From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 314A6C63777 for ; Sun, 15 Nov 2020 13:59:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E70B32344C for ; Sun, 15 Nov 2020 13:59:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="QvNjKjre" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727174AbgKON7h (ORCPT ); Sun, 15 Nov 2020 08:59:37 -0500 Received: from mail.kernel.org ([198.145.29.99]:40660 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726743AbgKON7h (ORCPT ); Sun, 15 Nov 2020 08:59:37 -0500 Received: from dellmb.labs.office.nic.cz (nat-1.nic.cz [217.31.205.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9ADD52344C; Sun, 15 Nov 2020 13:59:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1605448776; bh=we+yyfWYBsb/xAQlgmkzu6Pex8YwPIxVvTjuJiK+Cxk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QvNjKjrezF0D7+LBGnPnx2gtV5HOcM67f1xKlRsxQ5U2D2qgBZXaYWUVS6sR0uDi2 7wb2Jy+khGh24i4dd5eQUZm8rnoipwpSahrQ+8nsl3u0bza7IshybEDRmUgqSPrv1M SskyNyve0UZkUnKx+Ocf2P2IuzlrfBxwDKuD02js= From: =?UTF-8?q?Marek=20Beh=C3=BAn?= To: Gregory CLEMENT Cc: arm@kernel.org, =?UTF-8?q?Marek=20Beh=C3=BAn?= , Andrew Lunn , Russell King - ARM Linux admin , linux-arm-kernel@lists.infradead.org, =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Jason Cooper , =?UTF-8?q?Andreas=20F=C3=A4rber?= , Rob Herring , devicetree@vger.kernel.org Subject: [PATCH mvebu-dt v3 4/7] ARM: dts: turris-omnia: add SFP node Date: Sun, 15 Nov 2020 14:59:20 +0100 Message-Id: <20201115135923.11523-5-kabel@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201115135923.11523-1-kabel@kernel.org> References: <20201115135923.11523-1-kabel@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Turris Omnia has an SFP cage that, together with WAN PHY, is connected to eth2 SerDes via a SerDes multiplexor. When a SFP module is present, the multiplexor switches the SerDes signal from PHY to SFP. Describe the SFP cage, but leave it disabled. Until phylink has support for such configuration, we are leaving it to U-Boot to enable SFP and disable WAN PHY at boot time depending on whether a SFP module is present. Signed-off-by: Marek Behún Fixes: 26ca8b52d6e1 ("ARM: dts: add support for Turris Omnia") Reviewed-by: Andrew Lunn Cc: Russell King - ARM Linux admin Cc: linux-arm-kernel@lists.infradead.org Cc: Uwe Kleine-König Cc: Jason Cooper Cc: Gregory CLEMENT Cc: Andreas Färber Cc: Rob Herring Cc: devicetree@vger.kernel.org --- arch/arm/boot/dts/armada-385-turris-omnia.dts | 29 ++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/armada-385-turris-omnia.dts b/arch/arm/boot/dts/armada-385-turris-omnia.dts index 7ccebf7d1757..f7498543c9ad 100644 --- a/arch/arm/boot/dts/armada-385-turris-omnia.dts +++ b/arch/arm/boot/dts/armada-385-turris-omnia.dts @@ -82,6 +82,23 @@ pcie@3,0 { }; }; }; + + sfp: sfp { + compatible = "sff,sfp"; + i2c-bus = <&sfp_i2c>; + tx-fault-gpios = <&pcawan 0 GPIO_ACTIVE_HIGH>; + tx-disable-gpios = <&pcawan 1 GPIO_ACTIVE_HIGH>; + rate-select0-gpios = <&pcawan 2 GPIO_ACTIVE_HIGH>; + los-gpios = <&pcawan 3 GPIO_ACTIVE_HIGH>; + mod-def0-gpios = <&pcawan 4 GPIO_ACTIVE_LOW>; + + /* + * For now this has to be enabled at boot time by U-Boot when + * a SFP module is present. Read more in the comment in the + * eth2 node below. + */ + status = "disabled"; + }; }; &bm { @@ -126,10 +143,20 @@ fixed-link { /* WAN port */ ð2 { + /* + * eth2 is connected via a multiplexor to both the SFP cage and to + * ethernet-phy@1. The multiplexor switches the signal to SFP cage when + * a SFP module is present, as determined by the mode-def0 GPIO. + * + * Until kernel supports this configuration properly, in case SFP module + * is present, U-Boot has to enable the sfp node above, remove phy + * handle and add managed = "in-band-status" property. + */ status = "okay"; phy-mode = "sgmii"; phy = <&phy1>; phys = <&comphy5 2>; + sfp = <&sfp>; buffer-manager = <&bm>; bm,pool-long = <2>; bm,pool-short = <3>; @@ -195,7 +222,7 @@ i2c@3 { /* routed to PCIe2 connector (CN62A) */ }; - i2c@4 { + sfp_i2c: i2c@4 { #address-cells = <1>; #size-cells = <0>; reg = <4>; -- 2.26.2