From c58d6d1b6652b0a8db4aef7e93fb21ee869b5387 Mon Sep 17 00:00:00 2001 From: Vincent Abriou Date: Thu, 4 Jun 2015 13:59:02 +0200 Subject: [PATCH] drm/sti: vtg fix CEA-861E video format timing error HDMI analyzer tests showed that Vsync and Hsync signal were not compliant with the HDMI protocol. HDMI_DELAY should be taken into account in the VTG Vsync programming to reflect the 6 pixels shift introduced in the VTG Hsync programming. Signed-off-by: Vincent Abriou --- drivers/gpu/drm/sti/sti_vtg.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/sti/sti_vtg.c b/drivers/gpu/drm/sti/sti_vtg.c index df855baffe74..aa8097137701 100644 --- a/drivers/gpu/drm/sti/sti_vtg.c +++ b/drivers/gpu/drm/sti/sti_vtg.c @@ -173,8 +173,11 @@ static void vtg_set_mode(struct sti_vtg *vtg, tmp |= 1; writel(tmp, vtg->regs + VTG_TOP_V_VD_1); writel(tmp, vtg->regs + VTG_BOT_V_VD_1); - writel(0, vtg->regs + VTG_TOP_V_HD_1); - writel(0, vtg->regs + VTG_BOT_V_HD_1); + + tmp = HDMI_DELAY << 16; + tmp |= HDMI_DELAY; + writel(tmp, vtg->regs + VTG_TOP_V_HD_1); + writel(tmp, vtg->regs + VTG_BOT_V_HD_1); /* prepare VTG set 2 for for HD DCS */ tmp = (mode->hsync_end - mode->hsync_start) << 16; -- GitLab