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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 44B6CC76186 for ; Wed, 17 Jul 2019 10:38:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1E6302173B for ; Wed, 17 Jul 2019 10:38:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563359902; bh=EM4gS8mAGQDedVZGGONZaY9+yCWKAtPAjdPsCsgwOjA=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=GCpKZrpjQTbb+O7i9o2uL2UQGojD7ceIAJbo9I1DM6/fSVqqaoCdBEfzu3TSd6q9E tdK43qYV4jRM+n7f2MIjv2CyZesvS0tSvDDverzmatPTf4cHKPLg3Hnw3ggdCKTBxV t8b+3ebcjNwxrEayZ1RH6j1YjaXyLdyX5vsT5Bw4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726787AbfGQKiU (ORCPT ); Wed, 17 Jul 2019 06:38:20 -0400 Received: from mail.kernel.org ([198.145.29.99]:51456 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725799AbfGQKiU (ORCPT ); Wed, 17 Jul 2019 06:38:20 -0400 Received: from mail-lf1-f44.google.com (mail-lf1-f44.google.com [209.85.167.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AD69D21841; Wed, 17 Jul 2019 10:38:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563359899; bh=EM4gS8mAGQDedVZGGONZaY9+yCWKAtPAjdPsCsgwOjA=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=iRsjFQQrjNmtgbLMWeCNYdP0HGgaJWhgSbmm4IFi1xfBbXDlGPTq0g1IbbV//YZKu 2b5cV+HpOsyjs4M/rtvOjKCAF7sKti/mkOhI72YCfT6DF9ts21rHt8wmUCeKSISB9X mruzAs2Z53mWa/5mlIqXimCpnP8SxfjDE1XfYHiY= Received: by mail-lf1-f44.google.com with SMTP id 62so11179945lfa.8; Wed, 17 Jul 2019 03:38:18 -0700 (PDT) X-Gm-Message-State: APjAAAUT+Pwyh6lpjziHjZ7JyPOqJ6i/B+nPGMJt2Nv1MAlK3ubxpo3T o4afYfBP+WoJAgRe9m7nRcxUHJ7q1aE0M0czKm4= X-Google-Smtp-Source: APXvYqyz/tFKkDEsgYJcEhlF6kY6XpGjK9nVGrDgAi01UppvCkUTP4w/fba1Vfs3b/0mz9atjli4OodMVqblc2ZpNYI= X-Received: by 2002:ac2:4d1c:: with SMTP id r28mr16893853lfi.159.1563359896938; Wed, 17 Jul 2019 03:38:16 -0700 (PDT) MIME-Version: 1.0 References: <20190715124417.4787-1-l.luba@partner.samsung.com> <20190715124417.4787-27-l.luba@partner.samsung.com> <8ed83c77-57f7-78a4-e437-714cfc7b5c58@partner.samsung.com> In-Reply-To: <8ed83c77-57f7-78a4-e437-714cfc7b5c58@partner.samsung.com> From: Krzysztof Kozlowski Date: Wed, 17 Jul 2019 12:38:05 +0200 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v1 26/50] ARM: dts: exynos: align NOC100 bus OPPs in Exynos5420 To: Lukasz Luba Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "linux-samsung-soc@vger.kernel.org" , linux-clk@vger.kernel.org, mturquette@baylibre.com, sboyd@kernel.org, =?UTF-8?B?QmFydMWCb21pZWogxbtvxYJuaWVya2lld2ljeg==?= , kgene@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org, Chanwoo Choi , kyungmin.park@samsung.com, Andrzej Hajda , Marek Szyprowski , s.nawrocki@samsung.com, myungjoo.ham@samsung.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 17 Jul 2019 at 12:27, Lukasz Luba wrote: > > > On 7/17/19 12:10 PM, Krzysztof Kozlowski wrote: > > On Mon, 15 Jul 2019 at 14:44, Lukasz Luba wrote: > >> > >> The NOC100 has a parent which clock rate is set tot 400MHz. The OPPs which > >> are not possible to set are removed and new one is added. > > > > I think it is just NOC bus... or are there more of such and this is 100 MHz one? > Yes, there is a bus NOC100 with a dedicated clock tree in the HW (with > 3 muxes and one divider), which makes possible to take different PLL as > a source then WCORE have, divide the rate from it and even switch for a > while to alternative stable PLL (on the 2nd mux to SPLL (after a > divider)) to wait for main PLL rate change stability delay. Max rate is > limited to 100MHz for this NOC100 bus. I think we misunderstood each other. I am saying, that the bus is called "NOC" in the DTSI. Not NOC100. So unless there are more of NOCs, stick to existing name NOC, even if it is not the most accurate. Best regards, Krzysztof 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=-1.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,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 E421AC76192 for ; Wed, 17 Jul 2019 10:38:23 +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 B933D2077C for ; Wed, 17 Jul 2019 10:38:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="rn4pAyFy"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="iRsjFQQr" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B933D2077C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-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=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id: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=oSmLb56dKtgZZxl7eriCUW2867kCLU+RXel/oo/9XgU=; b=rn4pAyFyHxz9xI uAIA2g5kqXLRvNzxOz6wJ8I0/2EbtbjtyteOl6eV/SwGv3cv75WxntvJadbvGyqBRoF+N5vXInDPb iW2PRMFLaDzklXxncwKwm3cw376uQ3ab8RnocuM3zrPwZlaYnS1wYJx3hycrNsWidQ+75e4vh3Yvx 31rx7BoMy/MldB5Le7s5JMg7k09RE14LJpDgDJz0vA4el73jlErUcL/5IxWiLlw6X1+teOtYVgerl yMjWYb0azC9cpSlJY2GMIkkC5kWxoM3sSGW84eA9EWKW5L9BAY0m9aG8/CYIUrbqf848ib+UoAh2R 7j5cxUqTvMqGVwg6CzvA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hnhKJ-0001cn-6F; Wed, 17 Jul 2019 10:38:23 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hnhKF-0001bw-CJ for linux-arm-kernel@lists.infradead.org; Wed, 17 Jul 2019 10:38:20 +0000 Received: from mail-lf1-f52.google.com (mail-lf1-f52.google.com [209.85.167.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AA6CE2182B for ; Wed, 17 Jul 2019 10:38:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563359899; bh=EM4gS8mAGQDedVZGGONZaY9+yCWKAtPAjdPsCsgwOjA=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=iRsjFQQrjNmtgbLMWeCNYdP0HGgaJWhgSbmm4IFi1xfBbXDlGPTq0g1IbbV//YZKu 2b5cV+HpOsyjs4M/rtvOjKCAF7sKti/mkOhI72YCfT6DF9ts21rHt8wmUCeKSISB9X mruzAs2Z53mWa/5mlIqXimCpnP8SxfjDE1XfYHiY= Received: by mail-lf1-f52.google.com with SMTP id b29so8822420lfq.1 for ; Wed, 17 Jul 2019 03:38:18 -0700 (PDT) X-Gm-Message-State: APjAAAW8Kk6X7E43nArTyZvp8AYhsh7A8ixyPMhZjSffz2AvyGSNFze5 8YzswHv3K6C/uP1tu0cfHtPbUAbUM7QUcMLSg3A= X-Google-Smtp-Source: APXvYqyz/tFKkDEsgYJcEhlF6kY6XpGjK9nVGrDgAi01UppvCkUTP4w/fba1Vfs3b/0mz9atjli4OodMVqblc2ZpNYI= X-Received: by 2002:ac2:4d1c:: with SMTP id r28mr16893853lfi.159.1563359896938; Wed, 17 Jul 2019 03:38:16 -0700 (PDT) MIME-Version: 1.0 References: <20190715124417.4787-1-l.luba@partner.samsung.com> <20190715124417.4787-27-l.luba@partner.samsung.com> <8ed83c77-57f7-78a4-e437-714cfc7b5c58@partner.samsung.com> In-Reply-To: <8ed83c77-57f7-78a4-e437-714cfc7b5c58@partner.samsung.com> From: Krzysztof Kozlowski Date: Wed, 17 Jul 2019 12:38:05 +0200 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v1 26/50] ARM: dts: exynos: align NOC100 bus OPPs in Exynos5420 To: Lukasz Luba X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190717_033819_437999_64E2B806 X-CRM114-Status: GOOD ( 14.93 ) 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: mark.rutland@arm.com, devicetree@vger.kernel.org, "linux-samsung-soc@vger.kernel.org" , =?UTF-8?B?QmFydMWCb21pZWogxbtvxYJuaWVya2lld2ljeg==?= , sboyd@kernel.org, mturquette@baylibre.com, linux-kernel@vger.kernel.org, robh+dt@kernel.org, Andrzej Hajda , Chanwoo Choi , kyungmin.park@samsung.com, kgene@kernel.org, myungjoo.ham@samsung.com, s.nawrocki@samsung.com, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Marek Szyprowski Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, 17 Jul 2019 at 12:27, Lukasz Luba wrote: > > > On 7/17/19 12:10 PM, Krzysztof Kozlowski wrote: > > On Mon, 15 Jul 2019 at 14:44, Lukasz Luba wrote: > >> > >> The NOC100 has a parent which clock rate is set tot 400MHz. The OPPs which > >> are not possible to set are removed and new one is added. > > > > I think it is just NOC bus... or are there more of such and this is 100 MHz one? > Yes, there is a bus NOC100 with a dedicated clock tree in the HW (with > 3 muxes and one divider), which makes possible to take different PLL as > a source then WCORE have, divide the rate from it and even switch for a > while to alternative stable PLL (on the 2nd mux to SPLL (after a > divider)) to wait for main PLL rate change stability delay. Max rate is > limited to 100MHz for this NOC100 bus. I think we misunderstood each other. I am saying, that the bus is called "NOC" in the DTSI. Not NOC100. So unless there are more of NOCs, stick to existing name NOC, even if it is not the most accurate. Best regards, Krzysztof _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel