From patchwork Sun Jan 29 13:24:33 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Keeping X-Patchwork-Id: 9544073 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 3CFB460488 for ; Sun, 29 Jan 2017 13:34:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2F8B527D76 for ; Sun, 29 Jan 2017 13:34:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2470627F88; Sun, 29 Jan 2017 13:34:53 +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=-1.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, T_DKIM_INVALID autolearn=no version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E333527D76 for ; Sun, 29 Jan 2017 13:34:52 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1cXpd5-00039k-Kf; Sun, 29 Jan 2017 13:34:51 +0000 Received: from dougal.metanate.com ([90.155.101.14] helo=metanate.com) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1cXpUD-0003sI-Af; Sun, 29 Jan 2017 13:25:51 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=simple/simple; d=metanate.com; s=stronger; h=References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From; bh=LeGbQ8phf7fOeFFwxQQzNPJeO1IYCY3UaVtNGzm9njQ=; b=l3t5VHj7n4iDiGd5fqsDM3ctTcYqHgJUhJ4Bmqla38u498XB4U2ubQZhZzGAUP/xvES/rtRGzNdRtQPXnvfH17KpVUZjMviRvLP8dsf+o1VT9TSms0Kv2a58vNXeZMD9y9uJYmopRMIWLcMV5w6SbVy+xSDW4cV5luNlpCWYNdPW5QJqWcTnHnrNe3mykADhnR1xJtax2ap2q/9mnQfylr4HcU7XqcaqERpPlLapf/JPrFxipQ0kl6ZYCt0RvR87GphDn0lmDvABP64ngrCOty+JDqvK345kDmFJcP3M0D0FbkpNthSj7rbKlMYPGBfwnxUyQERI6vr7aYk/fWLnEg==; Received: from johnkeeping.plus.com ([81.174.171.191] helo=localhost.localdomain) by shrek.metanate.com with esmtpsa (TLSv1.2:DHE-RSA-AES128-GCM-SHA256:128) (Exim 4.83_RC2) (envelope-from ) id 1cXpTi-000362-RY; Sun, 29 Jan 2017 13:25:11 +0000 From: John Keeping To: Mark Yao Subject: [PATCH v3 13/24] drm/rockchip: dw-mipi-dsi: fix escape clock rate Date: Sun, 29 Jan 2017 13:24:33 +0000 Message-Id: <20170129132444.25251-14-john@metanate.com> X-Mailer: git-send-email 2.11.0.197.gb556de5.dirty In-Reply-To: <20170129132444.25251-1-john@metanate.com> References: <20170129132444.25251-1-john@metanate.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170129_052541_655483_38306E9C X-CRM114-Status: UNSURE ( 7.63 ) X-CRM114-Notice: Please train this message. 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: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, John Keeping , Chris Zhong , 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 This clock rate is derived from the PHY PLL, so it should be calculated dynamically. Use the same calculation as the vendor kernel to derive the escape clock speed. Signed-off-by: John Keeping Reviewed-by: Chris Zhong Reviewed-by: Sean Paul --- v3: - Improve the commit message a bit - Add Chris' Reviewed-by Unchanged in v2 drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c index 290282e86d16..c2e0ba96e0a0 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c @@ -710,11 +710,13 @@ static void dw_mipi_dsi_disable(struct dw_mipi_dsi *dsi) static void dw_mipi_dsi_init(struct dw_mipi_dsi *dsi) { + u32 esc_clk_division = (dsi->lane_mbps >> 3) / 20 + 1; + dsi_write(dsi, DSI_PWR_UP, RESET); dsi_write(dsi, DSI_PHY_RSTZ, PHY_DISFORCEPLL | PHY_DISABLECLK | PHY_RSTZ | PHY_SHUTDOWNZ); dsi_write(dsi, DSI_CLKMGR_CFG, TO_CLK_DIVIDSION(10) | - TX_ESC_CLK_DIVIDSION(7)); + TX_ESC_CLK_DIVIDSION(esc_clk_division)); } static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi,