diff options
| author | Marek Vasut <marex@denx.de> | 2023-03-06 17:53:50 +0300 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2023-03-30 14:47:04 +0300 |
| commit | 80a34e4008f022a78409657d2b0a5020a472db2e (patch) | |
| tree | 4581b5694ef7fbbc360947d505e7087e9ee114b1 | |
| parent | f9e950b9bfd88ac9b22aaf4e3ff04127bdace287 (diff) | |
| download | u-boot-80a34e4008f022a78409657d2b0a5020a472db2e.tar.xz | |
net: fec_mxc: Add ref clock setup support for i.MX8M Mini/Nano/Plus
The FEC ref clock frequency on i.MX8M Mini/Nano/Plus was so far configured
via ad-hoc board code. Replace that with DM clock clk_set_rate() instead.
This way, the driver claims all its required clock and sets the ref clock
rate, without any need of architecture specific register fiddling.
Signed-off-by: Marek Vasut <marex@denx.de>
| -rw-r--r-- | drivers/net/fec_mxc.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c index 1a6c18a441..7a8577158a 100644 --- a/drivers/net/fec_mxc.c +++ b/drivers/net/fec_mxc.c @@ -1196,6 +1196,33 @@ static void fec_gpio_reset(struct fec_priv *priv) } #endif +static int fecmxc_set_ref_clk(struct clk *clk_ref, phy_interface_t interface) +{ + unsigned int freq; + int ret; + + if (!CONFIG_IS_ENABLED(CLK_CCF)) + return 0; + + if (interface == PHY_INTERFACE_MODE_MII) + freq = 25000000; + else if (interface == PHY_INTERFACE_MODE_RMII) + freq = 50000000; + else if (interface == PHY_INTERFACE_MODE_RGMII || + interface == PHY_INTERFACE_MODE_RGMII_ID || + interface == PHY_INTERFACE_MODE_RGMII_RXID || + interface == PHY_INTERFACE_MODE_RGMII_TXID) + freq = 125000000; + else + return -EINVAL; + + ret = clk_set_rate(clk_ref, freq); + if (ret < 0) + return ret; + + return 0; +} + static int fecmxc_probe(struct udevice *dev) { bool dm_mii_bus = true; @@ -1253,6 +1280,11 @@ static int fecmxc_probe(struct udevice *dev) ret = clk_get_by_name(dev, "enet_clk_ref", &priv->clk_ref); if (!ret) { + ret = fecmxc_set_ref_clk(&priv->clk_ref, + pdata->phy_interface); + if (ret) + return ret; + ret = clk_enable(&priv->clk_ref); if (ret) return ret; |