From patchwork Thu Aug 4 02:38:31 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bibby Hsieh X-Patchwork-Id: 9262537 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 0078D60865 for ; Thu, 4 Aug 2016 02:39:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E4F0127F60 for ; Thu, 4 Aug 2016 02:39:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D80D028174; Thu, 4 Aug 2016 02:39:50 +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, UNPARSEABLE_RELAY 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 6FD4E27F60 for ; Thu, 4 Aug 2016 02:39:50 +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 1bV8ZZ-0005Sh-UW; Thu, 04 Aug 2016 02:39:49 +0000 Received: from [210.61.82.183] (helo=mailgw01.mediatek.com) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bV8ZA-0005Mq-Bz; Thu, 04 Aug 2016 02:39:26 +0000 Received: from mtkhts09.mediatek.inc [(172.21.101.70)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 1590579665; Thu, 04 Aug 2016 10:38:47 +0800 Received: from localhost.localdomain (10.21.14.115) by mtkhts09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 14.3.266.1; Thu, 4 Aug 2016 10:38:33 +0800 From: Bibby Hsieh To: David Airlie , Matthias Brugger , Daniel Vetter , , Subject: [PATCH v3 3/3] drm/mediatek: fix the wrong pixel clock when resolution is 4K Date: Thu, 4 Aug 2016 10:38:31 +0800 Message-ID: <1470278311-22528-4-git-send-email-bibby.hsieh@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1470278311-22528-1-git-send-email-bibby.hsieh@mediatek.com> References: <1470278311-22528-1-git-send-email-bibby.hsieh@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-20160803_193925_001707_A512DA90 X-CRM114-Status: GOOD ( 10.65 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Junzhi Zhao , Bibby Hsieh , linux-kernel@vger.kernel.org, Cawa Cheng , Mao Huang , CK Hu , Thierry Reding , Philipp Zabel , YT Shen , Yingjoe Chen , Sascha Hauer , linux-arm-kernel@lists.infradead.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Junzhi Zhao Pixel clock should be 297MHz when resolution is 4K. Signed-off-by: Junzhi Zhao Signed-off-by: Bibby Hsieh --- drivers/gpu/drm/mediatek/mtk_dpi.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index d05ca79..a90af59 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -438,10 +438,14 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi, } pix_rate = 1000UL * mode->clock; - if (mode->clock <= 74000) + if (mode->clock <= 27000) + factor = 16 * 3; + else if (mode->clock <= 74250) factor = 8 * 3; - else + else if (mode->clock <= 167000) factor = 4 * 3; + else + factor = 2 * 3; pll_rate = pix_rate * factor; dev_dbg(dpi->dev, "Want PLL %lu Hz, pixel clock %lu Hz\n",