From patchwork Sat Dec 22 16:42:49 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Katsuhiro Suzuki X-Patchwork-Id: 10741317 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 62B8613BF for ; Sat, 22 Dec 2018 16:43:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 446B3289DC for ; Sat, 22 Dec 2018 16:43:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 338BC28A00; Sat, 22 Dec 2018 16:43:17 +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 autolearn=ham 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 9F7C8289DC for ; Sat, 22 Dec 2018 16:43:16 +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: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:In-Reply-To:References: List-Owner; bh=HtnWicqgLdxO6iITWe7nDtbpRh5vGYbl72ry7RALMNI=; b=tDZ7ydJuToQliR r5czhr2NGadCwV39F5UE4XEamCAZKfHX4zg2n16SdcQiauWeX0b+XGAK5s4lHK2eiEaMuIIKIMucg kSiIbeHVrOb1WGIorOaeyd1cv3vfkHotdjj1arLoI/AOcpkae4WWTPUGemVpKeojXO5vs20qFqOVc oy8VocPilS1mh0ew8NG8uVXFOYTD7XjpTCShmoTkyybcsgpucN+yvZnKTQ3G6F18i08GBACpIR/7b +SDu7j5Q9PVN2qDscFbBvQuqnnDCt+MbfiYhNzWdpwdy3gd6rVu2SAsa20PwRyIylge+S7QYqsykb c5/cqzWixGyw2ptRXfTg==; 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 1gakMs-0008H6-PI; Sat, 22 Dec 2018 16:43:14 +0000 Received: from www1102.sakura.ne.jp ([219.94.129.142]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gakMo-0008Fo-VB; Sat, 22 Dec 2018 16:43:12 +0000 Received: from fsav403.sakura.ne.jp (fsav403.sakura.ne.jp [133.242.250.102]) by www1102.sakura.ne.jp (8.15.2/8.15.2) with ESMTP id wBMGgt7q021255; Sun, 23 Dec 2018 01:42:56 +0900 (JST) (envelope-from katsuhiro@katsuster.net) Received: from www1102.sakura.ne.jp (219.94.129.142) by fsav403.sakura.ne.jp (F-Secure/fsigk_smtp/530/fsav403.sakura.ne.jp); Sun, 23 Dec 2018 01:42:55 +0900 (JST) X-Virus-Status: clean(F-Secure/fsigk_smtp/530/fsav403.sakura.ne.jp) Received: from localhost.localdomain (183.38.232.153.ap.dti.ne.jp [153.232.38.183]) (authenticated bits=0) by www1102.sakura.ne.jp (8.15.2/8.15.2) with ESMTPSA id wBMGgqGI021248 (version=TLSv1.2 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sun, 23 Dec 2018 01:42:55 +0900 (JST) (envelope-from katsuhiro@katsuster.net) From: Katsuhiro Suzuki To: Heiko Stuebner , linux-rockchip@lists.infradead.org Subject: [PATCH] clk: rockchip: fix frac settings of GPLL clock for rk3328 Date: Sun, 23 Dec 2018 01:42:49 +0900 Message-Id: <20181222164249.25620-1-katsuhiro@katsuster.net> X-Mailer: git-send-email 2.19.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181222_084311_252825_955DD8C3 X-CRM114-Status: GOOD ( 10.63 ) 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: Katsuhiro Suzuki , linux-kernel@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 This patch fixes settings of GPLL frequency in fractional mode for rk3328. In this mode, FOUTVCO is calcurated by following formula: FOUTVCO = FREF * FBDIV / REFDIV + ((FREF * FRAC / REFDIV) >> 24) The problem is in FREF * FRAC >> 24 term. This result always lacks one from target value is specified by rate member. For example first itme of rk3328_pll_frac_rate originally has - rate : 1016064000 - refdiv: 3 - fbdiv : 127 - frac : 134217 - FREF * FBDIV / REFDIV = 1016000000 - (FREF * FRAC / REFDIV) >> 24 = 63999 Thus calculated rate is 1016063999. It seems wrong. If frac has 134218 (it is increased 1 from original value), second term is 64000. All other items have same situation. So this patch adds 1 to frac member in all items of rk3328_pll_frac_rate. Signed-off-by: Katsuhiro Suzuki Acked-by: Elaine Zhang --- drivers/clk/rockchip/clk-rk3328.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/clk/rockchip/clk-rk3328.c b/drivers/clk/rockchip/clk-rk3328.c index faa94adb2a37..65ab5c2f48b0 100644 --- a/drivers/clk/rockchip/clk-rk3328.c +++ b/drivers/clk/rockchip/clk-rk3328.c @@ -78,17 +78,17 @@ static struct rockchip_pll_rate_table rk3328_pll_rates[] = { static struct rockchip_pll_rate_table rk3328_pll_frac_rates[] = { /* _mhz, _refdiv, _fbdiv, _postdiv1, _postdiv2, _dsmpd, _frac */ - RK3036_PLL_RATE(1016064000, 3, 127, 1, 1, 0, 134217), + RK3036_PLL_RATE(1016064000, 3, 127, 1, 1, 0, 134218), /* vco = 1016064000 */ - RK3036_PLL_RATE(983040000, 24, 983, 1, 1, 0, 671088), + RK3036_PLL_RATE(983040000, 24, 983, 1, 1, 0, 671089), /* vco = 983040000 */ - RK3036_PLL_RATE(491520000, 24, 983, 2, 1, 0, 671088), + RK3036_PLL_RATE(491520000, 24, 983, 2, 1, 0, 671089), /* vco = 983040000 */ - RK3036_PLL_RATE(61440000, 6, 215, 7, 2, 0, 671088), + RK3036_PLL_RATE(61440000, 6, 215, 7, 2, 0, 671089), /* vco = 860156000 */ - RK3036_PLL_RATE(56448000, 12, 451, 4, 4, 0, 9797894), + RK3036_PLL_RATE(56448000, 12, 451, 4, 4, 0, 9797895), /* vco = 903168000 */ - RK3036_PLL_RATE(40960000, 12, 409, 4, 5, 0, 10066329), + RK3036_PLL_RATE(40960000, 12, 409, 4, 5, 0, 10066330), /* vco = 819200000 */ { /* sentinel */ }, };