From nobody Mon Feb 9 00:31:24 2026 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) (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 95CB39475; Sat, 8 Feb 2025 00:25:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.154.123 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738974343; cv=none; b=haY2CK7ClksuA5w30QCJRk+ZFIRXh2O0n2X8DjqRzPw4gXRxw42R/I0k1TIihxWtv1Yr6iIzC9/tBbTvfFj/1gGOMhSA/uOn5PjcLCSCTyYSYLZyc0xZ0TKDilaU/6wMk4E578bA9XXUbXsNcqVB7RQpHutNlw0rJN9OQUN+ceo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738974343; c=relaxed/simple; bh=KnnMJ5gA4MaTm4LyzoHVsG5QMMlcHjMBNuQdqkXXobo=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=d1ziimDCFgQuxOMwwKqwEjQleLSPZm20tD4PYQy4KoqTJRaVexldX6fWBQ5blBNtBw4rbHCNVjXjiNMk/9Qs0yIRukuFPWXBeKc1lEhHI95FfozlVCEozk7IlHIvCUzCRZHR7O64Ee/i0hSah65ycaYDQUycJr41roE83Oq/sjs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com; spf=pass smtp.mailfrom=microchip.com; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b=I060GgTz; arc=none smtp.client-ip=68.232.154.123 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=microchip.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="I060GgTz" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1738974341; x=1770510341; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=KnnMJ5gA4MaTm4LyzoHVsG5QMMlcHjMBNuQdqkXXobo=; b=I060GgTzvlqAVJHJxAG+O6oWbCwP40CNfHN/7YnFG4WoljB2rMaw5y1V KxxdcHzE8YmqzyHEK/Okzk6ICtUmfITnAMmBQjVdf5bWjDB7qqllnywfz MUOozQMH1siskGYqQ2ug1Rg4NHOy3vC00PPGyGweMhCWJpUdWk79OUudF 888aZeLANw9r+r9nfZPgic9R937v18U9CxF3PzXQlA1y4pYQSR5VVYMMg WspaeQJ8Wzfc4ktX+HLaR5A7n8rusImeL+B5bwLto3wNNTWAZxNgoJCMi 7VKRPfpQj8mLa3P9Rf7LEMl4NEd3V2GcAMIt1Fs10GkwLmJ8sGu1KHMFS w==; X-CSE-ConnectionGUID: gjF3bHhWQjawgqi63hdssw== X-CSE-MsgGUID: cfMPCns0SHaIaVWTYroJtw== X-IronPort-AV: E=Sophos;i="6.13,268,1732604400"; d="scan'208";a="37033620" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa4.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 07 Feb 2025 17:25:33 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Fri, 7 Feb 2025 17:24:18 -0700 Received: from pop-os.microchip.com (10.10.85.11) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.35 via Frontend Transport; Fri, 7 Feb 2025 17:24:18 -0700 From: To: Russell King , Woojung Huh , Andrew Lunn , Vladimir Oltean , Heiner Kallweit , "Maxime Chevallier" CC: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , , , , Tristram Ha Subject: [PATCH RFC net-next v3 1/2] net: pcs: xpcs: Activate DW_XPCS_SGMII_MODE_MAC_MANUAL for KSZ9477 Date: Fri, 7 Feb 2025 16:24:16 -0800 Message-ID: <20250208002417.58634-2-Tristram.Ha@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250208002417.58634-1-Tristram.Ha@microchip.com> References: <20250208002417.58634-1-Tristram.Ha@microchip.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Tristram Ha Microchip KSZ9477 SGMII uses old XPCS IP and requires special code to operate correctly. A special value from PMA device ids will be used to activate DW_XPCS_SGMII_MODE_MAC_MANUL. Signed-off-by: Tristram Ha --- drivers/net/pcs/pcs-xpcs.c | 2 ++ include/linux/pcs/pcs-xpcs.h | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/net/pcs/pcs-xpcs.c b/drivers/net/pcs/pcs-xpcs.c index d522e4a5a138..5aad67ff4a4f 100644 --- a/drivers/net/pcs/pcs-xpcs.c +++ b/drivers/net/pcs/pcs-xpcs.c @@ -1482,6 +1482,8 @@ static struct dw_xpcs *xpcs_create(struct mdio_device= *mdiodev) xpcs->sgmii_10_100_8bit =3D DW_XPCS_SGMII_10_100_8BIT; xpcs->sgmii_mode =3D DW_XPCS_SGMII_MODE_PHY_HW; } else { + if (xpcs->info.pma =3D=3D MICROCHIP_KSZ9477_PMA_ID) + xpcs->sgmii_mode =3D DW_XPCS_SGMII_MODE_MAC_MANUAL; xpcs->need_reset =3D true; } =20 diff --git a/include/linux/pcs/pcs-xpcs.h b/include/linux/pcs/pcs-xpcs.h index 733f4ddd2ef1..637d5356a961 100644 --- a/include/linux/pcs/pcs-xpcs.h +++ b/include/linux/pcs/pcs-xpcs.h @@ -39,6 +39,7 @@ enum dw_xpcs_pma_id { DW_XPCS_PMA_GEN5_10G_ID, DW_XPCS_PMA_GEN5_12G_ID, WX_TXGBE_XPCS_PMA_10G_ID =3D 0x0018fc80, + MICROCHIP_KSZ9477_PMA_ID =3D 0x00229477, }; =20 struct dw_xpcs_info { --=20 2.34.1