Add ethernet aliases to CC (Carrier card) description to create a
connection which is used by fdt_fixup_ethernet() for updating
local-mac-address in DT.
On Kria SOM MAC address is read from i2c eeprom at start and based on it
environment variables are created. Without creating aliases U-Boot is not
able to inject local-mac-address DT property and OS won't get the same MAC
address unless another i2c read is happening in OS.
Also aliases are using string not phandle that's why full path has to be
provided but that shouldn't be a big issue because location of ethernet
controller is fixed.
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/6d360e71a0530d201578e27a6997dbd472772e39.1737466907.git.michal.simek@amd.com
Since the zynqmp pinctrl driver now includes support for the
tri-state registers, ensure that the pins needing output-enable
are correctly configured for SOMs.
Currently, there is an issue with the detection of the MMC for
the SOM kv260, resulting in the following error:
ZynqMP> mmc dev 1
Card did not respond to voltage select! : -110
To address this problem, configure the SDIO pins for output-enable
to enable MMC detection.
Signed-off-by: Tejas Bhumkar <tejas.arvind.bhumkar@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/20240321085220.2920792-2-tejas.arvind.bhumkar@amd.com
gpio38 is used in SOM's kv260 to reset the Ethernet PHY.
At present, HW reset is not working properly as Tri-state
is enabled for MIO38, causing inappropriate PHY register reads.
Disabled Tri-state for MIO38 to make HW reset work.
Tri-state disable :
ZynqMP> md 0xFF180208 2
ff180208: 00bfe7a3 00000540
Tri-state enable :
ZynqMP> md 0xFF180208 2
ff180208: 00bfe7e3 00000540
Signed-off-by: Tejas Bhumkar <tejas.arvind.bhumkar@amd.com>
Link: https://lore.kernel.org/r/20231020050622.972750-1-tejas.arvind.bhumkar@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
