diff options
| author | Tejas Bhumkar <tejas.arvind.bhumkar@amd.com> | 2023-10-20 10:36:22 +0530 |
|---|---|---|
| committer | Michal Simek <michal.simek@amd.com> | 2023-11-07 13:47:09 +0100 |
| commit | 820bad0271939d93c2651b29f7ae8adb665a4dfe (patch) | |
| tree | e77dee394e43cb980276342f67ef5270a058da4c /drivers/usb/cdns3/core.c | |
| parent | 3e891448920a8d53205d05e36372d65ae1289734 (diff) | |
arm64: zynqmp: Disable Tri-state for MIO38 Pin
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>
Diffstat (limited to 'drivers/usb/cdns3/core.c')
0 files changed, 0 insertions, 0 deletions