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![James Byrne](/assets/img/avatar_default.png)
Commit d397f7c45b
("net: phy: micrel: Separate KSZ9000 drivers from
KSZ8000 drivers") separated the KSZ8xxx and KSZ90x1 drivers and warns
that you shouldn't select both of them due to a device ID clash between
the KSZ9021 and the KS8721, asserting that "it is highly unlikely for a
system to contain both a KSZ8000 and a KSZ9000 PHY". Unfortunately
boards like the SAMA5D3xEK do contain both types of PHY, but fortunately
the Linux Micrel PHY driver provides a solution by using different PHY
ID and mask values to distinguish these chips.
This commit contains the following changes:
- The PHY ID and mask values for the KSZ9021 and the KS8721 now match
those used by the Linux driver.
- The warnings about not enabling both drivers have been removed.
- The description for PHY_MICREL_KSZ8XXX has been corrected (these are
10/100 PHYs, not GbE PHYs).
- PHY_MICREL_KSZ9021 and PHY_MICREL_KSZ9031 no longer select PHY_GIGE
since this is selected by PHY_MICREL_KSZ90X1.
- All of the relevant defconfig files have been updated now that
PHY_MICREL_KSZ8XXX does not default to 'Y'.
Signed-off-by: James Byrne <james.byrne@origamienergy.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
199 lines
4.3 KiB
C
199 lines
4.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Micrel PHY drivers
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*
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* Copyright 2010-2011 Freescale Semiconductor, Inc.
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* author Andy Fleming
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* (C) 2012 NetModule AG, David Andrey, added KSZ9031
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <fdtdec.h>
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#include <micrel.h>
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#include <phy.h>
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static struct phy_driver KSZ804_driver = {
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.name = "Micrel KSZ804",
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.uid = 0x221510,
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.mask = 0xfffff0,
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.features = PHY_BASIC_FEATURES,
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.config = &genphy_config,
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.startup = &genphy_startup,
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.shutdown = &genphy_shutdown,
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};
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#define MII_KSZPHY_OMSO 0x16
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#define KSZPHY_OMSO_B_CAST_OFF (1 << 9)
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static int ksz_genconfig_bcastoff(struct phy_device *phydev)
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{
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int ret;
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ret = phy_read(phydev, MDIO_DEVAD_NONE, MII_KSZPHY_OMSO);
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if (ret < 0)
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return ret;
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ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_KSZPHY_OMSO,
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ret | KSZPHY_OMSO_B_CAST_OFF);
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if (ret < 0)
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return ret;
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return genphy_config(phydev);
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}
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static struct phy_driver KSZ8031_driver = {
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.name = "Micrel KSZ8021/KSZ8031",
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.uid = 0x221550,
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.mask = 0xfffff0,
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.features = PHY_BASIC_FEATURES,
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.config = &ksz_genconfig_bcastoff,
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.startup = &genphy_startup,
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.shutdown = &genphy_shutdown,
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};
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/**
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* KSZ8051
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*/
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#define MII_KSZ8051_PHY_OMSO 0x16
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#define MII_KSZ8051_PHY_OMSO_NAND_TREE_ON (1 << 5)
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static int ksz8051_config(struct phy_device *phydev)
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{
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unsigned val;
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/* Disable NAND-tree */
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val = phy_read(phydev, MDIO_DEVAD_NONE, MII_KSZ8051_PHY_OMSO);
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val &= ~MII_KSZ8051_PHY_OMSO_NAND_TREE_ON;
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phy_write(phydev, MDIO_DEVAD_NONE, MII_KSZ8051_PHY_OMSO, val);
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return genphy_config(phydev);
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}
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static struct phy_driver KSZ8051_driver = {
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.name = "Micrel KSZ8051",
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.uid = 0x221550,
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.mask = 0xfffff0,
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.features = PHY_BASIC_FEATURES,
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.config = &ksz8051_config,
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.startup = &genphy_startup,
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.shutdown = &genphy_shutdown,
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};
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static struct phy_driver KSZ8081_driver = {
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.name = "Micrel KSZ8081",
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.uid = 0x221560,
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.mask = 0xfffff0,
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.features = PHY_BASIC_FEATURES,
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.config = &ksz_genconfig_bcastoff,
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.startup = &genphy_startup,
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.shutdown = &genphy_shutdown,
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};
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/**
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* KSZ8895
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*/
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static unsigned short smireg_to_phy(unsigned short reg)
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{
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return ((reg & 0xc0) >> 3) + 0x06 + ((reg & 0x20) >> 5);
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}
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static unsigned short smireg_to_reg(unsigned short reg)
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{
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return reg & 0x1F;
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}
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static void ksz8895_write_smireg(struct phy_device *phydev, int smireg, int val)
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{
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phydev->bus->write(phydev->bus, smireg_to_phy(smireg), MDIO_DEVAD_NONE,
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smireg_to_reg(smireg), val);
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}
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#if 0
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static int ksz8895_read_smireg(struct phy_device *phydev, int smireg)
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{
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return phydev->bus->read(phydev->bus, smireg_to_phy(smireg),
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MDIO_DEVAD_NONE, smireg_to_reg(smireg));
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}
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#endif
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int ksz8895_config(struct phy_device *phydev)
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{
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/* we are connected directly to the switch without
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* dedicated PHY. SCONF1 == 001 */
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phydev->link = 1;
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phydev->duplex = DUPLEX_FULL;
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phydev->speed = SPEED_100;
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/* Force the switch to start */
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ksz8895_write_smireg(phydev, 1, 1);
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return 0;
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}
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static int ksz8895_startup(struct phy_device *phydev)
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{
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return 0;
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}
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static struct phy_driver ksz8895_driver = {
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.name = "Micrel KSZ8895/KSZ8864",
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.uid = 0x221450,
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.mask = 0xffffe1,
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.features = PHY_BASIC_FEATURES,
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.config = &ksz8895_config,
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.startup = &ksz8895_startup,
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.shutdown = &genphy_shutdown,
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};
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/* Micrel used the exact same model number for the KSZ9021,
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* so the revision number is used to distinguish them.
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*/
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static struct phy_driver KS8721_driver = {
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.name = "Micrel KS8721BL",
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.uid = 0x221618,
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.mask = 0xfffffc,
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.features = PHY_BASIC_FEATURES,
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.config = &genphy_config,
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.startup = &genphy_startup,
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.shutdown = &genphy_shutdown,
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};
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int ksz886x_config(struct phy_device *phydev)
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{
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/* we are connected directly to the switch without
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* dedicated PHY. */
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phydev->link = 1;
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phydev->duplex = DUPLEX_FULL;
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phydev->speed = SPEED_100;
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return 0;
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}
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static int ksz886x_startup(struct phy_device *phydev)
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{
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return 0;
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}
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static struct phy_driver ksz886x_driver = {
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.name = "Micrel KSZ886x Switch",
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.uid = 0x00221430,
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.mask = 0xfffff0,
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.features = PHY_BASIC_FEATURES,
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.config = &ksz886x_config,
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.startup = &ksz886x_startup,
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.shutdown = &genphy_shutdown,
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};
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int phy_micrel_ksz8xxx_init(void)
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{
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phy_register(&KSZ804_driver);
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phy_register(&KSZ8031_driver);
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phy_register(&KSZ8051_driver);
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phy_register(&KSZ8081_driver);
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phy_register(&KS8721_driver);
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phy_register(&ksz8895_driver);
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phy_register(&ksz886x_driver);
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return 0;
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}
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