Patch "drm/sun4i: Set drm_crtc.port to the underlying TCON's output port node" has been added to the 4.9-stable tree

Patch "drm/sun4i: Set drm_crtc.port to the underlying TCON's output port node" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    drm/sun4i: Set drm_crtc.port to the underlying TCON's output port node

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-sun4i-set-drm_crtc.port-to-the-underlying-tcon-s-output-port-node.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Sun Mar 18 16:55:33 CET 2018
From: Chen-Yu Tsai <wens@csie.org>
Date: Thu, 23 Feb 2017 16:05:34 +0800
Subject: drm/sun4i: Set drm_crtc.port to the underlying TCON's output port node

From: Chen-Yu Tsai <wens@csie.org>


[ Upstream commit 7544860733d158e3edbf309f27e79e258c8f66bd ]

The way drm_of_find_possible_crtcs works is it tries to match the
remote-endpoint of the given node's various endpoints to all the
crtc's .port field. Thus we need to set drm_crtc.port to the output
port node of the underlying TCON.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/sun4i/sun4i_crtc.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/drivers/gpu/drm/sun4i/sun4i_crtc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
@@ -19,6 +19,7 @@
 #include <linux/clk-provider.h>
 #include <linux/ioport.h>
 #include <linux/of_address.h>
+#include <linux/of_graph.h>
 #include <linux/of_irq.h>
 #include <linux/regmap.h>
 
@@ -136,5 +137,9 @@ struct sun4i_crtc *sun4i_crtc_init(struc
 
 	drm_crtc_helper_add(&scrtc->crtc, &sun4i_crtc_helper_funcs);
 
+	/* Set crtc.port to output port node of the tcon */
+	scrtc->crtc.port = of_graph_get_port_by_id(drv->tcon->dev->of_node,
+						   1);
+
 	return scrtc;
 }


Patches currently in stable-queue which might be from wens@csie.org are

queue-4.9/drm-sun4i-fix-up-error-path-cleanup-for-master-bind-function.patch
queue-4.9/drm-sun4i-set-drm_crtc.port-to-the-underlying-tcon-s-output-port-node.patch
queue-4.9/drm-sun4i-fix-tcon-clock-and-regmap-initialization-sequence.patch
queue-4.9/clk-sunxi-ng-a33-add-offset-and-minimum-value-for-ddr1-pll-n-factor.patch