From patchwork Thu Nov 17 22:49:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuogee Hsieh X-Patchwork-Id: 13047416 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 546D1C4332F for ; Thu, 17 Nov 2022 22:50:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233619AbiKQWuF (ORCPT ); Thu, 17 Nov 2022 17:50:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47450 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232026AbiKQWuE (ORCPT ); Thu, 17 Nov 2022 17:50:04 -0500 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50CB2767A; Thu, 17 Nov 2022 14:50:03 -0800 (PST) Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2AHMbFHT030316; Thu, 17 Nov 2022 22:49:55 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=T537qOo17geAOmu1pZD6rtKP19DhOxpquTefBQYKx28=; b=DWG4h6e2djfb0NT4vrGgpg9uni/sk0txgY5Qb4bUdIJBaarRs3943jo6utrmRr7Z4oSS FO0UKc8WEVwX8xr84xRjATHX16UD9ypu9+4asvQp4sM2HFmAEYkseoU6bsdk7zbjUqVt sWKhOID182dtVUUMQiJLBRzKO/d3HE/S+kB7W2yG8ABhqS4oIm85uRDTicLmzvh2/S31 N5z/JtK0GgtPNMpHRikY3HoQm5UFCbL9RSmYWt5hcOI/KL9qG48t7Q3ABdmVNo5Hbh7K AalnClLt7X7GZQeqUTS0+KmPIemHSD1z2x4jnUzeGZO4sGpxQiwTjZvy+SguHXGjDzmX 4A== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3kwwwmg0s4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 17 Nov 2022 22:49:55 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 2AHMnsCQ005826 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 17 Nov 2022 22:49:54 GMT Received: from khsieh-linux1.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 15.2.986.36; Thu, 17 Nov 2022 14:49:53 -0800 From: Kuogee Hsieh To: , , , , , , , , , , CC: Kuogee Hsieh , , , , , Subject: [PATCH v3 1/2] arm64: dts: qcom: add data-lanes and link-freuencies into dp_out endpoint Date: Thu, 17 Nov 2022 14:49:28 -0800 Message-ID: <1668725369-6331-2-git-send-email-quic_khsieh@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1668725369-6331-1-git-send-email-quic_khsieh@quicinc.com> References: <1668725369-6331-1-git-send-email-quic_khsieh@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) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: 0kF-fTS6BwVMMUgY7jeFxII5pAUvd-G2 X-Proofpoint-GUID: 0kF-fTS6BwVMMUgY7jeFxII5pAUvd-G2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-11-17_06,2022-11-17_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 phishscore=0 spamscore=0 lowpriorityscore=0 adultscore=0 bulkscore=0 mlxscore=0 malwarescore=0 suspectscore=0 clxscore=1015 mlxlogscore=997 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2211170161 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add both data-lanes and link-frequencies property to dp_out endpoint. Also set link-frequencies to 810000 khz at herobrine platform to have max link rate limited at 810000 khz (HBR3). Signed-off-by: Kuogee Hsieh --- arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi | 9 ++++++++- arch/arm64/boot/dts/qcom/sc7180.dtsi | 5 ----- arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi | 10 +++++++++- arch/arm64/boot/dts/qcom/sc7280.dtsi | 5 ----- 4 files changed, 17 insertions(+), 12 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi index 754d2d6..6bf57fc 100644 --- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi @@ -812,7 +812,14 @@ hp_i2c: &i2c9 { status = "okay"; pinctrl-names = "default"; pinctrl-0 = <&dp_hot_plug_det>; - data-lanes = <0 1>; + ports { + port@1 { + reg = <1>; + dp_out: endpoint { + data-lanes = <0 1>; + }; + }; + }; }; &pm6150_adc { diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi index c0f6bfd..def5521 100644 --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi @@ -3116,11 +3116,6 @@ remote-endpoint = <&dpu_intf0_out>; }; }; - - port@1 { - reg = <1>; - dp_out: endpoint { }; - }; }; dp_opp_table: opp-table { diff --git a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi index 93e39fc..e8fca18 100644 --- a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi @@ -440,7 +440,15 @@ ap_i2c_tpm: &i2c14 { status = "okay"; pinctrl-names = "default"; pinctrl-0 = <&dp_hot_plug_det>; - data-lanes = <0 1>; + ports { + port@1 { + reg = <1>; + dp_out: endpoint { + data-lanes = <0 1>; + link-frequencies=<810000>; + }; + }; + }; }; &mdss_mdp { diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi index a646405..4afe53b 100644 --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi @@ -3899,11 +3899,6 @@ remote-endpoint = <&dpu_intf0_out>; }; }; - - port@1 { - reg = <1>; - dp_out: endpoint { }; - }; }; dp_opp_table: opp-table { From patchwork Thu Nov 17 22:49:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuogee Hsieh X-Patchwork-Id: 13047418 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A5EE2C43217 for ; Thu, 17 Nov 2022 22:50:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240461AbiKQWuJ (ORCPT ); Thu, 17 Nov 2022 17:50:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47486 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240402AbiKQWuH (ORCPT ); Thu, 17 Nov 2022 17:50:07 -0500 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D6201767A; Thu, 17 Nov 2022 14:50:05 -0800 (PST) Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2AHMeuJG021687; 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Thu, 17 Nov 2022 22:49:57 GMT Received: from khsieh-linux1.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 15.2.986.36; Thu, 17 Nov 2022 14:49:56 -0800 From: Kuogee Hsieh To: , , , , , , , , , , CC: Kuogee Hsieh , , , , , Subject: [PATCH v3 2/2] drm/msm/dp: add support of max dp link rate Date: Thu, 17 Nov 2022 14:49:29 -0800 Message-ID: <1668725369-6331-3-git-send-email-quic_khsieh@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1668725369-6331-1-git-send-email-quic_khsieh@quicinc.com> References: <1668725369-6331-1-git-send-email-quic_khsieh@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) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 7Tgn-baWVqQ0NqkhQO8utUHpAxUJv4sd X-Proofpoint-ORIG-GUID: 7Tgn-baWVqQ0NqkhQO8utUHpAxUJv4sd X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-11-17_06,2022-11-17_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 phishscore=0 malwarescore=0 suspectscore=0 priorityscore=1501 spamscore=0 adultscore=0 impostorscore=0 bulkscore=0 clxscore=1015 mlxlogscore=999 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2211170161 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org dp_out endpoint contains both data-lanes and link-frequencies properties. This patch parser dp_out endpoint properties and acquire dp_max_lanes and dp_max_link_rate from respective property. Finally, comparing them against both data lane and link rate read back from sink to ensure both data lane and link rate are supported by platform. In the case there is no data-lanes or link-frequencies property defined at dp_out endpoint, the default value are 4 data lanes with 5.4 Ghz link rate. Changes in v2: -- add max link rate from dtsi Changes in v3: -- parser max_data_lanes and max_dp_link_rate from dp_out endpoint Signed-off-by: Kuogee Hsieh --- arch/arm64/boot/dts/qcom/sc7280.dtsi | 1 + drivers/gpu/drm/msm/dp/dp_display.c | 4 ++++ drivers/gpu/drm/msm/dp/dp_panel.c | 7 ++++--- drivers/gpu/drm/msm/dp/dp_panel.h | 1 + drivers/gpu/drm/msm/dp/dp_parser.c | 30 ++++++++++++++++++++++-------- drivers/gpu/drm/msm/dp/dp_parser.h | 2 ++ 6 files changed, 34 insertions(+), 11 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi index 4afe53b..d456e76 100644 --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi @@ -3897,6 +3897,7 @@ reg = <0>; dp_in: endpoint { remote-endpoint = <&dpu_intf0_out>; + data-lanes = <0 1 2 3>; }; }; }; diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 29c9845..4fe2092 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -390,6 +390,10 @@ static int dp_display_process_hpd_high(struct dp_display_private *dp) struct edid *edid; dp->panel->max_dp_lanes = dp->parser->max_dp_lanes; + dp->panel->max_dp_link_rate = dp->parser->max_dp_link_rate; + + drm_dbg_dp(dp->drm_dev, "max_lanes=%d max_link_rate=%d\n", + dp->panel->max_dp_lanes, dp->panel->max_dp_link_rate); rc = dp_panel_read_sink_caps(dp->panel, dp->dp_display.connector); if (rc) diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_panel.c index 5149ceb..933fa9c 100644 --- a/drivers/gpu/drm/msm/dp/dp_panel.c +++ b/drivers/gpu/drm/msm/dp/dp_panel.c @@ -75,12 +75,13 @@ static int dp_panel_read_dpcd(struct dp_panel *dp_panel) link_info->rate = drm_dp_bw_code_to_link_rate(dpcd[DP_MAX_LINK_RATE]); link_info->num_lanes = dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK; + /* Limit data lanes from data-lanes of endpoint properity of dtsi */ if (link_info->num_lanes > dp_panel->max_dp_lanes) link_info->num_lanes = dp_panel->max_dp_lanes; - /* Limit support upto HBR2 until HBR3 support is added */ - if (link_info->rate >= (drm_dp_bw_code_to_link_rate(DP_LINK_BW_5_4))) - link_info->rate = drm_dp_bw_code_to_link_rate(DP_LINK_BW_5_4); + /* Limit link rate from link-frequencies of endpoint properity of dtsi */ + if (link_info->rate > dp_panel->max_dp_link_rate) + link_info->rate = dp_panel->max_dp_link_rate; drm_dbg_dp(panel->drm_dev, "version: %d.%d\n", major, minor); drm_dbg_dp(panel->drm_dev, "link_rate=%d\n", link_info->rate); diff --git a/drivers/gpu/drm/msm/dp/dp_panel.h b/drivers/gpu/drm/msm/dp/dp_panel.h index d861197a..f04d021 100644 --- a/drivers/gpu/drm/msm/dp/dp_panel.h +++ b/drivers/gpu/drm/msm/dp/dp_panel.h @@ -50,6 +50,7 @@ struct dp_panel { u32 vic; u32 max_dp_lanes; + u32 max_dp_link_rate; u32 max_bw_code; }; diff --git a/drivers/gpu/drm/msm/dp/dp_parser.c b/drivers/gpu/drm/msm/dp/dp_parser.c index dd73221..667981e 100644 --- a/drivers/gpu/drm/msm/dp/dp_parser.c +++ b/drivers/gpu/drm/msm/dp/dp_parser.c @@ -94,16 +94,30 @@ static int dp_parser_ctrl_res(struct dp_parser *parser) static int dp_parser_misc(struct dp_parser *parser) { struct device_node *of_node = parser->pdev->dev.of_node; - int len; - - len = drm_of_get_data_lanes_count(of_node, 1, DP_MAX_NUM_DP_LANES); - if (len < 0) { - DRM_WARN("Invalid property \"data-lanes\", default max DP lanes = %d\n", - DP_MAX_NUM_DP_LANES); - len = DP_MAX_NUM_DP_LANES; + struct device_node *endpoint; + int cnt; + u32 frequence = 0; + + endpoint = of_graph_get_endpoint_by_regs(of_node, 1, 0); + + if (endpoint) { + cnt = of_property_count_u32_elems(endpoint, "data-lanes"); + if (cnt < 0) + parser->max_dp_lanes = DP_MAX_NUM_DP_LANES; /* 4 lanes */ + else + parser->max_dp_lanes = cnt; + + cnt = of_property_count_u32_elems(endpoint, "link-frequencies"); + if (cnt < 0) { + parser->max_dp_link_rate = DP_LINK_FREQUENCY_HBR2; /* 54000 khz */ + } else { + of_property_read_u32_array(endpoint, "link-frequencies", &frequence, 1); + parser->max_dp_link_rate = frequence; + } } - parser->max_dp_lanes = len; + pr_err("%s: kuogee, lane=%d frequency=%d\n", __func__, parser->max_dp_lanes, parser->max_dp_link_rate); + return 0; } diff --git a/drivers/gpu/drm/msm/dp/dp_parser.h b/drivers/gpu/drm/msm/dp/dp_parser.h index 866c1a8..76ddb751 100644 --- a/drivers/gpu/drm/msm/dp/dp_parser.h +++ b/drivers/gpu/drm/msm/dp/dp_parser.h @@ -15,6 +15,7 @@ #define DP_LABEL "MDSS DP DISPLAY" #define DP_MAX_PIXEL_CLK_KHZ 675000 #define DP_MAX_NUM_DP_LANES 4 +#define DP_LINK_FREQUENCY_HBR2 540000 enum dp_pm_type { DP_CORE_PM, @@ -119,6 +120,7 @@ struct dp_parser { struct dp_io io; struct dp_display_data disp_data; u32 max_dp_lanes; + u32 max_dp_link_rate; struct drm_bridge *next_bridge; int (*parse)(struct dp_parser *parser);