linux-kernel - [PATCH 5.0 063/137] drm: bridge: dw-hdmi: Fix overflow workaround for Rockchip SoCs

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Message-Id: <20190515090658.041220026@linuxfoundation.org>
Date:   Wed, 15 May 2019 12:55:44 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jonas Karlman <jonas@...boo.se>,
        Heiko Stueber <heiko@...ech.de>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.0 063/137] drm: bridge: dw-hdmi: Fix overflow workaround for Rockchip SoCs

[ Upstream commit d15d9fd02575ecfada92d42f655940c4f10af842 ]

The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have
also been identified as needing this workaround with a single iteration.

Fixes: be41fc55f1aa ("drm: bridge: dw-hdmi: Handle overflow workaround based on device version")
Signed-off-by: Jonas Karlman <jonas@...boo.se>
Tested-by: Heiko Stueber <heiko@...ech.de>
Signed-off-by: Andrzej Hajda <a.hajda@...sung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/AM3PR03MB0966818FAAAE6192FF4ED11AAC7D0@AM3PR03MB0966.eurprd03.prod.outlook.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 64c3cf0275182..14223c0ee7843 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -1655,6 +1655,8 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
 	 * iteration for others.
 	 * The Amlogic Meson GX SoCs (v2.01a) have been identified as needing
 	 * the workaround with a single iteration.
+	 * The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have
+	 * been identified as needing the workaround with a single iteration.
 	 */
 
 	switch (hdmi->version) {
@@ -1663,7 +1665,9 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
 		break;
 	case 0x131a:
 	case 0x132a:
+	case 0x200a:
 	case 0x201a:
+	case 0x211a:
 	case 0x212a:
 		count = 1;
 		break;
-- 
2.20.1