From 36b53581fe0dc2e25b67de4e58920307f22d195a Mon Sep 17 00:00:00 2001
From: Jernej Skrabec <jernej.skrabec@siol.net>
Date: Tue, 9 Feb 2021 18:58:58 +0100
Subject: drm/sun4i: dw-hdmi: always set clock rate
Git-commit: 36b53581fe0dc2e25b67de4e58920307f22d195a
Patch-mainline: v5.11
References: bsc#1152472

As expected, HDMI controller clock should always match pixel clock. In
the past, changing HDMI controller rate would seemingly worsen
situation. However, that was the result of other bugs which are now
fixed.

Fix that by removing set_rate quirk and always set clock rate.

Fixes: 40bb9d3147b2 ("drm/sun4i: Add support for H6 DW HDMI controller")
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Tested-by: Andre Heider <a.heider@gmail.com>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210209175900.7092-4-jernej.skrabec@siol.net
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c |    4 +---
 drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h |    1 -
 2 files changed, 1 insertion(+), 4 deletions(-)

--- a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
+++ b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
@@ -21,8 +21,7 @@ static void sun8i_dw_hdmi_encoder_mode_s
 {
 	struct sun8i_dw_hdmi *hdmi = encoder_to_sun8i_dw_hdmi(encoder);
 
-	if (hdmi->quirks->set_rate)
-		clk_set_rate(hdmi->clk_tmds, mode->crtc_clock * 1000);
+	clk_set_rate(hdmi->clk_tmds, mode->crtc_clock * 1000);
 }
 
 static const struct drm_encoder_helper_funcs
@@ -251,7 +250,6 @@ static int sun8i_dw_hdmi_remove(struct p
 
 static const struct sun8i_dw_hdmi_quirks sun8i_a83t_quirks = {
 	.mode_valid = sun8i_dw_hdmi_mode_valid_a83t,
-	.set_rate = true,
 };
 
 static const struct sun8i_dw_hdmi_quirks sun50i_h6_quirks = {
--- a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h
+++ b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h
@@ -177,7 +177,6 @@ struct sun8i_hdmi_phy {
 struct sun8i_dw_hdmi_quirks {
 	enum drm_mode_status (*mode_valid)(struct drm_connector *connector,
 					   const struct drm_display_mode *mode);
-	unsigned int set_rate : 1;
 };
 
 struct sun8i_dw_hdmi {