1 // SPDX-License-Identifier: GPL-2.0+
3  *	drivers/net/phy/broadcom.c
13 #include "bcm-phy-lib.h"
15 #include <linux/phy.h>
20 	((phydev)->drv->phy_id & (phydev)->drv->phy_id_mask)
23 	((phydev)->drv->phy_id & ~((phydev)->drv->phy_id_mask))
25 MODULE_DESCRIPTION("Broadcom PHY driver");
33 	/* handling PHY's internal RX clock delay */  in bcm54xx_config_clock_delay()
36 	if (phydev->interface == PHY_INTERFACE_MODE_RGMII ||  in bcm54xx_config_clock_delay()
37 	    phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {  in bcm54xx_config_clock_delay()
38 		/* Disable RGMII RXC-RXD skew */  in bcm54xx_config_clock_delay()
41 	if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||  in bcm54xx_config_clock_delay()
42 	    phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {  in bcm54xx_config_clock_delay()
43 		/* Enable RGMII RXC-RXD skew */  in bcm54xx_config_clock_delay()
51 	/* handling PHY's internal TX clock delay */  in bcm54xx_config_clock_delay()
53 	if (phydev->interface == PHY_INTERFACE_MODE_RGMII ||  in bcm54xx_config_clock_delay()
54 	    phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {  in bcm54xx_config_clock_delay()
55 		/* Disable internal TX clock delay */  in bcm54xx_config_clock_delay()
58 	if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||  in bcm54xx_config_clock_delay()
59 	    phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {  in bcm54xx_config_clock_delay()
60 		/* Enable internal TX clock delay */  in bcm54xx_config_clock_delay()
76 	if (phydev->dev_flags & PHY_BRCM_EN_MASTER_MODE) {  in bcm54210e_config_init()
92 	if (!(phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED)) {  in bcm54612e_config_init()
110 	if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&  in bcm54616s_config_init()
111 	    phydev->interface != PHY_INTERFACE_MODE_1000BASEX)  in bcm54616s_config_init()
126 	/* Select 1000BASE-X register set (primary SerDes) */  in bcm54616s_config_init()
142 	val |= phydev->interface == PHY_INTERFACE_MODE_SGMII ?  in bcm54616s_config_init()
210 		/* Clear bit 9 to fix a phy interop issue. */  in bcm54xx_phydsp_config()
216 		if (phydev->drv->phy_id == PHY_ID_BCM50610) {  in bcm54xx_phydsp_config()
250 	/* Abort if we are using an untested phy. */  in bcm54xx_adjust_rxrefclk()
273 		if (phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) {  in bcm54xx_adjust_rxrefclk()
282 	if (!clk125en || (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))  in bcm54xx_adjust_rxrefclk()
287 	if (phydev->dev_flags & PHY_BRCM_DIS_TXCRXC_NOENRGY) {  in bcm54xx_adjust_rxrefclk()
304 	if (!clk125en || (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))  in bcm54xx_adjust_rxrefclk()
337 	    (phydev->dev_flags & PHY_BRCM_CLEAR_RGMII_MODE))  in bcm54xx_config_init()
357 		/* For BCM54810, we need to disable BroadR-Reach function */  in bcm54xx_config_init()
398 	/* Upon exiting power down, the PHY remains in an internal reset state  in bcm54xx_resume()
410 	/* Disable BroadR-Reach function. */  in bcm54811_config_init()
421 	if (!(phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED)) {  in bcm54811_config_init()
438 	if (phydev->dev_flags & PHY_BCM_FLAGS_MODE_1000BX) {  in bcm5482_config_init()
449 		 * Enable SGMII slave mode and auto-detection  in bcm5482_config_init()
474 		 * Select 1000BASE-X register set (primary SerDes)  in bcm5482_config_init()
489 		 * Auto-negotiation doesn't seem to work quite right  in bcm5482_config_init()
490 		 * in this mode, so we disable it and force it to the  in bcm5482_config_init()
494 		phydev->autoneg = AUTONEG_DISABLE;  in bcm5482_config_init()
495 		phydev->speed = SPEED_1000;  in bcm5482_config_init()
496 		phydev->duplex = DUPLEX_FULL;  in bcm5482_config_init()
508 	if (phydev->dev_flags & PHY_BCM_FLAGS_MODE_1000BX) {  in bcm5482_read_status()
510 		 * Only link status matters for 1000Base-X mode, so force  in bcm5482_read_status()
511 		 * 1000 Mbit/s full-duplex status  in bcm5482_read_status()
513 		if (phydev->link) {  in bcm5482_read_status()
514 			phydev->speed = SPEED_1000;  in bcm5482_read_status()
515 			phydev->duplex = DUPLEX_FULL;  in bcm5482_read_status()
524 	struct device_node *np = phydev->mdio.dev.of_node;  in bcm5481_config_aneg()
533 	if (of_property_read_bool(np, "enet-phy-lane-swap")) {  in bcm5481_config_aneg()
534 		/* Lane Swap - Undocumented register...magic! */  in bcm5481_config_aneg()
552 	/* The PHY is strapped in RGMII-fiber mode when INTERF_SEL[1:0]  in bcm54616s_probe()
553 	 * is 01b, and the link between PHY and its link partner can be  in bcm54616s_probe()
554 	 * either 1000Base-X or 100Base-FX.  in bcm54616s_probe()
555 	 * RGMII-1000Base-X is properly supported, but RGMII-100Base-FX  in bcm54616s_probe()
563 		/* Bit 0 of the SerDes 100-FX Control register, when set  in bcm54616s_probe()
564 		 * to 1, sets the MII/RGMII -> 100BASE-FX configuration.  in bcm54616s_probe()
565 		 * When this bit is set to 0, it sets the GMII/RGMII ->  in bcm54616s_probe()
566 		 * 1000BASE-X configuration.  in bcm54616s_probe()
569 			phydev->dev_flags |= PHY_BCM_FLAGS_MODE_1000BX;  in bcm54616s_probe()
571 		phydev->port = PORT_FIBRE;  in bcm54616s_probe()
582 	if (phydev->dev_flags & PHY_BCM_FLAGS_MODE_1000BX)  in bcm54616s_config_aneg()
597 	if (phydev->dev_flags & PHY_BCM_FLAGS_MODE_1000BX)  in bcm54616s_read_status()
620 	/* Reset the PHY to bring it to a known state. */  in brcm_fet_config_init()
671 	if (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE) {  in brcm_fet_config_init()
706 	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)  in brcm_fet_config_intr()
723 	priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);  in bcm53xx_phy_probe()
725 		return -ENOMEM;  in bcm53xx_phy_probe()
727 	phydev->priv = priv;  in bcm53xx_phy_probe()
729 	priv->stats = devm_kcalloc(&phydev->mdio.dev,  in bcm53xx_phy_probe()
732 	if (!priv->stats)  in bcm53xx_phy_probe()
733 		return -ENOMEM;  in bcm53xx_phy_probe()
741 	struct bcm53xx_phy_priv *priv = phydev->priv;  in bcm53xx_phy_get_stats()
743 	bcm_phy_get_stats(phydev, priv->stats, stats, data);  in bcm53xx_phy_get_stats()