[PATCH v2] drm/imx: Match imx-ipuv3-crtc components using device node in platform data

[Fabio Estevam]

On Wed, May 18, 2016 at 9:56 AM, Philipp Zabel <p.zabel at pengutronix.de> wrote:
> The component master driver imx-drm-core matches component devices using
> their of_node. Since commit 950b410dd1ab ("gpu: ipu-v3: Fix imx-ipuv3-crtc
> module autoloading"), the imx-ipuv3-crtc dev->of_node is not set during
> probing. Before that, of_node was set and caused an of: modalias to be
> used instead of the platform: modalias, which broke module autoloading.
>
> On the other hand, if dev->of_node is not set yet when the imx-ipuv3-crtc
> probe function calls component_add, component matching in imx-drm-core
> fails. While dev->of_node will be set once the next component tries to
> bring up the component master, imx-drm-core component binding will never
> succeed if one of the crtc devices is probed last.
>
> Add of_node to the component platform data and match against the
> pdata->of_node instead of dev->of_node in imx-drm-core to work around
> this problem.
>
> Cc: <stable at vger.kernel.org> # 4.4.x
> Fixes: 950b410dd1ab ("gpu: ipu-v3: Fix imx-ipuv3-crtc module autoloading")
> Signed-off-by: Philipp Zabel <p.zabel at pengutronix.de>

Thanks, Philipp. With this patch HDMI is functional again:

Tested-by: Fabio Estevam <fabio.estevam at nxp.com>