From patchwork Tue Mar 16 17:12:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuogee Hsieh X-Patchwork-Id: 12143155 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 24A9BC433E0 for ; Tue, 16 Mar 2021 17:13:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C59B265120 for ; Tue, 16 Mar 2021 17:13:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239022AbhCPRNU (ORCPT ); Tue, 16 Mar 2021 13:13:20 -0400 Received: from m42-2.mailgun.net ([69.72.42.2]:49570 "EHLO m42-2.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236572AbhCPRNN (ORCPT ); Tue, 16 Mar 2021 13:13:13 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1615914793; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=TQTBRIJj8Bo5J118t2/zBRZB9UcCbCThJruh4BKjMdM=; b=bZz5I8J4dt5/hViokocoJmzlwcBbAb2fNpQxM7M5h6LbkHBJWS81N2u94YgsfeVLTxpBN25F /VLhfnhUdQL0qKc9SCc0VmMWjXjo7Xzgkln17WNEWF9s2pirpKYx+9Kmts010yy/Lw+MnwhQ 3RqazxEEbjUTjS0D6lYnIdCk3Jo= X-Mailgun-Sending-Ip: 69.72.42.2 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-n07.prod.us-west-2.postgun.com with SMTP id 6050e718e2200c0a0dff5001 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Tue, 16 Mar 2021 17:12:56 GMT Sender: khsieh=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id BF9CFC43462; Tue, 16 Mar 2021 17:12:56 +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 5E59BC433C6; Tue, 16 Mar 2021 17:12:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 5E59BC433C6 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 v3] phy: qcom-qmp: add hbr3_hbr2 voltage and premphasis swing table Date: Tue, 16 Mar 2021 10:12:41 -0700 Message-Id: <1615914761-12300-1-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 Changes in v3: -- replace space with tab at hbr3_hbr2 table Signed-off-by: Kuogee Hsieh Reviewed-by: Stephen Boyd --- 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..6aaa59c 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)