From patchwork Sun Jan 29 13:24:34 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Keeping X-Patchwork-Id: 9544045 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 6219A60488 for ; Sun, 29 Jan 2017 13:31:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5189327D5D for ; Sun, 29 Jan 2017 13:31:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 436FC27F80; Sun, 29 Jan 2017 13:31:30 +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 1CBD327D5D for ; Sun, 29 Jan 2017 13:31:29 +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 1cXpZl-0000KO-0S; Sun, 29 Jan 2017 13:31:25 +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-0003sH-Af; Sun, 29 Jan 2017 13:25:48 +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=QxAxGMixh+ZDZdph8YzxuqBduoWlw0Ffg569lU5AtnI=; b=WuxdJctKpArnUWHnsu6xqiJe73WzgGU4dGKcndv4FbAhA9Mo+1C7rOhs3bL0daNBncyJP7fvezv1Z9J0LMcfxJqCoTqrWPinclWUHCQClJIVtyInKhWz2qvRAmSE6jCpI4f3bpYTYVWhgoGCmH8xSrOYcbNanKeTIctciImpD0zRCbGGd8/fPj4aCYtJeB5curJfAYYTKpkbWE60Xj3yeBTl2qmOfyk2xR974fYa9sTsD9ZDZjMIKCBZF+dBsws9wMsbHmBWAkKfVwUoKEodVUN82colzYZjyRySQT+9+z5G2iB4yi2PhJ5qBkeiVDTVUo+dyEO7VPYstp7ftmUs3w==; 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 1cXpTj-000362-Js; Sun, 29 Jan 2017 13:25:11 +0000 From: John Keeping To: Mark Yao Subject: [PATCH v3 14/24] drm/rockchip: dw-mipi-dsi: ensure PHY is reset Date: Sun, 29 Jan 2017 13:24:34 +0000 Message-Id: <20170129132444.25251-15-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_613612_DBD42036 X-CRM114-Status: UNSURE ( 7.87 ) 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 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 Reviewed-by: Chris Zhong Reviewed-by: Sean Paul --- v3: - Add Chris' Reviewed-by Unchanged in v2 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 c2e0ba96e0a0..5b3068e9e8db 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c @@ -397,7 +397,10 @@ 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) |