From patchwork Tue Nov 16 07:07:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sankeerth Billakanti (QUIC)" X-Patchwork-Id: 12621599 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B922CC433EF for ; Tue, 16 Nov 2021 07:09:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9A5B761B5F for ; Tue, 16 Nov 2021 07:09:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229712AbhKPHMo (ORCPT ); Tue, 16 Nov 2021 02:12:44 -0500 Received: from alexa-out-sd-01.qualcomm.com ([199.106.114.38]:36751 "EHLO alexa-out-sd-01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230081AbhKPHMc (ORCPT ); Tue, 16 Nov 2021 02:12:32 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1637046576; x=1668582576; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=cNmbT8/rJgG7bxdZj/1w3/CE2sIkSDiX/FJADzDXwos=; b=rOd5TyTC08bE991gy8PBKN20gcciR0nrX/fg0YDj5wJ6B9DYlgPfj1v4 QYJzlJ9LdnIxWSJaGhUwy+AKZLXWR7lrTS9CR4NM3+5odKEMDlzZnvlW5 Ih+PC6ATMIi8BE+isc6ijk7gZRCaoQW8j1VCdnG8NGX/MnQCy8SIP/eNU 8=; Received: from unknown (HELO ironmsg04-sd.qualcomm.com) ([10.53.140.144]) by alexa-out-sd-01.qualcomm.com with ESMTP; 15 Nov 2021 23:08:26 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg04-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Nov 2021 23:08:26 -0800 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Mon, 15 Nov 2021 23:08:11 -0800 Received: from sbillaka-linux.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Mon, 15 Nov 2021 23:08:07 -0800 From: Sankeerth Billakanti To: , , , CC: Sankeerth Billakanti , , , , , , , , Subject: [PATCH v1 3/3] phy: qcom: Program SSC only if supported by sink Date: Tue, 16 Nov 2021 12:37:38 +0530 Message-ID: <1637046458-20607-4-git-send-email-quic_sbillaka@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1637046458-20607-1-git-send-email-quic_sbillaka@quicinc.com> References: <1637046458-20607-1-git-send-email-quic_sbillaka@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Some legacy eDP sinks may not support SSC. The support for SSC is indicated through an opts flag from the controller driver. This change will enable SSC only if the sink supports it. Signed-off-by: Sankeerth Billakanti Reviewed-by: Stephen Boyd --- drivers/phy/qualcomm/phy-qcom-edp.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c index 6d9404d..06ba609 100644 --- a/drivers/phy/qualcomm/phy-qcom-edp.c +++ b/drivers/phy/qualcomm/phy-qcom-edp.c @@ -335,9 +335,11 @@ static int qcom_edp_phy_power_on(struct phy *phy) writel(0x00, edp->tx0 + TXn_LANE_MODE_1); writel(0x00, edp->tx1 + TXn_LANE_MODE_1); - ret = qcom_edp_configure_ssc(edp); - if (ret) - return ret; + if (edp->dp_opts.ssc) { + ret = qcom_edp_configure_ssc(edp); + if (ret) + return ret; + } ret = qcom_edp_configure_pll(edp); if (ret)