From mboxrd@z Thu Jan 1 00:00:00 1970 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=-4.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 F0BC5C4338F for ; Wed, 11 Aug 2021 09:35:13 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AE94760F21 for ; Wed, 11 Aug 2021 09:35:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org AE94760F21 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:Subject:Message-ID:Date:From: In-Reply-To:References:MIME-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=vnmWklPLRTEwDIs6v08jYlgbZEwb66UUpb8zyL0Ru5g=; b=CAdeWLXAqWDWOz X3kiNfUHNGUi/sS2ezHzh58DMljYkesDVsIOC5zTUKUeJ9xpvLHDW2bzvd00bZ33OPyplMG0R94Aw AbdUKVvEwbQM400yW9m4658zYkEm0plNSLoJfG71kAPhnhLlh5FR4oQZalOwnIDLeSLqRv3GHOuV5 Ic9OEgZwPfruB6Ri8Bcb+YABo3bPEs9Fe9VtQdcf8Tn7eFC1pwqng5ekfSrkgO6XmM7EjYJYffvr+ q6g4wvGrwm+7H7H/TGZaPzzm6FNyY30AF1evhwO2K1I8D/HVnXWfJJh8UxovOjn07OCzLjFngA6A4 /L9S+eRXvfD65PGmgzdw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mDkbS-006K2A-Tk; Wed, 11 Aug 2021 09:32:51 +0000 Received: from mail-lf1-x133.google.com ([2a00:1450:4864:20::133]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mDkDp-006CPB-Io for linux-arm-kernel@lists.infradead.org; Wed, 11 Aug 2021 09:08:29 +0000 Received: by mail-lf1-x133.google.com with SMTP id g30so4249790lfv.4 for ; Wed, 11 Aug 2021 02:08:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=FJkND3GF+U8J9ZGbuL84Kg0IpRjRobLk4jfayoWa3po=; b=Ny531jMm133bQQ5iOMr8t0tiu/b1WicYrv0O6CTt9jK+29t9OQTQFTrKdZKD93QB/U CB5PPZ8C4xuR2veG24GMi9bNpq9xJUszuvI+uoauep2CWxCK8LBdRi8Wtgdt1Y7AOGcI lv2fzvAW4beZa/xhwEc5A7DIvxugEe9DCTWaXmKYCudxzGsq3ZDhWOuRrvv+2kQ6NurY yLWW9b6hyVJpaQpTMBxZ8lolTqiKFb2gOuqzbYalprhAuTQc4AM0BCex69fLsEuV1B39 hWm2zI5FlqNJ0OgosoRpEzSTFZxKOXsdJyUrliN53YXWSSJks+cjXOvhHBO6rWci4CUc muMA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=FJkND3GF+U8J9ZGbuL84Kg0IpRjRobLk4jfayoWa3po=; b=BAhqEttSNdS4Qs4yyV6MJaIKSvczogu16y5xR83yrPUDIlkmPIweDKaABXQLgCw3DR G8j6qXhaYzvlYQQ4uQQhLV+m0SqC107uMbdO8JREKzmVImVOVSzB0xZhM6iHJHKhGvuC WUl4I+xVZcidqDnloulUs8v0MtvHqZSXfLohoxg+tgJevDzgp1/rpN3sUXKa0P6vvds8 DmkZmXqIVj1qmrA8NgInJ99+Hazx9w8hEq1Thju0M/RHiTgrDig+WqG3pgSTqe0IR9A3 g3RcmYgLnEyO6tdnIwW45XcVeQsUtpWyIguOvjpRGgmPTS41p25JOVAtpypfZffnTi2L zGGw== X-Gm-Message-State: AOAM533GoN9Pplx0JJ3vLTe+g5ROQtHHYPr9iE6Tsej2GI+GErnl1Cva b0tPDRTCOgrQQicDnpxpC3itxZkugCLogvHXoZrI/A== X-Google-Smtp-Source: ABdhPJybjRVlicBihDp5oy9rrMpLLrwMSj+dxKRFu8ZHyPPaa/0W4Mt8UE/UXKVGjCnGjYjyIzNgtHUOmvinOUiCPI0= X-Received: by 2002:ac2:4d0f:: with SMTP id r15mr24344711lfi.649.1628672903703; Wed, 11 Aug 2021 02:08:23 -0700 (PDT) MIME-Version: 1.0 References: <20210728234520.2799053-1-linus.walleij@linaro.org> In-Reply-To: From: Linus Walleij Date: Wed, 11 Aug 2021 11:08:12 +0200 Message-ID: Subject: Re: [PATCH] RFC: ARM: dts: Proposed Goramo MultiLink device tree To: Geert Uytterhoeven Cc: Linux ARM , Imre Kaloz , Krzysztof Halasa , OpenWrt Development List X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210811_020825_678325_DEAF1B02 X-CRM114-Status: GOOD ( 11.11 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Jul 29, 2021 at 2:16 PM Geert Uytterhoeven wrote: > Hi Linus, (...) > Can't the existing drivers/gpio/gpio-74x164.c be used? > See also Documentation/devicetree/bindings/gpio/fairchild,74hc595.yaml Sadly no. The way this device is used for GPIO is very different. The former used a version of SPI and this has to hammer GPIO lines directly, and has to use a special strobe signal to propagate values out to pins. Yours, Linus Walleij _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel