mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-02 01:19:49 +00:00
f961b3abf8
We want to be able to have phydev->interface uninitialized during ->probe(). We should assume that phydev->interface is initialized only before ->config(). Signed-off-by: Marek Behún <marek.behun@nic.cz> Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
144 lines
3.2 KiB
C
144 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Xilinx GMII2RGMII phy driver
|
|
*
|
|
* Copyright (C) 2018 Xilinx, Inc.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <log.h>
|
|
#include <phy.h>
|
|
#include <asm/global_data.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#define ZYNQ_GMII2RGMII_REG 0x10
|
|
#define ZYNQ_GMII2RGMII_SPEED_MASK (BMCR_SPEED1000 | BMCR_SPEED100)
|
|
|
|
static int xilinxgmiitorgmii_config(struct phy_device *phydev)
|
|
{
|
|
ofnode node = phy_get_ofnode(phydev);
|
|
struct phy_device *ext_phydev;
|
|
struct ofnode_phandle_args phandle;
|
|
int ext_phyaddr = -1;
|
|
int ret;
|
|
|
|
debug("%s\n", __func__);
|
|
|
|
if (phydev->interface != PHY_INTERFACE_MODE_GMII) {
|
|
printf("Incorrect interface type\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!ofnode_valid(node))
|
|
return -EINVAL;
|
|
|
|
phydev->addr = ofnode_read_u32_default(node, "reg", -1);
|
|
ret = ofnode_parse_phandle_with_args(node, "phy-handle",
|
|
NULL, 0, 0, &phandle);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ext_phyaddr = ofnode_read_u32_default(phandle.node, "reg", -1);
|
|
ext_phydev = phy_find_by_mask(phydev->bus,
|
|
1 << ext_phyaddr,
|
|
PHY_INTERFACE_MODE_RGMII);
|
|
if (!ext_phydev) {
|
|
printf("%s, No external phy device found\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ext_phydev->node = phandle.node;
|
|
phydev->priv = ext_phydev;
|
|
|
|
debug("%s, gmii2rgmmi:0x%x, extphy:0x%x\n", __func__, phydev->addr,
|
|
ext_phyaddr);
|
|
|
|
if (ext_phydev->drv->config)
|
|
ext_phydev->drv->config(ext_phydev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int xilinxgmiitorgmii_extread(struct phy_device *phydev, int addr,
|
|
int devaddr, int regnum)
|
|
{
|
|
struct phy_device *ext_phydev = phydev->priv;
|
|
|
|
debug("%s\n", __func__);
|
|
if (ext_phydev->drv->readext)
|
|
ext_phydev->drv->readext(ext_phydev, addr, devaddr, regnum);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int xilinxgmiitorgmii_extwrite(struct phy_device *phydev, int addr,
|
|
int devaddr, int regnum, u16 val)
|
|
|
|
{
|
|
struct phy_device *ext_phydev = phydev->priv;
|
|
|
|
debug("%s\n", __func__);
|
|
if (ext_phydev->drv->writeext)
|
|
ext_phydev->drv->writeext(ext_phydev, addr, devaddr, regnum,
|
|
val);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int xilinxgmiitorgmii_startup(struct phy_device *phydev)
|
|
{
|
|
u16 val = 0;
|
|
struct phy_device *ext_phydev = phydev->priv;
|
|
|
|
debug("%s\n", __func__);
|
|
ext_phydev->dev = phydev->dev;
|
|
if (ext_phydev->drv->startup)
|
|
ext_phydev->drv->startup(ext_phydev);
|
|
|
|
val = phy_read(phydev, phydev->addr, ZYNQ_GMII2RGMII_REG);
|
|
val &= ~ZYNQ_GMII2RGMII_SPEED_MASK;
|
|
|
|
if (ext_phydev->speed == SPEED_1000)
|
|
val |= BMCR_SPEED1000;
|
|
else if (ext_phydev->speed == SPEED_100)
|
|
val |= BMCR_SPEED100;
|
|
|
|
phy_write(phydev, phydev->addr, ZYNQ_GMII2RGMII_REG, val |
|
|
BMCR_FULLDPLX);
|
|
|
|
phydev->duplex = ext_phydev->duplex;
|
|
phydev->speed = ext_phydev->speed;
|
|
phydev->link = ext_phydev->link;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int xilinxgmiitorgmii_probe(struct phy_device *phydev)
|
|
{
|
|
debug("%s\n", __func__);
|
|
|
|
phydev->flags |= PHY_FLAG_BROKEN_RESET;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct phy_driver gmii2rgmii_driver = {
|
|
.name = "XILINX GMII2RGMII",
|
|
.uid = PHY_GMII2RGMII_ID,
|
|
.mask = 0xffffffff,
|
|
.features = PHY_GBIT_FEATURES,
|
|
.probe = xilinxgmiitorgmii_probe,
|
|
.config = xilinxgmiitorgmii_config,
|
|
.startup = xilinxgmiitorgmii_startup,
|
|
.writeext = xilinxgmiitorgmii_extwrite,
|
|
.readext = xilinxgmiitorgmii_extread,
|
|
};
|
|
|
|
int phy_xilinx_gmii2rgmii_init(void)
|
|
{
|
|
phy_register(&gmii2rgmii_driver);
|
|
|
|
return 0;
|
|
}
|