From patchwork Tue Apr 4 06:14:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Siddharth Vadapalli X-Patchwork-Id: 13199169 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7EF9EC77B6C for ; Tue, 4 Apr 2023 06:16:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=N5bmFwLbRUI4JSGHBTv7OzUpr0wYSPUfsbk67Lzt1aA=; b=Ruhko30ng18yfF ljUQolMpmiyKhfrlc378uoHvPtzRgx0AaWCKj2iwXSq/Rn0VEISOeqmJ1zoyaiRWCLZhRom/7YKXo 7E+Lklks3KlCqbHayz0MBoVEDepclLmkARskvhs7AS3qB4t/G62k/lX80fbftn+fuuCrCDyu4NN/I fHb0KLoG3fxYS83AuqpDGdxa8FOGjOfA+wsSn9V3aOA8FOF2fVTx8fPQB3UnqmE3gC9zgLXXVxO0I zY/EI426T7bRQyYFu8DjY6ZUcMQPOa4boUh87/K+vuc8HIknzbi78irSUqAhulNSjgYXkuc7A2BXz vSX7l1WQ5L3hXL+0VdXw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pjZwx-000AkR-0e; Tue, 04 Apr 2023 06:15:23 +0000 Received: from lelv0142.ext.ti.com ([198.47.23.249]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pjZwu-000Aha-28 for linux-arm-kernel@lists.infradead.org; Tue, 04 Apr 2023 06:15:22 +0000 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 3346F6cH011935; Tue, 4 Apr 2023 01:15:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1680588907; bh=oiYnpf0FJyd0FMoc+imR4JcVlxxtPshVC23LbW5qrpM=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=M1PufJHXFpPHOJDJi20d8+oxzLkuNm9VIqFjDqbBcTfNI1UOrzIbQcIvPo2m1Rb0K DG5b7Z8yMU71TZ2YPeu1JOI2LAugJeZkyI46tLDHZ1AG8Xjtk0+lE5Ul41z3GKtA43 zpel0EBEdoErJFo9kqoaP8k7QDCXWxp1qwlulT08= Received: from DFLE106.ent.ti.com (dfle106.ent.ti.com [10.64.6.27]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 3346F64n064194 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 4 Apr 2023 01:15:06 -0500 Received: from DFLE110.ent.ti.com (10.64.6.31) by DFLE106.ent.ti.com (10.64.6.27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16; Tue, 4 Apr 2023 01:15:06 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE110.ent.ti.com (10.64.6.31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16 via Frontend Transport; Tue, 4 Apr 2023 01:15:06 -0500 Received: from uda0492258.dhcp.ti.com (ileaxei01-snat.itg.ti.com [10.180.69.5]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 3346ExN8087499; Tue, 4 Apr 2023 01:15:03 -0500 From: Siddharth Vadapalli To: , , , , , CC: , , , , Subject: [PATCH net-next v3 1/3] net: ethernet: ti: am65-cpsw: Move mode specific config to mac_config() Date: Tue, 4 Apr 2023 11:44:57 +0530 Message-ID: <20230404061459.1100519-2-s-vadapalli@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230404061459.1100519-1-s-vadapalli@ti.com> References: <20230404061459.1100519-1-s-vadapalli@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230403_231520_823921_2A462115 X-CRM114-Status: GOOD ( 16.72 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Move the interface mode specific configuration to the mac_config() callback am65_cpsw_nuss_mac_config(). Also, do not reset the MAC Control register on mac_link_down(). Only clear those bits that can possibly be set in mac_link_up(). Let the MAC remain in IDLE state after mac_link_down(). Bring it out of the IDLE state on mac_link_up(). Signed-off-by: Siddharth Vadapalli --- drivers/net/ethernet/ti/am65-cpsw-nuss.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c index d17757ecbf42..99d18eb6bbe9 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c @@ -1506,9 +1506,13 @@ static void am65_cpsw_nuss_mac_config(struct phylink_config *config, unsigned in struct am65_cpsw_common *common = port->common; if (common->pdata.extra_modes & BIT(state->interface)) { - if (state->interface == PHY_INTERFACE_MODE_SGMII) + if (state->interface == PHY_INTERFACE_MODE_SGMII) { writel(ADVERTISE_SGMII, port->sgmii_base + AM65_CPSW_SGMII_MR_ADV_ABILITY_REG); + cpsw_sl_ctl_set(port->slave.mac_sl, CPSW_SL_CTL_EXT_EN); + } else { + cpsw_sl_ctl_clr(port->slave.mac_sl, CPSW_SL_CTL_EXT_EN); + } writel(AM65_CPSW_SGMII_CONTROL_MR_AN_ENABLE, port->sgmii_base + AM65_CPSW_SGMII_CONTROL_REG); @@ -1523,6 +1527,7 @@ static void am65_cpsw_nuss_mac_link_down(struct phylink_config *config, unsigned struct am65_cpsw_port *port = container_of(slave, struct am65_cpsw_port, slave); struct am65_cpsw_common *common = port->common; struct net_device *ndev = port->ndev; + u32 mac_control; int tmo; /* disable forwarding */ @@ -1534,7 +1539,14 @@ static void am65_cpsw_nuss_mac_link_down(struct phylink_config *config, unsigned dev_dbg(common->dev, "down msc_sl %08x tmo %d\n", cpsw_sl_reg_read(port->slave.mac_sl, CPSW_SL_MACSTATUS), tmo); - cpsw_sl_ctl_reset(port->slave.mac_sl); + /* All the bits that am65_cpsw_nuss_mac_link_up() can possibly set */ + mac_control = CPSW_SL_CTL_GMII_EN | CPSW_SL_CTL_GIG | CPSW_SL_CTL_IFCTL_A | + CPSW_SL_CTL_FULLDUPLEX | CPSW_SL_CTL_RX_FLOW_EN | CPSW_SL_CTL_TX_FLOW_EN; + /* If interface mode is RGMII, CPSW_SL_CTL_EXT_EN might have been set for 10 Mbps */ + if (phy_interface_mode_is_rgmii(interface)) + mac_control |= CPSW_SL_CTL_EXT_EN; + /* Only clear those bits that can be set by am65_cpsw_nuss_mac_link_up() */ + cpsw_sl_ctl_clr(port->slave.mac_sl, mac_control); am65_cpsw_qos_link_down(ndev); netif_tx_stop_all_queues(ndev); @@ -1551,10 +1563,12 @@ static void am65_cpsw_nuss_mac_link_up(struct phylink_config *config, struct phy u32 mac_control = CPSW_SL_CTL_GMII_EN; struct net_device *ndev = port->ndev; + /* Bring the port out of idle state */ + cpsw_sl_ctl_clr(port->slave.mac_sl, CPSW_SL_CTL_CMD_IDLE); + if (speed == SPEED_1000) mac_control |= CPSW_SL_CTL_GIG; - if (interface == PHY_INTERFACE_MODE_SGMII) - mac_control |= CPSW_SL_CTL_EXT_EN; + /* TODO: Verify whether in-band is necessary for 10 Mbps RGMII */ if (speed == SPEED_10 && phy_interface_mode_is_rgmii(interface)) /* Can be used with in band mode only */ mac_control |= CPSW_SL_CTL_EXT_EN;