From patchwork Tue Nov 1 03:22:06 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: zhengxing X-Patchwork-Id: 9406869 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id CDB1560721 for ; Tue, 1 Nov 2016 03:24:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BF5EF28A36 for ; Tue, 1 Nov 2016 03:24:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B2E8A293D4; Tue, 1 Nov 2016 03:24:42 +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=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 4AF9028A36 for ; Tue, 1 Nov 2016 03:24:41 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1c1Pez-0006XF-BM; Tue, 01 Nov 2016 03:22:49 +0000 Received: from regular1.263xmail.com ([211.150.99.131]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1c1Peu-0006W7-J5; Tue, 01 Nov 2016 03:22:46 +0000 Received: from zhengxing?rock-chips.com (unknown [192.168.167.239]) by regular1.263xmail.com (Postfix) with ESMTP id 60BAC62A0; Tue, 1 Nov 2016 11:22:14 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED4: 1 Received: from localhost.localdomain (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id C6F023A0; Tue, 1 Nov 2016 11:22:12 +0800 (CST) X-RL-SENDER: zhengxing@rock-chips.com X-FST-TO: heiko@sntech.de X-SENDER-IP: 103.29.142.67 X-LOGIN-NAME: zhengxing@rock-chips.com X-UNIQUE-TAG: <83184d08b99f51b9a7c0721f146b8abc> X-ATTACHMENT-NUM: 0 X-SENDER: zhengxing@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [103.29.142.67]) by smtp.263.net (Postfix) whith ESMTP id 31744DD28EY; Tue, 01 Nov 2016 11:22:14 +0800 (CST) From: Xing Zheng To: heiko@sntech.de Subject: [PATCH] clk: rockchip: optimize the configuration for 800MHz and 1GHz on RK3399 Date: Tue, 1 Nov 2016 11:22:06 +0800 Message-Id: <1477970526-26388-1-git-send-email-zhengxing@rock-chips.com> X-Mailer: git-send-email 2.7.4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161031_202245_110798_4B85E446 X-CRM114-Status: UNSURE ( 6.53 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: huangtao@rock-chips.com, Xing Zheng , Michael Turquette , zhangqing@rock-chips.com, Stephen Boyd , linux-kernel@vger.kernel.org, dianders@google.com, linux-rockchip@lists.infradead.org, briannorris@google.com, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 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 Usually, the 800MHz and 1GHz are supplied for CPLL and NPLL in the RK3399. But dues to the carelessly copying from RK3036 when the RK3399 bringing up, the refdiv == 6, it will increase the lock time, and it is not an optimal configuration. Please let's fix them for the lock time and jitter are lower: 800 MHz: - FVCO == 2.4 GHz, revdiv == 1. 1 GHz: - FVCO == 3 GHz, revdiv == 1. Signed-off-by: Xing Zheng --- drivers/clk/rockchip/clk-rk3399.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/clk/rockchip/clk-rk3399.c b/drivers/clk/rockchip/clk-rk3399.c index a5a3f41..28aff45 100644 --- a/drivers/clk/rockchip/clk-rk3399.c +++ b/drivers/clk/rockchip/clk-rk3399.c @@ -77,7 +77,7 @@ static struct rockchip_pll_rate_table rk3399_pll_rates[] = { RK3036_PLL_RATE(1104000000, 1, 46, 1, 1, 1, 0), RK3036_PLL_RATE(1100000000, 12, 550, 1, 1, 1, 0), RK3036_PLL_RATE(1008000000, 1, 84, 2, 1, 1, 0), - RK3036_PLL_RATE(1000000000, 6, 500, 2, 1, 1, 0), + RK3036_PLL_RATE(1000000000, 1, 125, 3, 1, 1, 0), RK3036_PLL_RATE( 984000000, 1, 82, 2, 1, 1, 0), RK3036_PLL_RATE( 960000000, 1, 80, 2, 1, 1, 0), RK3036_PLL_RATE( 936000000, 1, 78, 2, 1, 1, 0), @@ -87,7 +87,7 @@ static struct rockchip_pll_rate_table rk3399_pll_rates[] = { RK3036_PLL_RATE( 864000000, 1, 72, 2, 1, 1, 0), RK3036_PLL_RATE( 840000000, 1, 70, 2, 1, 1, 0), RK3036_PLL_RATE( 816000000, 1, 68, 2, 1, 1, 0), - RK3036_PLL_RATE( 800000000, 6, 400, 2, 1, 1, 0), + RK3036_PLL_RATE( 800000000, 1, 100, 3, 1, 1, 0), RK3036_PLL_RATE( 700000000, 6, 350, 2, 1, 1, 0), RK3036_PLL_RATE( 696000000, 1, 58, 2, 1, 1, 0), RK3036_PLL_RATE( 676000000, 3, 169, 2, 1, 1, 0),