From patchwork Fri Jun 23 09:00:53 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Quentin Schulz X-Patchwork-Id: 106245 Delivered-To: patch@linaro.org Received: by 10.140.91.2 with SMTP id y2csp104407qgd; Fri, 23 Jun 2017 02:02:36 -0700 (PDT) X-Received: by 10.84.229.5 with SMTP id b5mr7861318plk.164.1498208556442; Fri, 23 Jun 2017 02:02:36 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1498208556; cv=none; d=google.com; s=arc-20160816; b=x6j7VoUpJ6BYXMBCzvBGIam6QsOv0onmEISDhndcyWaRyHvI97KxXSWpd62V8YwVJ0 Wy57gQGxYqRTvBC7nQuh35N2Lnp+PIz1bvNrvUyzYPxMKsSZBiwkQpOIkitZAKQ+4c50 +oDX69GoMyU8KTtUoKm62FkIJcdPqfc39xJZyUhW0xlmHy/YdG/JuJFcX1fKFQ0ZN71R 4t1fkdJnU1Srd6DIqgtr/nCCE/kDMT4b3KLouqpUoKd1l7nFU2aB+MQmdMzBDpX3I65i XiLSzGM4RSbsMX9t/eELCNaYt3TG2pnShGbGMhNr2MONHhsANQFtBEloBLGpEUNkYr0H y0Cw== 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=jNMYlPUOFFjA+z6QKywXS6UEb6+ZKKiUHsdOY0YRkok=; b=edjlhNjkBcgrTZXZEDjiXv/flo3EINKnc6zOqpO1eUByuubjWNB0J3xwj/3GaVaSsw i6XG0SOet76Y8JvyFoKSUJ24evNB5vavFZajvqLcCJsAllXWl84U1qWp9wLS/oBZVXHf 46sfjFFxlXHN7/uyjYclu09kfN9YDgsXSwd7H21ujiJCJtg+QixJgxtjHNdze/1DXQJK EVukrecO5RtSr8D6Eo+HOt0zlTZ4XpcWnhT2giLQ/212fNlQ72ZX1tDEJ/MmbaaRL+HO sadLooYr5LLG7AUcZeuPLAedP30BOBgz0YFBRzrbd1hcczEYi66pNPGgZUStRVBacrG2 jNEA== 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 34si3315084pln.382.2017.06.23.02.02.36; Fri, 23 Jun 2017 02:02:36 -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 S1754571AbdFWJCd (ORCPT + 7 others); Fri, 23 Jun 2017 05:02:33 -0400 Received: from mail.free-electrons.com ([62.4.15.54]:36187 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753734AbdFWJBU (ORCPT ); Fri, 23 Jun 2017 05:01:20 -0400 Received: by mail.free-electrons.com (Postfix, from userid 110) id 92F062092A; Fri, 23 Jun 2017 11:01:17 +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 3003720904; Fri, 23 Jun 2017 11:01:17 +0200 (CEST) From: Quentin Schulz To: mturquette@baylibre.com, sboyd@codeaurora.org, robh+dt@kernel.org, mark.rutland@arm.com, nicolas.ferre@microchip.com, alexandre.belloni@free-electrons.com, linux@armlinux.org.uk, boris.brezillon@free-electrons.com, lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com Cc: Quentin Schulz , linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, alsa-devel@alsa-project.org, thomas.petazzoni@free-electrons.com Subject: [PATCH 0/6] add support for Sama5d2 audio PLL and enable ClassD Date: Fri, 23 Jun 2017 11:00:53 +0200 Message-Id: <20170623090059.8371-1-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 PLL and enables ClassD that can be found in ATMEL Sama5d2 SoCs. 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, since there is no rate locking, we enforce that classd_gclk be the only child of audio_pll_pmc so we avoid multiple children modifiying parent's rate, and classd driver modifying parent's rate which would impact the rate of each of parent's children. 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 Cyrille Pitchen (2): ARM: dts: at91: sama5d2: add classd nodes ARM: dts: at91: sama5d2_xplained: add pin muxing and enable classd Nicolas Ferre (1): clk: at91: add audio pll clock driver Quentin Schulz (3): clk: at91: clk-generated: remove useless divisor loop clk: at91: clk-generated: create function to find best_diff clk: at91: clk-generated: make gclk determine audio_pll rate .../devicetree/bindings/clock/at91-clock.txt | 10 + 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 | 204 ++++++++++++++++++ drivers/clk/at91/clk-audio-pll-pmc.c | 175 +++++++++++++++ drivers/clk/at91/clk-audio-pll.c | 237 +++++++++++++++++++++ drivers/clk/at91/clk-generated.c | 79 +++++-- include/linux/clk/at91_pmc.h | 25 +++ sound/soc/atmel/atmel-classd.c | 20 +- 11 files changed, 772 insertions(+), 39 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: Rob Herring