From mboxrd@z Thu Jan 1 00:00:00 1970 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 DE06D422548; Mon, 6 Jul 2026 09:33:58 +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=1783330443; cv=none; b=bhOwsWx3aKRznb7Ul90A+yWoJUZ9n+ZcafskTI6PR9hNlMZb/KJzR487KU781S3fBdO/O/5rakO1FTviXCov5hkWCxJmS1VgahTLX73GYefbliAcCk9wDR+0zo41UgvhtyUJ4whPn6PveDQgI8FiNE+aKi4kDUleTsnyOvnio6w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783330443; c=relaxed/simple; bh=1JL2JcRPykcNOXZTIj7DSdSZdXzQeo47vikrlB/NC40=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=SUgD1agprPu7i6wceoxja+AbqmDIr2VfHm6b3Buk3XBamvhbtNutTG0B4bgiq65U/HbvHBgx12UXCL/k6Sc+01dx5bj8jtH961KNHDLJll3g/plQSY5t6yWjirG7C0NQpFqaYy8Qig2c/hO62OeScoUYLhUx0izxht7frfHNLpY= 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=N+inEnI+; 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="N+inEnI+" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1783330439; x=1814866439; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=1JL2JcRPykcNOXZTIj7DSdSZdXzQeo47vikrlB/NC40=; b=N+inEnI+PX1842HbuFOn5Vq2O+neCXZFFjMn+7orTtZ3SFb8t6hi1uOa kW63W2zf2H56MI8ShkQeLSyy0c15ZODP2Er1Cc+ITkRmORJ06ZLPXNJmf 5LxQxuOYlk5VT6b3nbaIlsDYakTEaMMoPMYFXkx5JvnVtHOG5xK/izw91 jPFmH5R4tllKbvaHMyNrEGVzOPQ0CEdvbyseIg+nNM5lGH8GDX0v6F2cy FicdFDc0kBNFq6mvJsNIFlw+JC1vbu+7CuKkZcV4xik9LzvSIo8Sr+t+P iI+sNkcQgI0BzMEe2zbgnVv9mzrNU3RR/gEeDmbLNmAkGtGdalJp4FRN0 A==; X-CSE-ConnectionGUID: srxHzna7TxyI0LjVtT+l4Q== X-CSE-MsgGUID: bmiwaOOeR2mncEczngPfzg== X-IronPort-AV: E=Sophos;i="6.25,149,1779174000"; d="scan'208";a="60494878" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2026 02:32:53 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.87.151) by chn-vm-ex2.mchp-main.com (10.10.87.31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.2562.43; Mon, 6 Jul 2026 02:32:53 -0700 Received: from che-ld-unglab06.microchip.com (10.10.85.11) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.58 via Frontend Transport; Mon, 6 Jul 2026 02:32:49 -0700 From: Thangaraj Samynathan To: CC: , , , , , , , , Subject: [PATCH net-next v5 1/2] net: lan743x: add RMII strap status detection for PCI11x1x Date: Mon, 6 Jul 2026 15:01:49 +0530 Message-ID: <20260706093150.9033-2-thangaraj.s@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260706093150.9033-1-thangaraj.s@microchip.com> References: <20260706093150.9033-1-thangaraj.s@microchip.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Extend pci11x1x_strap_get_status() to read the RMII strap bits from the STRAP_READ register. The is_rmii_en flag is initialized to false and updated based on the hardware strap only if SGMII is not already enabled. This ensures correct interface identification during adapter initialization. Update the netif_dbg() to report the selected interface as SGMII, RMII, or RGMII. Signed-off-by: Thangaraj Samynathan --- drivers/net/ethernet/microchip/lan743x_main.c | 12 ++++++++++-- drivers/net/ethernet/microchip/lan743x_main.h | 3 +++ 2 files changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c index e759171bfd76..3a418105cd11 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.c +++ b/drivers/net/ethernet/microchip/lan743x_main.c @@ -42,6 +42,7 @@ static void pci11x1x_strap_get_status(struct lan743x_adapter *adapter) u32 strap; int ret; + adapter->is_rmii_en = false; /* Timeout = 100 (i.e. 1 sec (10 msce * 100)) */ ret = lan743x_hs_syslock_acquire(adapter, 100); if (ret < 0) { @@ -73,8 +74,15 @@ static void pci11x1x_strap_get_status(struct lan743x_adapter *adapter) adapter->is_sgmii_en = false; } } - netif_dbg(adapter, drv, adapter->netdev, - "SGMII I/F %sable\n", adapter->is_sgmii_en ? "En" : "Dis"); + + if (!adapter->is_sgmii_en && strap & STRAP_READ_USE_RMII_EN_) { + if (strap & STRAP_READ_RMII_EN_) + adapter->is_rmii_en = true; + } + + netif_dbg(adapter, drv, adapter->netdev, "Selected I/F: %s\n", + adapter->is_sgmii_en ? "SGMII" : + adapter->is_rmii_en ? "RMII" : "RGMII"); } static bool is_pci11x1x_chip(struct lan743x_adapter *adapter) diff --git a/drivers/net/ethernet/microchip/lan743x_main.h b/drivers/net/ethernet/microchip/lan743x_main.h index 1573c8f9c993..1f8d9294a6ef 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.h +++ b/drivers/net/ethernet/microchip/lan743x_main.h @@ -36,7 +36,9 @@ #define FPGA_SGMII_OP BIT(24) #define STRAP_READ (0x0C) +#define STRAP_READ_USE_RMII_EN_ BIT(23) #define STRAP_READ_USE_SGMII_EN_ BIT(22) +#define STRAP_READ_RMII_EN_ BIT(7) #define STRAP_READ_SGMII_EN_ BIT(6) #define STRAP_READ_SGMII_REFCLK_ BIT(5) #define STRAP_READ_SGMII_2_5G_ BIT(4) @@ -1072,6 +1074,7 @@ struct lan743x_adapter { struct lan743x_rx rx[LAN743X_USED_RX_CHANNELS]; bool is_pci11x1x; bool is_sgmii_en; + bool is_rmii_en; /* protect ethernet syslock */ spinlock_t eth_syslock_spinlock; bool eth_syslock_en; -- 2.34.1