net: phy: Support limiting phy speed in the devicetree
Even when both the ethernet controller and the phy support certain features a board may have additional limitations. Allow specifying it in the devicetree. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
parent
9cbfe615f9
commit
4778c7da37
|
@ -242,6 +242,39 @@ static struct file_operations phydev_ops = {
|
||||||
.lseek = dev_lseek_default,
|
.lseek = dev_lseek_default,
|
||||||
};
|
};
|
||||||
|
|
||||||
|
static void of_set_phy_supported(struct phy_device *phydev)
|
||||||
|
{
|
||||||
|
struct device_node *node = phydev->dev.device_node;
|
||||||
|
u32 max_speed;
|
||||||
|
|
||||||
|
if (!IS_ENABLED(CONFIG_OFDEVICE))
|
||||||
|
return;
|
||||||
|
|
||||||
|
if (!node)
|
||||||
|
return;
|
||||||
|
|
||||||
|
if (!of_property_read_u32(node, "max-speed", &max_speed)) {
|
||||||
|
/*
|
||||||
|
* The default values for phydev->supported are provided by the PHY
|
||||||
|
* driver "features" member, we want to reset to sane defaults first
|
||||||
|
* before supporting higher speeds.
|
||||||
|
*/
|
||||||
|
phydev->supported &= PHY_DEFAULT_FEATURES;
|
||||||
|
|
||||||
|
switch (max_speed) {
|
||||||
|
default:
|
||||||
|
return;
|
||||||
|
|
||||||
|
case SPEED_1000:
|
||||||
|
phydev->supported |= PHY_1000BT_FEATURES;
|
||||||
|
case SPEED_100:
|
||||||
|
phydev->supported |= PHY_100BT_FEATURES;
|
||||||
|
case SPEED_10:
|
||||||
|
phydev->supported |= PHY_10BT_FEATURES;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
static int mdio_bus_probe(struct device_d *_dev)
|
static int mdio_bus_probe(struct device_d *_dev)
|
||||||
{
|
{
|
||||||
struct phy_device *dev = to_phy_device(_dev);
|
struct phy_device *dev = to_phy_device(_dev);
|
||||||
|
@ -275,7 +308,8 @@ static int mdio_bus_probe(struct device_d *_dev)
|
||||||
* a controller will attach, and may modify one
|
* a controller will attach, and may modify one
|
||||||
* or both of these values */
|
* or both of these values */
|
||||||
dev->supported = drv->features;
|
dev->supported = drv->features;
|
||||||
dev->advertising = drv->features;
|
of_set_phy_supported(dev);
|
||||||
|
dev->advertising = dev->supported;
|
||||||
|
|
||||||
dev_add_param_int_ro(&dev->dev, "phy_addr", dev->addr, "%d");
|
dev_add_param_int_ro(&dev->dev, "phy_addr", dev->addr, "%d");
|
||||||
dev_add_param_int_ro(&dev->dev, "phy_id", dev->phy_id, "0x%08x");
|
dev_add_param_int_ro(&dev->dev, "phy_id", dev->phy_id, "0x%08x");
|
||||||
|
|
|
@ -20,18 +20,26 @@
|
||||||
#include <linux/ethtool.h>
|
#include <linux/ethtool.h>
|
||||||
#include <linux/mii.h>
|
#include <linux/mii.h>
|
||||||
|
|
||||||
#define PHY_BASIC_FEATURES (SUPPORTED_10baseT_Half | \
|
#define PHY_DEFAULT_FEATURES (SUPPORTED_Autoneg | \
|
||||||
SUPPORTED_10baseT_Full | \
|
|
||||||
SUPPORTED_100baseT_Half | \
|
|
||||||
SUPPORTED_100baseT_Full | \
|
|
||||||
SUPPORTED_Autoneg | \
|
|
||||||
SUPPORTED_TP | \
|
SUPPORTED_TP | \
|
||||||
SUPPORTED_MII)
|
SUPPORTED_MII)
|
||||||
|
|
||||||
#define PHY_GBIT_FEATURES (PHY_BASIC_FEATURES | \
|
#define PHY_10BT_FEATURES (SUPPORTED_10baseT_Half | \
|
||||||
SUPPORTED_1000baseT_Half | \
|
SUPPORTED_10baseT_Full)
|
||||||
|
|
||||||
|
#define PHY_100BT_FEATURES (SUPPORTED_100baseT_Half | \
|
||||||
|
SUPPORTED_100baseT_Full)
|
||||||
|
|
||||||
|
#define PHY_1000BT_FEATURES (SUPPORTED_1000baseT_Half | \
|
||||||
SUPPORTED_1000baseT_Full)
|
SUPPORTED_1000baseT_Full)
|
||||||
|
|
||||||
|
#define PHY_BASIC_FEATURES (PHY_10BT_FEATURES | \
|
||||||
|
PHY_100BT_FEATURES | \
|
||||||
|
PHY_DEFAULT_FEATURES)
|
||||||
|
|
||||||
|
#define PHY_GBIT_FEATURES (PHY_BASIC_FEATURES | \
|
||||||
|
PHY_1000BT_FEATURES)
|
||||||
|
|
||||||
/* Interface Mode definitions */
|
/* Interface Mode definitions */
|
||||||
typedef enum {
|
typedef enum {
|
||||||
PHY_INTERFACE_MODE_NA,
|
PHY_INTERFACE_MODE_NA,
|
||||||
|
|
Loading…
Reference in New Issue