From nobody Mon Jun 8 20:41:28 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 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: 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" 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/et= hernet/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_adap= ter *adapter) u32 strap; int ret; =20 + adapter->is_rmii_en =3D false; /* Timeout =3D 100 (i.e. 1 sec (10 msce * 100)) */ ret =3D lan743x_hs_syslock_acquire(adapter, 100); if (ret < 0) { @@ -73,6 +74,12 @@ static void pci11x1x_strap_get_status(struct lan743x_ada= pter *adapter) adapter->is_sgmii_en =3D false; } } + + if (!adapter->is_sgmii_en && strap & STRAP_READ_USE_RMII_EN_) { + if (strap & STRAP_READ_RMII_EN_) + adapter->is_rmii_en =3D 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/et= hernet/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) =20 #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; --=20 2.34.1 From nobody Mon Jun 8 20:41:28 2026 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) (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 BC4AD379C43; Tue, 26 May 2026 15:41:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.153.233 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779810079; cv=none; b=rqomSb/w605HdxzZM3zIxAtROdEEtVuXHAkmTP2BtovvXrDZpPOWFvl2iIQoMItcgD8EHdMtQpYZOoj0h8xhsNg5ByKVsv34Lh5GZ9ibWpeJd0DpSIVOw/XBW5Iq6W+1Nt1AG6BDMrQRa15VeWuF2dLXS/KGVU0qwgEmNZKBWb8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779810079; c=relaxed/simple; bh=3eB6hczFYD1A3QQ1pLigtGb7sPnugklkEZyNYhVpi80=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=TTzJrJ6GrpCti2PCY44BXMalpBPXUNH3vPnVDAY1cSEob4y4UZXFa4cCvzgFaIb70Pq42WmSN+5/b96d+fk/s+Jjdn82ojybaKtdgNnwcPnoOv9PUMyaCcQqjZ+hTrRx4loq5DG9Z516WRopM18JGXOiZUnVuQT4Bm43evrQkLk= 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=ImQlu9eJ; arc=none smtp.client-ip=68.232.153.233 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="ImQlu9eJ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1779810078; x=1811346078; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=3eB6hczFYD1A3QQ1pLigtGb7sPnugklkEZyNYhVpi80=; b=ImQlu9eJTA9ZovckT+hjqxZlo6V/kSLI32B3aCAYIOs++gP6Pftuupg3 ZU02F9/xcMXAHVzhmHEJzzusvjpoLHWxid67DH/qtE7x6X2ylshozzOrC vAxG2NmBLJysoRHpviS+PhjibsFmlefxGneLDGP7+81QdOoNh6s/Fniog ojuZom7+bTkk/EPc7zqdXFg7OhYS4nD+51K0S/0w8v9rDpMmwvj76SiSv 6hdTyMqbwO+iW+kfBQbC/O67Z6Mo+X/nZoYbdrx1S7moYR7hKEJ6Ok1T0 fm0Th5HPyW8q54FMseUs7YC7ZEKYPR1O9EqbkqxwuzXkrg4t/ejvafuN3 g==; X-CSE-ConnectionGUID: tQHgQ9pLQCSykivtdByheQ== X-CSE-MsgGUID: ShhT03BBTGSpCfgnrLYAKg== X-IronPort-AV: E=Sophos;i="6.24,170,1774335600"; d="scan'208";a="289457183" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa5.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 May 2026 08:41:11 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.87.151) by chn-vm-ex3.mchp-main.com (10.10.87.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.2562.41; Tue, 26 May 2026 08:41:10 -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 08:41:07 -0700 From: Thangaraj Samynathan To: CC: , , , , , , , Subject: [PATCH net-next v2 2/2] net: lan743x: add support for RMII interface Date: Tue, 26 May 2026 21:10:54 +0530 Message-ID: <20260526154054.19829-3-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: 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" Enable RMII interface in the lan743x driver for PHY and MAC configuration. - Select RMII interface in lan743x_phy_interface_select(). - Update phylink supported_interfaces and MAC capabilities. - Enable RMII via RMII_CTL in lan743x_hardware_init(). - Define RMII_CTL register and enable bit in lan743x_main.h. Signed-off-by: Thangaraj Samynathan --- drivers/net/ethernet/microchip/lan743x_main.c | 17 +++++++++++++++++ drivers/net/ethernet/microchip/lan743x_main.h | 3 +++ 2 files changed, 20 insertions(+) diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/et= hernet/microchip/lan743x_main.c index 7d6ffaf13b5e..1c0484c4705d 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.c +++ b/drivers/net/ethernet/microchip/lan743x_main.c @@ -1370,6 +1370,8 @@ static void lan743x_phy_interface_select(struct lan74= 3x_adapter *adapter) =20 if (adapter->is_pci11x1x && adapter->is_sgmii_en) adapter->phy_interface =3D PHY_INTERFACE_MODE_SGMII; + else if (adapter->is_pci11x1x && adapter->is_rmii_en) + adapter->phy_interface =3D PHY_INTERFACE_MODE_RMII; else if (id_rev =3D=3D ID_REV_ID_LAN7430_) adapter->phy_interface =3D PHY_INTERFACE_MODE_GMII; else if ((id_rev =3D=3D ID_REV_ID_LAN7431_) && (data & MAC_CR_MII_EN_)) @@ -3158,6 +3160,12 @@ static int lan743x_phylink_create(struct lan743x_ada= pter *adapter) __set_bit(PHY_INTERFACE_MODE_MII, adapter->phylink_config.supported_interfaces); break; + case PHY_INTERFACE_MODE_RMII: + __set_bit(PHY_INTERFACE_MODE_RMII, + adapter->phylink_config.supported_interfaces); + adapter->phylink_config.lpi_capabilities =3D 0; + break; + default: phy_interface_set_rgmii(adapter->phylink_config.supported_interfaces); } @@ -3165,6 +3173,9 @@ static int lan743x_phylink_create(struct lan743x_adap= ter *adapter) memcpy(adapter->phylink_config.lpi_interfaces, adapter->phylink_config.supported_interfaces, sizeof(adapter->phylink_config.lpi_interfaces)); + if (adapter->phy_interface =3D=3D PHY_INTERFACE_MODE_RMII) + __clear_bit(PHY_INTERFACE_MODE_RMII, + adapter->phylink_config.lpi_interfaces); =20 pl =3D phylink_create(&adapter->phylink_config, NULL, adapter->phy_interface, &lan743x_phylink_mac_ops); @@ -3509,6 +3520,7 @@ static int lan743x_hardware_init(struct lan743x_adapt= er *adapter, { struct lan743x_tx *tx; u32 sgmii_ctl; + u32 rmii_ctl; int index; int ret; =20 @@ -3530,6 +3542,11 @@ static int lan743x_hardware_init(struct lan743x_adap= ter *adapter, sgmii_ctl |=3D SGMII_CTL_SGMII_POWER_DN_; } lan743x_csr_write(adapter, SGMII_CTL, sgmii_ctl); + if (adapter->is_rmii_en) { + rmii_ctl =3D lan743x_csr_read(adapter, RMII_CTL); + rmii_ctl |=3D RMII_CTL_RMII_ENABLE_; + lan743x_csr_write(adapter, RMII_CTL, rmii_ctl); + } } else { adapter->max_tx_channels =3D LAN743X_MAX_TX_CHANNELS; adapter->used_tx_channels =3D LAN743X_USED_TX_CHANNELS; diff --git a/drivers/net/ethernet/microchip/lan743x_main.h b/drivers/net/et= hernet/microchip/lan743x_main.h index 1d7d37456553..03f3727ed8f7 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.h +++ b/drivers/net/ethernet/microchip/lan743x_main.h @@ -324,6 +324,9 @@ #define MAC_WUCSR2_IPV6_TCPSYN_RCD_ BIT(5) #define MAC_WUCSR2_IPV4_TCPSYN_RCD_ BIT(4) =20 +#define RMII_CTL (0x710) +#define RMII_CTL_RMII_ENABLE_ BIT(0) + #define SGMII_ACC (0x720) #define SGMII_ACC_SGMII_BZY_ BIT(31) #define SGMII_ACC_SGMII_WR_ BIT(30) --=20 2.34.1