[PATCH v6 11/18] video: tegra20: dc: clean framebuffer memory block

Svyatoslav Ryhel
2024-01-23T17:19:15Z

From: Jonas Schwöbel <jonasschwoebel@yahoo.de>

Fill the framebuffer memory with zeros to avoid visual glitches.

Signed-off-by: Jonas Schwöbel <jonasschwoebel@yahoo.de>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/video/tegra20/tegra-dc.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/video/tegra20/tegra-dc.c b/drivers/video/tegra20/tegra-dc.c
index ac6833229a..caeec94468 100644
--- a/drivers/video/tegra20/tegra-dc.c
+++ b/drivers/video/tegra20/tegra-dc.c
@@ -4,6 +4,7 @@
*/

#include <backlight.h>
+#include <cpu_func.h>
#include <dm.h>
#include <fdtdec.h>
#include <log.h>
@@ -398,6 +399,10 @@ static int tegra_lcd_probe(struct udevice *dev)
priv->scdiv = dc_plat->scdiv;
}

+ /* Clean the framebuffer area */
+ memset((u8 *)plat->base, 0, plat->size);
+ flush_dcache_all();
+
if (tegra_display_probe(priv, (void *)plat->base)) {
debug("%s: Failed to probe display driver\n", __func__);
return -1;
--
2.40.1