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net/designware: add support of max-speed device tree property

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This property allows to specify fastest connection mode supported by
the MAC (as opposed to features of the phy).

There are situations when phy may handle faster modes than the
MAC (or even it's particular implementation or even due to CPU being too
slow).

This property is a standard one in Linux kernel these days and some
boards do already use it in their device tree descriptions.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Sonic Zhang <sonic.zhang@analog.com>
cc: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Alexey Brodkin 2016-01-13 16:59:37 +03:00 committed by Joe Hershberger
parent b884c3fe63
commit 6968ec9216
2 changed files with 14 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
drivers/net/designware.c
View file

@ -406,7 +406,7 @@ static int _dw_free_pkt(struct dw_eth_dev *priv)
static int dw_phy_init(struct dw_eth_dev *priv, void *dev)
{
struct phy_device *phydev;
int mask = 0xffffffff;
int mask = 0xffffffff, ret;
#ifdef CONFIG_PHY_ADDR
mask = 1 << CONFIG_PHY_ADDR;
@ -419,6 +419,11 @@ static int dw_phy_init(struct dw_eth_dev *priv, void *dev)
phy_connect_dev(phydev, dev);
phydev->supported &= PHY_GBIT_FEATURES;
if (priv->max_speed) {
ret = phy_set_supported(phydev, priv->max_speed);
if (ret)
return ret;
}
phydev->advertising = phydev->supported;
priv->phydev = phydev;
@ -601,6 +606,7 @@ static int designware_eth_probe(struct udevice *dev)
priv->mac_regs_p = (struct eth_mac_regs *)iobase;
priv->dma_regs_p = (struct eth_dma_regs *)(iobase + DW_DMA_BASE_OFFSET);
priv->interface = pdata->phy_interface;
priv->max_speed = pdata->max_speed;
dw_mdio_init(dev->name, priv->mac_regs_p);
priv->bus = miiphy_get_dev_by_name(dev->name);
@ -635,6 +641,7 @@ static int designware_eth_ofdata_to_platdata(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_platdata(dev);
const char *phy_mode;
const fdt32_t *cell;
pdata->iobase = dev_get_addr(dev);
pdata->phy_interface = -1;
@ -646,6 +653,11 @@ static int designware_eth_ofdata_to_platdata(struct udevice *dev)
return -EINVAL;
}
pdata->max_speed = 0;
cell = fdt_getprop(gd->fdt_blob, dev->of_offset, "max-speed", NULL);
if (cell)
pdata->max_speed = fdt32_to_cpu(*cell);
return 0;
}

1
drivers/net/designware.h
View file

@ -223,6 +223,7 @@ struct dw_eth_dev {
char rxbuffs[RX_TOTAL_BUFSIZE] __aligned(ARCH_DMA_MINALIGN);
u32 interface;
u32 max_speed;
u32 tx_currdescnum;
u32 rx_currdescnum;