From patchwork Mon Sep 13 13:57:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kepplinger X-Patchwork-Id: 511191 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 118C2C433EF for ; Mon, 13 Sep 2021 14:02:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E99EB60FA0 for ; Mon, 13 Sep 2021 14:02:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245333AbhIMODR (ORCPT ); Mon, 13 Sep 2021 10:03:17 -0400 Received: from comms.puri.sm ([159.203.221.185]:39980 "EHLO comms.puri.sm" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343735AbhIMOBQ (ORCPT ); Mon, 13 Sep 2021 10:01:16 -0400 Received: from localhost (localhost [127.0.0.1]) by comms.puri.sm (Postfix) with ESMTP id E0720E129E; Mon, 13 Sep 2021 06:57:39 -0700 (PDT) Received: from comms.puri.sm ([127.0.0.1]) by localhost (comms.puri.sm [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id looLM0Jr5CNu; Mon, 13 Sep 2021 06:57:39 -0700 (PDT) From: Martin Kepplinger To: robh@kernel.org, shawnguo@kernel.org, kernel@pengutronix.de, festevam@gmail.com Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, phone-devel@vger.kernel.org, kernel@puri.sm, Angus Ainslie , Martin Kepplinger Subject: [PATCH v1 5/6] arm64: dts: imx8mq-librem5: add power sequencing for M.2 cards Date: Mon, 13 Sep 2021 15:57:05 +0200 Message-Id: <20210913135706.309685-6-martin.kepplinger@puri.sm> In-Reply-To: <20210913135706.309685-1-martin.kepplinger@puri.sm> References: <20210913135706.309685-1-martin.kepplinger@puri.sm> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Angus Ainslie Some wifi cards need reset asserted until after the power supplies have been enabled. So wire up the W_DISABLE signal for the SDIO port (WIFI_REG_ON net) and the BT_REG_ON net to use it for power sequencing. Signed-off-by: Angus Ainslie Signed-off-by: Martin Kepplinger --- .../boot/dts/freescale/imx8mq-librem5.dtsi | 23 +++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi index e5fdb50557f2..65c86fbbd6d1 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi @@ -199,6 +199,14 @@ simple-audio-card,codec { }; }; + usdhc2_pwrseq: pwrseq { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_bt>, <&pinctrl_wifi_disable>; + compatible = "mmc-pwrseq-simple"; + reset-gpios = <&gpio3 25 GPIO_ACTIVE_HIGH>, + <&gpio4 29 GPIO_ACTIVE_HIGH>; + }; + bm818_codec: sound-wwan-codec { compatible = "broadmobi,bm818", "option,gtm601"; #sound-dai-cells = <0>; @@ -313,6 +321,13 @@ MX8MQ_IOMUXC_NAND_DQS_GPIO3_IO14 0x83 >; }; + pinctrl_bt: btgrp { + fsl,pins = < + /* BT_REG_ON */ + MX8MQ_IOMUXC_SAI5_MCLK_GPIO3_IO25 0x83 + >; + }; + pinctrl_charger_in: chargeringrp { fsl,pins = < /* CHRG_INT */ @@ -644,6 +659,13 @@ MX8MQ_IOMUXC_SD2_RESET_B_USDHC2_RESET_B 0xc1 >; }; + pinctrl_wifi_disable: wifidisablegrp { + fsl,pins = < + /* WIFI_REG_ON */ + MX8MQ_IOMUXC_SAI3_RXC_GPIO4_IO29 0x83 + >; + }; + pinctrl_wifi_pwr: wifipwrgrp { fsl,pins = < /* WIFI3V3_EN */ @@ -1213,6 +1235,7 @@ &usdhc2 { pinctrl-2 = <&pinctrl_usdhc2_200mhz>; bus-width = <4>; vmmc-supply = <®_wifi_3v3>; + mmc-pwrseq = <&usdhc2_pwrseq>; post-power-on-delay-ms = <1000>; cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>; disable-wp;