linux-kernel - [PATCH] gpu: ipu-v3: display support on the aristainetos2 board broken

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Date:	Fri, 20 May 2016 13:15:48 +0200
From:	Heiko Schocher <hs@...x.de>
To:	linux-kernel@...r.kernel.org
Cc:	Heiko Schocher <hs@...x.de>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	dri-devel@...ts.freedesktop.org, Dennis Gilmore <dennis@...il.us>,
	stable@...r.kernel.org, Dave Airlie <airlied@...hat.com>
Subject: [PATCH] gpu: ipu-v3: display support on the aristainetos2 board broken

commit 503fe87bd0a8 ("gpu: ipu-v3: Fix imx-ipuv3-crtc module autoloading")
breaks the aristainetos2 board with the "lg,lg4573" panel.

This reverts the above commit.

Signed-off-by: Heiko Schocher <hs@...x.de>

---
Any hint, how to bring back the display on the aristainetos2
board without reverting this commit would be appreciated.

Board DTS:
arch/arm/boot/dts/imx6qdl-aristainetos2.dtsi
arch/arm/boot/dts/imx6dl-aristainetos2_4.dts

see the log of a full automated "git bisect" session with tbot testcase:
https://github.com/hsdenx/tbot/blob/master/src/tc/board/tc_board_aristainetos2_linux_bisect.py
here:
http://xeidos.ddns.net/buildbot/builders/ari_lx_bi/builds/3/steps/shell/logs/tbotlog
for details.

 drivers/gpu/ipu-v3/ipu-common.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c
index abb98c7..e00db3f 100644
--- a/drivers/gpu/ipu-v3/ipu-common.c
+++ b/drivers/gpu/ipu-v3/ipu-common.c
@@ -1068,6 +1068,7 @@ static int ipu_add_client_devices(struct ipu_soc *ipu, unsigned long ipu_base)
 			goto err_register;
 		}
 
+		pdev->dev.of_node = of_node;
 		pdev->dev.parent = dev;
 
 		ret = platform_device_add_data(pdev, &reg->pdata,
@@ -1078,12 +1079,6 @@ static int ipu_add_client_devices(struct ipu_soc *ipu, unsigned long ipu_base)
 			platform_device_put(pdev);
 			goto err_register;
 		}
-
-		/*
-		 * Set of_node only after calling platform_device_add. Otherwise
-		 * the platform:imx-ipuv3-crtc modalias won't be used.
-		 */
-		pdev->dev.of_node = of_node;
 	}
 
 	return 0;
-- 
2.5.5