From patchwork Mon Mar 25 11:26:41 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kulkarni, Vandita" X-Patchwork-Id: 10868905 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D35C91390 for ; Mon, 25 Mar 2019 11:46:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BD4C5292BE for ; Mon, 25 Mar 2019 11:46:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B14F829285; Mon, 25 Mar 2019 11:46:40 +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=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 60BDA29285 for ; Mon, 25 Mar 2019 11:46:37 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9B0FE6E32A; Mon, 25 Mar 2019 11:46:36 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 72C6F6E32A for ; Mon, 25 Mar 2019 11:46:35 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 25 Mar 2019 04:46:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,256,1549958400"; d="scan'208";a="331757637" Received: from vandita-desktop.iind.intel.com ([10.223.74.201]) by fmsmga005.fm.intel.com with ESMTP; 25 Mar 2019 04:46:32 -0700 From: Vandita Kulkarni To: intel-gfx@lists.freedesktop.org Date: Mon, 25 Mar 2019 16:56:41 +0530 Message-Id: <1553513202-13863-1-git-send-email-vandita.kulkarni@intel.com> X-Mailer: git-send-email 1.9.1 Subject: [Intel-gfx] [v3 1/2] drm/i915/icl: Ungate ddi clocks before IO enable X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ville.syrjala@intel.com, jani.nikula@intel.com MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP IO enable sequencing needs ddi clocks enabled. These clocks will be gated at a later point in the enable sequence. v2: Fix the commit header (Uma) v3: Remove the redundant read (Ville) Signed-off-by: Vandita Kulkarni Reviewed-by: Uma Shankar --- drivers/gpu/drm/i915/icl_dsi.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c index 92440ff..4aef5dd 100644 --- a/drivers/gpu/drm/i915/icl_dsi.c +++ b/drivers/gpu/drm/i915/icl_dsi.c @@ -589,6 +589,12 @@ static void gen11_dsi_map_pll(struct intel_encoder *encoder, val |= DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, port); } I915_WRITE(DPCLKA_CFGCR0_ICL, val); + + for_each_dsi_port(port, intel_dsi->ports) { + val &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port); + } + I915_WRITE(DPCLKA_CFGCR0_ICL, val); + POSTING_READ(DPCLKA_CFGCR0_ICL); mutex_unlock(&dev_priv->dpll_lock);