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 DC3FE2C032E; Fri, 27 Mar 2026 05:41:11 +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=1774590073; cv=none; b=UFE9tebbtSNgzMjxwcBEKaYxRRf+ZROt7P+aLEM1sOsZ+8u3NQGG/7io9lXz3RMxTBWfih92FsHPQcDJXbdsJNjZ3Wuoo6E79FEPP7iVaeS7+HbTlSX3XqA0gG31lq8uQJNtlSnzoElhc8RLKPYm3WxjTEICmGpbhXzH4RaRtcY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774590073; c=relaxed/simple; bh=ZHZxoddQJjzcgvbwtL6scun+BXya5huaDuqGKWA6YR8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=bxYqsxJ85800mH5JbLKZ82Bb8FNztV59XzGcgVRIxk9GIIuQJuVdbf10M27pLhmRpOo88SE+bL1uUPWAsb4adurKxy3sSdhBYNsFDKPuV5ZYBOL5pfJZLyGwv4pihV5fnwwMaWoNuhTe2VNvafySFxi4Jaq/JzIG4QyPN0aLDKA= 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=vkap9/eu; 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="vkap9/eu" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1774590071; x=1806126071; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ZHZxoddQJjzcgvbwtL6scun+BXya5huaDuqGKWA6YR8=; b=vkap9/euxHWYCIO1jyV5LOIBPB6dplII1E48DKbSX+tCH69IBoIHgP6c TKiUA6r0IDqmDUb+DLDrkOpYOdD2Iqub+yC+HcOVGiq8hDOK2Nh/I/TOr C/42H0LTDKzGTFHY+A/ZGAeD6HgTOABc9Ku5UyIB9nq+PHEd2xhHUQRwQ CLmZCvkK+SKcThD0EJae8DMsEymGLhwoigJ17ySbT+SvY7n1QbW45mE0f zaUEUrO5mRuNjnAJ26kNCg71f+JLDC0D+YYEzBuDX/CCpYAjHCW5Ql2Ua aJhXHu6FpBaUnIU4mjrA6hwgyamooZ9by5GhZ/q1LYPK2pwr/osZkXlWc A==; X-CSE-ConnectionGUID: gjosScOBTwOVchRgA2ENAw== X-CSE-MsgGUID: 1vzhvfyvS+arE+EvchGOFw== X-IronPort-AV: E=Sophos;i="6.23,143,1770620400"; d="scan'208";a="54548843" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa4.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 26 Mar 2026 22:41:10 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.58; Thu, 26 Mar 2026 22:40:41 -0700 Received: from che-ld-unglab06.microchip.com (10.10.85.11) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.2507.58 via Frontend Transport; Thu, 26 Mar 2026 22:40:37 -0700 From: Thangaraj Samynathan To: , , , , , , , , , CC: , Subject: [PATCH net-next 2/2] net: lan743x: add support for RMII interface Date: Fri, 27 Mar 2026 11:10:08 +0530 Message-ID: <20260327054008.79294-3-thangaraj.s@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260327054008.79294-1-thangaraj.s@microchip.com> References: <20260327054008.79294-1-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 | 18 ++++++++++++++++++ drivers/net/ethernet/microchip/lan743x_main.h | 3 +++ 2 files changed, 21 insertions(+) diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c index b7b1584d867d..86d35810460f 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 +3160,13 @@ 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.mac_capabilities &= ~MAC_1000FD; + adapter->phylink_config.lpi_capabilities = 0; + break; + default: phy_interface_set_rgmii(adapter->phylink_config.supported_interfaces); } @@ -3165,6 +3174,9 @@ 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 +3521,7 @@ 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 +3543,11 @@ 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