From patchwork Mon Sep 19 17:17:26 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Keeping X-Patchwork-Id: 9340091 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 BF7D46077A for ; Mon, 19 Sep 2016 17:25:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AC52E275A2 for ; Mon, 19 Sep 2016 17:25:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9D5B828BED; Mon, 19 Sep 2016 17:25:44 +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=-4.1 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,T_DKIM_INVALID 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 40262275A2 for ; Mon, 19 Sep 2016 17:25:44 +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 1bm2K6-0007iJ-Bd; Mon, 19 Sep 2016 17:25:42 +0000 Received: from casper.infradead.org ([2001:770:15f::2]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1bm2Dd-00006n-QN; Mon, 19 Sep 2016 17:19:01 +0000 Received: from dougal.metanate.com ([90.155.101.14] helo=metanate.com) by casper.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1bm2D0-000696-39; Mon, 19 Sep 2016 17:18:23 +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=3UD9hA7MIpjyxmrWcxyND8g1llD4LR9uD5jUkv+12JU=; b=kJmtHJUSIrgfmcvVlZYwSvVjULlC0lmD711AVVLyoKb7sg28Xva6/zGOOeYkeo41JBLJWDU92W4Pu7KUV0yYS2zPRFZjnEHMABI9YVRdNUYAYN5DqbR0Nu+q//oS6WFqeaaSCJZ/rV8ypHoBL7zHRprj8X1kqk6eWiOz3mCqLpPjblX8uzgedAFHDRMpd3OkzJI9644gO/md7NoXJ74Ejs1BjVWT4mtx3YDjszvVmiRvjNCVQvNWoQynxNMNSJwr9+wdqvMkoZ4A2KXseheBrS33PR0s4Ahoc6hQQTDN8fE0i2qunkQ5lBoZtuChrCp4KOEFa1sBw/PEY8RxkWX97w==; Received: from brian ([192.168.88.1] helo=leela.metanate.com) by shrek.metanate.com with esmtpsa (TLSv1.2:DHE-RSA-AES128-GCM-SHA256:128) (Exim 4.83_RC2) (envelope-from ) id 1bm2CX-00078x-4N; Mon, 19 Sep 2016 18:17:53 +0100 From: John Keeping To: Mark Yao Subject: [PATCH 15/26] drm/rockchip: dw-mipi-dsi: ensure PHY is reset Date: Mon, 19 Sep 2016 18:17:26 +0100 Message-Id: <20160919171747.28512-17-john@metanate.com> X-Mailer: git-send-email 2.10.0.278.g4f427b1.dirty In-Reply-To: <20160919171747.28512-1-john@metanate.com> References: <20160919171747.28512-1-john@metanate.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160919_181822_189939_E1CC4C7B X-CRM114-Status: UNSURE ( 9.01 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Heiko Stuebner , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, John Keeping , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Also don't power up the DSI host at this point since this is not necessary in order to configure the PHY and we do so later when selecting video or command mode. Signed-off-by: John Keeping --- drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c index 8854b8670d72..73c28e205fc5 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c @@ -398,7 +398,10 @@ static int dw_mipi_dsi_phy_init(struct dw_mipi_dsi *dsi) return testdin; } - dsi_write(dsi, DSI_PWR_UP, POWERUP); + /* Start by clearing PHY state */ + dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_UNTESTCLR); + dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_TESTCLR); + dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_UNTESTCLR); dw_mipi_dsi_phy_write(dsi, 0x10, BYPASS_VCO_RANGE | VCO_RANGE_CON_SEL(vco) |