From 831adffb3b7b8df4c8e20b7b00843129fb87a166 Mon Sep 17 00:00:00 2001
From: Jernej Skrabec <jernej.skrabec@siol.net>
Date: Tue, 14 May 2019 22:43:37 +0200
Subject: [PATCH] drm/sun4i: Fix sun8i HDMI PHY configuration for > 148.5 MHz
Git-commit: 831adffb3b7b8df4c8e20b7b00843129fb87a166
Patch-mainline: v5.2-rc2
References: bsc#1111666
Vendor provided documentation says that EMP bits should be set to 3 for
pixel clocks greater than 148.5 MHz.
Fix that.
Cc: stable@vger.kernel.org # 4.17+
Fixes: 4f86e81748fe ("drm/sun4i: Add support for H3 HDMI PHY variant")
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190514204337.11068-3-jernej.skrabec@siol.net
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c b/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c
index afc6d4a9c20b..43643ad31730 100644
--- a/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c
+++ b/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c
@@ -293,7 +293,8 @@ static int sun8i_hdmi_phy_config_h3(struct dw_hdmi *hdmi,
SUN8I_HDMI_PHY_ANA_CFG2_REG_BIGSW |
SUN8I_HDMI_PHY_ANA_CFG2_REG_SLV(4);
ana_cfg3_init |= SUN8I_HDMI_PHY_ANA_CFG3_REG_AMPCK(9) |
- SUN8I_HDMI_PHY_ANA_CFG3_REG_AMP(13);
+ SUN8I_HDMI_PHY_ANA_CFG3_REG_AMP(13) |
+ SUN8I_HDMI_PHY_ANA_CFG3_REG_EMP(3);
}
regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
--
2.16.4