From patchwork Thu Jul 13 07:49:18 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Quentin Schulz X-Patchwork-Id: 107559 Delivered-To: patch@linaro.org Received: by 10.140.101.44 with SMTP id t41csp1882978qge; Thu, 13 Jul 2017 00:49:45 -0700 (PDT) X-Received: by 10.84.215.135 with SMTP id l7mr8705051pli.194.1499932185221; Thu, 13 Jul 2017 00:49:45 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1499932185; cv=none; d=google.com; s=arc-20160816; b=uuEZ0I2WeBe8/Vvum8DWany5IBcrD+/W6Bnz2J00liRusN8G8YZY5NTjc0YFpQSbaK TEd76XNnO0svIU53ofvOKQVsToso9FwV291XKaBo3uWAvvJH4/qA3l40ZR34uuDUY6Lp VrXcHKKYF5E3yyHSJvhBpFcBl/5n8ZsOBll2jnjm6OJm0ZMzSBKBm1kKQL/xqofVEHy4 nsOK9rLZav5oaagDAlvttR1MEeaKFm70th+0A8kRDFXkRlDavCeQz2tfQqMmJylD7vlj +DFvgP6gKabBfm6/3kqKzaGqsbNbZ1faouMJJOwbz+x+YAJ4KXuWZMWtXlw1Vsln5+aK WUzQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:message-id:date:subject:cc:to:from :arc-authentication-results; bh=GgCFkVjyJWXbywcXnhWdgA0r/bOdoFRJhobYEty0UtE=; b=D1BdAiVB+7G0IBzZtlC7iPdn3axoyDo856/JZnBXK+hSK7B5ermFS91yY7fjk2a5+3 EIcQIohCSZEm7kE8x2MTP2caPONXbzq7bCEbWhofMTvi47JElNB9M4YDIzfwx4ZwUeaR BUsfojWhD6cO7ONVeiaOk+JxH9b0gASpRzv4ZF1j/FPzkD/Zg5yxwby64EFmxdr6o0GX wcYUhpEHt6+/179+RSCryBhaC+JkYDiNodBTM8LZljsEhpSuIYeac4NPxsM839E2dfWo tej/YDNAdUWGBbYw7Iam+Y3ycD/PjxRyy7iKGO0UEwYM+ipmHimb4mjfdrzmUVj0u+91 P/og== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id v5si3678035pgb.328.2017.07.13.00.49.44; Thu, 13 Jul 2017 00:49:45 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751229AbdGMHtn (ORCPT + 7 others); Thu, 13 Jul 2017 03:49:43 -0400 Received: from mail.free-electrons.com ([62.4.15.54]:47987 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750807AbdGMHtm (ORCPT ); Thu, 13 Jul 2017 03:49:42 -0400 Received: by mail.free-electrons.com (Postfix, from userid 110) id 888AF21FCE; Thu, 13 Jul 2017 09:49:38 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on mail.free-electrons.com X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,SHORTCIRCUIT shortcircuit=ham autolearn=disabled version=3.4.0 Received: from localhost.localdomain (LStLambert-657-1-97-87.w90-63.abo.wanadoo.fr [90.63.216.87]) by mail.free-electrons.com (Postfix) with ESMTPSA id 2124621FBC; Thu, 13 Jul 2017 09:49:38 +0200 (CEST) From: Quentin Schulz To: mturquette@baylibre.com, sboyd@codeaurora.org, robh+dt@kernel.org, mark.rutland@arm.com, lgirdwood@gmail.com, broonie@kernel.org, nicolas.ferre@microchip.com, alexandre.belloni@free-electrons.com, linux@armlinux.org.uk, boris.brezillon@free-electrons.com, perex@perex.cz, tiwai@suse.com Cc: Quentin Schulz , cyrille.pitchen@wedev4u.fr, thomas.petazzoni@free-electrons.com, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 0/9] add support for Sama5d2 audio PLLs and enable ClassD Date: Thu, 13 Jul 2017 09:49:18 +0200 Message-Id: <20170713074927.10882-1-quentin.schulz@free-electrons.com> X-Mailer: git-send-email 2.11.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This patch series adds support for the audio PLLs and enables ClassD that can be found in ATMEL Sama5d2 SoC. There are two audio PLLs (PMC and PAD) that shares the same parent (FRAC). FRAC can output between 620 and 700MHz and only multiply the rate of its parent. The two audio PLLs then divide the FRAC rate to best match the asked rate. I basically took an old patch series posted by Nicolas on December, 6th 2016[1][2][3] and the comments Boris did on the first version[4] Nicolas sent on July, 15th 2015. I also fixed the function used to compute the divisors, removed useless spinlocks and added a range to the audio frac PLL to stay within vendor's supported range. Clocks that are children of gclk (generated-clk) are now able to propagate rate to the audio PLL clocks when needed. However, there are multiple children clocks that could technically change the rate of audio_pll (via gck). With the rate locking introduced in Jerome Brunet's patch series[5], the first consumer to enable the clock will be the one definitely setting the rate of the clock. Without the rate locking, the last consumer to set the rate will be able to mess with the rate. Since audio IPs are most likely to request the same rate, we enforce that the only clks able to modify gck rate are those of audio IPs. To remain consistent, we deny other clocks to be children of audio_pll. Thanks, Quentin [1] https://patchwork.kernel.org/patch/9462351/ [2] https://patchwork.kernel.org/patch/9462347/ [3] https://patchwork.kernel.org/patch/9462349/ [4] https://www.spinics.net/lists/arm-kernel/msg436120.html [5] http://www.spinics.net/lists/linux-clk/msg17927.html Cyrille Pitchen (2): ARM: dts: at91: sama5d2: add classd nodes ARM: dts: at91: sama5d2_xplained: add pin muxing and enable classd Quentin Schulz (7): clk: at91: clk-generated: remove useless divisor loop clk: at91: add audio plls to the compatible list in DT binding clk: at91: add audio pll clock drivers clk: at91: clk-generated: create function to find best_diff clk: at91: clk-generated: make gclk determine audio_pll rate ASoC: atmel-classd: remove aclk clock from DT binding ASoC: atmel-classd: remove aclk clock .../devicetree/bindings/clock/at91-clock.txt | 10 + .../devicetree/bindings/sound/atmel-classd.txt | 9 +- arch/arm/boot/dts/at91-sama5d2_xplained.dts | 16 ++ arch/arm/boot/dts/sama5d2.dtsi | 39 +++- arch/arm/mach-at91/Kconfig | 4 + drivers/clk/at91/Makefile | 2 + drivers/clk/at91/clk-audio-pll-pad.c | 206 ++++++++++++++++++ drivers/clk/at91/clk-audio-pll-pmc.c | 174 +++++++++++++++ drivers/clk/at91/clk-audio-pll.c | 239 +++++++++++++++++++++ drivers/clk/at91/clk-generated.c | 101 +++++++-- include/linux/clk/at91_pmc.h | 25 +++ sound/soc/atmel/atmel-classd.c | 47 ++-- 12 files changed, 813 insertions(+), 59 deletions(-) create mode 100644 drivers/clk/at91/clk-audio-pll-pad.c create mode 100644 drivers/clk/at91/clk-audio-pll-pmc.c create mode 100644 drivers/clk/at91/clk-audio-pll.c -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Acked-by: Boris Brezillon Acked-by: Boris Brezillon