 0;
+}
+#endif