Patch "ARM: dts: armadillo800eva: Split LCD mux and gpio" has been added to the 4.9-stable tree

Patch "ARM: dts: armadillo800eva: Split LCD mux and gpio" 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

    ARM: dts: armadillo800eva: Split LCD mux and gpio

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:
     arm-dts-armadillo800eva-split-lcd-mux-and-gpio.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 Mon Apr  9 17:09:24 CEST 2018
From: Geert Uytterhoeven <geert+renesas@glider.be>
Date: Thu, 1 Jun 2017 12:27:00 +0200
Subject: ARM: dts: armadillo800eva: Split LCD mux and gpio

From: Geert Uytterhoeven <geert+renesas@glider.be>


[ Upstream commit 13132b3f44d3600983aceb7e9920b8ebb55a7cf8 ]

Configuration of the lcd0 pinmux group and GPIO hog for the external
GPIO mux are done using a single device node, causing the "output-high"
property to be applied to both.  This will fail for the pinmux group,
but doesn't cause any harm, as the failure is ignored silently.

However, after "pinctrl: sh-pfc: propagate errors on group config", the
failure will become fatal, leading to a broken display:

    sh-pfc e6050000.pin-controller: pin_config_group_set op failed for group 102
    sh-pfc e6050000.pin-controller: Error applying setting, reverse things back
    sh-pfc e6050000.pin-controller: failed to select default state

Move the GPIO hog to its own node to fix this.

Fixes: ffd2f9a5afb730b9 ("ARM: shmobile: armadillo800eva dts: Add pinctrl and gpio-hog for lcdc0")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm/boot/dts/r8a7740-armadillo800eva.dts |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
+++ b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
@@ -266,7 +266,9 @@
 	lcd0_pins: lcd0 {
 		groups = "lcd0_data24_0", "lcd0_lclk_1", "lcd0_sync";
 		function = "lcd0";
+	};
 
+	lcd0_mux {
 		/* DBGMD/LCDC0/FSIA MUX */
 		gpio-hog;
 		gpios = <176 0>;


Patches currently in stable-queue which might be from geert+renesas@glider.be are

queue-4.9/acpi-ec-fix-debugfs_create_-usage.patch
queue-4.9/serial-sh-sci-fix-race-condition-causing-garbage-during-shutdown.patch
queue-4.9/clk-renesas-rcar-gen2-fix-pll0-on-r-car-v2h-and-e2.patch
queue-4.9/sh_eth-use-platform-device-for-printing-before-register_netdev.patch
queue-4.9/arm-dts-armadillo800eva-split-lcd-mux-and-gpio.patch