diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/macb.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/net/macb.c b/drivers/net/macb.c index b7f404e8571..c5560a71114 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -497,6 +497,41 @@ static int macb_phy_find(struct macb_device *macb, const char *name) #ifdef CONFIG_DM_ETH int __weak macb_linkspd_cb(struct udevice *dev, unsigned int speed) { +#ifdef CONFIG_CLK + struct clk tx_clk; + ulong rate; + int ret; + + /* + * "tx_clk" is an optional clock source for MACB. + * Ignore if it does not exist in DT. + */ + ret = clk_get_by_name(dev, "tx_clk", &tx_clk); + if (ret) + return 0; + + switch (speed) { + case _10BASET: + rate = 2500000; /* 2.5 MHz */ + break; + case _100BASET: + rate = 25000000; /* 25 MHz */ + break; + case _1000BASET: + rate = 125000000; /* 125 MHz */ + break; + default: + /* does not change anything */ + return 0; + } + + if (tx_clk.dev) { + ret = clk_set_rate(&tx_clk, rate); + if (ret) + return ret; + } +#endif + return 0; } #else |