From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B563A1DFD86 for ; Wed, 25 Jun 2025 07:15:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750835718; cv=none; b=UhvYYh2Q6VVQc7aIqhr8c7zduFFqklkUffgUtbXkSPYzxcI2xUrs962FgVU6/0/ni+d4tXvBf9CKNugZKVVFx8HjOiUq2MfdNxlaFgUaEYO0g5mzNWQC9NwT1d33llmSxlOdfb9VDK23YTuE+kvG3170fqqSXP00wW6lZ0g7en8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750835718; c=relaxed/simple; bh=ItKmWAaJwab1Hl9wblEeNA0MrtVTZQ4x6JRAb/bem4k=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=lflFt62HuEbssHbkHye4I70HqCA/JbY0zLj4y8lQphosUWn1QtzoCuVh8izTd3K5YbGcbzlPExjVGKiN+SxHB0blB+lm1ktgQKTiqgE+77MWQLT/2ipHomsapmwTBvaQlQVrXAFDypXHza9fpMP66r2MCaEA4IMrxj9xRonZwS8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=oEFw5tJO; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="oEFw5tJO" Received: by mail.gandi.net (Postfix) with ESMTPSA id B3CF4443E6; Wed, 25 Jun 2025 07:15:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1750835708; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ItKmWAaJwab1Hl9wblEeNA0MrtVTZQ4x6JRAb/bem4k=; b=oEFw5tJOBUADcbTH2ta6ZGRqd6eq7iixUXAgCAW9MvEn1QzI2dDXskHcUuxKdMJAA0Xf7Y pIIvqGSfo1kAtXM8/1tfzhlxOTqh1L1pZC2eOVlizp1yRUa06yWaOKicEqL45OhKpCHAr7 HIC7fMPbT7trt8Ibk9Zien/aeddNmihaJJIXoBoM68mn0aP1KAxSLsV4tldzzQE8Bojw+U VwEFNaz/NHjGIE6n8V15ZPvr19yh8EaVLllT5X8OcYqn/rZco9U41LKJcDejGQQvoabLsX cSS2oN5TqrvKlRhvd9BegbDWCnI9SZ9HiBcZnv4oPdALCgfr4VdC1oAXvh/1EA== Date: Wed, 25 Jun 2025 09:15:06 +0200 From: Maxime Chevallier To: Florian Fainelli Cc: netdev@vger.kernel.org, Andrew Lunn , "Russell King (Oracle)" , Vladimir Oltean , Marek =?UTF-8?B?QmVow7pu?= , Robert Hancock , Tao Ren Subject: Re: Supporting SGMII to 100BaseFX SFP modules, with broadcom PHYs Message-ID: <20250625091506.051a8723@fedora.home> In-Reply-To: <24146e10-5e9c-42f5-9bbe-fe69ddb01d95@broadcom.com> References: <20250624233922.45089b95@fedora.home> <24146e10-5e9c-42f5-9bbe-fe69ddb01d95@broadcom.com> Organization: Bootlin X-Mailer: Claws Mail 4.3.1 (GTK 3.24.43; x86_64-redhat-linux-gnu) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtddvgddvvddugecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfitefpfffkpdcuggftfghnshhusghstghrihgsvgenuceurghilhhouhhtmecufedtudenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhepfffhvfevuffkjghfohfogggtgfesthhqredtredtjeenucfhrhhomhepofgrgihimhgvucevhhgvvhgrlhhlihgvrhcuoehmrgigihhmvgdrtghhvghvrghllhhivghrsegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpeeuhfefgffgtdfhgffhvdfhhffhteeutdektefghfetveehheejjefgudeiudehudenucfkphepvdgrtddumegtsgduleemkegugeehmeegledttdemieehieekmedvlegsudemlegvfhehmegvkegtjeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpedvrgdtudemtggsudelmeekugegheemgeeltddtmeeiheeikeemvdelsgdumeelvghfheemvgektgejpdhhvghlohepfhgvughorhgrrdhhohhmvgdpmhgrihhlfhhrohhmpehmrgigihhmvgdrtghhvghvrghllhhivghrsegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopeekpdhrtghpthhtohepfhhlohhrihgrnhdrfhgrihhnvghllhhisegsrhhorggutghomhdrtghomhdprhgtphhtthhopehnvghtuggvvhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegrnhgurhgvfieslhhun hhnrdgthhdprhgtphhtthhopehlihhnuhigsegrrhhmlhhinhhugidrohhrghdruhhkpdhrtghpthhtohepvhhlrgguihhmihhrrdholhhtvggrnhesnhigphdrtghomhdprhgtphhtthhopehkrggsvghlsehkvghrnhgvlhdrohhrghdprhgtphhtthhopehrohgsvghrthdrhhgrnhgtohgtkhestggrlhhirghnrdgtohhmpdhrtghpthhtoheprhgvnhhtrghordgsuhhpthesghhmrghilhdrtghomh X-GND-Sasl: maxime.chevallier@bootlin.com Hi again Florian, On Tue, 24 Jun 2025 15:29:25 -0700 Florian Fainelli wrote: > For 100BaseFX, the signal detection is configured in bit 5 of the shadow= =20 > 0b01100 in the 0x1C register. You can use bcm_{read,write}_shadow() for=20 > that: >=20 > 0 to use EN_10B/SD as CMOS/TTL signal detect (default) > 1 to use SD_100FX=C2=B1 as PECL signal detect >=20 > You can use either copper or SGMII interface for 100BaseFX and that will= =20 > be configured this way: >=20 > - in register 0x1C, shadow 0b10 (1000Base-T/100Base-TX/10Base-T Spare=20 > Control 1), set bit 4 to 1 to enable 100BaseFX >=20 > - disable auto-negotiation with register 0x00 =3D 0x2100 >=20 > - set register 0x18 to 0x430 (bit 10 -> normal mode, bits 5:4 control=20 > the edge rate. 0b00 -> 4ns, 0b01 -> 5ns, 0b10 -> 3ns, 0b11 -> 0ns. This=20 > is the auxiliary control register (MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL). And I have my first ping going through :) Thank you so much, if I get a chance to meet you in person one day, drinks are on me :) Thanks again, Maxime