summaryrefslogtreecommitdiff
path: root/drivers/net/designware.c
diff options
context:
space:
mode:
authorAlexey Brodkin <Alexey.Brodkin@synopsys.com>2016-01-13 16:59:37 +0300
committerJoe Hershberger <joe.hershberger@ni.com>2016-01-28 12:32:44 -0600
commit6968ec921634b69f700f3e4ccdc35527160ac77a (patch)
treeae8323d4449222f52c4716086a9b3b87078cb3a9 /drivers/net/designware.c
parentb884c3fe6392cd1f578db9350eb7c49eda94ff53 (diff)
net/designware: add support of max-speed device tree property
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>
Diffstat (limited to 'drivers/net/designware.c')
-rw-r--r--drivers/net/designware.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/net/designware.c b/drivers/net/designware.c
index f28e825bfc..f1bcc92a81 100644
--- a/drivers/net/designware.c
+++ b/drivers/net/designware.c
@@ -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;
}