linux-kernel - [PATCH 2/6] ARM: dts: imx6q{dl}: fix the pin conflict between SPI and WEIM

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Date:	Mon, 20 May 2013 16:48:58 +0800
From:	Huang Shijie <b32955@...escale.com>
To:	<grant.likely@...aro.org>
CC:	<rob.herring@...xeda.com>, <arnd@...db.de>,
	<devicetree-discuss@...ts.ozlabs.org>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <shawn.guo@...aro.org>,
	Huang Shijie <b32955@...escale.com>
Subject: [PATCH 2/6] ARM: dts: imx6q{dl}: fix the pin conflict between SPI and WEIM

In the imx6q-sabreauto and imx6dl-sabreauto boards,
the pin MX6Q{DL}_PAD_EIM_D19 is used as a GPIO for SPI NOR, but
it is used as a data pin for the WEIM NOR.

In order to fix the conflict, this patch removes the pin from the hog,
and adds a new pinctrl item: pinctrl_ecspi1_2.

The SPI NOR selects this pinctrl_ecspi1_2 when it is enabled.

Signed-off-by: Huang Shijie <b32955@...escale.com>
---
 arch/arm/boot/dts/imx6dl-sabreauto.dts   |    9 ++++++++-
 arch/arm/boot/dts/imx6q-sabreauto.dts    |    9 ++++++++-
 arch/arm/boot/dts/imx6qdl-sabreauto.dtsi |    2 +-
 3 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/imx6dl-sabreauto.dts b/arch/arm/boot/dts/imx6dl-sabreauto.dts
index 60f3038..7695f70 100644
--- a/arch/arm/boot/dts/imx6dl-sabreauto.dts
+++ b/arch/arm/boot/dts/imx6dl-sabreauto.dts
@@ -25,7 +25,14 @@
 			fsl,pins = <
 				MX6DL_PAD_NANDF_CS2__GPIO6_IO15 0x80000000
 				MX6DL_PAD_SD2_DAT2__GPIO1_IO13  0x80000000
-				MX6DL_PAD_EIM_D19__GPIO3_IO19 	0x80000000
+			>;
+		};
+	};
+
+	ecspi1 {
+		pinctrl_ecspi1_2: ecspi1grp-2 {
+			fsl,pins = <
+				MX6DL_PAD_EIM_D19__GPIO3_IO19  0x80000000
 			>;
 		};
 	};
diff --git a/arch/arm/boot/dts/imx6q-sabreauto.dts b/arch/arm/boot/dts/imx6q-sabreauto.dts
index 9fb3e99..67a3a6b 100644
--- a/arch/arm/boot/dts/imx6q-sabreauto.dts
+++ b/arch/arm/boot/dts/imx6q-sabreauto.dts
@@ -29,7 +29,14 @@
 			fsl,pins = <
 				MX6Q_PAD_NANDF_CS2__GPIO6_IO15 0x80000000
 				MX6Q_PAD_SD2_DAT2__GPIO1_IO13  0x80000000
-				MX6Q_PAD_EIM_D19__GPIO3_IO19   0x80000000
+			>;
+		};
+	};
+
+	ecspi1 {
+		pinctrl_ecspi1_2: ecspi1grp-2 {
+			fsl,pins = <
+				MX6Q_PAD_EIM_D19__GPIO3_IO19  0x80000000
 			>;
 		};
 	};
diff --git a/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi b/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
index d6baa51..eb293f5 100644
--- a/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
@@ -20,7 +20,7 @@
 	fsl,spi-num-chipselects = <1>;
 	cs-gpios = <&gpio3 19 0>;
 	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_ecspi1_1>;
+	pinctrl-0 = <&pinctrl_ecspi1_1 &pinctrl_ecspi1_2>;
 	status = "disabled"; /* pin conflict with WEIM NOR */
 
 	flash: m25p80@0 {
-- 
1.7.1


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