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=-15.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 9BB3FC433DB for ; Tue, 5 Jan 2021 03:33:23 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 5319E22515 for ; Tue, 5 Jan 2021 03:33:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5319E22515 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=sholland.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=aT0I60sVk0nEUtBwFZzZlrTUZmZpIS7GuIj+oWoba9c=; b=QTywf9wBjhSEHqZMEQ/Jb6jnL TJIbjOsOIoBQDHhfotv3cKC4idL8EFdhqx5jjJPnHugBvjsuHaZe3k95xrVZBoUTk14r60sAGPHHr l35E2xAp2q7god59e6/7PIGwj2gZ3toKL8by24NJHVtlCYJAn7EYTD9XzB6Bx0wLGhMnegUfiudYn w/WJmGtXV4aXtc5LxTrIiDrpcMCVJT0vgZD5qEGVjIyVvPZvegDnjE8Gn6aJFx956ZGsCi+xo8fth j7kJ7hhYt/tZdr9jqk50OAymOtfCnRiIqLTilSUS+KbdnTvKwo7TU+KBEk7/QAnQ9ivHeheyLxDNq uy3+pWL0w==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kwd4Y-00067s-5X; Tue, 05 Jan 2021 03:31:50 +0000 Received: from new3-smtp.messagingengine.com ([66.111.4.229]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kwd4V-000670-If for linux-arm-kernel@lists.infradead.org; Tue, 05 Jan 2021 03:31:48 +0000 Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailnew.nyi.internal (Postfix) with ESMTP id 85093580292; Mon, 4 Jan 2021 22:31:45 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute5.internal (MEProxy); Mon, 04 Jan 2021 22:31:45 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sholland.org; h= subject:to:cc:references:from:message-id:date:mime-version :in-reply-to:content-type:content-transfer-encoding; s=fm1; bh=C itscExJ0arRYiy5q962saA1Ka78ZE8Lz2I4U5LlsgI=; b=AXq4as1R+3K6Dr99p OCfwDtee43uQ3wZYHfqv2PXECzSLQyb/rCCszZ5f3VTbc/JWzIVkvZjYzqlFNhP6 VuiY6XiuFYfZazDHBzIjAsu2A2ecozObVeGaxxmK7mATruLy7Np485K90wF/bJtm sCxvbeRiLI91aXa0jkD95GkzbxhBRIJdYzdGgyj0wYAgyq2z7uCJFmIIOmbAlRhn oQb/p/K9CkYaEwIvZErqb4uid0et+ra46JkR+nd+P39Z6ZHTlJ4CJMe3g/whjmvQ v6S8LshPpGy6adyV0g0SQ6vsLkSCVxTCBkybPjtp4c04anCpEFTCoUUV/di+aKmL rW2eg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm1; bh=CitscExJ0arRYiy5q962saA1Ka78ZE8Lz2I4U5Lls gI=; b=Bi8FDIxDrHaXZzQuXWPMiKnY78DUuDcgY7mD3WP4bdCd8Karme4E+IC3Q xBHCGwFAL/PlVO3O2SomYrHqU/pBjfHV89DIMlyrRGYkqdY3pu7ropp6IubF0XGe J7hgO5185huew6J12ZnTrMT2XZzmTnHCcJVs/8VtciP4IQaSLgXPLCx6nXvN0qRz XgTyX64+HZg/epnaMxxxzq24Aj1yp2eDa7Wb4FExGPyNpQjDf4TqaV8vt8d32fxc pe4RKvl/cfNWatQ5ghcLX6R3txryvkaRB7TTfuG29k6scDhaOkHoVNVTgY3p3VgK lHRT5fZ78I/OAUWUO6ZF4WzSaawsg== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedujedrvdefgedgheelucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepuffvfhfhkffffgggjggtgfesthekredttdefjeenucfhrhhomhepufgrmhhu vghlucfjohhllhgrnhguuceoshgrmhhuvghlsehshhholhhlrghnugdrohhrgheqnecugg ftrfgrthhtvghrnhepgfelkeduveejtdejhfeiledvhfeggeeiieeklefhfeefffffffeg udetteelieejnecukfhppeejtddrudefhedrudegkedrudehudenucevlhhushhtvghruf hiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpehsrghmuhgvlhesshhhohhllhgr nhgurdhorhhg X-ME-Proxy: Received: from [192.168.50.169] (70-135-148-151.lightspeed.stlsmo.sbcglobal.net [70.135.148.151]) by mail.messagingengine.com (Postfix) with ESMTPA id D0471108005F; Mon, 4 Jan 2021 22:31:42 -0500 (EST) Subject: Re: [PATCH v2 4/4] arm64: dts: allwinner: h6: Use RSB for AXP805 PMIC connection To: =?UTF-8?Q?Andr=c3=a9_Przywara?= , Maxime Ripard , Chen-Yu Tsai , Jernej Skrabec , Rob Herring , Michael Turquette , Stephen Boyd , Linus Walleij , Philipp Zabel References: <20210103100007.32867-1-samuel@sholland.org> <20210103100007.32867-5-samuel@sholland.org> From: Samuel Holland Message-ID: Date: Mon, 4 Jan 2021 21:31:42 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210104_223147_666864_987559F9 X-CRM114-Status: GOOD ( 25.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-sunxi@googlegroups.com, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gMS80LzIxIDQ6NTQgQU0sIEFuZHLDqSBQcnp5d2FyYSB3cm90ZToKPiBPbiAwMy8wMS8yMDIx IDEwOjAwLCBTYW11ZWwgSG9sbGFuZCB3cm90ZToKPj4gT24gYm9hcmRzIHdoZXJlIHRoZSBvbmx5 IHBlcmlwaGVyYWwgY29ubmVjdGVkIHRvIFBMMC9QTDEgaXMgYW4gWC1Qb3dlcnMKPj4gUE1JQywg Y29uZmlndXJlIHRoZSBjb25uZWN0aW9uIHRvIHVzZSB0aGUgUlNCIGJ1cyByYXRoZXIgdGhhbiB0 aGUgSTJDCj4+IGJ1cy4gQ29tcGFyZWQgdG8gdGhlIEkyQyBjb250cm9sbGVyIHRoYXQgc2hhcmVz IHRoZSBwaW5zLCB0aGUgUlNCCj4+IGNvbnRyb2xsZXIgYWxsb3dzIGEgaGlnaGVyIGJ1cyBmcmVx dWVuY3ksIGFuZCBpdCBpcyBtb3JlIENQVS1lZmZpY2llbnQuCj4gCj4gQnV0IGlzIGl0IHJlYWxs eSBuZWNlc3NhcnkgdG8gY2hhbmdlIHRoZSBEVHMgZm9yIHRob3NlIGJvYXJkcyBpbiB0aGlzCj4g d2F5PyBJdCBtZWFucyB0aG9zZSBuZXdlciBEVHMgbm93IGJlY29tZSBpbmNvbXBhdGlibGUgd2l0 aCBvbGRlcgo+IGtlcm5lbHMsIGFuZCBJIGRvbid0IGtub3cgaWYgdGhvc2UgcmVhc29ucyBhYm92 ZSByZWFsbHkganVzdGlmeSB0aGlzLgo+IAo+IEkgdW5kZXJzdGFuZCB0aGF0IHdlIG9mZmljaWFs bHkgZG9uJ3QgY2FyZSBhYm91dCAibmV3ZXIgRFRzIG9uIG9sZGVyCj4ga2VybmVscyIsIGJ1dCBk byB3ZSByZWFsbHkgbmVlZCB0byBicmVhayB0aGlzIGRlbGliZXJhdGVseSwgZm9yIG5vCj4gcHJl c3NpbmcgcmVhc29ucz8KClRoYXQncyBhIHJlYXNvbmFibGUgY29uY2Vybi4gSSBhbSBmaW5lIGlm IHlvdSB3YW50IHRvIGRlbGF5IG9yIGRyb3AgcGF0Y2ggNC4KCkNoZWVycywKU2FtdWVsCgo+IENo ZWVycywKPiBBbmRyZQo+IAo+IFAuUy4gSSBhbSBmaW5lIHdpdGggc3VwcG9ydGluZyBSU0Igb24g SDYsIGFuZCBldmVuIHVzaW5nIGl0IG9uIG5ldyBEVHMsCj4ganVzdCB3YW50IHRvIGF2b2lkIGJy ZWFraW5nIGV4aXN0aW5nIG9uZXMuCj4gCj4+IFNpZ25lZC1vZmYtYnk6IFNhbXVlbCBIb2xsYW5k IDxzYW11ZWxAc2hvbGxhbmQub3JnPgo+PiAtLS0KPj4gIC4uLi9kdHMvYWxsd2lubmVyL3N1bjUw aS1oNi1iZWVsaW5rLWdzMS5kdHMgICB8IDM4ICsrKysrKysrKy0tLS0tLS0tLS0KPj4gIC4uLi9k dHMvYWxsd2lubmVyL3N1bjUwaS1oNi1vcmFuZ2VwaS0zLmR0cyAgICB8IDE0ICsrKy0tLS0KPj4g IC4uLi9kdHMvYWxsd2lubmVyL3N1bjUwaS1oNi1vcmFuZ2VwaS5kdHNpICAgICB8IDIyICsrKysr LS0tLS0tCj4+ICAzIGZpbGVzIGNoYW5nZWQsIDM3IGluc2VydGlvbnMoKyksIDM3IGRlbGV0aW9u cygtKQo+Pgo+PiBkaWZmIC0tZ2l0IGEvYXJjaC9hcm02NC9ib290L2R0cy9hbGx3aW5uZXIvc3Vu NTBpLWg2LWJlZWxpbmstZ3MxLmR0cyBiL2FyY2gvYXJtNjQvYm9vdC9kdHMvYWxsd2lubmVyL3N1 bjUwaS1oNi1iZWVsaW5rLWdzMS5kdHMKPj4gaW5kZXggN2M5ZGJkZTY0NWI1Li4zNDUyYWRkMzBj YzQgMTAwNjQ0Cj4+IC0tLSBhL2FyY2gvYXJtNjQvYm9vdC9kdHMvYWxsd2lubmVyL3N1bjUwaS1o Ni1iZWVsaW5rLWdzMS5kdHMKPj4gKysrIGIvYXJjaC9hcm02NC9ib290L2R0cy9hbGx3aW5uZXIv c3VuNTBpLWg2LWJlZWxpbmstZ3MxLmR0cwo+PiBAQCAtMTUwLDEyICsxNTAsMjggQEAgJnBpbyB7 Cj4+ICAJdmNjLXBnLXN1cHBseSA9IDwmcmVnX2FsZG8xPjsKPj4gIH07Cj4+ICAKPj4gLSZyX2ky YyB7Cj4+ICsmcl9pciB7Cj4+ICsJbGludXgscmMtbWFwLW5hbWUgPSAicmMtYmVlbGluay1nczEi Owo+PiArCXN0YXR1cyA9ICJva2F5IjsKPj4gK307Cj4+ICsKPj4gKyZyX3BpbyB7Cj4+ICsJLyoK Pj4gKwkgKiBGSVhNRTogV2UgY2FuJ3QgYWRkIHRoYXQgc3VwcGx5IGZvciBub3cgc2luY2UgaXQg d291bGQKPj4gKwkgKiBjcmVhdGUgYSBjaXJjdWxhciBkZXBlbmRlbmN5IGJldHdlZW4gcGluY3Ry bCwgdGhlIHJlZ3VsYXRvcgo+PiArCSAqIGFuZCB0aGUgUlNCIEJ1cy4KPj4gKwkgKgo+PiArCSAq IHZjYy1wbC1zdXBwbHkgPSA8JnJlZ19hbGRvMT47Cj4+ICsJICovCj4+ICsJdmNjLXBtLXN1cHBs eSA9IDwmcmVnX2FsZG8xPjsKPj4gK307Cj4+ICsKPj4gKyZyX3JzYiB7Cj4+ICAJc3RhdHVzID0g Im9rYXkiOwo+PiAgCj4+IC0JYXhwODA1OiBwbWljQDM2IHsKPj4gKwlheHA4MDU6IHBtaWNANzQ1 IHsKPj4gIAkJY29tcGF0aWJsZSA9ICJ4LXBvd2VycyxheHA4MDUiLCAieC1wb3dlcnMsYXhwODA2 IjsKPj4gLQkJcmVnID0gPDB4MzY+Owo+PiArCQlyZWcgPSA8MHg3NDU+Owo+PiAgCQlpbnRlcnJ1 cHQtcGFyZW50ID0gPCZyX2ludGM+Owo+PiAgCQlpbnRlcnJ1cHRzID0gPDAgSVJRX1RZUEVfTEVW RUxfTE9XPjsKPj4gIAkJaW50ZXJydXB0LWNvbnRyb2xsZXI7Cj4+IEBAIC0yNzMsMjIgKzI4OSw2 IEBAIHN3IHsKPj4gIAl9Owo+PiAgfTsKPj4gIAo+PiAtJnJfaXIgewo+PiAtCWxpbnV4LHJjLW1h cC1uYW1lID0gInJjLWJlZWxpbmstZ3MxIjsKPj4gLQlzdGF0dXMgPSAib2theSI7Cj4+IC19Owo+ PiAtCj4+IC0mcl9waW8gewo+PiAtCS8qCj4+IC0JICogUEwwIGFuZCBQTDEgYXJlIHVzZWQgZm9y IFBNSUMgSTJDCj4+IC0JICogZG9uJ3QgZW5hYmxlIHRoZSBwbC1zdXBwbHkgZWxzZQo+PiAtCSAq IGl0IHdpbGwgZmFpbCBhdCBib290Cj4+IC0JICoKPj4gLQkgKiB2Y2MtcGwtc3VwcGx5ID0gPCZy ZWdfYWxkbzE+Owo+PiAtCSAqLwo+PiAtCXZjYy1wbS1zdXBwbHkgPSA8JnJlZ19hbGRvMT47Cj4+ IC19Owo+PiAtCj4+ICAmcnRjIHsKPj4gIAljbG9ja3MgPSA8JmV4dF9vc2MzMms+Owo+PiAgfTsK Pj4gZGlmZiAtLWdpdCBhL2FyY2gvYXJtNjQvYm9vdC9kdHMvYWxsd2lubmVyL3N1bjUwaS1oNi1v cmFuZ2VwaS0zLmR0cyBiL2FyY2gvYXJtNjQvYm9vdC9kdHMvYWxsd2lubmVyL3N1bjUwaS1oNi1v cmFuZ2VwaS0zLmR0cwo+PiBpbmRleCAxNWM5ZGQ4YzQ0NzkuLjE2NzAyMjkzYWMwYiAxMDA2NDQK Pj4gLS0tIGEvYXJjaC9hcm02NC9ib290L2R0cy9hbGx3aW5uZXIvc3VuNTBpLWg2LW9yYW5nZXBp LTMuZHRzCj4+ICsrKyBiL2FyY2gvYXJtNjQvYm9vdC9kdHMvYWxsd2lubmVyL3N1bjUwaS1oNi1v cmFuZ2VwaS0zLmR0cwo+PiBAQCAtMTc1LDEyICsxNzUsMTYgQEAgJnBpbyB7Cj4+ICAJdmNjLXBn LXN1cHBseSA9IDwmcmVnX3ZjY193aWZpX2lvPjsKPj4gIH07Cj4+ICAKPj4gLSZyX2kyYyB7Cj4+ ICsmcl9pciB7Cj4+ICsJc3RhdHVzID0gIm9rYXkiOwo+PiArfTsKPj4gKwo+PiArJnJfcnNiIHsK Pj4gIAlzdGF0dXMgPSAib2theSI7Cj4+ICAKPj4gLQlheHA4MDU6IHBtaWNAMzYgewo+PiArCWF4 cDgwNTogcG1pY0A3NDUgewo+PiAgCQljb21wYXRpYmxlID0gIngtcG93ZXJzLGF4cDgwNSIsICJ4 LXBvd2VycyxheHA4MDYiOwo+PiAtCQlyZWcgPSA8MHgzNj47Cj4+ICsJCXJlZyA9IDwweDc0NT47 Cj4+ICAJCWludGVycnVwdC1wYXJlbnQgPSA8JnJfaW50Yz47Cj4+ICAJCWludGVycnVwdHMgPSA8 MCBJUlFfVFlQRV9MRVZFTF9MT1c+Owo+PiAgCQlpbnRlcnJ1cHQtY29udHJvbGxlcjsKPj4gQEAg LTI5MSwxMCArMjk1LDYgQEAgc3cgewo+PiAgCX07Cj4+ICB9Owo+PiAgCj4+IC0mcl9pciB7Cj4+ IC0Jc3RhdHVzID0gIm9rYXkiOwo+PiAtfTsKPj4gLQo+PiAgJnJ0YyB7Cj4+ICAJY2xvY2tzID0g PCZleHRfb3NjMzJrPjsKPj4gIH07Cj4+IGRpZmYgLS1naXQgYS9hcmNoL2FybTY0L2Jvb3QvZHRz L2FsbHdpbm5lci9zdW41MGktaDYtb3JhbmdlcGkuZHRzaSBiL2FyY2gvYXJtNjQvYm9vdC9kdHMv YWxsd2lubmVyL3N1bjUwaS1oNi1vcmFuZ2VwaS5kdHNpCj4+IGluZGV4IGViYzEyMGE5MjMyZi4u MjNlM2NiMmZmZDhkIDEwMDY0NAo+PiAtLS0gYS9hcmNoL2FybTY0L2Jvb3QvZHRzL2FsbHdpbm5l ci9zdW41MGktaDYtb3JhbmdlcGkuZHRzaQo+PiArKysgYi9hcmNoL2FybTY0L2Jvb3QvZHRzL2Fs bHdpbm5lci9zdW41MGktaDYtb3JhbmdlcGkuZHRzaQo+PiBAQCAtMTEyLDEyICsxMTIsMjAgQEAg JnBpbyB7Cj4+ICAJdmNjLXBnLXN1cHBseSA9IDwmcmVnX2FsZG8xPjsKPj4gIH07Cj4+ICAKPj4g LSZyX2kyYyB7Cj4+ICsmcl9pciB7Cj4+ICsJc3RhdHVzID0gIm9rYXkiOwo+PiArfTsKPj4gKwo+ PiArJnJfcGlvIHsKPj4gKwl2Y2MtcG0tc3VwcGx5ID0gPCZyZWdfYmxkbzM+Owo+PiArfTsKPj4g Kwo+PiArJnJfcnNiIHsKPj4gIAlzdGF0dXMgPSAib2theSI7Cj4+ICAKPj4gLQlheHA4MDU6IHBt aWNAMzYgewo+PiArCWF4cDgwNTogcG1pY0A3NDUgewo+PiAgCQljb21wYXRpYmxlID0gIngtcG93 ZXJzLGF4cDgwNSIsICJ4LXBvd2VycyxheHA4MDYiOwo+PiAtCQlyZWcgPSA8MHgzNj47Cj4+ICsJ CXJlZyA9IDwweDc0NT47Cj4+ICAJCWludGVycnVwdC1wYXJlbnQgPSA8JnJfaW50Yz47Cj4+ICAJ CWludGVycnVwdHMgPSA8MCBJUlFfVFlQRV9MRVZFTF9MT1c+Owo+PiAgCQlpbnRlcnJ1cHQtY29u dHJvbGxlcjsKPj4gQEAgLTIzMiwxNCArMjQwLDYgQEAgc3cgewo+PiAgCX07Cj4+ICB9Owo+PiAg Cj4+IC0mcl9pciB7Cj4+IC0Jc3RhdHVzID0gIm9rYXkiOwo+PiAtfTsKPj4gLQo+PiAtJnJfcGlv IHsKPj4gLQl2Y2MtcG0tc3VwcGx5ID0gPCZyZWdfYmxkbzM+Owo+PiAtfTsKPj4gLQo+PiAgJnJ0 YyB7Cj4+ICAJY2xvY2tzID0gPCZleHRfb3NjMzJrPjsKPj4gIH07Cj4+Cj4gCgoKX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBt YWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9s aXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=