Add the glue code to allow the px30 variant of the Rockchip gmac
to provide network functionality.

Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

u-boot-imx-20191105
-------------------
i.MX8MN SoC support
ROM API image download support
i.MX8MM enet enabling

Add the missing RGMII PHY modes in which case the MAC has configure its
RGMII settings. The only difference between these modes is the RX and
TX delay configuration. A user might choose any RGMII mode in the device
tree.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Alex Marginean <alexm.osslist@gmail.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

The saved ofnode is used by some PHY drivers to access the device tree
node of the PHY.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Alex Marginean <alexm.osslist@gmail.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

Add more clks for fec_mxc according to Linux Kernel 5.4.0-rc1
drivers/net/ethernet/freescale/fec_main.c.

Since i.MX8MQ not support CLK_CCF, so add a check to restrict
the code only effect when CONFIG_IMX8M and CONFIG_CLK_CCF both defined.

Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Peng Fan <peng.fan@nxp.com>

Make FEC driver could be used by i.MX8M when CONFIG_FEC_MXC defined
in defconfig.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Tested-by: Frieder Schrempf <frieder.schrempf@kontron.de>

Conver TI CPSW driver to use dev/ofnode api.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
[trini: Add <dm/ofnode.h> to provide the prototype to ofnode]
Signed-off-by: Tom Rini <trini@konsulko.com>

Now AM65x CPSW2G driver will disable MAC TX internal delay for PHY
interface mode "rgmii-rxid" which is incorrect. Hence, fix it by keeping
default value (enabled) for MAC TX internal delay when "rgmii-rxid"
interface mode is selected.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>

Now TI CPSW driver will disable MAC TX internal delay for PHY interface
mode "rgmii-rxid" which is incorrect.

Hence, fix it by keeping default value (enabled) for MAC TX internal delay
when "rgmii-rxid" interface mode is selected.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>

This patch adds support for standard Ethernet "max-speed" DT property to
allow PHY link speed limitation.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>