This is a note to let you know that I've just added the patch titled
arm64: dts: imx8mm-kontron: Fix polarity of reg_rst_eth2
to the 5.14-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:
arm64-dts-imx8mm-kontron-fix-polarity-of-reg_rst_eth2.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6562d6e350284307e33ea10c7f46a6661ff22770 Mon Sep 17 00:00:00 2001
From: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx>
Date: Fri, 15 Oct 2021 14:48:38 +0200
Subject: arm64: dts: imx8mm-kontron: Fix polarity of reg_rst_eth2
From: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx>
commit 6562d6e350284307e33ea10c7f46a6661ff22770 upstream.
The regulator reg_rst_eth2 should keep the reset signal of the USB ethernet
adapter deasserted anytime. Fix the polarity and mark it as always-on.
Anyway, using the regulator is only a workaround for the missing support of
specifying a reset GPIO for USB devices in a generic way. As we don't
have a solution for this at the moment, at least fix the current
workaround.
Fixes: 8668d8b2e67f ("arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx>
Signed-off-by: Shawn Guo <shawnguo@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts
@@ -70,7 +70,9 @@
regulator-name = "rst-usb-eth2";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usb_eth2>;
- gpio = <&gpio3 2 GPIO_ACTIVE_LOW>;
+ gpio = <&gpio3 2 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ regulator-always-on;
};
reg_vdd_5v: regulator-5v {
Patches currently in stable-queue which might be from frieder.schrempf@xxxxxxxxxx are
queue-5.14/arm64-dts-imx8mm-kontron-fix-polarity-of-reg_rst_eth2.patch
queue-5.14/arm64-dts-imx8mm-kontron-fix-connection-type-for-vsc8531-rgmii-phy.patch
queue-5.14/arm64-dts-imx8mm-kontron-make-sure-soc-and-dram-supply-voltages-are-correct.patch
queue-5.14/arm64-dts-imx8mm-kontron-set-lower-limit-of-vdd_snvs-to-800-mv.patch
queue-5.14/arm64-dts-imx8mm-kontron-fix-can-spi-clock-frequency.patch
