linux-kernel - [RESEND] drm: bridge: adv7511: Fix low refresh rate register for ADV7533/5

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Message-ID: <20200407090457.24493-1-bogdan.togorean@analog.com>
Date:   Tue, 7 Apr 2020 12:04:55 +0300
From:   Bogdan Togorean <bogdan.togorean@...log.com>
To:     <dri-devel@...ts.freedesktop.org>
CC:     Bogdan Togorean <bogdan.togorean@...log.com>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Matt Redfearn <matt.redfearn@...nci.com>,
        Rob Clark <robdclark@...omium.org>,
        Sam Ravnborg <sam@...nborg.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        <linux-kernel@...r.kernel.org>
Subject: [RESEND] drm: bridge: adv7511: Fix low refresh rate register for ADV7533/5

For ADV7533 and ADV7535 low refresh rate is selected using
bits [3:2] of 0x4a main register.
So depending on ADV model write 0xfb or 0x4a register.

Fixes: 9c8af882bf12: ("drm: Add adv7511 encoder driver")
Signed-off-by: Bogdan Togorean <bogdan.togorean@...log.com>
---
 drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
index 87b58c1acff4..2a8fd2b27f0d 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
@@ -756,8 +756,13 @@ static void adv7511_mode_set(struct adv7511 *adv7511,
 	else
 		low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE;
 
-	regmap_update_bits(adv7511->regmap, 0xfb,
-		0x6, low_refresh_rate << 1);
+	if (adv7511->type == ADV7511)
+		regmap_update_bits(adv7511->regmap, 0xfb,
+			0x6, low_refresh_rate << 1);
+	else
+		regmap_update_bits(adv7511->regmap, 0x4a,
+			0xc, low_refresh_rate << 2);
+
 	regmap_update_bits(adv7511->regmap, 0x17,
 		0x60, (vsync_polarity << 6) | (hsync_polarity << 5));
 
-- 
2.17.1