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=-8.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 ADAC4C46475 for ; Tue, 23 Oct 2018 15:51:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 746C120652 for ; Tue, 23 Oct 2018 15:51:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amarulasolutions.com header.i=@amarulasolutions.com header.b="Imiflp8p" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 746C120652 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=amarulasolutions.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-clk-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728275AbeJXAPM (ORCPT ); Tue, 23 Oct 2018 20:15:12 -0400 Received: from mail-pg1-f196.google.com ([209.85.215.196]:43933 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728366AbeJXAPL (ORCPT ); Tue, 23 Oct 2018 20:15:11 -0400 Received: by mail-pg1-f196.google.com with SMTP id n10-v6so124768pgv.10 for ; Tue, 23 Oct 2018 08:51:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=o90/LNGE9upjKhzjm4op/FMEilKM/vCgfq8hDXmKf64=; b=Imiflp8pAB0VUbU3b//nP/qfOOs9pPcI2UxiPmJMGI1ZPfR+nxptAquSUYIsT5doA5 4S2HXsqpScsl1Nq3AbDgfUvQz63mZoRIVxzfYb6qUzBINDm3vF8tETPxifYLyoGPGgqT abK0Zl2QvfHgYu7TeNXCXPBliH4IGtcEV+7t0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=o90/LNGE9upjKhzjm4op/FMEilKM/vCgfq8hDXmKf64=; b=May8c52NVF0u7YIL224Ok+K3C2EGy2jEwuDxlZtOU9y5129YsPWiq49TGML/exPolU nsu+tTZuXhQSrxogA+fyN3h+QWfFWsB7HW9wbueqJgG00mjzSRrmCR5v1EyJOh76WOmJ fN3Kw3F17BdD1CA3pmq8qBmr2ARS8mscDQ8SQQ6zKzUexnjw+SJk1jlIJNur9V+SpM+g CLk0bbq5aSOKCO2pjn2ymcETdK6olfpuFJd0oSnuTlpfOkTUB19nONjZ+mTM8etEwWaZ AXyCRzrmVZpQoN1t/MrfJG9F99AutozEdrpMwtJ8lWk2eZQNRyhDCS7vxv8OkyqT6tF4 uH6A== X-Gm-Message-State: ABuFfohN3+rtjC+kCVGg/QKfyPLN5deLF2Gd0YO4T0d+AOEGzEX1r44I rQk78/F/MgkD9rPOP9Lg6Dtb7Q== X-Google-Smtp-Source: ACcGV618MFfAxH9ZOLOgjXtx3sU4kllTNV131HDzCFD6/jCITjF+8GvPpW//NyAt/wn5FCe4GTtMBw== X-Received: by 2002:a62:d085:: with SMTP id p127-v6mr24323446pfg.202.1540309874761; Tue, 23 Oct 2018 08:51:14 -0700 (PDT) Received: from localhost.localdomain ([27.7.51.1]) by smtp.gmail.com with ESMTPSA id o75-v6sm7442829pfg.0.2018.10.23.08.51.07 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 23 Oct 2018 08:51:14 -0700 (PDT) From: Jagan Teki To: Maxime Ripard , Chen-Yu Tsai , Icenowy Zheng , Jernej Skrabec , Vasily Khoruzhick , Rob Herring , Mark Rutland , Catalin Marinas , Will Deacon , David Airlie , dri-devel@lists.freedesktop.org, Michael Turquette , Stephen Boyd , linux-clk@vger.kernel.org, Michael Trimarchi , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com Cc: Jagan Teki Subject: [PATCH v2 03/15] clk: sunxi-ng: Add check for maximum rate to NKM PLLs Date: Tue, 23 Oct 2018 21:20:23 +0530 Message-Id: <20181023155035.9101-4-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.18.0.321.gffc6fa0e3 In-Reply-To: <20181023155035.9101-1-jagan@amarulasolutions.com> References: <20181023155035.9101-1-jagan@amarulasolutions.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Some NKM PLLs, frequency can be set above PLL working range. Add a constraint for maximum supported rate. This way, drivers can specify which is maximum allowed rate for PLL. Signed-off-by: Jagan Teki --- Changes for v2: - new patch drivers/clk/sunxi-ng/ccu_nkm.c | 7 +++++++ drivers/clk/sunxi-ng/ccu_nkm.h | 1 + 2 files changed, 8 insertions(+) diff --git a/drivers/clk/sunxi-ng/ccu_nkm.c b/drivers/clk/sunxi-ng/ccu_nkm.c index d17539dc88dd..574fd2cd2a79 100644 --- a/drivers/clk/sunxi-ng/ccu_nkm.c +++ b/drivers/clk/sunxi-ng/ccu_nkm.c @@ -132,6 +132,13 @@ static unsigned long ccu_nkm_round_rate(struct ccu_mux_internal *mux, return rate; } + if (nkm->max_rate && rate > nkm->max_rate) { + rate = nkm->max_rate; + if (nkm->common.features & CCU_FEATURE_FIXED_POSTDIV) + rate /= nkm->fixed_post_div; + return rate; + } + ccu_nkm_find_best(*parent_rate, rate, &_nkm); rate = *parent_rate * _nkm.n * _nkm.k / _nkm.m; diff --git a/drivers/clk/sunxi-ng/ccu_nkm.h b/drivers/clk/sunxi-ng/ccu_nkm.h index ff5bd00f429f..c82590481188 100644 --- a/drivers/clk/sunxi-ng/ccu_nkm.h +++ b/drivers/clk/sunxi-ng/ccu_nkm.h @@ -36,6 +36,7 @@ struct ccu_nkm { unsigned int fixed_post_div; unsigned int min_rate; + unsigned int max_rate; struct ccu_common common; }; -- 2.18.0.321.gffc6fa0e3