From nobody Thu Dec 18 04:30:30 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4E857CDB47E for ; Fri, 13 Oct 2023 12:24:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231742AbjJMMYd (ORCPT ); Fri, 13 Oct 2023 08:24:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39760 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231548AbjJMMY2 (ORCPT ); Fri, 13 Oct 2023 08:24:28 -0400 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0E3F5BF for ; Fri, 13 Oct 2023 05:24:26 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qrHD6-00016E-4V; Fri, 13 Oct 2023 14:24:08 +0200 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qrHD4-001OKh-VV; Fri, 13 Oct 2023 14:24:06 +0200 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1qrHD4-00FiNc-2t; Fri, 13 Oct 2023 14:24:06 +0200 From: Oleksij Rempel To: "David S. Miller" , Andrew Lunn , Eric Dumazet , Florian Fainelli , Jakub Kicinski , Paolo Abeni , Vladimir Oltean , Woojung Huh , Arun Ramadoss , Conor Dooley , Krzysztof Kozlowski , Rob Herring Cc: Oleksij Rempel , kernel@pengutronix.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, UNGLinuxDriver@microchip.com, "Russell King (Oracle)" , devicetree@vger.kernel.org Subject: [PATCH net-next v3 1/7] net: dsa: microchip: Add missing MAC address register offset for ksz8863 Date: Fri, 13 Oct 2023 14:23:59 +0200 Message-Id: <20231013122405.3745475-2-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231013122405.3745475-1-o.rempel@pengutronix.de> References: <20231013122405.3745475-1-o.rempel@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add the missing offset for the global MAC address register (REG_SW_MAC_ADDR) for the ksz8863 family of switches. Signed-off-by: Oleksij Rempel Reviewed-by: Andrew Lunn Reviewed-by: Florian Fainelli --- drivers/net/dsa/microchip/ksz_common.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/micro= chip/ksz_common.c index b800ace40ce1..02fab1adb27f 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -441,6 +441,7 @@ static const u8 ksz8795_shifts[] =3D { }; =20 static const u16 ksz8863_regs[] =3D { + [REG_SW_MAC_ADDR] =3D 0x70, [REG_IND_CTRL_0] =3D 0x79, [REG_IND_DATA_8] =3D 0x7B, [REG_IND_DATA_CHECK] =3D 0x7B, --=20 2.39.2 From nobody Thu Dec 18 04:30:30 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0666ACDB47E for ; Fri, 13 Oct 2023 12:24:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231835AbjJMMYt (ORCPT ); Fri, 13 Oct 2023 08:24:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39810 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231725AbjJMMYb (ORCPT ); Fri, 13 Oct 2023 08:24:31 -0400 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F03F4BD for ; Fri, 13 Oct 2023 05:24:28 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qrHD6-00016D-4T; Fri, 13 Oct 2023 14:24:08 +0200 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qrHD4-001OKi-W2; Fri, 13 Oct 2023 14:24:07 +0200 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1qrHD4-00FiNm-2y; Fri, 13 Oct 2023 14:24:06 +0200 From: Oleksij Rempel To: "David S. Miller" , Andrew Lunn , Eric Dumazet , Florian Fainelli , Jakub Kicinski , Paolo Abeni , Vladimir Oltean , Woojung Huh , Arun Ramadoss , Conor Dooley , Krzysztof Kozlowski , Rob Herring Cc: Oleksij Rempel , kernel@pengutronix.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, UNGLinuxDriver@microchip.com, "Russell King (Oracle)" , devicetree@vger.kernel.org Subject: [PATCH net-next v3 2/7] net: dsa: microchip: Set unique MAC at startup for WoL support Date: Fri, 13 Oct 2023 14:24:00 +0200 Message-Id: <20231013122405.3745475-3-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231013122405.3745475-1-o.rempel@pengutronix.de> References: <20231013122405.3745475-1-o.rempel@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Set a unique global MAC address for each switch on the network at system startup by syncing the switch's global MAC address with the Ethernet address of the DSA master interface. This is crucial for supporting Wake-on-LAN (WoL) functionality, as it requires a unique address for each switch. Although the operation is performed only at system start and won't sync if the master Ethernet address changes dynamically, it lays the groundwork for WoL support by ensuring a unique MAC address for each switch. Signed-off-by: Oleksij Rempel --- drivers/net/dsa/microchip/ksz_common.c | 69 +++++++++++++++++++++++--- 1 file changed, 62 insertions(+), 7 deletions(-) diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/micro= chip/ksz_common.c index 02fab1adb27f..db0ef4ad181e 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -2173,6 +2173,57 @@ static int ksz_pirq_setup(struct ksz_device *dev, u8= p) return ksz_irq_common_setup(dev, pirq); } =20 +/** + * ksz_cmn_write_global_mac_addr - Write global MAC address to switch. + * @dev: The device structure. + * @addr: Pointer to MAC address. + * + * This function programs the switch's MAC address register with the given + * MAC address. The global MAC address is used as the source address in MAC + * pause control frames, for HSR self-address filtering, Wake-on-LAN (WoL), + * and for self-address filtering purposes. + * + * Return: 0 on success, or an error code on failure. + */ +static int ksz_cmn_write_global_mac_addr(struct ksz_device *dev, + const unsigned char *addr) +{ + const u16 *regs =3D dev->info->regs; + int i, ret; + + for (i =3D 0; i < ETH_ALEN; i++) { + ret =3D ksz_write8(dev, regs[REG_SW_MAC_ADDR] + i, addr[i]); + if (ret) + return ret; + } + + return 0; +} + +/** + * ksz_cmn_set_default_switch_mac_addr - Set the switch's global MAC addre= ss + * from master port. + * @dev: The device structure. + * + * This function retrieves the MAC address from the master network device + * associated with the CPU port and writes it to the switch's global MAC + * address register. + * + * Return: 0 on success, or an error code on failure. + */ +static int ksz_cmn_set_default_switch_mac_addr(struct ksz_device *dev) +{ + struct dsa_switch *ds =3D dev->ds; + struct net_device *master; + + /* use CPU port to get master net device because it is guaranteed + * to be a valid port + */ + master =3D dsa_port_to_master(dsa_to_port(ds, dev->cpu_port)); + + return ksz_cmn_write_global_mac_addr(dev, master->dev_addr); +} + static int ksz_setup(struct dsa_switch *ds) { struct ksz_device *dev =3D ds->priv; @@ -2194,6 +2245,16 @@ static int ksz_setup(struct dsa_switch *ds) return ret; } =20 + /* Set switch MAC address from master port. + * In the current implementation, this operation is only + * performed during system start and will not sync if the master + * Ethernet address changes dynamically thereafter. The global MAC + * address still can be overwritten for HSR use cases. + */ + ret =3D ksz_cmn_set_default_switch_mac_addr(dev); + if (ret) + return ret; + /* set broadcast storm protection 10% rate */ regmap_update_bits(ksz_regmap_16(dev), regs[S_BROADCAST_CTRL], BROADCAST_STORM_RATE, @@ -3572,8 +3633,6 @@ static int ksz_switch_macaddr_get(struct dsa_switch *= ds, int port, const unsigned char *addr =3D slave->dev_addr; struct ksz_switch_macaddr *switch_macaddr; struct ksz_device *dev =3D ds->priv; - const u16 *regs =3D dev->info->regs; - int i; =20 /* Make sure concurrent MAC address changes are blocked */ ASSERT_RTNL(); @@ -3599,11 +3658,7 @@ static int ksz_switch_macaddr_get(struct dsa_switch = *ds, int port, refcount_set(&switch_macaddr->refcount, 1); dev->switch_macaddr =3D switch_macaddr; =20 - /* Program the switch MAC address to hardware */ - for (i =3D 0; i < ETH_ALEN; i++) - ksz_write8(dev, regs[REG_SW_MAC_ADDR] + i, addr[i]); - - return 0; + return ksz_cmn_write_global_mac_addr(dev, addr); } =20 static void ksz_switch_macaddr_put(struct dsa_switch *ds) --=20 2.39.2 From nobody Thu Dec 18 04:30:30 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 95C45CDB482 for ; Fri, 13 Oct 2023 12:24:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231804AbjJMMYp (ORCPT ); Fri, 13 Oct 2023 08:24:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39796 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231724AbjJMMYb (ORCPT ); Fri, 13 Oct 2023 08:24:31 -0400 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 55F1ECA for ; Fri, 13 Oct 2023 05:24:28 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qrHD6-00016F-4V; Fri, 13 Oct 2023 14:24:08 +0200 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qrHD5-001OKj-0t; Fri, 13 Oct 2023 14:24:07 +0200 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1qrHD4-00FiNw-32; Fri, 13 Oct 2023 14:24:06 +0200 From: Oleksij Rempel To: "David S. Miller" , Andrew Lunn , Eric Dumazet , Florian Fainelli , Jakub Kicinski , Paolo Abeni , Vladimir Oltean , Woojung Huh , Arun Ramadoss , Conor Dooley , Krzysztof Kozlowski , Rob Herring Cc: Oleksij Rempel , kernel@pengutronix.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, UNGLinuxDriver@microchip.com, "Russell King (Oracle)" , devicetree@vger.kernel.org Subject: [PATCH net-next v3 3/7] net: dsa: microchip: ksz9477: add Wake on LAN support Date: Fri, 13 Oct 2023 14:24:01 +0200 Message-Id: <20231013122405.3745475-4-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231013122405.3745475-1-o.rempel@pengutronix.de> References: <20231013122405.3745475-1-o.rempel@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add WoL support for KSZ9477 family of switches. This code was tested on KSZ8563 chip and supports only wake on Magic Packet for now. Other parts needed for fully operational WoL support are in the followup patches. Signed-off-by: Oleksij Rempel --- drivers/net/dsa/microchip/ksz9477.c | 109 +++++++++++++++++++++++++ drivers/net/dsa/microchip/ksz9477.h | 4 + drivers/net/dsa/microchip/ksz_common.c | 26 ++++++ drivers/net/dsa/microchip/ksz_common.h | 4 + 4 files changed, 143 insertions(+) diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchi= p/ksz9477.c index cde8ef33d029..3d9b6d6083cf 100644 --- a/drivers/net/dsa/microchip/ksz9477.c +++ b/drivers/net/dsa/microchip/ksz9477.c @@ -56,6 +56,112 @@ int ksz9477_change_mtu(struct ksz_device *dev, int port= , int mtu) REG_SW_MTU_MASK, frame_size); } =20 +/** + * ksz9477_handle_wake_reason - Handle wake reason on a specified port. + * @dev: The device structure. + * @port: The port number. + * + * This function reads the PME (Power Management Event) status register of= a + * specified port to determine the wake reason. If there is no wake event,= it + * returns early. Otherwise, it logs the wake reason which could be due to= a + * "Magic Packet", "Link Up", or "Energy Detect" event. The PME status reg= ister + * is then cleared to acknowledge the handling of the wake event. + * + * Return: 0 on success, or an error code on failure. + */ +static int ksz9477_handle_wake_reason(struct ksz_device *dev, int port) +{ + u8 pme_status; + int ret; + + ret =3D ksz_pread8(dev, port, REG_PORT_PME_STATUS, &pme_status); + if (ret) + return ret; + + if (!pme_status) + return 0; + + dev_dbg(dev->dev, "Wake event on port %d due to: %s %s %s\n", port, + pme_status & PME_WOL_MAGICPKT ? "\"Magic Packet\"" : "", + pme_status & PME_WOL_LINKUP ? "\"Link Up\"" : "", + pme_status & PME_WOL_ENERGY ? "\"Enery detect\"" : ""); + + return ksz_pwrite8(dev, port, REG_PORT_PME_STATUS, pme_status); +} + +/** + * ksz9477_get_wol - Get Wake-on-LAN settings for a specified port. + * @dev: The device structure. + * @port: The port number. + * @wol: Pointer to ethtool Wake-on-LAN settings structure. + * + * This function checks the PME Pin Control Register to see if PME Pin Ou= tput + * Enable is set, indicating PME is enabled. If enabled, it sets the suppo= rted + * and active WoL flags. + */ +void ksz9477_get_wol(struct ksz_device *dev, int port, + struct ethtool_wolinfo *wol) +{ + u8 pme_ctrl, pme_conf; + int ret; + + ret =3D ksz_read8(dev, REG_SW_PME_CTRL, &pme_conf); + if (ret) + return; + + if (!(pme_conf & PME_ENABLE)) + return; + + wol->supported =3D WAKE_MAGIC; + + ret =3D ksz_pread8(dev, port, REG_PORT_PME_CTRL, &pme_ctrl); + if (ret) + return; + + if (pme_ctrl & PME_WOL_MAGICPKT) + wol->wolopts |=3D WAKE_MAGIC; +} + +/** + * ksz9477_set_wol - Set Wake-on-LAN settings for a specified port. + * @dev: The device structure. + * @port: The port number. + * @wol: Pointer to ethtool Wake-on-LAN settings structure. + * + * This function configures Wake-on-LAN (WoL) settings for a specified por= t. + * It validates the provided WoL options, checks if PME is enabled via the + * switch's PME Pin Control Register, clears any previous wake reasons, + * and sets the Magic Packet flag in the port's PME control register if + * specified. + * + * Return: 0 on success, or other error codes on failure. + */ +int ksz9477_set_wol(struct ksz_device *dev, int port, + struct ethtool_wolinfo *wol) +{ + u8 pme_conf, pme_ctrl =3D 0; + int ret; + + if (wol->wolopts & ~WAKE_MAGIC) + return -EINVAL; + + ret =3D ksz_read8(dev, REG_SW_PME_CTRL, &pme_conf); + if (ret) + return ret; + + if (!(pme_conf & PME_ENABLE)) + return -EOPNOTSUPP; + + ret =3D ksz9477_handle_wake_reason(dev, port); + if (ret) + return ret; + + if (wol->wolopts & WAKE_MAGIC) + pme_ctrl |=3D PME_WOL_MAGICPKT; + + return ksz_pwrite8(dev, port, REG_PORT_PME_CTRL, pme_ctrl); +} + static int ksz9477_wait_vlan_ctrl_ready(struct ksz_device *dev) { unsigned int val; @@ -1006,6 +1112,9 @@ void ksz9477_port_setup(struct ksz_device *dev, int p= ort, bool cpu_port) ksz_pread16(dev, port, REG_PORT_PHY_INT_ENABLE, &data16); =20 ksz9477_port_acl_init(dev, port); + + /* clear pending wake flags */ + ksz9477_handle_wake_reason(dev, port); } =20 void ksz9477_config_cpu_port(struct dsa_switch *ds) diff --git a/drivers/net/dsa/microchip/ksz9477.h b/drivers/net/dsa/microchi= p/ksz9477.h index f90e2e8ebe80..fa8d0318b437 100644 --- a/drivers/net/dsa/microchip/ksz9477.h +++ b/drivers/net/dsa/microchip/ksz9477.h @@ -58,6 +58,10 @@ void ksz9477_switch_exit(struct ksz_device *dev); void ksz9477_port_queue_split(struct ksz_device *dev, int port); void ksz9477_hsr_join(struct dsa_switch *ds, int port, struct net_device *= hsr); void ksz9477_hsr_leave(struct dsa_switch *ds, int port, struct net_device = *hsr); +void ksz9477_get_wol(struct ksz_device *dev, int port, + struct ethtool_wolinfo *wol); +int ksz9477_set_wol(struct ksz_device *dev, int port, + struct ethtool_wolinfo *wol); =20 int ksz9477_port_acl_init(struct ksz_device *dev, int port); void ksz9477_port_acl_free(struct ksz_device *dev, int port); diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/micro= chip/ksz_common.c index db0ef4ad181e..bef1951fe6f2 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -319,6 +319,8 @@ static const struct ksz_dev_ops ksz9477_dev_ops =3D { .mdb_del =3D ksz9477_mdb_del, .change_mtu =3D ksz9477_change_mtu, .phylink_mac_link_up =3D ksz9477_phylink_mac_link_up, + .wol_get =3D ksz9477_get_wol, + .wol_set =3D ksz9477_set_wol, .config_cpu_port =3D ksz9477_config_cpu_port, .tc_cbs_set_cinc =3D ksz9477_tc_cbs_set_cinc, .enable_stp_addr =3D ksz9477_enable_stp_addr, @@ -2935,6 +2937,28 @@ static int ksz_set_mac_eee(struct dsa_switch *ds, in= t port, return 0; } =20 +static void ksz_get_wol(struct dsa_switch *ds, int port, + struct ethtool_wolinfo *wol) +{ + struct ksz_device *dev =3D ds->priv; + + memset(wol, 0, sizeof(*wol)); + + if (dev->dev_ops->wol_get) + dev->dev_ops->wol_get(dev, port, wol); +} + +static int ksz_set_wol(struct dsa_switch *ds, int port, + struct ethtool_wolinfo *wol) +{ + struct ksz_device *dev =3D ds->priv; + + if (dev->dev_ops->wol_set) + return dev->dev_ops->wol_set(dev, port, wol); + + return -EOPNOTSUPP; +} + static void ksz_set_xmii(struct ksz_device *dev, int port, phy_interface_t interface) { @@ -3782,6 +3806,8 @@ static const struct dsa_switch_ops ksz_switch_ops =3D= { .get_pause_stats =3D ksz_get_pause_stats, .port_change_mtu =3D ksz_change_mtu, .port_max_mtu =3D ksz_max_mtu, + .get_wol =3D ksz_get_wol, + .set_wol =3D ksz_set_wol, .get_ts_info =3D ksz_get_ts_info, .port_hwtstamp_get =3D ksz_hwtstamp_get, .port_hwtstamp_set =3D ksz_hwtstamp_set, diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/micro= chip/ksz_common.h index 8842efca0871..43d0d8717eaa 100644 --- a/drivers/net/dsa/microchip/ksz_common.h +++ b/drivers/net/dsa/microchip/ksz_common.h @@ -373,6 +373,10 @@ struct ksz_dev_ops { int duplex, bool tx_pause, bool rx_pause); void (*setup_rgmii_delay)(struct ksz_device *dev, int port); int (*tc_cbs_set_cinc)(struct ksz_device *dev, int port, u32 val); + void (*wol_get)(struct ksz_device *dev, int port, + struct ethtool_wolinfo *wol); + int (*wol_set)(struct ksz_device *dev, int port, + struct ethtool_wolinfo *wol); void (*config_cpu_port)(struct dsa_switch *ds); int (*enable_stp_addr)(struct ksz_device *dev); int (*reset)(struct ksz_device *dev); --=20 2.39.2 From nobody Thu Dec 18 04:30:30 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7EBBECDB47E for ; Fri, 13 Oct 2023 12:24:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231865AbjJMMYw (ORCPT ); Fri, 13 Oct 2023 08:24:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39814 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231736AbjJMMYc (ORCPT ); Fri, 13 Oct 2023 08:24:32 -0400 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 96C5ABF for ; Fri, 13 Oct 2023 05:24:30 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qrHD6-00016G-4T; Fri, 13 Oct 2023 14:24:08 +0200 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qrHD5-001OKl-1o; Fri, 13 Oct 2023 14:24:07 +0200 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1qrHD4-00FiO6-36; Fri, 13 Oct 2023 14:24:06 +0200 From: Oleksij Rempel To: "David S. Miller" , Andrew Lunn , Eric Dumazet , Florian Fainelli , Jakub Kicinski , Paolo Abeni , Vladimir Oltean , Woojung Huh , Arun Ramadoss , Conor Dooley , Krzysztof Kozlowski , Rob Herring Cc: Oleksij Rempel , kernel@pengutronix.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, UNGLinuxDriver@microchip.com, "Russell King (Oracle)" , devicetree@vger.kernel.org Subject: [PATCH net-next v3 4/7] net: dsa: microchip: ksz9477: add Wake on PHY event support Date: Fri, 13 Oct 2023 14:24:02 +0200 Message-Id: <20231013122405.3745475-5-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231013122405.3745475-1-o.rempel@pengutronix.de> References: <20231013122405.3745475-1-o.rempel@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" KSZ9477 family of switches supports multiple PHY events: - wake on Link Up - wake on Energy Detect. Since current UAPI can't differentiate between this PHY events, map all of = them to WAKE_PHY. Signed-off-by: Oleksij Rempel --- drivers/net/dsa/microchip/ksz9477.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchi= p/ksz9477.c index 3d9b6d6083cf..8d51ec629d76 100644 --- a/drivers/net/dsa/microchip/ksz9477.c +++ b/drivers/net/dsa/microchip/ksz9477.c @@ -112,7 +112,7 @@ void ksz9477_get_wol(struct ksz_device *dev, int port, if (!(pme_conf & PME_ENABLE)) return; =20 - wol->supported =3D WAKE_MAGIC; + wol->supported =3D WAKE_PHY | WAKE_MAGIC; =20 ret =3D ksz_pread8(dev, port, REG_PORT_PME_CTRL, &pme_ctrl); if (ret) @@ -120,6 +120,8 @@ void ksz9477_get_wol(struct ksz_device *dev, int port, =20 if (pme_ctrl & PME_WOL_MAGICPKT) wol->wolopts |=3D WAKE_MAGIC; + if (pme_ctrl & (PME_WOL_LINKUP | PME_WOL_ENERGY)) + wol->wolopts |=3D WAKE_PHY; } =20 /** @@ -142,7 +144,7 @@ int ksz9477_set_wol(struct ksz_device *dev, int port, u8 pme_conf, pme_ctrl =3D 0; int ret; =20 - if (wol->wolopts & ~WAKE_MAGIC) + if (wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC)) return -EINVAL; =20 ret =3D ksz_read8(dev, REG_SW_PME_CTRL, &pme_conf); @@ -158,6 +160,8 @@ int ksz9477_set_wol(struct ksz_device *dev, int port, =20 if (wol->wolopts & WAKE_MAGIC) pme_ctrl |=3D PME_WOL_MAGICPKT; + if (wol->wolopts & WAKE_PHY) + pme_ctrl |=3D PME_WOL_LINKUP | PME_WOL_ENERGY; =20 return ksz_pwrite8(dev, port, REG_PORT_PME_CTRL, pme_ctrl); } --=20 2.39.2 From nobody Thu Dec 18 04:30:30 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 21EB7CDB47E for ; Fri, 13 Oct 2023 12:24:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231755AbjJMMYk (ORCPT ); Fri, 13 Oct 2023 08:24:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39778 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231714AbjJMMYa (ORCPT ); Fri, 13 Oct 2023 08:24:30 -0400 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CAF05C9 for ; Fri, 13 Oct 2023 05:24:27 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qrHD6-00016H-4T; Fri, 13 Oct 2023 14:24:08 +0200 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qrHD5-001OKm-2C; Fri, 13 Oct 2023 14:24:07 +0200 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1qrHD4-00FiOH-3A; Fri, 13 Oct 2023 14:24:06 +0200 From: Oleksij Rempel To: "David S. Miller" , Andrew Lunn , Eric Dumazet , Florian Fainelli , Jakub Kicinski , Paolo Abeni , Vladimir Oltean , Woojung Huh , Arun Ramadoss , Conor Dooley , Krzysztof Kozlowski , Rob Herring Cc: Oleksij Rempel , Conor Dooley , kernel@pengutronix.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, UNGLinuxDriver@microchip.com, "Russell King (Oracle)" , devicetree@vger.kernel.org Subject: [PATCH net-next v3 5/7] dt-bindings: net: dsa: microchip: add wakeup-source property Date: Fri, 13 Oct 2023 14:24:03 +0200 Message-Id: <20231013122405.3745475-6-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231013122405.3745475-1-o.rempel@pengutronix.de> References: <20231013122405.3745475-1-o.rempel@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add wakeup-source property to enable Wake on Lan functionality in the switch. Since PME wake pin is not always attached to the SoC, use wakeup-source instead of wakeup-gpios Signed-off-by: Oleksij Rempel Acked-by: Conor Dooley --- Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml b= /Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml index 41014f5c01c4..5751a729af33 100644 --- a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml +++ b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml @@ -72,6 +72,8 @@ properties: interrupts: maxItems: 1 =20 + wakeup-source: true + required: - compatible - reg --=20 2.39.2 From nobody Thu Dec 18 04:30:30 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82265CDB47E for ; Fri, 13 Oct 2023 12:24:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231786AbjJMMYn (ORCPT ); Fri, 13 Oct 2023 08:24:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39766 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231723AbjJMMYa (ORCPT ); Fri, 13 Oct 2023 08:24:30 -0400 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B457FC0 for ; Fri, 13 Oct 2023 05:24:27 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qrHD6-00016I-4U; Fri, 13 Oct 2023 14:24:08 +0200 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qrHD5-001OKo-3b; Fri, 13 Oct 2023 14:24:07 +0200 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1qrHD4-00FiOR-3D; Fri, 13 Oct 2023 14:24:06 +0200 From: Oleksij Rempel To: "David S. Miller" , Andrew Lunn , Eric Dumazet , Florian Fainelli , Jakub Kicinski , Paolo Abeni , Vladimir Oltean , Woojung Huh , Arun Ramadoss , Conor Dooley , Krzysztof Kozlowski , Rob Herring Cc: Oleksij Rempel , kernel@pengutronix.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, UNGLinuxDriver@microchip.com, "Russell King (Oracle)" , devicetree@vger.kernel.org Subject: [PATCH net-next v3 6/7] net: dsa: microchip: use wakeup-source DT property to enable PME output Date: Fri, 13 Oct 2023 14:24:04 +0200 Message-Id: <20231013122405.3745475-7-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231013122405.3745475-1-o.rempel@pengutronix.de> References: <20231013122405.3745475-1-o.rempel@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" KSZ switches with WoL support signals wake event over PME pin. If this pin is attached to some external PMIC or System Controller can't be described as GPIO, the only way to describe it in the devicetree is to use wakeup-source property. So, add support for this property and enable PME switch output if this property is present. Signed-off-by: Oleksij Rempel --- drivers/net/dsa/microchip/ksz9477.c | 3 +++ drivers/net/dsa/microchip/ksz_common.c | 3 +++ drivers/net/dsa/microchip/ksz_common.h | 1 + 3 files changed, 7 insertions(+) diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchi= p/ksz9477.c index 8d51ec629d76..8035e14ac372 100644 --- a/drivers/net/dsa/microchip/ksz9477.c +++ b/drivers/net/dsa/microchip/ksz9477.c @@ -1241,6 +1241,9 @@ int ksz9477_setup(struct dsa_switch *ds) /* enable global MIB counter freeze function */ ksz_cfg(dev, REG_SW_MAC_CTRL_6, SW_MIB_COUNTER_FREEZE, true); =20 + if (dev->wakeup_source) + ksz_write8(dev, REG_SW_PME_CTRL, PME_ENABLE); + return 0; } =20 diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/micro= chip/ksz_common.c index bef1951fe6f2..820edda82cea 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -4240,6 +4240,9 @@ int ksz_switch_register(struct ksz_device *dev) dev_err(dev->dev, "inconsistent synclko settings\n"); return -EINVAL; } + + dev->wakeup_source =3D of_property_read_bool(dev->dev->of_node, + "wakeup-source"); } =20 ret =3D dsa_register_switch(dev->ds); diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/micro= chip/ksz_common.h index 43d0d8717eaa..80679f38ee12 100644 --- a/drivers/net/dsa/microchip/ksz_common.h +++ b/drivers/net/dsa/microchip/ksz_common.h @@ -163,6 +163,7 @@ struct ksz_device { phy_interface_t compat_interface; bool synclko_125; bool synclko_disable; + bool wakeup_source; =20 struct vlan_table *vlan_cache; =20 --=20 2.39.2 From nobody Thu Dec 18 04:30:30 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 20467CDB483 for ; Fri, 13 Oct 2023 12:24:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231683AbjJMMYa (ORCPT ); Fri, 13 Oct 2023 08:24:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39764 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231682AbjJMMY2 (ORCPT ); Fri, 13 Oct 2023 08:24:28 -0400 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0DDA4BE for ; Fri, 13 Oct 2023 05:24:26 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qrHD6-00016J-4U; Fri, 13 Oct 2023 14:24:08 +0200 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qrHD5-001OKr-3q; Fri, 13 Oct 2023 14:24:07 +0200 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1qrHD5-00FiOb-03; Fri, 13 Oct 2023 14:24:07 +0200 From: Oleksij Rempel To: "David S. Miller" , Andrew Lunn , Eric Dumazet , Florian Fainelli , Jakub Kicinski , Paolo Abeni , Vladimir Oltean , Woojung Huh , Arun Ramadoss , Conor Dooley , Krzysztof Kozlowski , Rob Herring Cc: Oleksij Rempel , kernel@pengutronix.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, UNGLinuxDriver@microchip.com, "Russell King (Oracle)" , devicetree@vger.kernel.org Subject: [PATCH net-next v3 7/7] net: dsa: microchip: do not shut down the switch if WoL is active Date: Fri, 13 Oct 2023 14:24:05 +0200 Message-Id: <20231013122405.3745475-8-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231013122405.3745475-1-o.rempel@pengutronix.de> References: <20231013122405.3745475-1-o.rempel@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" For Wake on Lan we should not reconfigure, reset or power down the switch on shut down sequence. Signed-off-by: Oleksij Rempel --- drivers/net/dsa/microchip/ksz9477_i2c.c | 3 +++ drivers/net/dsa/microchip/ksz_common.c | 18 ++++++++++++++++++ drivers/net/dsa/microchip/ksz_common.h | 2 ++ drivers/net/dsa/microchip/ksz_spi.c | 3 +++ 4 files changed, 26 insertions(+) diff --git a/drivers/net/dsa/microchip/ksz9477_i2c.c b/drivers/net/dsa/micr= ochip/ksz9477_i2c.c index 2710afad4f3a..fe818742051c 100644 --- a/drivers/net/dsa/microchip/ksz9477_i2c.c +++ b/drivers/net/dsa/microchip/ksz9477_i2c.c @@ -66,6 +66,9 @@ static void ksz9477_i2c_shutdown(struct i2c_client *i2c) if (!dev) return; =20 + if (ksz_wol_is_active(dev)) + return; + if (dev->dev_ops->reset) dev->dev_ops->reset(dev); =20 diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/micro= chip/ksz_common.c index 820edda82cea..c3669b9cc6ce 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -2959,6 +2959,24 @@ static int ksz_set_wol(struct dsa_switch *ds, int po= rt, return -EOPNOTSUPP; } =20 +bool ksz_wol_is_active(struct ksz_device *dev) +{ + struct dsa_port *dp; + + if (!dev->wakeup_source) + return false; + + dsa_switch_for_each_user_port(dp, dev->ds) { + struct ethtool_wolinfo wol; + + ksz_get_wol(dev->ds, dp->index, &wol); + if (wol.wolopts) + return true; + } + + return false; +} + static void ksz_set_xmii(struct ksz_device *dev, int port, phy_interface_t interface) { diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/micro= chip/ksz_common.h index 80679f38ee12..84b1eed8cd2a 100644 --- a/drivers/net/dsa/microchip/ksz_common.h +++ b/drivers/net/dsa/microchip/ksz_common.h @@ -397,6 +397,8 @@ bool ksz_get_gbit(struct ksz_device *dev, int port); phy_interface_t ksz_get_xmii(struct ksz_device *dev, int port, bool gbit); extern const struct ksz_chip_data ksz_switch_chips[]; =20 +bool ksz_wol_is_active(struct ksz_device *dev); + /* Common register access functions */ static inline struct regmap *ksz_regmap_8(struct ksz_device *dev) { diff --git a/drivers/net/dsa/microchip/ksz_spi.c b/drivers/net/dsa/microchi= p/ksz_spi.c index 279338451621..c5d9c3d86ddb 100644 --- a/drivers/net/dsa/microchip/ksz_spi.c +++ b/drivers/net/dsa/microchip/ksz_spi.c @@ -114,6 +114,9 @@ static void ksz_spi_shutdown(struct spi_device *spi) if (!dev) return; =20 + if (ksz_wol_is_active(dev)) + return; + if (dev->dev_ops->reset) dev->dev_ops->reset(dev); =20 --=20 2.39.2