From patchwork Tue Jul 27 16:11:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tim Harvey X-Patchwork-Id: 486909 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=-16.7 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, USER_AGENT_GIT autolearn=ham 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 83B44C4338F for ; Tue, 27 Jul 2021 16:11:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6E56561B5F for ; Tue, 27 Jul 2021 16:11:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229658AbhG0QLP (ORCPT ); Tue, 27 Jul 2021 12:11:15 -0400 Received: from finn.gateworks.com ([108.161.129.64]:58992 "EHLO finn.localdomain" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229494AbhG0QLP (ORCPT ); Tue, 27 Jul 2021 12:11:15 -0400 Received: from 068-189-091-139.biz.spectrum.com ([68.189.91.139] helo=tharvey.pdc.gateworks.com) by finn.localdomain with esmtp (Exim 4.93) (envelope-from ) id 1m8Pfe-005DjI-I3; Tue, 27 Jul 2021 16:11:06 +0000 From: Tim Harvey To: Rob Herring , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Tim Harvey Subject: [PATCH 4/5] arm64: dts: imx8mm-venice-gw7901: add support for USB hub subload Date: Tue, 27 Jul 2021 09:11:00 -0700 Message-Id: <20210727161101.32267-4-tharvey@gateworks.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210727161101.32267-1-tharvey@gateworks.com> References: <20210727161101.32267-1-tharvey@gateworks.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The USB hub has it's reset as GPIO4_IO17 but can be sub-loaded and VBUS provided by a VBUS regulator with GPIO4_IO2 as the enable and GPIO1_IO15 as the active-low over-current. Enable pull-up for GPIO4_IO17 to keep hub out of reset and move VBUS enable to GPIO4_IO2. Additionally enable pull-up on GPIO1_IO15 so that if the hub is loaded it never over-currents. This allows USB to work in both configurations without a device-tree change. Signed-off-by: Tim Harvey --- arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts index 5a1e9df39bec..db43ee28bdb6 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts +++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts @@ -216,7 +216,7 @@ pinctrl-0 = <&pinctrl_reg_usb2>; compatible = "regulator-fixed"; regulator-name = "usb_usb2_vbus"; - gpio = <&gpio4 17 GPIO_ACTIVE_HIGH>; + gpio = <&gpio4 2 GPIO_ACTIVE_HIGH>; enable-active-high; regulator-min-microvolt = <5000000>; regulator-max-microvolt = <5000000>; @@ -824,8 +824,9 @@ pinctrl_reg_usb2: regusb1grp { fsl,pins = < - MX8MM_IOMUXC_SAI1_TXD5_GPIO4_IO17 0x41 - MX8MM_IOMUXC_GPIO1_IO15_USB2_OTG_OC 0x41 + MX8MM_IOMUXC_SAI1_RXD0_GPIO4_IO2 0x41 + MX8MM_IOMUXC_SAI1_TXD5_GPIO4_IO17 0x140 + MX8MM_IOMUXC_GPIO1_IO15_USB2_OTG_OC 0x140 >; };