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From:   Philippe Schenker <philippe.schenker@toradex.com>
To:     Marcel Ziswiler <marcel.ziswiler@toradex.com>,
        Max Krummenacher <max.krummenacher@toradex.com>,
        "stefan@agner.ch" <stefan@agner.ch>,
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        Shawn Guo <shawnguo@kernel.org>,
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        =?iso-8859-2?Q?Michal_Vok=E1=E8?= <michal.vokac@ysoft.com>,
        Fabio Estevam <festevam@gmail.com>
CC:     Philippe Schenker <philippe.schenker@toradex.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
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        <linux-arm-kernel@lists.infradead.org>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        NXP Linux Team <linux-imx@nxp.com>,
        Sascha Hauer <s.hauer@pengutronix.de>
Subject: [PATCH v2 11/20] ARM: dts: imx6qdl-apalis: Add sleep state to can
 interfaces
Thread-Topic: [PATCH v2 11/20] ARM: dts: imx6qdl-apalis: Add sleep state to
 can interfaces
Thread-Index: AQHVR5zVGQZsOPv+o068E1JvmF98HA==
Date:   Wed, 31 Jul 2019 12:38:20 +0000
Message-ID: <20190731123750.25670-12-philippe.schenker@toradex.com>
References: <20190731123750.25670-1-philippe.schenker@toradex.com>
In-Reply-To: <20190731123750.25670-1-philippe.schenker@toradex.com>
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This patch prepares the devicetree for the new Ixora V1.2 where we are
able to turn off the supply of the can transceiver. This implies to use
a sleep state on transmission pins in order to prevent backfeeding.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>

---

Changes in v2:
- Changed commit title to '...imx6qdl-apalis:...'

 arch/arm/boot/dts/imx6qdl-apalis.dtsi | 27 +++++++++++++++++++++------
 1 file changed, 21 insertions(+), 6 deletions(-)

diff --git a/arch/arm/boot/dts/imx6qdl-apalis.dtsi b/arch/arm/boot/dts/imx6=
qdl-apalis.dtsi
index 7c4ad541c3f5..59ed2e4a1fd1 100644
--- a/arch/arm/boot/dts/imx6qdl-apalis.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
@@ -148,14 +148,16 @@
 };
=20
 &can1 {
-	pinctrl-names =3D "default";
-	pinctrl-0 =3D <&pinctrl_flexcan1>;
+	pinctrl-names =3D "default", "sleep";
+	pinctrl-0 =3D <&pinctrl_flexcan1_default>;
+	pinctrl-1 =3D <&pinctrl_flexcan1_sleep>;
 	status =3D "disabled";
 };
=20
 &can2 {
-	pinctrl-names =3D "default";
-	pinctrl-0 =3D <&pinctrl_flexcan2>;
+	pinctrl-names =3D "default", "sleep";
+	pinctrl-0 =3D <&pinctrl_flexcan2_default>;
+	pinctrl-1 =3D <&pinctrl_flexcan2_sleep>;
 	status =3D "disabled";
 };
=20
@@ -599,19 +601,32 @@
 		>;
 	};
=20
-	pinctrl_flexcan1: flexcan1grp {
+	pinctrl_flexcan1_default: flexcan1defgrp {
 		fsl,pins =3D <
 			MX6QDL_PAD_GPIO_7__FLEXCAN1_TX 0x1b0b0
 			MX6QDL_PAD_GPIO_8__FLEXCAN1_RX 0x1b0b0
 		>;
 	};
=20
-	pinctrl_flexcan2: flexcan2grp {
+	pinctrl_flexcan1_sleep: flexcan1slpgrp {
+		fsl,pins =3D <
+			MX6QDL_PAD_GPIO_7__GPIO1_IO07 0x0
+			MX6QDL_PAD_GPIO_8__GPIO1_IO08 0x0
+		>;
+	};
+
+	pinctrl_flexcan2_default: flexcan2defgrp {
 		fsl,pins =3D <
 			MX6QDL_PAD_KEY_COL4__FLEXCAN2_TX 0x1b0b0
 			MX6QDL_PAD_KEY_ROW4__FLEXCAN2_RX 0x1b0b0
 		>;
 	};
+	pinctrl_flexcan2_sleep: flexcan2slpgrp {
+		fsl,pins =3D <
+			MX6QDL_PAD_KEY_COL4__GPIO4_IO14 0x0
+			MX6QDL_PAD_KEY_ROW4__GPIO4_IO15 0x0
+		>;
+	};
=20
 	pinctrl_gpio_bl_on: gpioblon {
 		fsl,pins =3D <
--=20
2.22.0