This is a note to let you know that I've just added the patch titled
ARM: dts: imx6qdl-wandboard: Fix audio channel swap
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: arm-dts-imx6qdl-wandboard-fix-audio-channel-swap.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: Fabio Estevam fabio.estevam@nxp.com Date: Sun, 14 May 2017 11:50:50 -0300 Subject: ARM: dts: imx6qdl-wandboard: Fix audio channel swap
From: Fabio Estevam fabio.estevam@nxp.com
[ Upstream commit 79935915300c5eb88a0e94fa9148a7505c14a02a ]
When running a stress playback/stop loop test on a mx6wandboard channel swaps can be noticed randomly.
Increasing the SGTL5000 LRCLK pad strength to its maximum value fixes the issue, so add the 'lrclk-strength' property to avoid the audio channel swaps.
Signed-off-by: Fabio Estevam fabio.estevam@nxp.com Signed-off-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm/boot/dts/imx6qdl-wandboard.dtsi | 1 + 1 file changed, 1 insertion(+)
--- a/arch/arm/boot/dts/imx6qdl-wandboard.dtsi +++ b/arch/arm/boot/dts/imx6qdl-wandboard.dtsi @@ -88,6 +88,7 @@ clocks = <&clks IMX6QDL_CLK_CKO>; VDDA-supply = <®_2p5v>; VDDIO-supply = <®_3p3v>; + lrclk-strength = <3>; }; };
Patches currently in stable-queue which might be from fabio.estevam@nxp.com are
queue-4.9/arm-dts-imx6qdl-wandboard-fix-audio-channel-swap.patch queue-4.9/net-fec-add-a-fec_enet_clear_ethtool_stats-stub-for-config_m5272.patch queue-4.9/arm-dts-imx53-qsrb-pulldown-pmic-irq-pin.patch queue-4.9/arm-imx-add-mxc_cpu_imx6ull-and-cpu_is_imx6ull.patch