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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 541B4C3A5A1 for ; Wed, 28 Aug 2019 13:46:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 31A9020828 for ; Wed, 28 Aug 2019 13:46:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726828AbfH1Nqz (ORCPT ); Wed, 28 Aug 2019 09:46:55 -0400 Received: from outbound.smtp.vt.edu ([198.82.183.121]:47860 "EHLO omr1.cc.vt.edu" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726440AbfH1Nqy (ORCPT ); Wed, 28 Aug 2019 09:46:54 -0400 Received: from mr4.cc.vt.edu (mail.ipv6.vt.edu [IPv6:2607:b400:92:9:0:9d:8fcb:4116]) by omr1.cc.vt.edu (8.14.4/8.14.4) with ESMTP id x7SDkrh5030898 for ; Wed, 28 Aug 2019 09:46:53 -0400 Received: from mail-qk1-f197.google.com (mail-qk1-f197.google.com [209.85.222.197]) by mr4.cc.vt.edu (8.14.7/8.14.7) with ESMTP id x7SDkm8a014158 for ; Wed, 28 Aug 2019 09:46:53 -0400 Received: by mail-qk1-f197.google.com with SMTP id l14so2527586qke.16 for ; Wed, 28 Aug 2019 06:46:53 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:in-reply-to:references :mime-version:content-transfer-encoding:date:message-id; bh=6dlfkMiIJoG2i19B9uaZmEjU8eFDQ1sIWjxdg+T91HE=; b=Qz1bXNcNCskUAOUp9z1mm9J5CASnaybxWF2p9V1P96hD1q7zbnIBCcV4DLbZ3ZNQB1 ty2A7GHdDMjBLSzTzTmMNue73SbFZEi//8ue1dQMluqFAZ40aXBOXV/9xoSZSZw121wQ 1d7bVclwqWAdGJAzg3uSpT8Sd+YMndnwLpDtJUpfV61jV9pwzIl1YK55roRtwLwGyMgW xQZ8K1ypr9IEPpaMz1IUygA5zHxXF0h3eSPgo+PElnfe6snNQX7xMncOpn0jau0O5Nwr 6CehbeHdL3pLD8uYGPQwr6HCya4dlHKgj3/eDz7iMwAAWkOAFVfoiFo/+UadL1pDj1Fb 1Vtg== X-Gm-Message-State: APjAAAUlFyttymkXnK/ks884JRJ+vViGawT31cjrEBUauPXQvuHZ466I 5RO0S9DxX55h1UzmR2SNRDn8mzmSArTmFUs8x7mZyn3bscny7ksl9xOdrYZ3L9PbQ7YqL0jHxwQ L/HKGbQE3W94LlLkog6v2YhZtwMgVuGH3bx4= X-Received: by 2002:ac8:7543:: with SMTP id b3mr4241829qtr.13.1567000008084; Wed, 28 Aug 2019 06:46:48 -0700 (PDT) X-Google-Smtp-Source: APXvYqxQaF6n9TNJ7UANQVE9yf8af37GlOyOcqa4tTFHjolQSwZt4CkCi4+VJt/bQM0T+/UKVBdLGA== X-Received: by 2002:ac8:7543:: with SMTP id b3mr4241800qtr.13.1567000007811; Wed, 28 Aug 2019 06:46:47 -0700 (PDT) Received: from turing-police ([2601:5c0:c001:4341::359]) by smtp.gmail.com with ESMTPSA id g24sm1327307qtc.38.2019.08.28.06.46.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Aug 2019 06:46:46 -0700 (PDT) From: "Valdis Kl=?utf-8?Q?=c4=93?=tnieks" X-Google-Original-From: "Valdis Kl=?utf-8?Q?=c4=93?=tnieks" X-Mailer: exmh version 2.9.0 11/07/2018 with nmh-1.7+dev To: Dinh Nguyen Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, robh@kernel.org, linux@armlinux.org.uk, frowand.list@gmail.com, keescook@chromium.org, anton@enomsg.org, ccross@android.com, tony.luck@intel.com, daniel.thompson@linaro.org, linus.walleij@linaro.org, manivannan.sadhasivam@linaro.org, linux-arm-kernel@lists.infradead.org, p.zabel@pengutronix.de Subject: Re: [PATCHv5] drivers/amba: add reset control to amba bus probe In-Reply-To: <46bcf493-9dd6-bf5b-089a-be158739a13f@kernel.org> References: <20190826154252.22952-1-dinguyen@kernel.org> <30608.1566933924@turing-police> <46bcf493-9dd6-bf5b-089a-be158739a13f@kernel.org> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1567000004_1612P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Wed, 28 Aug 2019 09:46:45 -0400 Message-ID: <292438.1567000005@turing-police> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --==_Exmh_1567000004_1612P Content-Type: text/plain; charset=us-ascii On Wed, 28 Aug 2019 08:34:20 -0500, Dinh Nguyen said: > > Does this DTRT for both old and new U-Boots? My naive reading of > > this patch > > What is a DTRT? Do The Right Thing, sorry... > > says on an old U-Boot, we end up attempting to bring it out of > > reset even though they had already been brought out. > > > > If the peripheral is already out of reset, de-asserting the reset has > no affect. OK, thanks. There's been hardware where doing that sort of thing twice will confuse the device and cause issues. --==_Exmh_1567000004_1612P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Comment: Exmh version 2.9.0 11/07/2018 iQIVAwUBXWaFxAdmEQWDXROgAQJZPhAAopKhP6wn5B9evWUpllhb6CIajYqxhob3 zLAF1vVdOpPXyTT3PaFMjwrqKiPt9QnMLHW5odZ5UswcH4dBRByhwb8Hr8a/Ibo9 Nb6BdK1KuilWx3bCvw63nNH9aB+tPvcaOUtux73gD+HaPa/XCvzZvObCnFCXa4oa 9gQJl8GG8pRLfH03QPSYGKAzyJ35qt2RBarVa0Z19NZPB5LDDePLKwxblatRFICW mhdH1t6uC7CuxMqfHKbG5MyhdmgmmOyHg16tHxZ85B8f0CoCFAHx9sNzvS3dmXZd bP2+r7cQ4kNkIWI/PNPzh+s8D9ZlWYdGn1p2VQU/4FKMh2d7IDS5MvLgA5rf0DiE bOPBbqzfZ/DsfyW96M9e4/53OYYK5gqC+ZaePJKY4BkAHLNtKewczCw6E+kck7OW 4ya+eOEFQzl9wC5XNMrYkdV8DLhftU4qEzAHuNH2vHIK7BK+3ARGB4tSQyTMNi/x yOPY69cLv4llawfjD/y0PSqmvKN1MlIjmxeAD9kh6AoTUNNNRgj0F+T/Ma91uBeV 50x+YgZZ104bD6d3s5U0kIgykQJARE0JivC9fkFuKZXE6vtIAssE3FFLw2NKncXw Sq+YA6DuuSvCdhAWEmYJpbpwREHEGAjLsN+JBxPhV7vbbGhVV1UuYXPDVfp18Moy fW9l0ZeoE+c= =tC0P -----END PGP SIGNATURE----- --==_Exmh_1567000004_1612P--