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%3Ba=su...

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