diff options
| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2023-02-01 22:14:54 +0900 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-02-03 09:19:40 +0000 |
| commit | 04c77d9130b693e56a477364af1e1be4379b1b49 (patch) | |
| tree | ffb4fb4daaa733d00a8b1fb29d0fa76975071fc4 /drivers/net/ethernet/renesas/rswitch.c | |
| parent | 5cb630925b49dd13bf3aa43f299b11615c8fe9cd (diff) | |
net: renesas: rswitch: Add "max-speed" handling
The previous code set the speed by the interface mode of PHY.
Also this hardware has a restriction which cannot change the speed
at runtime. To use other speed, add "max-speed" handling to set
each port's speed if needed.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/renesas/rswitch.c')
| -rw-r--r-- | drivers/net/ethernet/renesas/rswitch.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c index f1a0dd1098f9..50b61a0a7f53 100644 --- a/drivers/net/ethernet/renesas/rswitch.c +++ b/drivers/net/ethernet/renesas/rswitch.c @@ -1072,13 +1072,23 @@ out: static int rswitch_etha_get_params(struct rswitch_device *rdev) { + u32 max_speed; int err; if (!rdev->np_port) return 0; /* ignored */ err = of_get_phy_mode(rdev->np_port, &rdev->etha->phy_interface); + if (err) + return err; + + err = of_property_read_u32(rdev->np_port, "max-speed", &max_speed); + if (!err) { + rdev->etha->speed = max_speed; + return 0; + } + /* if no "max-speed" property, let's use default speed */ switch (rdev->etha->phy_interface) { case PHY_INTERFACE_MODE_MII: rdev->etha->speed = SPEED_100; @@ -1090,11 +1100,10 @@ static int rswitch_etha_get_params(struct rswitch_device *rdev) rdev->etha->speed = SPEED_2500; break; default: - err = -EINVAL; - break; + return -EINVAL; } - return err; + return 0; } static int rswitch_mii_register(struct rswitch_device *rdev) |