From patchwork Thu Sep 1 04:41:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?UmV4LUJDIENoZW4gKOmZs+afj+i+sCk=?= X-Patchwork-Id: 601993 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 51D58C6FA82 for ; Thu, 1 Sep 2022 04:42:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232126AbiIAEmE (ORCPT ); Thu, 1 Sep 2022 00:42:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58422 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231700AbiIAEmB (ORCPT ); Thu, 1 Sep 2022 00:42:01 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 916EEE01D5; Wed, 31 Aug 2022 21:41:59 -0700 (PDT) X-UUID: 7d27c801494c4d3082f70223134eb126-20220901 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=vK3zv2X4SEvxbtBXVU/SS8Fp1ynU3qEQSwzWGO+YrBI=; b=I2wSE8RnDUfmoEMu1AgBfUYNjQQ6xQTCQ0gBdd7+mMbQq3b98S20DbUzUHdJPi322ncAumcqOlp8929VBiAGVL61WMQzbf1IavgZpccCToJ+GvOnBhSh5B3L0p3YEmhMAokK3N3ZwiW4EdTkMfJevQH8FTQ9wm7KtPlu5lPpCQ0=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.10, REQID:2c1daf11-7c80-43c0-887a-449aafe8c6d0, OB:0, L OB:0,IP:0,URL:25,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Relea se_Ham,ACTION:release,TS:0 X-CID-META: VersionHash:84eae18, CLOUDID:9a18c520-1c20-48a5-82a0-25f9c331906d, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:11|1,File: nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: 7d27c801494c4d3082f70223134eb126-20220901 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 2107922538; Thu, 01 Sep 2022 12:41:53 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.186) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Thu, 1 Sep 2022 12:41:51 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Thu, 1 Sep 2022 12:41:51 +0800 From: Bo-Chen Chen To: , , , , , , , , , CC: , , , , , , , , , , , , , , Bo-Chen Chen Subject: [PATCH v17 01/10] dt-bindings: mediatek,dp: Add Display Port binding Date: Thu, 1 Sep 2022 12:41:40 +0800 Message-ID: <20220901044149.16782-2-rex-bc.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220901044149.16782-1-rex-bc.chen@mediatek.com> References: <20220901044149.16782-1-rex-bc.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org From: Markus Schneider-Pargmann This controller is present on several mediatek hardware. Currently mt8195 and mt8395 have this controller without a functional difference, so only one compatible field is added. The controller can have two forms, as a normal display port and as an embedded display port. Signed-off-by: Markus Schneider-Pargmann Signed-off-by: Guillaume Ranquet Signed-off-by: Bo-Chen Chen Reviewed-by: Rob Herring --- .../display/mediatek/mediatek,dp.yaml | 116 ++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml new file mode 100644 index 000000000000..ff781f2174a0 --- /dev/null +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml @@ -0,0 +1,116 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/mediatek/mediatek,dp.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek Display Port Controller + +maintainers: + - Chun-Kuang Hu + - Jitao shi + +description: | + MediaTek DP and eDP are different hardwares and there are some features + which are not supported for eDP. For example, audio is not supported for + eDP. Therefore, we need to use two different compatibles to describe them. + In addition, We just need to enable the power domain of DP, so the clock + of DP is generated by itself and we are not using other PLL to generate + clocks. + +properties: + compatible: + enum: + - mediatek,mt8195-dp-tx + - mediatek,mt8195-edp-tx + + reg: + maxItems: 1 + + nvmem-cells: + maxItems: 1 + description: efuse data for display port calibration + + nvmem-cell-names: + const: dp_calibration_data + + power-domains: + maxItems: 1 + + interrupts: + maxItems: 1 + + ports: + $ref: /schemas/graph.yaml#/properties/ports + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: Input endpoint of the controller, usually dp_intf + + port@1: + $ref: /schemas/graph.yaml#/$defs/port-base + unevaluatedProperties: false + description: Output endpoint of the controller + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + properties: + data-lanes: + description: | + number of lanes supported by the hardware. + The possible values: + 0 - For 1 lane enabled in IP. + 0 1 - For 2 lanes enabled in IP. + 0 1 2 3 - For 4 lanes enabled in IP. + minItems: 1 + maxItems: 4 + required: + - data-lanes + + required: + - port@0 + - port@1 + + max-linkrate-mhz: + enum: [ 1620, 2700, 5400, 8100 ] + description: maximum link rate supported by the hardware. + +required: + - compatible + - reg + - interrupts + - ports + - max-linkrate-mhz + +additionalProperties: false + +examples: + - | + #include + #include + dptx@1c600000 { + compatible = "mediatek,mt8195-dp-tx"; + reg = <0x1c600000 0x8000>; + power-domains = <&spm MT8195_POWER_DOMAIN_DP_TX>; + interrupts = ; + max-linkrate-mhz = <8100>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + dptx_in: endpoint { + remote-endpoint = <&dp_intf0_out>; + }; + }; + port@1 { + reg = <1>; + dptx_out: endpoint { + data-lanes = <0 1 2 3>; + }; + }; + }; + };