diff options
Diffstat (limited to 'board/freescale/ls1021aqds/eth.c')
| -rw-r--r-- | board/freescale/ls1021aqds/eth.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/board/freescale/ls1021aqds/eth.c b/board/freescale/ls1021aqds/eth.c new file mode 100644 index 0000000000..be351befec --- /dev/null +++ b/board/freescale/ls1021aqds/eth.c @@ -0,0 +1,186 @@ +/* + * Copyright 2014 Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + * + * This file handles the board muxing between the RGMII/SGMII PHYs on + * Freescale LS1021AQDS board. The RGMII PHYs are the three on-board 1Gb + * ports. The SGMII PHYs are provided by the standard Freescale four-port + * SGMII riser card. + * + * Muxing is handled via the PIXIS BRDCFG4 register. The EMI1 bits control + * muxing among the RGMII PHYs and the SGMII PHYs. The value for RGMII depends + * on which port is used. The value for SGMII depends on which slot the riser + * is inserted in. + */ + +#include <common.h> +#include <netdev.h> +#include <asm/arch/fsl_serdes.h> +#include <fsl_mdio.h> +#include <tsec.h> +#include <malloc.h> + +#include "../common/sgmii_riser.h" +#include "../common/qixis.h" + +#define EMI1_MASK 0x1f +#define EMI1_RGMII0 1 +#define EMI1_RGMII1 2 +#define EMI1_RGMII2 3 +#define EMI1_SGMII1 0x1c +#define EMI1_SGMII2 0x1d + +struct ls1021a_mdio { + struct mii_dev *realbus; +}; + +static void ls1021a_mux_mdio(int addr) +{ + u8 brdcfg4; + + brdcfg4 = QIXIS_READ(brdcfg[4]); + brdcfg4 &= EMI1_MASK; + + switch (addr) { + case EMI1_RGMII0: + brdcfg4 |= 0; + break; + case EMI1_RGMII1: + brdcfg4 |= 0x20; + break; + case EMI1_RGMII2: + brdcfg4 |= 0x40; + break; + case EMI1_SGMII1: + brdcfg4 |= 0x60; + break; + case EMI1_SGMII2: + brdcfg4 |= 0x80; + break; + default: + brdcfg4 |= 0xa0; + break; + } + + QIXIS_WRITE(brdcfg[4], brdcfg4); +} + +static int ls1021a_mdio_read(struct mii_dev *bus, int addr, int devad, + int regnum) +{ + struct ls1021a_mdio *priv = bus->priv; + + ls1021a_mux_mdio(addr); + + return priv->realbus->read(priv->realbus, addr, devad, regnum); +} + +static int ls1021a_mdio_write(struct mii_dev *bus, int addr, int devad, + int regnum, u16 value) +{ + struct ls1021a_mdio *priv = bus->priv; + + ls1021a_mux_mdio(addr); + + return priv->realbus->write(priv->realbus, addr, devad, regnum, value); +} + +static int ls1021a_mdio_reset(struct mii_dev *bus) +{ + struct ls1021a_mdio *priv = bus->priv; + + return priv->realbus->reset(priv->realbus); +} + +static int ls1021a_mdio_init(char *realbusname, char *fakebusname) +{ + struct ls1021a_mdio *lsmdio; + struct mii_dev *bus = mdio_alloc(); + + if (!bus) { + printf("Failed to allocate LS102xA MDIO bus\n"); + return -1; + } + + lsmdio = malloc(sizeof(*lsmdio)); + if (!lsmdio) { + printf("Failed to allocate LS102xA private data\n"); + free(bus); + return -1; + } + + bus->read = ls1021a_mdio_read; + bus->write = ls1021a_mdio_write; + bus->reset = ls1021a_mdio_reset; + sprintf(bus->name, fakebusname); + + lsmdio->realbus = miiphy_get_dev_by_name(realbusname); + + if (!lsmdio->realbus) { + printf("No bus with name %s\n", realbusname); + free(bus); + free(lsmdio); + return -1; + } + + bus->priv = lsmdio; + + return mdio_register(bus); +} + +int board_eth_init(bd_t *bis) +{ + struct fsl_pq_mdio_info mdio_info; + struct tsec_info_struct tsec_info[3]; + int num = 0; + +#ifdef CONFIG_TSEC1 + SET_STD_TSEC_INFO(tsec_info[num], 1); + if (is_serdes_configured(SGMII_TSEC1)) { + puts("eTSEC1 is in sgmii mode\n"); + tsec_info[num].flags |= TSEC_SGMII; + tsec_info[num].mii_devname = "LS1021A_SGMII_MDIO"; + } else { + tsec_info[num].mii_devname = "LS1021A_RGMII_MDIO"; + } + num++; +#endif +#ifdef CONFIG_TSEC2 + SET_STD_TSEC_INFO(tsec_info[num], 2); + if (is_serdes_configured(SGMII_TSEC2)) { + puts("eTSEC2 is in sgmii mode\n"); + tsec_info[num].flags |= TSEC_SGMII; + tsec_info[num].mii_devname = "LS1021A_SGMII_MDIO"; + } else { + tsec_info[num].mii_devname = "LS1021A_RGMII_MDIO"; + } + num++; +#endif +#ifdef CONFIG_TSEC3 + SET_STD_TSEC_INFO(tsec_info[num], 3); + tsec_info[num].mii_devname = "LS1021A_RGMII_MDIO"; + num++; +#endif + if (!num) { + printf("No TSECs initialized\n"); + return 0; + } + +#ifdef CONFIG_FSL_SGMII_RISER + fsl_sgmii_riser_init(tsec_info, num); +#endif + + mdio_info.regs = (struct tsec_mii_mng *)CONFIG_SYS_MDIO_BASE_ADDR; + mdio_info.name = DEFAULT_MII_NAME; + + fsl_pq_mdio_init(bis, &mdio_info); + + /* Register the virtual MDIO front-ends */ + ls1021a_mdio_init(DEFAULT_MII_NAME, "LS1021A_RGMII_MDIO"); + ls1021a_mdio_init(DEFAULT_MII_NAME, "LS1021A_SGMII_MDIO"); + + tsec_eth_init(bis, tsec_info, num); + + return pci_eth_init(bis); +} |
