From patchwork Mon Dec 10 07:32:31 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weiyi Lu X-Patchwork-Id: 10720697 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 D48BC18A7 for ; Mon, 10 Dec 2018 07:33:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BC4AD29D18 for ; Mon, 10 Dec 2018 07:33:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B049929D1B; Mon, 10 Dec 2018 07:33:18 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 4B3B829D18 for ; Mon, 10 Dec 2018 07:33:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=FIDzrjhfkJfyotcvoeYkDGF7rrOWLBHl9TkCW1A88T8=; b=alF1ny01h+Fbpd XS50FG1cOMmHw0JTWXsmr+WNcXn85FdDViVtYiBqFconef1YTslFGoe/ieife8CFwmoN4EchB3kdI wjtNIn07Nagvr0PzFtthvtKsw4aKR/0IZD/GDa8rjtbi6VCuOf6Kv6rvPCM+A9Z1BhT1vSBCeRHqA XrYjckjS/zbPzNnqPXRIYAKvP+mGzm+jZ+X7iTH94ye0rFiskdYLxcmWy6Q/CpDme0vwDgTxSatBU kb+MInEoxAGiGn1jL29YvsEzXzNqnPUdXlFgnKulhpZ7A0OkALJvS7Ntgrf/44B4BcaOrS71zGlTB S7GBgppZrG2IhbM85Uow==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gWG42-0003hq-Mh; Mon, 10 Dec 2018 07:33:14 +0000 Received: from [210.61.82.183] (helo=mailgw01.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gWG3x-0003d8-GH; Mon, 10 Dec 2018 07:33:11 +0000 X-UUID: 8ef88177eb224210b3bc58ca81884f86-20181210 X-UUID: 8ef88177eb224210b3bc58ca81884f86-20181210 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 1330390238; Mon, 10 Dec 2018 15:32:52 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs03n1.mediatek.inc (172.21.101.181) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 10 Dec 2018 15:32:51 +0800 Received: from mtkslt210.mediatek.inc (10.21.14.14) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Mon, 10 Dec 2018 15:32:51 +0800 From: Weiyi Lu To: Nicolas Boichat , Matthias Brugger , Stephen Boyd , Rob Herring Subject: [PATCH v3 03/12] clk: mediatek: add configurable pcwibits and fmin to mtk_pll_data Date: Mon, 10 Dec 2018 15:32:31 +0800 Message-ID: <20181210073240.32278-5-weiyi.lu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20181210073240.32278-1-weiyi.lu@mediatek.com> References: <20181210073240.32278-1-weiyi.lu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181209_233309_676056_BB801B72 X-CRM114-Status: GOOD ( 11.67 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: James Liao , Weiyi Lu , srv_heupstream@mediatek.com, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Fan Chen , linux-mediatek@lists.infradead.org, Owen Chen , linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Owen Chen 1. pcwibits: The integer bits of pcw for plls is extend to 8 bits, add a variable to indicate this change and backward-compatible. 2. fmin: The pll freqency lower-bound is vary from 1GMhz to 1.5Ghz, add a variable to indicate platform-dependent. Signed-off-by: Owen Chen Signed-off-by: Weiyi Lu Acked-by: Sean Wang --- drivers/clk/mediatek/clk-mtk.h | 2 ++ drivers/clk/mediatek/clk-pll.c | 12 +++++++++--- 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h index f83c2bbb677e..11b5517903d0 100644 --- a/drivers/clk/mediatek/clk-mtk.h +++ b/drivers/clk/mediatek/clk-mtk.h @@ -214,8 +214,10 @@ struct mtk_pll_data { unsigned int flags; const struct clk_ops *ops; u32 rst_bar_mask; + unsigned long fmin; unsigned long fmax; int pcwbits; + int pcwibits; uint32_t pcw_reg; int pcw_shift; const struct mtk_pll_div_table *div_table; diff --git a/drivers/clk/mediatek/clk-pll.c b/drivers/clk/mediatek/clk-pll.c index f0ff5f535c7e..81400601f107 100644 --- a/drivers/clk/mediatek/clk-pll.c +++ b/drivers/clk/mediatek/clk-pll.c @@ -32,6 +32,8 @@ #define AUDPLL_TUNER_EN BIT(31) #define POSTDIV_MASK 0x7 + +/* default 7 bits integer, can be overridden with pcwibits. */ #define INTEGER_BITS 7 /* @@ -69,11 +71,13 @@ static unsigned long __mtk_pll_recalc_rate(struct mtk_clk_pll *pll, u32 fin, { int pcwbits = pll->data->pcwbits; int pcwfbits; + int ibits; u64 vco; u8 c = 0; /* The fractional part of the PLL divider. */ - pcwfbits = pcwbits > INTEGER_BITS ? pcwbits - INTEGER_BITS : 0; + ibits = pll->data->pcwibits ? pll->data->pcwibits : INTEGER_BITS; + pcwfbits = pcwbits > ibits ? pcwbits - ibits : 0; vco = (u64)fin * pcw; @@ -167,9 +171,10 @@ static void mtk_pll_set_rate_regs(struct mtk_clk_pll *pll, u32 pcw, static void mtk_pll_calc_values(struct mtk_clk_pll *pll, u32 *pcw, u32 *postdiv, u32 freq, u32 fin) { - unsigned long fmin = 1000 * MHZ; + unsigned long fmin = pll->data->fmin ? pll->data->fmin : (1000 * MHZ); const struct mtk_pll_div_table *div_table = pll->data->div_table; u64 _pcw; + int ibits; u32 val; if (freq > pll->data->fmax) @@ -193,7 +198,8 @@ static void mtk_pll_calc_values(struct mtk_clk_pll *pll, u32 *pcw, u32 *postdiv, } /* _pcw = freq * postdiv / fin * 2^pcwfbits */ - _pcw = ((u64)freq << val) << (pll->data->pcwbits - INTEGER_BITS); + ibits = pll->data->pcwibits ? pll->data->pcwibits : INTEGER_BITS; + _pcw = ((u64)freq << val) << (pll->data->pcwbits - ibits); do_div(_pcw, fin); *pcw = (u32)_pcw;