mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 08:57:58 +00:00
7c2d5d1642
After the discussion here: https://lore.kernel.org/netdev/20210603143453.if7hgifupx5k433b@pali/ which resulted in this patch: https://patchwork.kernel.org/project/netdevbpf/patch/20210704134325.24842-1-pali@kernel.org/ and many other discussions before it, notably: https://patchwork.kernel.org/project/linux-arm-kernel/patch/1512016235-15909-1-git-send-email-Bhaskar.Upadhaya@nxp.com/ it became apparent that nobody really knows what "SGMII 2500" is. Certainly, Freescale/NXP hardware engineers name this protocol "SGMII 2500" in the reference manuals, but the PCS devices do not support any "SGMII" specific features when operating at the speed of 2500 Mbps, no in-band autoneg and no speed change via symbol replication . So that leaves a fixed speed of 2500 Mbps using a coding of 8b/10b with a SERDES lane frequency of 3.125 GHz. In fact, "SGMII 2500 without in-band autoneg and at a fixed speed" is indistinguishable from "2500base-x without in-band autoneg", which is precisely what these NXP devices support. So it just appears that "SGMII 2500" is an unclear name with no clear definition that stuck. As such, in the Linux kernel, the drivers which use this SERDES protocol use the 2500base-x phy-mode. This patch converts U-Boot to use 2500base-x too, or at least, as much as it can. Note that I would have really liked to delete PHY_INTERFACE_MODE_SGMII_2500 completely, but the mvpp2 driver seems to even distinguish between SGMII 2500 and 2500base-X. Namely, it enables in-band autoneg for one but not the other, and forces flow control for one but not the other. This goes back to the idea that maybe 2500base-X is a fiber protocol and SGMII-2500 is an MII protocol (connects a MAC to a PHY such as Aquantia), but the two are practically indistinguishable through everything except use case. NXP devices can support both use cases through an identical configuration, for example RX flow control can be unconditionally enabled in order to support rate adaptation performed by an Aquantia PHY. At least I can find no indication in online documents published by Cisco which would point towards "SGMII-2500" being an actual standard with an actual definition, so I cannot say "yes, NXP devices support it". Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
499 lines
12 KiB
C
499 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2015 Freescale Semiconductor, Inc.
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* Copyright 2019 NXP
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*/
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#include <common.h>
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#include <log.h>
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#include <net.h>
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#include <asm/io.h>
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#include <netdev.h>
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#include <fdt_support.h>
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#include <fm_eth.h>
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#include <fsl_mdio.h>
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#include <fsl_dtsec.h>
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#include <linux/libfdt.h>
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#include <malloc.h>
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#include <asm/arch/fsl_serdes.h>
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#include "../common/qixis.h"
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#include "../common/fman.h"
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#include "ls1043aqds_qixis.h"
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#define EMI_NONE 0xFF
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#define EMI1_RGMII1 0
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#define EMI1_RGMII2 1
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#define EMI1_SLOT1 2
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#define EMI1_SLOT2 3
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#define EMI1_SLOT3 4
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#define EMI1_SLOT4 5
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#define EMI2 6
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static int mdio_mux[NUM_FM_PORTS];
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static const char * const mdio_names[] = {
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"LS1043AQDS_MDIO_RGMII1",
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"LS1043AQDS_MDIO_RGMII2",
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"LS1043AQDS_MDIO_SLOT1",
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"LS1043AQDS_MDIO_SLOT2",
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"LS1043AQDS_MDIO_SLOT3",
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"LS1043AQDS_MDIO_SLOT4",
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"NULL",
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};
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/* Map SerDes1 4 lanes to default slot, will be initialized dynamically */
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static u8 lane_to_slot[] = {1, 2, 3, 4};
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static const char *ls1043aqds_mdio_name_for_muxval(u8 muxval)
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{
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return mdio_names[muxval];
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}
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struct mii_dev *mii_dev_for_muxval(u8 muxval)
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{
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struct mii_dev *bus;
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const char *name;
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if (muxval > EMI2)
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return NULL;
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name = ls1043aqds_mdio_name_for_muxval(muxval);
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if (!name) {
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printf("No bus for muxval %x\n", muxval);
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return NULL;
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}
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bus = miiphy_get_dev_by_name(name);
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if (!bus) {
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printf("No bus by name %s\n", name);
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return NULL;
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}
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return bus;
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}
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struct ls1043aqds_mdio {
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u8 muxval;
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struct mii_dev *realbus;
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};
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static void ls1043aqds_mux_mdio(u8 muxval)
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{
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u8 brdcfg4;
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if (muxval < 7) {
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brdcfg4 = QIXIS_READ(brdcfg[4]);
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brdcfg4 &= ~BRDCFG4_EMISEL_MASK;
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brdcfg4 |= (muxval << BRDCFG4_EMISEL_SHIFT);
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QIXIS_WRITE(brdcfg[4], brdcfg4);
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}
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}
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static int ls1043aqds_mdio_read(struct mii_dev *bus, int addr, int devad,
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int regnum)
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{
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struct ls1043aqds_mdio *priv = bus->priv;
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ls1043aqds_mux_mdio(priv->muxval);
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return priv->realbus->read(priv->realbus, addr, devad, regnum);
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}
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static int ls1043aqds_mdio_write(struct mii_dev *bus, int addr, int devad,
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int regnum, u16 value)
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{
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struct ls1043aqds_mdio *priv = bus->priv;
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ls1043aqds_mux_mdio(priv->muxval);
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return priv->realbus->write(priv->realbus, addr, devad,
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regnum, value);
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}
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static int ls1043aqds_mdio_reset(struct mii_dev *bus)
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{
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struct ls1043aqds_mdio *priv = bus->priv;
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return priv->realbus->reset(priv->realbus);
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}
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static int ls1043aqds_mdio_init(char *realbusname, u8 muxval)
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{
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struct ls1043aqds_mdio *pmdio;
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struct mii_dev *bus = mdio_alloc();
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if (!bus) {
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printf("Failed to allocate ls1043aqds MDIO bus\n");
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return -1;
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}
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pmdio = malloc(sizeof(*pmdio));
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if (!pmdio) {
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printf("Failed to allocate ls1043aqds private data\n");
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free(bus);
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return -1;
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}
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bus->read = ls1043aqds_mdio_read;
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bus->write = ls1043aqds_mdio_write;
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bus->reset = ls1043aqds_mdio_reset;
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strcpy(bus->name, ls1043aqds_mdio_name_for_muxval(muxval));
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pmdio->realbus = miiphy_get_dev_by_name(realbusname);
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if (!pmdio->realbus) {
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printf("No bus with name %s\n", realbusname);
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free(bus);
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free(pmdio);
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return -1;
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}
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pmdio->muxval = muxval;
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bus->priv = pmdio;
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return mdio_register(bus);
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}
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void board_ft_fman_fixup_port(void *fdt, char *compat, phys_addr_t addr,
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enum fm_port port, int offset)
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{
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struct fixed_link f_link;
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if (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_SGMII) {
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if (port == FM1_DTSEC9) {
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fdt_set_phy_handle(fdt, compat, addr,
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"sgmii-riser-s1-p1");
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} else if (port == FM1_DTSEC2) {
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fdt_set_phy_handle(fdt, compat, addr,
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"sgmii-riser-s2-p1");
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} else if (port == FM1_DTSEC5) {
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fdt_set_phy_handle(fdt, compat, addr,
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"sgmii-riser-s3-p1");
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} else if (port == FM1_DTSEC6) {
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fdt_set_phy_handle(fdt, compat, addr,
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"sgmii-riser-s4-p1");
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}
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} else if (fm_info_get_enet_if(port) ==
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PHY_INTERFACE_MODE_2500BASEX) {
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/* 2.5G SGMII interface */
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f_link.phy_id = cpu_to_fdt32(port);
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f_link.duplex = cpu_to_fdt32(1);
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f_link.link_speed = cpu_to_fdt32(1000);
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f_link.pause = 0;
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f_link.asym_pause = 0;
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/* no PHY for 2.5G SGMII */
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fdt_delprop(fdt, offset, "phy-handle");
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fdt_setprop(fdt, offset, "fixed-link", &f_link, sizeof(f_link));
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fdt_setprop_string(fdt, offset, "phy-connection-type",
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"2500base-x");
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} else if (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_QSGMII) {
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switch (mdio_mux[port]) {
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case EMI1_SLOT1:
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switch (port) {
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case FM1_DTSEC1:
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fdt_set_phy_handle(fdt, compat, addr,
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"qsgmii-s1-p1");
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break;
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case FM1_DTSEC2:
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fdt_set_phy_handle(fdt, compat, addr,
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"qsgmii-s1-p2");
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break;
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case FM1_DTSEC5:
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fdt_set_phy_handle(fdt, compat, addr,
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"qsgmii-s1-p3");
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break;
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case FM1_DTSEC6:
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fdt_set_phy_handle(fdt, compat, addr,
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"qsgmii-s1-p4");
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break;
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default:
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break;
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}
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break;
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case EMI1_SLOT2:
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switch (port) {
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case FM1_DTSEC1:
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fdt_set_phy_handle(fdt, compat, addr,
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"qsgmii-s2-p1");
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break;
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case FM1_DTSEC2:
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fdt_set_phy_handle(fdt, compat, addr,
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"qsgmii-s2-p2");
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break;
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case FM1_DTSEC5:
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fdt_set_phy_handle(fdt, compat, addr,
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"qsgmii-s2-p3");
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break;
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case FM1_DTSEC6:
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fdt_set_phy_handle(fdt, compat, addr,
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"qsgmii-s2-p4");
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break;
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default:
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break;
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}
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break;
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default:
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break;
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}
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fdt_delprop(fdt, offset, "phy-connection-type");
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fdt_setprop_string(fdt, offset, "phy-connection-type",
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"qsgmii");
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} else if (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_XGMII &&
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port == FM1_10GEC1) {
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/* 10GBase-R interface */
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f_link.phy_id = cpu_to_fdt32(port);
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f_link.duplex = cpu_to_fdt32(1);
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f_link.link_speed = cpu_to_fdt32(10000);
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f_link.pause = 0;
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f_link.asym_pause = 0;
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/* no PHY for 10GBase-R */
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fdt_delprop(fdt, offset, "phy-handle");
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fdt_setprop(fdt, offset, "fixed-link", &f_link, sizeof(f_link));
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fdt_setprop_string(fdt, offset, "phy-connection-type", "xgmii");
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}
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}
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void fdt_fixup_board_enet(void *fdt)
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{
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int i;
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struct ccsr_gur *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
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u32 srds_s1;
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srds_s1 = in_be32(&gur->rcwsr[4]) &
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FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_MASK;
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srds_s1 >>= FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT;
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for (i = FM1_DTSEC1; i < NUM_FM_PORTS; i++) {
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switch (fm_info_get_enet_if(i)) {
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case PHY_INTERFACE_MODE_SGMII:
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case PHY_INTERFACE_MODE_QSGMII:
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switch (mdio_mux[i]) {
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case EMI1_SLOT1:
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fdt_status_okay_by_alias(fdt, "emi1-slot1");
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break;
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case EMI1_SLOT2:
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fdt_status_okay_by_alias(fdt, "emi1-slot2");
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break;
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case EMI1_SLOT3:
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fdt_status_okay_by_alias(fdt, "emi1-slot3");
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break;
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case EMI1_SLOT4:
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fdt_status_okay_by_alias(fdt, "emi1-slot4");
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break;
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default:
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break;
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}
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break;
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case PHY_INTERFACE_MODE_XGMII:
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break;
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default:
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break;
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}
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}
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}
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int board_eth_init(struct bd_info *bis)
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{
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#ifdef CONFIG_FMAN_ENET
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int i, idx, lane, slot, interface;
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struct memac_mdio_info dtsec_mdio_info;
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struct memac_mdio_info tgec_mdio_info;
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struct ccsr_gur *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
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u32 srds_s1;
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srds_s1 = in_be32(&gur->rcwsr[4]) &
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FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_MASK;
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srds_s1 >>= FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT;
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/* Initialize the mdio_mux array so we can recognize empty elements */
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for (i = 0; i < NUM_FM_PORTS; i++)
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mdio_mux[i] = EMI_NONE;
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dtsec_mdio_info.regs =
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(struct memac_mdio_controller *)CONFIG_SYS_FM1_DTSEC_MDIO_ADDR;
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dtsec_mdio_info.name = DEFAULT_FM_MDIO_NAME;
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/* Register the 1G MDIO bus */
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fm_memac_mdio_init(bis, &dtsec_mdio_info);
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tgec_mdio_info.regs =
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(struct memac_mdio_controller *)CONFIG_SYS_FM1_TGEC_MDIO_ADDR;
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tgec_mdio_info.name = DEFAULT_FM_TGEC_MDIO_NAME;
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/* Register the 10G MDIO bus */
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fm_memac_mdio_init(bis, &tgec_mdio_info);
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/* Register the muxing front-ends to the MDIO buses */
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ls1043aqds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_RGMII1);
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ls1043aqds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_RGMII2);
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ls1043aqds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_SLOT1);
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ls1043aqds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_SLOT2);
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ls1043aqds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_SLOT3);
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ls1043aqds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_SLOT4);
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ls1043aqds_mdio_init(DEFAULT_FM_TGEC_MDIO_NAME, EMI2);
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/* Set the two on-board RGMII PHY address */
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fm_info_set_phy_address(FM1_DTSEC3, RGMII_PHY1_ADDR);
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fm_info_set_phy_address(FM1_DTSEC4, RGMII_PHY2_ADDR);
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switch (srds_s1) {
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case 0x2555:
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/* 2.5G SGMII on lane A, MAC 9 */
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fm_info_set_phy_address(FM1_DTSEC9, 9);
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break;
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case 0x4555:
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case 0x4558:
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/* QSGMII on lane A, MAC 1/2/5/6 */
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fm_info_set_phy_address(FM1_DTSEC1,
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QSGMII_CARD_PORT1_PHY_ADDR_S1);
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fm_info_set_phy_address(FM1_DTSEC2,
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QSGMII_CARD_PORT2_PHY_ADDR_S1);
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fm_info_set_phy_address(FM1_DTSEC5,
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QSGMII_CARD_PORT3_PHY_ADDR_S1);
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fm_info_set_phy_address(FM1_DTSEC6,
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QSGMII_CARD_PORT4_PHY_ADDR_S1);
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break;
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case 0x1355:
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/* SGMII on lane B, MAC 2*/
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fm_info_set_phy_address(FM1_DTSEC2, SGMII_CARD_PORT1_PHY_ADDR);
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break;
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case 0x2355:
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/* 2.5G SGMII on lane A, MAC 9 */
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fm_info_set_phy_address(FM1_DTSEC9, 9);
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/* SGMII on lane B, MAC 2*/
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fm_info_set_phy_address(FM1_DTSEC2, SGMII_CARD_PORT1_PHY_ADDR);
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break;
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case 0x3335:
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/* SGMII on lane C, MAC 5 */
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fm_info_set_phy_address(FM1_DTSEC5, SGMII_CARD_PORT1_PHY_ADDR);
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case 0x3355:
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case 0x3358:
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/* SGMII on lane B, MAC 2 */
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fm_info_set_phy_address(FM1_DTSEC2, SGMII_CARD_PORT1_PHY_ADDR);
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case 0x3555:
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case 0x3558:
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/* SGMII on lane A, MAC 9 */
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fm_info_set_phy_address(FM1_DTSEC9, SGMII_CARD_PORT1_PHY_ADDR);
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break;
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case 0x1455:
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/* QSGMII on lane B, MAC 1/2/5/6 */
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fm_info_set_phy_address(FM1_DTSEC1,
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QSGMII_CARD_PORT1_PHY_ADDR_S2);
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fm_info_set_phy_address(FM1_DTSEC2,
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QSGMII_CARD_PORT2_PHY_ADDR_S2);
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fm_info_set_phy_address(FM1_DTSEC5,
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QSGMII_CARD_PORT3_PHY_ADDR_S2);
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fm_info_set_phy_address(FM1_DTSEC6,
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QSGMII_CARD_PORT4_PHY_ADDR_S2);
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break;
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case 0x2455:
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/* 2.5G SGMII on lane A, MAC 9 */
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fm_info_set_phy_address(FM1_DTSEC9, 9);
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/* QSGMII on lane B, MAC 1/2/5/6 */
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fm_info_set_phy_address(FM1_DTSEC1,
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QSGMII_CARD_PORT1_PHY_ADDR_S2);
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fm_info_set_phy_address(FM1_DTSEC2,
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QSGMII_CARD_PORT2_PHY_ADDR_S2);
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fm_info_set_phy_address(FM1_DTSEC5,
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QSGMII_CARD_PORT3_PHY_ADDR_S2);
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fm_info_set_phy_address(FM1_DTSEC6,
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QSGMII_CARD_PORT4_PHY_ADDR_S2);
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break;
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case 0x2255:
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/* 2.5G SGMII on lane A, MAC 9 */
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fm_info_set_phy_address(FM1_DTSEC9, 9);
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/* 2.5G SGMII on lane B, MAC 2 */
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fm_info_set_phy_address(FM1_DTSEC2, 2);
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break;
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case 0x3333:
|
|
/* SGMII on lane A/B/C/D, MAC 9/2/5/6 */
|
|
fm_info_set_phy_address(FM1_DTSEC9,
|
|
SGMII_CARD_PORT1_PHY_ADDR);
|
|
fm_info_set_phy_address(FM1_DTSEC2,
|
|
SGMII_CARD_PORT1_PHY_ADDR);
|
|
fm_info_set_phy_address(FM1_DTSEC5,
|
|
SGMII_CARD_PORT1_PHY_ADDR);
|
|
fm_info_set_phy_address(FM1_DTSEC6,
|
|
SGMII_CARD_PORT1_PHY_ADDR);
|
|
break;
|
|
default:
|
|
printf("Invalid SerDes protocol 0x%x for LS1043AQDS\n",
|
|
srds_s1);
|
|
break;
|
|
}
|
|
|
|
for (i = FM1_DTSEC1; i < FM1_DTSEC1 + CONFIG_SYS_NUM_FM1_DTSEC; i++) {
|
|
idx = i - FM1_DTSEC1;
|
|
interface = fm_info_get_enet_if(i);
|
|
switch (interface) {
|
|
case PHY_INTERFACE_MODE_SGMII:
|
|
case PHY_INTERFACE_MODE_2500BASEX:
|
|
case PHY_INTERFACE_MODE_QSGMII:
|
|
if (interface == PHY_INTERFACE_MODE_SGMII) {
|
|
lane = serdes_get_first_lane(FSL_SRDS_1,
|
|
SGMII_FM1_DTSEC1 + idx);
|
|
} else if (interface == PHY_INTERFACE_MODE_2500BASEX) {
|
|
lane = serdes_get_first_lane(FSL_SRDS_1,
|
|
SGMII_2500_FM1_DTSEC1 + idx);
|
|
} else {
|
|
lane = serdes_get_first_lane(FSL_SRDS_1,
|
|
QSGMII_FM1_A);
|
|
}
|
|
|
|
if (lane < 0)
|
|
break;
|
|
|
|
slot = lane_to_slot[lane];
|
|
debug("FM1@DTSEC%u expects SGMII in slot %u\n",
|
|
idx + 1, slot);
|
|
if (QIXIS_READ(present2) & (1 << (slot - 1)))
|
|
fm_disable_port(i);
|
|
|
|
switch (slot) {
|
|
case 1:
|
|
mdio_mux[i] = EMI1_SLOT1;
|
|
fm_info_set_mdio(i, mii_dev_for_muxval(
|
|
mdio_mux[i]));
|
|
break;
|
|
case 2:
|
|
mdio_mux[i] = EMI1_SLOT2;
|
|
fm_info_set_mdio(i, mii_dev_for_muxval(
|
|
mdio_mux[i]));
|
|
break;
|
|
case 3:
|
|
mdio_mux[i] = EMI1_SLOT3;
|
|
fm_info_set_mdio(i, mii_dev_for_muxval(
|
|
mdio_mux[i]));
|
|
break;
|
|
case 4:
|
|
mdio_mux[i] = EMI1_SLOT4;
|
|
fm_info_set_mdio(i, mii_dev_for_muxval(
|
|
mdio_mux[i]));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case PHY_INTERFACE_MODE_RGMII:
|
|
case PHY_INTERFACE_MODE_RGMII_TXID:
|
|
case PHY_INTERFACE_MODE_RGMII_RXID:
|
|
case PHY_INTERFACE_MODE_RGMII_ID:
|
|
if (i == FM1_DTSEC3)
|
|
mdio_mux[i] = EMI1_RGMII1;
|
|
else if (i == FM1_DTSEC4)
|
|
mdio_mux[i] = EMI1_RGMII2;
|
|
fm_info_set_mdio(i, mii_dev_for_muxval(mdio_mux[i]));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
cpu_eth_init(bis);
|
|
#endif /* CONFIG_FMAN_ENET */
|
|
|
|
return pci_eth_init(bis);
|
|
}
|