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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6926DC05027 for ; Thu, 2 Feb 2023 12:59:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232512AbjBBM7V (ORCPT ); Thu, 2 Feb 2023 07:59:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59664 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232372AbjBBM7D (ORCPT ); Thu, 2 Feb 2023 07:59:03 -0500 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5FCD689FAC; Thu, 2 Feb 2023 04:59:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1675342741; x=1706878741; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=32H2oJWTk/bY+4r4IuXy3k5EXeQhNmioppl2l7N7A2E=; b=St3z3Em+sFB1Naes9cIk9mdM0mhZF1hfBRVP3q/xy+VbJ+VddBeYDacW PQibYf/GYKF2iAeXDuPaFac3Vs495+kyLmh2wy3U+wX4yxoqxHd6bDkU1 ujWQuIMZoGoMStOiNhAlllhz/IcQbRd5KzHCK39TR7z0Z7W9tu9X4MG2L mBlVN51k5TfT/ctOGKCv4V8rjUdI4Cq7IWFkbWhh1myzMN6OH6+qgnUts a4fXeJXdOeIRWNKH2V2ptQokPEfhcDoh6XZgM5opXGFU3zZOPhw086a3n sA5QO8aO0hGmOwIVbTQEvZcUbJx5Pm0qMmp1x++/Y7UCJWcfoJd3FpVIO g==; X-IronPort-AV: E=Sophos;i="5.97,267,1669100400"; d="scan'208";a="135251838" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa6.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 02 Feb 2023 05:59:00 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) 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 15.1.2507.16; Thu, 2 Feb 2023 05:59:00 -0700 Received: from che-lt-i67786lx.microchip.com (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.2507.16 via Frontend Transport; Thu, 2 Feb 2023 05:58:55 -0700 From: Rakesh Sankaranarayanan To: , CC: , , , , , , , , , Subject: [RFC PATCH net-next 06/11] net: dsa: microchip: lan937x: get cascade tag protocol Date: Thu, 2 Feb 2023 18:29:25 +0530 Message-ID: <20230202125930.271740-7-rakesh.sankaranarayanan@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230202125930.271740-1-rakesh.sankaranarayanan@microchip.com> References: <20230202125930.271740-1-rakesh.sankaranarayanan@microchip.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Update ksz_get_tag_protocol to return separate tag protocol if switch is connected in cascade mode. Variable ds->dst->last_switch will contain total number of switches registered. For cascaded connection alone, this will be more than zero. Signed-off-by: Rakesh Sankaranarayanan --- drivers/net/dsa/microchip/ksz_common.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c index adf8391dd29f..2160a3e61a5a 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -2567,9 +2567,13 @@ static enum dsa_tag_protocol ksz_get_tag_protocol(struct dsa_switch *ds, dev->chip_id == KSZ9567_CHIP_ID) proto = DSA_TAG_PROTO_KSZ9477; - if (is_lan937x(dev)) + if (is_lan937x(dev)) { proto = DSA_TAG_PROTO_LAN937X_VALUE; + if (ds->dst->last_switch) + proto = DSA_TAG_PROTO_LAN937X_CASCADE_VALUE; + } + return proto; } -- 2.34.1