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=-9.1 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=unavailable 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 01870C0044C for ; Tue, 13 Nov 2018 11:17:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BB8FF223D0 for ; Tue, 13 Nov 2018 11:17:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amarulasolutions.com header.i=@amarulasolutions.com header.b="CT5tzK3F" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BB8FF223D0 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-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732502AbeKMVOm (ORCPT ); Tue, 13 Nov 2018 16:14:42 -0500 Received: from mail-pf1-f195.google.com ([209.85.210.195]:36379 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732444AbeKMVOl (ORCPT ); Tue, 13 Nov 2018 16:14:41 -0500 Received: by mail-pf1-f195.google.com with SMTP id d13-v6so5887848pfo.3 for ; Tue, 13 Nov 2018 03:17:03 -0800 (PST) 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=yqEP2BzZ2jXeAZHhd1kTnxj7Hp6aFHA67iUShP1YZAg=; b=CT5tzK3FIIhy1SV/dTYRZshieXYn7lZws4/N07d+OFM1y06E6ppEDYyoNj4z+DiXHJ PKZOi3485lOdSDvdmpJfx1lIHydjsICF2QEc3hqlBgn9iLvI0p8LwUgC39dsfYEJVgI1 QjDVkRit1N407Ya9Vob3dqzxremR9OfsQ4uRc= 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=yqEP2BzZ2jXeAZHhd1kTnxj7Hp6aFHA67iUShP1YZAg=; b=tTvUZRJHgIhPFHQnlED/0plde2EhNQxqh8s+FwxzfJo8zIcjc2qj7euVdeeQuqhkaA SlYNYLUEiSLWZ8DZSIspVq4IdTJfD7/ftvAon/G7pSLEUkG+XEpli33mYHHMgoWUm9ZU OhJ1wTU+UF8iyCm+pkpgIxnVquEoHfGXuTMLJGh+W7AN7TkwTBQuh7n+eM2X+/2geF2G gYGd1iLqp4D8rXB6D33FJZxJbE1UtZQcPsrRiqFbDbT+KEpTPsX/E9j/ZCkmmrEYPdRe YLnSVGuLS9VSGgbaR33YJ/aZpNa45uyDDdDBrppfr9tf1WLOi6pdFjeUhTVFHeAO6JoN Afdg== X-Gm-Message-State: AGRZ1gL6YyFRhLD7Ej1H1p0GitWB/Gp/6B2aMiv9ekakTYo822kLiKtv /OtHzNNXvjaGeLUnW/NpgYFg9Q== X-Google-Smtp-Source: AJdET5cmMrWyjSS6C6l9voHS7ZTX4u3lJ5zBE7LPx1Im9I1AC8wCAE6QwyFo514E2Hznjq6ngUFrDA== X-Received: by 2002:a62:1709:: with SMTP id 9mr3422529pfx.249.1542107822825; Tue, 13 Nov 2018 03:17:02 -0800 (PST) Received: from localhost.localdomain ([2401:4900:3670:3f11:bc71:2ef7:4a39:e260]) by smtp.gmail.com with ESMTPSA id 27-v6sm28531377pfm.36.2018.11.13.03.16.57 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 13 Nov 2018 03:17:02 -0800 (PST) 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, linux-amarula@amarulasolutions.com Cc: Jagan Teki Subject: [PATCH v4 02/26] clk: sunxi-ng: Add check for minimal rate to NKM PLLs Date: Tue, 13 Nov 2018 16:46:09 +0530 Message-Id: <20181113111633.20189-3-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.18.0.321.gffc6fa0e3 In-Reply-To: <20181113111633.20189-1-jagan@amarulasolutions.com> References: <20181113111633.20189-1-jagan@amarulasolutions.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some NKM PLLs doesn't work well when their output clock rate is set below certain rate. So, add support for minimal rate for relevant PLLs. Signed-off-by: Jagan Teki Acked-by: Stephen Boyd --- drivers/clk/sunxi-ng/ccu_nkm.c | 3 +++ drivers/clk/sunxi-ng/ccu_nkm.h | 1 + 2 files changed, 4 insertions(+) diff --git a/drivers/clk/sunxi-ng/ccu_nkm.c b/drivers/clk/sunxi-ng/ccu_nkm.c index 841840e35e61..6b5ad990f802 100644 --- a/drivers/clk/sunxi-ng/ccu_nkm.c +++ b/drivers/clk/sunxi-ng/ccu_nkm.c @@ -125,6 +125,9 @@ static unsigned long ccu_nkm_round_rate(struct ccu_mux_internal *mux, if (nkm->common.features & CCU_FEATURE_FIXED_POSTDIV) rate *= nkm->fixed_post_div; + if (rate < nkm->min_rate) + return nkm->min_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 cc6efb70a102..ff5bd00f429f 100644 --- a/drivers/clk/sunxi-ng/ccu_nkm.h +++ b/drivers/clk/sunxi-ng/ccu_nkm.h @@ -35,6 +35,7 @@ struct ccu_nkm { struct ccu_mux_internal mux; unsigned int fixed_post_div; + unsigned int min_rate; struct ccu_common common; }; -- 2.18.0.321.gffc6fa0e3