[05/11] drm/bridge: analogix-anx78xx: correct value of TX_P0
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Message ID 20190815004854.19860-6-masneyb@onstation.org
State New
Headers show
Series
  • ARM: dts: qcom: msm8974: add support for external display
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Commit Message

Brian Masney Aug. 15, 2019, 12:48 a.m. UTC
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@onstation.org>
---
 drivers/gpu/drm/bridge/analogix-anx78xx.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Linus Walleij Aug. 15, 2019, 8:24 a.m. UTC | #1
On Thu, Aug 15, 2019 at 2:49 AM Brian Masney <masneyb@onstation.org> wrote:

> 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@onstation.org>

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

Yours,
Linus Walleij

Patch
diff mbox series

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