From eb0ed2ad33e740ac8b0d7211b24e1ddd543c2519 Mon Sep 17 00:00:00 2001 From: Marcus Folkesson Date: Sat, 13 Sep 2025 08:09:40 +0200 Subject: [PATCH] drm/sitronix/st7571-i2c: reset position before clearing display We cannot know where the write pointer is, always reset position to (0,0) before clearing display. Signed-off-by: Marcus Folkesson Reviewed-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20250913-st7571-reset-v1-1-ae5f58acdf8d@gmail.com Signed-off-by: Javier Martinez Canillas --- drivers/gpu/drm/sitronix/st7571-i2c.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/sitronix/st7571-i2c.c b/drivers/gpu/drm/sitronix/st7571-i2c.c index a6c4a6738dedf..32b91d65b768b 100644 --- a/drivers/gpu/drm/sitronix/st7571-i2c.c +++ b/drivers/gpu/drm/sitronix/st7571-i2c.c @@ -263,6 +263,7 @@ static int st7571_fb_clear_screen(struct st7571_device *st7571) u32 npixels = st7571->ncols * round_up(st7571->nlines, ST7571_PAGE_HEIGHT) * st7571->bpp; char pixelvalue = 0x00; + st7571_set_position(st7571, 0, 0); for (int i = 0; i < npixels; i++) regmap_bulk_write(st7571->regmap, ST7571_DATA_MODE, &pixelvalue, 1); -- 2.47.3