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 9C2D8377EDF; Tue, 26 May 2026 15:41:11 +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=1779810073; cv=none; b=q4rqf/PSg1toIxYSaFvUCkwOCr4K16zgS7yy7z+91cFiagAJkqoWtjQoCd7qif+UEJd7+0+KwOvBq0zRjLfWw9JdtvJ91bHWxav+XDCMR2/nHdB5tWJH+RU0lTSuIe4b3HewYpd5ANiv0tYs7l9HpnJ8liQfhFqvPDeZPljnzBQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779810073; c=relaxed/simple; bh=u5JTNPjt/nv/5O1/PPBBPqQ34DiJhU+KwdmR4fuGbsI=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=SiacZV9IPOt7zaMI50mRHsAY6qToL1kHU/emDMbzrgdRsvExArNgcPi/mT3h4bLvJbsgNC5NAId9y5o6a+Sw7mM8bnm1H9qrdvhLq4GhkhcFPZ7pBp+cZCSUJeLkCYNWB4Di9FQlug4AWf4NC9qJWn3fJc8sIxUzOWPzfbyCJZ0= 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=O+05WKtW; 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="O+05WKtW" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1779810071; x=1811346071; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=u5JTNPjt/nv/5O1/PPBBPqQ34DiJhU+KwdmR4fuGbsI=; b=O+05WKtWvn5OpyTDJA97yr6MBpDcz+Y9L5hNWxWCP4XfrdWSI8o4u/e9 u7GRrP+qaHVLmpmRT/gX/DIIMPWLHSHkBx/94xpOBjR5lZzw3BWDdcr9Y XmW4UH9u5C9aESf6cJ6AlIyLL2KQMK8F0VtZxoq3cw1mXBccQfrH+nZVy 5HBsOdKao43wBRRuNYGnkBN8vYBFkSzPg/QJJn1VbGkdepGIyVJKLXoj/ M8ra3jubiJeMQYoQFJffxxGB6QwSTuCn42XLgpp4zdFMuo+8R1/I9k9iq lMAe5F7mvJC543pJgZHfe2d/cdF/E5MPRj5rFgQIhcUkGPdG4hx8vZsHe g==; X-CSE-ConnectionGUID: rsQBhLVbTfish/5CzWaMiw== X-CSE-MsgGUID: /2TC3ES/RyKwuIZPSOE3Ig== X-IronPort-AV: E=Sophos;i="6.24,170,1774335600"; d="scan'208";a="58485901" 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-AES128-GCM-SHA256; 26 May 2026 08:41:05 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.58; Tue, 26 May 2026 08:41:05 -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; Tue, 26 May 2026 08:41:02 -0700 From: Thangaraj Samynathan To: CC: , , , , , , , Subject: [PATCH net-next v2 1/2] net: lan743x: add RMII strap status detection for PCI11x1x Date: Tue, 26 May 2026 21:10:53 +0530 Message-ID: <20260526154054.19829-2-thangaraj.s@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260526154054.19829-1-thangaraj.s@microchip.com> References: <20260526154054.19829-1-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. Signed-off-by: Thangaraj Samynathan --- drivers/net/ethernet/microchip/lan743x_main.c | 7 +++++++ drivers/net/ethernet/microchip/lan743x_main.h | 3 +++ 2 files changed, 10 insertions(+) diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c index f3332417162e..7d6ffaf13b5e 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) { @@ -73,6 +74,12 @@ static void pci11x1x_strap_get_status(struct lan743x_adapter *adapter) adapter->is_sgmii_en = false; } } + + 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, "SGMII I/F %sable\n", adapter->is_sgmii_en ? "En" : "Dis"); } diff --git a/drivers/net/ethernet/microchip/lan743x_main.h b/drivers/net/ethernet/microchip/lan743x_main.h index 160d94a7cee6..1d7d37456553 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) @@ -1071,6 +1073,7 @@ 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