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 <[email protected]> --- Cc: "Ariel D'Alessandro" <[email protected]> Cc: "NXP i.MX U-Boot Team" <[email protected]> Cc: Andrey Zhizhikin <[email protected]> Cc: Fabio Estevam <[email protected]> Cc: Joe Hershberger <[email protected]> Cc: Lukasz Majewski <[email protected]> Cc: Marcel Ziswiler <[email protected]> Cc: Marek Vasut <[email protected]> Cc: Michael Trimarchi <[email protected]> Cc: Peng Fan <[email protected]> Cc: Ramon Fried <[email protected]> Cc: Sean Anderson <[email protected]> Cc: Stefano Babic <[email protected]> Cc: Tim Harvey <[email protected]> Cc: Tommaso Merciai <[email protected]> Cc: [email protected] --- V3: New patch --- drivers/net/fec_mxc.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c index 1a6c18a441f..7a8577158ae 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; -- 2.39.1
