From patchwork Wed Aug 31 12:48:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johnson Wang X-Patchwork-Id: 12960730 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 82B0AECAAD1 for ; Wed, 31 Aug 2022 13:39:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:CC:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=WQK1AyNx0JLk94WzgAavNJ5OIP6EmsCAETgWNY7s0Ns=; b=KNOeB0L2YUl8jvVdc1sapGkNN+ wNNPf5L9X2enNo+55mBkZk/wuxblQmv6gu08TxqmBBK06zDVAdqQsmWZeyiAkDWVbwcSPeESAqNsI E7lDIs7vzNJARUkjlzDcskDl7Vq4LAANy9jxRSVlENeXAXzYbc+H+7nB25biK0z3H+mrXoIe5znrd FKTaGJmB+2dM+/L/FAdNkSwdNLVOhA35HWqxONMoBBGIE6oFRJums2/ZopRnrZm4bAIGfa7VzL2Oa huc1sQ0QWAG+0haWR/78RYW51zlwtx3EaujCQTy5047fD52GcVnXrfwaFK7JSBqcs86pD/8r+zwm7 oq8vW31A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oTNwR-006Qli-GW; Wed, 31 Aug 2022 13:39:39 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oTNwO-006QkA-Ct; Wed, 31 Aug 2022 13:39:38 +0000 X-UUID: 1eb89ea952804f5a92a8c67eb3fab1a8-20220831 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=WQK1AyNx0JLk94WzgAavNJ5OIP6EmsCAETgWNY7s0Ns=; b=JPaXXtY5MT4GUStUHVDL4pTzWuGA+yirB/+kCz+Tg+KpNMhVzSkYgvSJpwQ4rYTQnRSygdqX4JP2AGDi2Q9buR5p4eL8YLQUnPU4NupeMXgJkt7XPcQJARpcC1ZdY4EQQ7+MRz602/q6yvGt39LyHtURBGlGwznCyGOQ7dyEJNs=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.10,REQID:116a28f2-33aa-462b-8945-2d06fd1baa6f,OB:0,L OB:0,IP:0,URL:25,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release _Ham,ACTION:release,TS:25 X-CID-META: VersionHash:84eae18,CLOUDID:b7382956-e800-47dc-8adf-0c936acf4f1b,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: 1eb89ea952804f5a92a8c67eb3fab1a8-20220831 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 765681697; Wed, 31 Aug 2022 06:39:28 -0700 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Wed, 31 Aug 2022 20:48:52 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Wed, 31 Aug 2022 20:48:52 +0800 From: Johnson Wang To: , , , CC: , , , , , , Johnson Wang , Edward-JW Yang Subject: [PATCH 2/4] dt-bindings: arm: mediatek: Add new bindings of MediaTek frequency hopping Date: Wed, 31 Aug 2022 20:48:48 +0800 Message-ID: <20220831124850.7748-3-johnson.wang@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220831124850.7748-1-johnson.wang@mediatek.com> References: <20220831124850.7748-1-johnson.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220831_063936_463843_8CABBF2E X-CRM114-Status: GOOD ( 14.83 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.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 | 49 +++++++++++++++++++ 1 file changed, 49 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..c5d76410538b --- /dev/null +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,fhctl.yaml @@ -0,0 +1,49 @@ +# 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,fhctl + + reg: + maxItems: 1 + + mediatek,hopping-ssc-percents: + description: | + Determine the enablement of frequency hopping feature and the percentage + of spread spectrum clocking for PLLs. + $ref: /schemas/types.yaml#/definitions/uint32-matrix + items: + items: + - description: PLL id that is expected to enable frequency hopping. + - description: The percentage of spread spectrum clocking for one PLL. + minimum: 0 + maximum: 8 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include + fhctl: fhctl@1000ce00 { + compatible = "mediatek,fhctl"; + reg = <0x1000c000 0xe00>; + mediatek,hopping-ssc-percents = ; + };