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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0C9A1C433EF for ; Thu, 30 Sep 2021 12:15:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E47E4619E5 for ; Thu, 30 Sep 2021 12:15:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350735AbhI3MQu (ORCPT ); Thu, 30 Sep 2021 08:16:50 -0400 Received: from smtp-relay-internal-0.canonical.com ([185.125.188.122]:42742 "EHLO smtp-relay-internal-0.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349259AbhI3MQt (ORCPT ); Thu, 30 Sep 2021 08:16:49 -0400 Received: from mail-lf1-f70.google.com (mail-lf1-f70.google.com [209.85.167.70]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-internal-0.canonical.com (Postfix) with ESMTPS id 7D12F40603 for ; Thu, 30 Sep 2021 12:15:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1633004106; bh=sHtMVee23aJJuvqmywuH7ESFy0k6t0bV8U/1nrqOJLI=; h=Subject:To:Cc:References:From:Message-ID:Date:MIME-Version: In-Reply-To:Content-Type; b=FWai4uKiuGxJC4cb1J6/ajTQqZcPLqVwwVCRavKljZtgJ11ostDezYX94sOvYjjVe 4dFU+vWo6dpzzOmAmcIL4fBg548243WELrXKfuxpGRcW0i+2Hz9oeoM9g/pbv95VUg c6fV2jyWsibzj77z6e833xZAeeGc5Yx4f6YCsKW/HfTpYqDwBJZJLunMkqNiCYMUSn 3n8ei0FkUj2W/+SoFc5dRp2/q3kjM+ZoGwwxd+LlGgz0LwTkWIE0ust28kcSKfQJqA KaBZ5PSuorb6JHZxRjXWn1D+tT+grK2zoe2i/8g1Ca45v7T8ALEaLt2EwIKP7SJk/p u2VdqGJzFRsLw== Received: by mail-lf1-f70.google.com with SMTP id x33-20020a0565123fa100b003fcfd99073dso5457142lfa.6 for ; Thu, 30 Sep 2021 05:15:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=sHtMVee23aJJuvqmywuH7ESFy0k6t0bV8U/1nrqOJLI=; b=2P9uGhIfdo/eXqJGV31Zo53JTbYbTHRLJQUlee+FEs5G8FGEdvG06qp8WwMYJeeXgh 1BeI5BjwmAPVah9bmZmWDerCb0S8xL7V7vR1l/E7dXyjNA9TSVp9vIZMb1/W5IgSmnFx zuYl0gBu8JZtix6xzDdVk7PVLCjQzHPKSmGiNrrX/IMFVN3oWGviJs9B0lOWvIJlqH4e RYSRfWn79yX69qq5tWpWIUwPeUa+LtWFF8TumiQ1jm9Ow+Ay8zbFJ3HJ35vc27XB6qkH Etf54qHvghdyb9hO6tqj3osb24ZBGDbUd9ugliK+w8dbNiLW9bqyF3GefLB95faivZTY Z6Zw== X-Gm-Message-State: AOAM533CDheD9IWpO+7xATiwBy12uiIhQlNK+gYIfhvZKJ15gIMP6p3j atO3LTEsz1Y8VMHwsc+hewY2e6z+92qnXJ+vEHf/dO9jXWzw0XST3/oY0EvGnwYD/IHOpEzt1Up F0H96yGV9U+vtYH6tIynaMD2JrsE28SK+Bal2hPQ= X-Received: by 2002:a2e:5450:: with SMTP id y16mr5761526ljd.21.1633004105803; Thu, 30 Sep 2021 05:15:05 -0700 (PDT) X-Google-Smtp-Source: ABdhPJw+cux4wyOirwFRf+O2xj4igckX9azoZlF3oZnFaYbiBaTtiQzVamjgULYK4cmnunDnkNNRxg== X-Received: by 2002:a2e:5450:: with SMTP id y16mr5761488ljd.21.1633004105601; Thu, 30 Sep 2021 05:15:05 -0700 (PDT) Received: from [192.168.0.197] ([193.178.187.25]) by smtp.gmail.com with ESMTPSA id t11sm350942lfr.281.2021.09.30.05.15.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 30 Sep 2021 05:15:04 -0700 (PDT) Subject: Re: [PATCH v2 00/12] arm64: Kconfig: Update ARCH_EXYNOS select configs To: Tomasz Figa , Lee Jones Cc: Will McVicker , Russell King , Catalin Marinas , Will Deacon , Michael Turquette , Stephen Boyd , Sylwester Nawrocki , Chanwoo Choi , Linus Walleij , Alessandro Zummo , Alexandre Belloni , John Stultz , Thomas Gleixner , Geert Uytterhoeven , Saravana Kannan , "Cc: Android Kernel" , Linux ARM , Linux Kernel Mailing List , linux-samsung-soc , linux-clk , "open list:GPIO SUBSYSTEM" , linux-rtc@vger.kernel.org, Arnd Bergmann , Olof Johansson References: <20210928235635.1348330-1-willmcvicker@google.com> <7766faf8-2dd1-6525-3b9a-8ba790c29cff@canonical.com> From: Krzysztof Kozlowski Message-ID: <8729f109-93c1-24dc-f7d9-9c83d7ac24dc@canonical.com> Date: Thu, 30 Sep 2021 14:15:03 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org On 30/09/2021 14:10, Tomasz Figa wrote: > 2021年9月30日(木) 20:51 Lee Jones : >> >> On Thu, 30 Sep 2021, Tomasz Figa wrote: >> >> >> Is that the same as exporting symbols to framework APIs? >> >> Since this is already a method GKI uses to allow external modules to >> interact with the core kernel/frameworks. However, it's not possible >> to upstream these without an upstream user for each one. > > Not necessary the core frameworks, could also be changing the ways the > existing drivers register to allow additional drivers to extend the > functionality rather than completely overwrite them. Yes, the first user could be within the kernel after modifying some of the drivers. > It's really hard > to tell what the right way would be without knowing the exact things > they find missing in the upstream drivers. As for upstream users, this > is exactly the point - upstream is a bidirectional effort, one takes > from it and should contribute things back. > > Generally, the subsystems being mentioned here are so basic (clock, > pinctrl, rtc), that I really can't imagine what kind of rocket science > one might want to hide for competitive reasons... If it's for an > entire SoC, I wonder why Intel and AMD don't have similar concerns and > contribute support for their newest hardware far before the release. Lee used the argument of not-disclosing-edge-hw but I also don't see much of it in the case of few drivers needed to be overridden. Just bunch of registers for the same stuff we have sine 8 years. Rather the vendor does not want to commit effort towards upstreaming these... 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Thu, 30 Sep 2021 05:15:04 -0700 (PDT) Subject: Re: [PATCH v2 00/12] arm64: Kconfig: Update ARCH_EXYNOS select configs To: Tomasz Figa , Lee Jones Cc: Will McVicker , Russell King , Catalin Marinas , Will Deacon , Michael Turquette , Stephen Boyd , Sylwester Nawrocki , Chanwoo Choi , Linus Walleij , Alessandro Zummo , Alexandre Belloni , John Stultz , Thomas Gleixner , Geert Uytterhoeven , Saravana Kannan , "Cc: Android Kernel" , Linux ARM , Linux Kernel Mailing List , linux-samsung-soc , linux-clk , "open list:GPIO SUBSYSTEM" , linux-rtc@vger.kernel.org, Arnd Bergmann , Olof Johansson References: <20210928235635.1348330-1-willmcvicker@google.com> <7766faf8-2dd1-6525-3b9a-8ba790c29cff@canonical.com> From: Krzysztof Kozlowski Message-ID: <8729f109-93c1-24dc-f7d9-9c83d7ac24dc@canonical.com> Date: Thu, 30 Sep 2021 14:15:03 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 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-20210930_051512_722267_C2955DB8 X-CRM114-Status: GOOD ( 27.82 ) 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="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 T24gMzAvMDkvMjAyMSAxNDoxMCwgVG9tYXN6IEZpZ2Egd3JvdGU6Cj4gMjAyMeW5tDnmnIgzMOaX pSjmnKgpIDIwOjUxIExlZSBKb25lcyA8bGVlLmpvbmVzQGxpbmFyby5vcmc+Ogo+Pgo+PiBPbiBU aHUsIDMwIFNlcCAyMDIxLCBUb21hc3ogRmlnYSB3cm90ZToKPj4KPj4KPj4gSXMgdGhhdCB0aGUg c2FtZSBhcyBleHBvcnRpbmcgc3ltYm9scyB0byBmcmFtZXdvcmsgQVBJcz8KPj4KPj4gU2luY2Ug dGhpcyBpcyBhbHJlYWR5IGEgbWV0aG9kIEdLSSB1c2VzIHRvIGFsbG93IGV4dGVybmFsIG1vZHVs ZXMgdG8KPj4gaW50ZXJhY3Qgd2l0aCB0aGUgY29yZSBrZXJuZWwvZnJhbWV3b3Jrcy4gIEhvd2V2 ZXIsIGl0J3Mgbm90IHBvc3NpYmxlCj4+IHRvIHVwc3RyZWFtIHRoZXNlIHdpdGhvdXQgYW4gdXBz dHJlYW0gdXNlciBmb3IgZWFjaCBvbmUuCj4gCj4gTm90IG5lY2Vzc2FyeSB0aGUgY29yZSBmcmFt ZXdvcmtzLCBjb3VsZCBhbHNvIGJlIGNoYW5naW5nIHRoZSB3YXlzIHRoZQo+IGV4aXN0aW5nIGRy aXZlcnMgcmVnaXN0ZXIgdG8gYWxsb3cgYWRkaXRpb25hbCBkcml2ZXJzIHRvIGV4dGVuZCB0aGUK PiBmdW5jdGlvbmFsaXR5IHJhdGhlciB0aGFuIGNvbXBsZXRlbHkgb3ZlcndyaXRlIHRoZW0uIAoK WWVzLCB0aGUgZmlyc3QgdXNlciBjb3VsZCBiZSB3aXRoaW4gdGhlIGtlcm5lbCBhZnRlciBtb2Rp Znlpbmcgc29tZSBvZgp0aGUgZHJpdmVycy4KCj4gSXQncyByZWFsbHkgaGFyZAo+IHRvIHRlbGwg d2hhdCB0aGUgcmlnaHQgd2F5IHdvdWxkIGJlIHdpdGhvdXQga25vd2luZyB0aGUgZXhhY3QgdGhp bmdzCj4gdGhleSBmaW5kIG1pc3NpbmcgaW4gdGhlIHVwc3RyZWFtIGRyaXZlcnMuIEFzIGZvciB1 cHN0cmVhbSB1c2VycywgdGhpcwo+IGlzIGV4YWN0bHkgdGhlIHBvaW50IC0gdXBzdHJlYW0gaXMg YSBiaWRpcmVjdGlvbmFsIGVmZm9ydCwgb25lIHRha2VzCj4gZnJvbSBpdCBhbmQgc2hvdWxkIGNv bnRyaWJ1dGUgdGhpbmdzIGJhY2suCj4gCj4gR2VuZXJhbGx5LCB0aGUgc3Vic3lzdGVtcyBiZWlu ZyBtZW50aW9uZWQgaGVyZSBhcmUgc28gYmFzaWMgKGNsb2NrLAo+IHBpbmN0cmwsIHJ0YyksIHRo YXQgSSByZWFsbHkgY2FuJ3QgaW1hZ2luZSB3aGF0IGtpbmQgb2Ygcm9ja2V0IHNjaWVuY2UKPiBv bmUgbWlnaHQgd2FudCB0byBoaWRlIGZvciBjb21wZXRpdGl2ZSByZWFzb25zLi4uIElmIGl0J3Mg Zm9yIGFuCj4gZW50aXJlIFNvQywgSSB3b25kZXIgd2h5IEludGVsIGFuZCBBTUQgZG9uJ3QgaGF2 ZSBzaW1pbGFyIGNvbmNlcm5zIGFuZAo+IGNvbnRyaWJ1dGUgc3VwcG9ydCBmb3IgdGhlaXIgbmV3 ZXN0IGhhcmR3YXJlIGZhciBiZWZvcmUgdGhlIHJlbGVhc2UuCgpMZWUgdXNlZCB0aGUgYXJndW1l bnQgb2Ygbm90LWRpc2Nsb3NpbmctZWRnZS1odyBidXQgSSBhbHNvIGRvbid0IHNlZQptdWNoIG9m IGl0IGluIHRoZSBjYXNlIG9mIGZldyBkcml2ZXJzIG5lZWRlZCB0byBiZSBvdmVycmlkZGVuLiBK dXN0CmJ1bmNoIG9mIHJlZ2lzdGVycyBmb3IgdGhlIHNhbWUgc3R1ZmYgd2UgaGF2ZSBzaW5lIDgg eWVhcnMuIFJhdGhlciB0aGUKdmVuZG9yIGRvZXMgbm90IHdhbnQgdG8gY29tbWl0IGVmZm9ydCB0 b3dhcmRzIHVwc3RyZWFtaW5nIHRoZXNlLi4uCgoKQmVzdCByZWdhcmRzLApLcnp5c3p0b2YKCl9f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1r ZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpo dHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJu ZWwK