From patchwork Mon Jun 17 12:52:33 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 10999185 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 EABFE14B6 for ; Mon, 17 Jun 2019 12:53:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D958E28754 for ; Mon, 17 Jun 2019 12:53:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CDBE22891A; Mon, 17 Jun 2019 12:53:00 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham 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 4F5F428754 for ; Mon, 17 Jun 2019 12:53:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728030AbfFQMw7 (ORCPT ); Mon, 17 Jun 2019 08:52:59 -0400 Received: from michel.telenet-ops.be ([195.130.137.88]:40264 "EHLO michel.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727541AbfFQMw7 (ORCPT ); Mon, 17 Jun 2019 08:52:59 -0400 Received: from ramsan ([84.194.111.163]) by michel.telenet-ops.be with bizsmtp id Rosg2000e3XaVaC06osgLK; Mon, 17 Jun 2019 14:52:46 +0200 Received: from rox.of.borg ([192.168.97.57]) by ramsan with esmtp (Exim 4.90_1) (envelope-from ) id 1hcr7n-0001ru-Hn; Mon, 17 Jun 2019 14:52:39 +0200 Received: from geert by rox.of.borg with local (Exim 4.90_1) (envelope-from ) id 1hcr7n-0003al-FW; Mon, 17 Jun 2019 14:52:39 +0200 From: Geert Uytterhoeven To: Michael Turquette , Stephen Boyd Cc: linux-clk@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH 0/5] clk: renesas: rcar-gen2/gen3: Switch to .determine_rate() Date: Mon, 17 Jun 2019 14:52:33 +0200 Message-Id: <20190617125238.13761-1-geert+renesas@glider.be> X-Mailer: git-send-email 2.17.1 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 Mike, Stephen, As the .round_rate() callback returns a long clock rate, it cannot return clock rates that do not fit in signed long, but do fit in unsigned long. The newer .determine_rate() callback does not suffer from this limitation. In addition, .determine_rate() provides the ability to specify a rate range. Hence this patch series switches the Z (CPU) and SD clocks in the R-Car Gen2 and Gen3 clock drivers from the .round_rate() to the .determine_rate() callback. Note that the "div6" clock driver hasn't been converted yet, so div6 clocks still use .round_rate(). This has been tested on R-Car M2-W and R-Car M3-N, and should have no behavioral impact. To be queued in clk-renesas-for-v5.3, if approved. Thanks for your comments! Geert Uytterhoeven (5): clk: renesas: rcar-gen2-legacy: Switch Z clock to .determine_rate() clk: renesas: rcar-gen2: Switch Z clock to .determine_rate() clk: renesas: rcar-gen3: Switch Z clocks to .determine_rate() clk: renesas: rcar-gen3: Avoid double table iteration in SD .set_rate() clk: renesas: rcar-gen3: Switch SD clocks to .determine_rate() drivers/clk/renesas/clk-rcar-gen2.c | 23 ++++++----- drivers/clk/renesas/rcar-gen2-cpg.c | 23 ++++++----- drivers/clk/renesas/rcar-gen3-cpg.c | 64 ++++++++++++++++------------- 3 files changed, 61 insertions(+), 49 deletions(-)