linux-kernel - [PATCH 05/11] drm/bridge: analogix-anx78xx: correct value of TX

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Date:   Wed, 14 Aug 2019 20:48:48 -0400
From:   Brian Masney <masneyb@...tation.org>
To:     bjorn.andersson@...aro.org, robh+dt@...nel.org, agross@...nel.org,
        a.hajda@...sung.com, narmstrong@...libre.com, robdclark@...il.com,
        sean@...rly.run
Cc:     airlied@...ux.ie, daniel@...ll.ch, mark.rutland@....com,
        Laurent.pinchart@...asonboard.com, jonas@...boo.se,
        jernej.skrabec@...l.net, linus.walleij@...aro.org,
        enric.balletbo@...labora.com, dri-devel@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        freedreno@...ts.freedesktop.org
Subject: [PATCH 05/11] drm/bridge: analogix-anx78xx: correct value of TX_P0

When attempting to configure this driver on a Nexus 5 phone (msm8974),
setting up the dummy i2c bus for TX_P0 would fail due to an -EBUSY
error. The downstream MSM kernel sources [1] shows that the proper value
for TX_P0 is 0x78, not 0x70, so correct the value to allow device
probing to succeed.

[1] https://github.com/AICP/kernel_lge_hammerhead/blob/n7.1/drivers/video/slimport/slimport_tx_reg.h

Signed-off-by: Brian Masney <masneyb@...tation.org>
---
 drivers/gpu/drm/bridge/analogix-anx78xx.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/analogix-anx78xx.h b/drivers/gpu/drm/bridge/analogix-anx78xx.h
index 25e063bcecbc..bc511fc605c9 100644
--- a/drivers/gpu/drm/bridge/analogix-anx78xx.h
+++ b/drivers/gpu/drm/bridge/analogix-anx78xx.h
@@ -6,7 +6,7 @@
 #ifndef __ANX78xx_H
 #define __ANX78xx_H
 
-#define TX_P0				0x70
+#define TX_P0				0x78
 #define TX_P1				0x7a
 #define TX_P2				0x72
 
-- 
2.21.0