From patchwork Thu Feb 18 16:51:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuogee Hsieh X-Patchwork-Id: 384972 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6E4DC433E6 for ; Thu, 18 Feb 2021 17:48:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 673ED64EC7 for ; Thu, 18 Feb 2021 17:48:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234677AbhBRRr7 (ORCPT ); Thu, 18 Feb 2021 12:47:59 -0500 Received: from z11.mailgun.us ([104.130.96.11]:41480 "EHLO z11.mailgun.us" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230315AbhBRQwR (ORCPT ); Thu, 18 Feb 2021 11:52:17 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1613667106; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=6LqVTeB3qkKtgOGKEPy1XFDayXheTUcI36X8Z2+YBLE=; b=Q/FamPsqIcOd+Tb87s5MzVh/CLhO+Z8I7crSGBY6cfw3I1H/9XPr4gQLGwt4K1qHLB5tKD4e +10787GyjqUJHovVVs8l2BdT2lSNDZod1+sk5IaKcMh/52ydPB5NQwtHy9rxGyw0k5i4CxZD HYBGZY1mBav+pqkd/M1kiSmEE4g= X-Mailgun-Sending-Ip: 104.130.96.11 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n03.prod.us-west-2.postgun.com with SMTP id 602e9b07ba08663830168ebc (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 18 Feb 2021 16:51:19 GMT Sender: khsieh=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 87C4DC43464; Thu, 18 Feb 2021 16:51:19 +0000 (UTC) Received: from khsieh-linux1.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: khsieh) by smtp.codeaurora.org (Postfix) with ESMTPSA id 2336EC433ED; Thu, 18 Feb 2021 16:51:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 2336EC433ED Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=khsieh@codeaurora.org From: Kuogee Hsieh To: robdclark@gmail.com, sean@poorly.run, swboyd@chromium.org, vkoul@kernel.org, agross@kernel.org, bjorn.andersson@linaro.org Cc: tanmay@codeaurora.org, abhinavk@codeaurora.org, aravindh@codeaurora.org, khsieh@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] phy/qualcomm: add hbr3_hbr2 voltage and premphasis swing table Date: Thu, 18 Feb 2021 08:51:10 -0800 Message-Id: <1613667070-27613-1-git-send-email-khsieh@codeaurora.org> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add hbr3_hbr2 voltage and premphasis swing table to support HBR3 link rate. Changes in V2: -- replaced upper case with lower case at hbr3_hbr2 table Signed-off-by: Kuogee Hsieh --- drivers/phy/qualcomm/phy-qcom-qmp.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index 0939a9e..4dcc074 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -2965,6 +2965,20 @@ static void qcom_qmp_phy_dp_aux_init(struct qmp_phy *qphy) qphy->pcs + QSERDES_V3_DP_PHY_AUX_INTERRUPT_MASK); } +static const u8 qmp_dp_v3_pre_emphasis_hbr3_hbr2[4][4] = { + { 0x00, 0x0c, 0x15, 0x1a }, + { 0x02, 0x0e, 0x16, 0xff }, + { 0x02, 0x11, 0xff, 0xff }, + { 0x04, 0xff, 0xff, 0xff } +}; + +static const u8 qmp_dp_v3_voltage_swing_hbr3_hbr2[4][4] = { + { 0x02, 0x12, 0x16, 0x1a }, + { 0x09, 0x19, 0x1f, 0xff }, + { 0x10, 0x1f, 0xff, 0xff }, + { 0x1f, 0xff, 0xff, 0xff } +}; + static const u8 qmp_dp_v3_pre_emphasis_hbr_rbr[4][4] = { { 0x00, 0x0c, 0x14, 0x19 }, { 0x00, 0x0b, 0x12, 0xff }, @@ -3000,8 +3014,13 @@ static void qcom_qmp_phy_configure_dp_tx(struct qmp_phy *qphy) drvr_en = 0x10; } - voltage_swing_cfg = qmp_dp_v3_voltage_swing_hbr_rbr[v_level][p_level]; - pre_emphasis_cfg = qmp_dp_v3_pre_emphasis_hbr_rbr[v_level][p_level]; + if (dp_opts->link_rate <= 2700) { + voltage_swing_cfg = qmp_dp_v3_voltage_swing_hbr_rbr[v_level][p_level]; + pre_emphasis_cfg = qmp_dp_v3_pre_emphasis_hbr_rbr[v_level][p_level]; + } else { + voltage_swing_cfg = qmp_dp_v3_voltage_swing_hbr3_hbr2[v_level][p_level]; + pre_emphasis_cfg = qmp_dp_v3_pre_emphasis_hbr3_hbr2[v_level][p_level]; + } /* TODO: Move check to config check */ if (voltage_swing_cfg == 0xFF && pre_emphasis_cfg == 0xFF)