From mboxrd@z Thu Jan 1 00:00:00 1970 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: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain 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/ethernet/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 lan743x_adapter *adapter) if (adapter->is_pci11x1x && adapter->is_sgmii_en) adapter->phy_interface = PHY_INTERFACE_MODE_SGMII; + else if (adapter->is_pci11x1x && adapter->is_rmii_en) + adapter->phy_interface = PHY_INTERFACE_MODE_RMII; else if (id_rev == ID_REV_ID_LAN7430_) adapter->phy_interface = PHY_INTERFACE_MODE_GMII; else if ((id_rev == ID_REV_ID_LAN7431_) && (data & MAC_CR_MII_EN_)) @@ -3158,6 +3160,12 @@ static int lan743x_phylink_create(struct lan743x_adapter *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 = 0; + break; + default: phy_interface_set_rgmii(adapter->phylink_config.supported_interfaces); } @@ -3165,6 +3173,9 @@ static int lan743x_phylink_create(struct lan743x_adapter *adapter) memcpy(adapter->phylink_config.lpi_interfaces, adapter->phylink_config.supported_interfaces, sizeof(adapter->phylink_config.lpi_interfaces)); + if (adapter->phy_interface == PHY_INTERFACE_MODE_RMII) + __clear_bit(PHY_INTERFACE_MODE_RMII, + adapter->phylink_config.lpi_interfaces); pl = phylink_create(&adapter->phylink_config, NULL, adapter->phy_interface, &lan743x_phylink_mac_ops); @@ -3509,6 +3520,7 @@ static int lan743x_hardware_init(struct lan743x_adapter *adapter, { struct lan743x_tx *tx; u32 sgmii_ctl; + u32 rmii_ctl; int index; int ret; @@ -3530,6 +3542,11 @@ static int lan743x_hardware_init(struct lan743x_adapter *adapter, sgmii_ctl |= SGMII_CTL_SGMII_POWER_DN_; } lan743x_csr_write(adapter, SGMII_CTL, sgmii_ctl); + if (adapter->is_rmii_en) { + rmii_ctl = lan743x_csr_read(adapter, RMII_CTL); + rmii_ctl |= RMII_CTL_RMII_ENABLE_; + lan743x_csr_write(adapter, RMII_CTL, rmii_ctl); + } } else { adapter->max_tx_channels = LAN743X_MAX_TX_CHANNELS; adapter->used_tx_channels = LAN743X_USED_TX_CHANNELS; diff --git a/drivers/net/ethernet/microchip/lan743x_main.h b/drivers/net/ethernet/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) +#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) -- 2.34.1