From patchwork Thu Nov 9 21:50:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13451786 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 4CE9CC001B2 for ; Thu, 9 Nov 2023 21:51:25 +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:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:To:From:Date:Reply-To:Cc: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=4Wr/E2AyyYE5aA2smH6Ay0NftwM7wLUBS4TA5t0X4Ww=; b=LmersWJ87IxYKqExoW8+HNUiMr INGS0cAEwdq7JasLndHUnvuEGN1+2nt+dnKCdQVozYmBvPh/rCDZ6Yzpbaw3CnfgADOJfVEqLtK3I uIKkmrp8UMaqMr7EpA0rHM/d5PhXEFTLR43bQhh2GQyJNqOS0zkmQFIGqypFh/T4+hpJZnPHfskHO /NVX7EzXi3HGOnDk+yvfbmfYxEMYNZeb8HOcINHUzyMVewkDtjoKtWJ4yFIDS4gVJX0YD6LfSShqF /QZxtJHLvHcU7bQlOnrurB/ooHDSTMDLNYAzjSk8NxswEFx/+837dsZgtspce5V0+bT0UisC2RtTJ 28IkcE0Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r1Cvs-007IMO-0t; Thu, 09 Nov 2023 21:51:24 +0000 Received: from pidgin.makrotopia.org ([185.142.180.65]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r1Cvo-007IJa-14; Thu, 09 Nov 2023 21:51:21 +0000 Received: from local by pidgin.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96.2) (envelope-from ) id 1r1CvT-0003UA-1B; Thu, 09 Nov 2023 21:50:59 +0000 Date: Thu, 9 Nov 2023 21:50:55 +0000 From: Daniel Golle To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chunfeng Yun , Vinod Koul , Kishon Vijay Abraham I , Felix Fietkau , John Crispin , Sean Wang , Mark Lee , Lorenzo Bianconi , Matthias Brugger , AngeloGioacchino Del Regno , Andrew Lunn , Heiner Kallweit , Russell King , Alexander Couzens , Daniel Golle , Philipp Zabel , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-phy@lists.infradead.org Subject: [RFC PATCH 1/8] dt-bindings: phy: mediatek,xfi-pextp: add new bindings Message-ID: <924c2c6316e6d51a17423eded3a2c5c5bbf349d2.1699565880.git.daniel@makrotopia.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231109_135120_371206_2B7CE636 X-CRM114-Status: GOOD ( 14.45 ) 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 bindings for the MediaTek PEXTP Ethernet SerDes PHY found in the MediaTek MT7988 SoC which can operate at various interfaces modes: * USXGMII * 10GBase-R * 5GBase-R * 2500Base-X * 1000Base-X * Cisco SGMII (MAC side) Signed-off-by: Daniel Golle --- .../bindings/phy/mediatek,xfi-pextp.yaml | 71 +++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/mediatek,xfi-pextp.yaml diff --git a/Documentation/devicetree/bindings/phy/mediatek,xfi-pextp.yaml b/Documentation/devicetree/bindings/phy/mediatek,xfi-pextp.yaml new file mode 100644 index 0000000000000..948d5031af1e3 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/mediatek,xfi-pextp.yaml @@ -0,0 +1,71 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/mediatek,xfi-pextp.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek XFI PEXTP SerDes PHY + +maintainers: + - Daniel Golle + +description: | + The MediaTek XFI PEXTP SerDes PHY provides the physical SerDes lanes + used by the MediaTek USXGMII PCS. + +properties: + $nodename: + pattern: "^phy@[0-9a-f]+$" + + compatible: + const: mediatek,mt7988-xfi-pextp + + reg: + maxItems: 1 + + clocks: + items: + - description: XFI PHY clock + + resets: + items: + - description: PEXTP reset + + mediatek,usxgmii-performance-errata: + $ref: /schemas/types.yaml#/definitions/flag + description: + USXGMII0 on MT7988 suffers from a performance problem in 10GBase-R + mode which needs a work-around in the driver. The work-around is + enabled using this flag. + + "#phy-cells": + const: 0 + +required: + - compatible + - reg + - clocks + - resets + - "#phy-cells" + +additionalProperties: false + +examples: + - | + #include + #include + soc { + #address-cells = <2>; + #size-cells = <2>; + + xfi_pextp0: phy@11f20000 { + compatible = "mediatek,mt7988-xfi-pextp"; + reg = <0 0x11f20000 0 0x10000>; + clocks = <&topckgen CLK_TOP_XFI_PHY_0_XTAL_SEL>; + resets = <&watchdog MT7988_TOPRGU_XFI_PEXTP0_GRST>; + mediatek,usxgmii-performance-errata; + #phy-cells = <0>; + }; + }; + +...