30 Nov
2019
30 Nov
'19
2:18 a.m.
On Fri, Oct 25, 2019 at 7:29 PM Michael Walle michael@walle.cc wrote:
Add support for configuring the CLK_25M pin as well as the RGMII I/O voltage by the device tree.
By default the AT803x PHYs outputs the 25MHz clock of the XTAL input. But this output can also be changed by software to other frequencies. This commit introduces a generic way to configure this output.
Also the PHY supports different RGMII I/O voltages: 1.5V, 1.8V and 2.5V. An internal LDO is able to provide 1.5V (default) and 1.8V. The 2.5V option needs an external supply voltage. This commit adds support to switch the internal LDO to 1.8V.
Signed-off-by: Michael Walle michael@walle.cc
Acked-by: Joe Hershberger joe.hershberger@ni.com