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mxs: fix user led for OLinuXino boards 

More testing after kernel upgrade to 5.4 uncovered a regression: the user
led is not present anymore due to a pin mux "collision" in device tree.

A patch sent to upstream kernel was accepted now. Integrate this
pending fix as platform specific patch so that user led is available again.

Signed-off-by: Michael Heimpold <mhei@heimpold.de>
master
Michael Heimpold 2020-03-16 22:47:44 +01:00 committed by Petr Štetiar
parent c48cf5ddb3
commit c8946a5baf
1 changed files with 61 additions and 0 deletions
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61
target/linux/mxs/patches-5.4/100-ARM-dts-imx23-introduce-mmc0_sck_cfg.patch Normal file
View File

@ -0,0 +1,61 @@
From e4fdac5def509ffb723b49d6a91f9043009119f9 Mon Sep 17 00:00:00 2001
From: Michael Heimpold <mhei@heimpold.de>
Date: Sun, 8 Mar 2020 23:21:44 +0100
Subject: [PATCH] ARM: dts: imx23: introduce mmc0_sck_cfg
The Olimex Olinuxino board has a user led connected to SSP1_DETECT.
But since this pin is listed in mmc0_pins_fixup, it is already claimed
by MMC driver and this results in this error during boot:
[ 1.390000] imx23-pinctrl 80018000.pinctrl: pin SSP1_DETECT already
requested by 80010000.spi; cannot claim for leds
[ 1.400000] imx23-pinctrl 80018000.pinctrl: pin-65 (leds) status -22
[ 1.410000] imx23-pinctrl 80018000.pinctrl: could not request pin 65
(SSP1_DETECT) from group led_gpio2_1.0 on device 80018000.pinctrl
[ 1.420000] leds-gpio leds: Error applying setting, reverse things back
[ 1.430000] leds-gpio: probe of leds failed with error -22
This fix it, introduce mmc0_sck_cfg and switch the Olinuxino board to it.
Signed-off-by: Michael Heimpold <mhei@heimpold.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---
arch/arm/boot/dts/imx23-olinuxino.dts | 2 +-
arch/arm/boot/dts/imx23.dtsi | 8 ++++++++
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx23-olinuxino.dts b/arch/arm/boot/dts/imx23-olinuxino.dts
index 4c9aafe00b5d..0729e72f2283 100644
--- a/arch/arm/boot/dts/imx23-olinuxino.dts
+++ b/arch/arm/boot/dts/imx23-olinuxino.dts
@@ -23,7 +23,7 @@
ssp0: spi@80010000 {
compatible = "fsl,imx23-mmc";
pinctrl-names = "default";
- pinctrl-0 = <&mmc0_4bit_pins_a &mmc0_pins_fixup>;
+ pinctrl-0 = <&mmc0_4bit_pins_a &mmc0_sck_cfg>;
bus-width = <4>;
broken-cd;
status = "okay";
diff --git a/arch/arm/boot/dts/imx23.dtsi b/arch/arm/boot/dts/imx23.dtsi
index eb0aeda1682c..c5edff381213 100644
--- a/arch/arm/boot/dts/imx23.dtsi
+++ b/arch/arm/boot/dts/imx23.dtsi
@@ -267,6 +267,14 @@
fsl,pull-up = <MXS_PULL_DISABLE>;
};
+ mmc0_sck_cfg: mmc0-sck-cfg@0 {
+ reg = <0>;
+ fsl,pinmux-ids = <
+ MX23_PAD_SSP1_SCK__SSP1_SCK
+ >;
+ fsl,pull-up = <MXS_PULL_DISABLE>;
+ };
+
mmc1_4bit_pins_a: mmc1-4bit@0 {
reg = <0>;
fsl,pinmux-ids = <
--
2.17.1