From patchwork Wed Sep 14 12:45:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johnson Wang X-Patchwork-Id: 606763 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 B1703C6FA8A for ; Wed, 14 Sep 2022 12:46:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229907AbiINMqK (ORCPT ); Wed, 14 Sep 2022 08:46:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42726 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229580AbiINMqI (ORCPT ); Wed, 14 Sep 2022 08:46:08 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 24C747969E; Wed, 14 Sep 2022 05:45:59 -0700 (PDT) X-UUID: 490d2d4d0cf043c5b3f2b2624bdf58ee-20220914 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=1WJfzgGyc/RdkhB8YoMvTc7KpSrhJc6zReOlwA2QmYY=; b=jZY5xXyMKWPxY1DQW1/FtpDb8gj18U8hbUtXzmj2MhOlpUqhqjAHaqpKVDoYytzzu46HH79yVVXyaf661qdhI/qlw5dQrNjtEO2lI4F8EaQ77nYXJ+fNw/tHlmqwoEKxnTtEvLDgRsmvwwtJb/CLcCywUzwwDqmwE6sxhyAa2OY=; X-CID-P-RULE: Spam_GS6885AD X-CID-O-INFO: VERSION:1.1.11, REQID:a3c33b73-d23b-4cac-903b-3f4730362522, IP:0, U RL:25,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Spam_GS6885AD,ACT ION:quarantine,TS:120 X-CID-INFO: VERSION:1.1.11, REQID:a3c33b73-d23b-4cac-903b-3f4730362522, IP:0, URL :25,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Spam_GS981B3D,ACTIO N:quarantine,TS:120 X-CID-META: VersionHash:39a5ff1, CLOUDID:91ae6bec-2856-4fce-b125-09d4c7ebe045, B ulkID:220914204556VWXQQ3R7,BulkQuantity:0,Recheck:0,SF:28|17|19|48,TC:nil, Content:0,EDM:-3,IP:nil,URL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: 490d2d4d0cf043c5b3f2b2624bdf58ee-20220914 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 43009186; Wed, 14 Sep 2022 20:45:55 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs11n2.mediatek.inc (172.21.101.187) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Wed, 14 Sep 2022 20:45:54 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 14 Sep 2022 20:45:53 +0800 From: Johnson Wang To: , , , CC: , , , , , , Johnson Wang , Edward-JW Yang Subject: [PATCH v2 2/4] dt-bindings: arm: mediatek: Add new bindings of MediaTek frequency hopping Date: Wed, 14 Sep 2022 20:45:50 +0800 Message-ID: <20220914124552.16964-3-johnson.wang@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220914124552.16964-1-johnson.wang@mediatek.com> References: <20220914124552.16964-1-johnson.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add the new binding documentation for MediaTek frequency hopping and spread spectrum clocking control. Co-developed-by: Edward-JW Yang Signed-off-by: Edward-JW Yang Signed-off-by: Johnson Wang --- .../bindings/arm/mediatek/mediatek,fhctl.yaml | 47 +++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/mediatek/mediatek,fhctl.yaml diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,fhctl.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,fhctl.yaml new file mode 100644 index 000000000000..7b0fd0889bb6 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,fhctl.yaml @@ -0,0 +1,47 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/mediatek/mediatek,fhctl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek frequency hopping and spread spectrum clocking control + +maintainers: + - Edward-JW Yang + +description: | + Frequency hopping control (FHCTL) is a piece of hardware that control + some PLLs to adopt "hopping" mechanism to adjust their frequency. + Spread spectrum clocking (SSC) is another function provided by this hardware. + +properties: + compatible: + const: mediatek,mt8186-fhctl + + reg: + maxItems: 1 + + clocks: + description: Phandles of the PLL with FHCTL hardware capability. + + mediatek,hopping-ssc-percents: + description: The percentage of spread spectrum clocking for one PLL. + $ref: /schemas/types.yaml#/definitions/uint32 + maximum: 8 + +required: + - compatible + - reg + - clocks + +additionalProperties: false + +examples: + - | + #include + fhctl: fhctl@1000ce00 { + compatible = "mediatek,mt8186-fhctl"; + reg = <0x1000c000 0xe00>; + clocks = <&apmixedsys CLK_APMIXED_MSDCPLL>; + mediatek,hopping-ssc-percents = <3>; + };