From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3668840-1524603415-2-2378456579602691425 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, MAILING_LIST_MULTI -1, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='utf-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: linux-usb-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=fm2; t= 1524603415; b=S+oD+FzRCJrinLXjdYc5ti3aldJB01NpGrQZWtNqHJm8OfPOvx /onXq0rA8yZ/vwdBqUs0oXstislBbaU2GBLYTrhL48p416bAxi1nIorkpUgqkZF5 pct1ZUPDodHDOvKhfKDD6geUrMtxSDyNqmOwqjaPHV2v2uq2PzRxhX87oTsXy0Fu 8veGf0ZKMJ3kNtvOhDeAS6c5faFOpOor/Fy4A+HCl8pc1mOGW1wmUcn0eQmOp2re wD+lrPZ213dVvLeOdbvxBGCkUguBWCL8oNP+YSVGw6v62VoiXAR4QVk8WeTUnvOa sdrHJeMDdp1Bg4qGWaW23/gfuZqSrM0gGDgw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=date:from:to:cc:subject:message-id :references:mime-version:content-type:in-reply-to:sender :list-id; s=fm2; t=1524603415; bh=hk6tFAAYj+1mdKGJsriOxl3Svzr8dE lmwYix1f2vxxQ=; b=LsQouJpJ/j4L133xy2Gbzz/Cz3E8UBwEQ5JVLnIxruABsg Xq2/+zjhUf3O5Jxgno5GJRyh+y9vCJAtAY/v45PQFvhtyDlWnKCrev+lPImY09py nXXR6Kk+zNOMl2qCRgbYCuyR2VRNTTqLmFDutVeb5silV5CnzwFTv4iKVESUfb8H o8rSzd6sVruXVQafNCu6nJk9BocaUAKtUizID+zoJpfw2z2wgR6U6wmIAxRAnnCf 9SCb/BA8g+Tpir4mSrB8tXT5UBdSDHvLj+GQSi/IyBdB34hFe4jVzXdmgcg2VAu5 XjLiwUgVc9X1/YP5149ZiqtbmXcWX48yklszga/w== ARC-Authentication-Results: i=1; mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=kernel.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-usb-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=orgdomain_pass (Domain org match); x-cm=none score=0; x-google-dkim=fail (body has been altered, 2048-bit rsa key) header.d=1e100.net header.i=@1e100.net header.b=BAdYFiPC; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=kernel.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=kernel.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-usb-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=orgdomain_pass (Domain org match); x-cm=none score=0; x-google-dkim=fail (body has been altered, 2048-bit rsa key) header.d=1e100.net header.i=@1e100.net header.b=BAdYFiPC; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=kernel.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfDWDhw5h5TiWYPczNuioVyWL36Kl5gW2/68NUXgbR7/X4Fa8vKFS/4/p//RMie6KuA/METzLPILQejD2MM0uiLSuH7paWfVwNAmFAnpI9PbpSZbuFxg9 PYSc8WeXDUvZsIf9sv8xcV9ynh8R8ztJbtU7wR3gfoKQlmh/HEgEy5LHhOG1jpJbXdUVDCVDpcgWvyjqG7rA9VatQ9ywCk5BbEr9lIjnFnb+QvJ+QtibSR6Q X-CM-Analysis: v=2.3 cv=WaUilXpX c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=IkcTkHD0fZMA:10 a=Kd1tUaAdevIA:10 a=VwQbUJbxAAAA:8 a=KwgaByte5vuy8mZOQR4A:9 a=QEXdDO2ut3YA:10 a=x8gzFH9gYPwA:10 a=AjGcO6oz07-iQ99wixmX:22 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751418AbeDXU4t (ORCPT ); Tue, 24 Apr 2018 16:56:49 -0400 Received: from mail-wm0-f67.google.com ([74.125.82.67]:36221 "EHLO mail-wm0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751251AbeDXU4l (ORCPT ); Tue, 24 Apr 2018 16:56:41 -0400 X-Google-Smtp-Source: AIpwx4/AR3uuD2lZAMXafigzGWpMCxutRJPKQn3aoTTajaZrLdbamTa//lJ8ZaTPhiUGS0era/BUQQ== Date: Tue, 24 Apr 2018 22:56:36 +0200 From: Krzysztof Kozlowski To: Arnd Bergmann Cc: Kukjin Kim , Rob Herring , Mark Rutland , Tejun Heo , Sylwester Nawrocki , Tomasz Figa , Chanwoo Choi , Michael Turquette , Stephen Boyd , "Rafael J. Wysocki" , Viresh Kumar , Zhang Rui , Eduardo Valentin , Russell King , Hans de Goede , Linus Walleij , Andi Shyti , Mark Brown , Bartlomiej Zolnierkiewicz , Alan Stern , Greg Kroah-Hartman , Linux ARM , "moderated list:ARM/SAMSUNG EXYNOS ARM ARCHITECTURES" , DTML , Linux Kernel Mailing List , IDE-ML , linux-clk , Linux PM list , linux-i2c@vger.kernel.org, linux-gpio@vger.kernel.org, linux-spi , linux-usb@vger.kernel.org, Marek Szyprowski , Olof Johansson , Jaehoon Chung Subject: Re: [RFC 00/10] ARM: Remove support for Exynos5440 Message-ID: <20180424205636.cdp4czq6hhs5gu5a@kozik-lap> References: <20180424203239.21885-1-krzk@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20170609 (1.8.3) Sender: linux-usb-owner@vger.kernel.org X-Mailing-List: linux-usb@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Tue, Apr 24, 2018 at 10:50:58PM +0200, Arnd Bergmann wrote: > On Tue, Apr 24, 2018 at 10:32 PM, Krzysztof Kozlowski wrote: > > Hi, > > > > > > Overview > > ======== > > Let's continue the removal of old platforms. We already get rid of Exynos4212. > > Now it's time for Exynos5440. > > > > The Exynos5440 (quad-core A15 with GMAC, PCIe, SATA) was targeting > > server platforms but it did not make it to the market really. There are > > no development boards with it and probably there are no real products > > neither. The development for Exynos5440 ended in 2013 and since then > > the platform is in maintenance mode. > > > > The only development happening around it is the PCIe driver for Exynos5433 > > (ARMv8). [1] > > > > Removing Exynos5440, makes our life slightly easier: > > 1. Less maintenance, > > 2. Smaller code, less quirks, > > 3. No need to preserve (imaginary) backward-compatibility for Exynos PCIe > > driver (so it is easier to add support for Exynos5433). > > > > > > Because of point (3) above - I left the PCIe and PCIe PHY drivers intact. > > > > > > Dependencies > > ============ > > I think about starting with removal of DTS in some kernel release (patch 1/10). > > Then all drivers can be removed/updated - subsystem maintainers can pick their > > patches freely. > > > > Finally, after getting rid of all Exynos5440 symbols, the last patch (10/10) will > > end in arm-soc tree. > > > > > > Any comments? > > I don't see any hard dependency here, if this is all unused, I think we > can apply both patches 1 and 10 into arm-soc at the same time as merging > the other patches through the respective subsystem trees. The only dependency is through Kconfig symbol (SOC_EXYNOS5440). After applying 10/10, which removes SOC_EXYNOS5440, some automatic code testers can complain about non-existing Kconfig option. That's not big issue because all this will go away so indeed we could take everything in one release. Best regards, rzysztof