From mboxrd@z Thu Jan 1 00:00:00 1970 From: Philippe Schenker Subject: [PATCH 11/22] ARM: dts: imx6: Add sleep state to can interfaces Date: Tue, 30 Jul 2019 16:46:38 +0200 Message-ID: <20190730144649.19022-12-dev@pschenker.ch> References: <20190730144649.19022-1-dev@pschenker.ch> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190730144649.19022-1-dev@pschenker.ch> Sender: linux-kernel-owner@vger.kernel.org To: marcel.ziswiler@toradex.com, max.krummenacher@toradex.com, stefan@agner.ch, devicetree@vger.kernel.org, Rob Herring , Shawn Guo , Mark Rutland Cc: Philippe Schenker , Fabio Estevam , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Pengutronix Kernel Team , NXP Linux Team , Sascha Hauer List-Id: devicetree@vger.kernel.org From: Philippe Schenker 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 --- 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/imx6qdl-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 @@ }; &can1 { - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_flexcan1>; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&pinctrl_flexcan1_default>; + pinctrl-1 = <&pinctrl_flexcan1_sleep>; status = "disabled"; }; &can2 { - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_flexcan2>; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&pinctrl_flexcan2_default>; + pinctrl-1 = <&pinctrl_flexcan2_sleep>; status = "disabled"; }; @@ -599,19 +601,32 @@ >; }; - pinctrl_flexcan1: flexcan1grp { + pinctrl_flexcan1_default: flexcan1defgrp { fsl,pins = < MX6QDL_PAD_GPIO_7__FLEXCAN1_TX 0x1b0b0 MX6QDL_PAD_GPIO_8__FLEXCAN1_RX 0x1b0b0 >; }; - pinctrl_flexcan2: flexcan2grp { + pinctrl_flexcan1_sleep: flexcan1slpgrp { + fsl,pins = < + MX6QDL_PAD_GPIO_7__GPIO1_IO07 0x0 + MX6QDL_PAD_GPIO_8__GPIO1_IO08 0x0 + >; + }; + + pinctrl_flexcan2_default: flexcan2defgrp { fsl,pins = < MX6QDL_PAD_KEY_COL4__FLEXCAN2_TX 0x1b0b0 MX6QDL_PAD_KEY_ROW4__FLEXCAN2_RX 0x1b0b0 >; }; + pinctrl_flexcan2_sleep: flexcan2slpgrp { + fsl,pins = < + MX6QDL_PAD_KEY_COL4__GPIO4_IO14 0x0 + MX6QDL_PAD_KEY_ROW4__GPIO4_IO15 0x0 + >; + }; pinctrl_gpio_bl_on: gpioblon { fsl,pins = < -- 2.22.0