From patchwork Mon Feb 11 13:58:52 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 10805919 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A44B61390 for ; Mon, 11 Feb 2019 14:00:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9620A2A267 for ; Mon, 11 Feb 2019 14:00:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8AADF2A442; Mon, 11 Feb 2019 14:00:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 365742A267 for ; Mon, 11 Feb 2019 14:00:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726263AbfBKN7Q (ORCPT ); Mon, 11 Feb 2019 08:59:16 -0500 Received: from kirsty.vergenet.net ([202.4.237.240]:34752 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726041AbfBKN7Q (ORCPT ); Mon, 11 Feb 2019 08:59:16 -0500 Received: from reginn.horms.nl (watermunt.horms.nl [80.127.179.77]) by kirsty.vergenet.net (Postfix) with ESMTPA id 6B86525BDAB; Tue, 12 Feb 2019 00:59:13 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=verge.net.au; s=mail; t=1549893553; bh=ljerEY1JRU9rufbM7bw4+EIZZ2tWcZFjMXlD25nC7uI=; h=From:To:Cc:Subject:Date:From; b=frjt+H+LR+WY25J7sPe+hZyHRZ4f0eSOvkmEptIGcrC1Q3V20k9Kp7mKGvm1fm1OF XZQmQV5VHNjcN7WnOO/+xTte/r929NRK1OwYhjRWBF+Oj7VyNRlB2pKS/veWhV41yu AHKiH6pXopgjcNv0jeBIQT0MdiLCTbW1u/4pv/SA= Received: by reginn.horms.nl (Postfix, from userid 7100) id 76C6E940362; Mon, 11 Feb 2019 14:59:11 +0100 (CET) From: Simon Horman To: Geert Uytterhoeven Cc: Magnus Damm , linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, Fabrizio Castro , Biju Das , Andrew Morton , linux-kernel@vger.kernel.org, Simon Horman Subject: [PATCH v5 0/6] clk: renesas: r8a77990, r8a774c0: Add Z2 clock Date: Mon, 11 Feb 2019 14:58:52 +0100 Message-Id: <20190211135858.23635-1-horms+renesas@verge.net.au> X-Mailer: git-send-email 2.11.0 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Hi, this series adds the Z2 clock as a clock with both a fixed and variable divisor with a parent of PLL0 to the CPG-MSSR drivers for the R-Car E3 (r8a77990) and RZ/G2E (r8a774c0) SoCs. In order to do so this series: 1. Parameterise Z and Z2 clock fixed divisor in shared Gen-3 CPG driver code to allow fixed divisors other than 2 - the E3 Z2 clock has a fixed divisor of 4 2. Parameterise offset of Z and Z2 clock control bits - the offsets on E3 differ to other R-Car Gen 3 SoCs 3. Support Z and Z2 clocks with high frequency parents. The parent of the E3 Z2 clock, PLL0, is 4.8GHz and thus when expressed in HZ must be treated as a 64bit value. 4. Actually add the Z2 clocks Changes since v4 * Separate patch to add DIV64_U64_ROUND_CLOSEST helper * Accumulate review tags Changes since v3 ---------------- * Add and use DIV64_U64_ROUND_CLOSEST in the patch to allow high frequency parents. This corrects the patch for 32bit platforms. * Accumulate review and testing tags. Changes since v2 ---------------- * Parameterise control bit offset rather than using a quirk * Revised RZ/G2E patch - I was confused and updating the file for the wrong part number Testing Overview ---------------- v4 of this patchset was tested on Ebisu-4D/E3 with top of renesas-devel-20190207-v5.0-rc5. This allowed CPUFreq to be successfully exercised. v4 of the patchset was also tested for regressions Salvator-X/M3-W ES1.0. There is no overall code-change between v4 and v5 of this patchset. This v3 of this patchset was been independently tested RZ/G2E. It is not expected that v5 will have any behavioural differences on that (or any other 64bit) platform. Patches List by Author ---------------------- Simon Horman (4): clk: renesas: rcar-gen3: Parameterise Z and Z2 clock offset math64: New DIV64_U64_ROUND_CLOSEST helper clk: renesas: rcar-gen3: Support Z and Z2 clocks with high frequency parents clk: renesas: r8a774c0: Add Z2 clock Takeshi Kihara (2): clk: renesas: rcar-gen3: Parameterise Z and Z2 clock fixed divisor clk: renesas: r8a77990: Add Z2 clock drivers/clk/renesas/r8a774a1-cpg-mssr.c | 4 ++-- drivers/clk/renesas/r8a774c0-cpg-mssr.c | 1 + drivers/clk/renesas/r8a7795-cpg-mssr.c | 5 +++-- drivers/clk/renesas/r8a7796-cpg-mssr.c | 5 +++-- drivers/clk/renesas/r8a77965-cpg-mssr.c | 2 +- drivers/clk/renesas/r8a77990-cpg-mssr.c | 1 + drivers/clk/renesas/rcar-gen3-cpg.c | 27 +++++++++++++-------------- drivers/clk/renesas/rcar-gen3-cpg.h | 4 ++++ include/linux/math64.h | 13 +++++++++++++ 9 files changed, 41 insertions(+), 21 deletions(-)