[PATCH 1/2] drm: renesas: rzg2l_mipi_dsi: Use fsleep() for 1ms delay in D-PHY init

From: Biju

Date: Tue Mar 17 2026 - 08:36:46 EST


From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>

Replace udelay(1) with fsleep(1000) in rzg2l_mipi_dsi_dphy_init() to
follow the power-on sequence described in Figure 34.5 of section
"34.4.2.1 Reset" of the RZ/G2L hardware manual Rev.1.50 May 2025.

Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
index a87a301326c7..e53b48e4de56 100644
--- a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
+++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
@@ -528,7 +528,7 @@ static int rzg2l_mipi_dsi_dphy_init(struct rzg2l_mipi_dsi *dsi,
if (ret < 0)
return ret;

- udelay(1);
+ fsleep(1000);

return 0;
}
--
2.43.0