[PATCH 06/12] arm64: zynqmp: Revert usb node drive strength and slew rate for zcu106
Michal Simek
michal.simek at amd.com
Tue Sep 2 10:53:28 CEST 2025
From: Radhey Shyam Pandey <radhey.shyam.pandey at amd.com>
On a few zcu106 boards USB devices (Dell MS116 USB Optical Mouse, Dell USB
Entry Keyboard) are not enumerated on linux boot due to commit
'b8745e7eb488 ("arm64: zynqmp: Fix usb node drive strength and slew
rate")'.
To fix it as a workaround revert to working version and then investigate
at board level why drive strength from 12mA to 4mA and slew from fast to
slow is not working.
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey at amd.com>
Signed-off-by: Michal Simek <michal.simek at amd.com>
---
arch/arm/dts/zynqmp-zcu106-revA.dts | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/dts/zynqmp-zcu106-revA.dts b/arch/arm/dts/zynqmp-zcu106-revA.dts
index ba3989cad3e4..a19d78e5546e 100644
--- a/arch/arm/dts/zynqmp-zcu106-revA.dts
+++ b/arch/arm/dts/zynqmp-zcu106-revA.dts
@@ -827,8 +827,8 @@
pins = "MIO54", "MIO56", "MIO57", "MIO58", "MIO59",
"MIO60", "MIO61", "MIO62", "MIO63";
bias-disable;
- drive-strength = <4>;
- slew-rate = <SLEW_RATE_SLOW>;
+ drive-strength = <12>;
+ slew-rate = <SLEW_RATE_FAST>;
};
};
--
2.43.0
More information about the U-Boot
mailing list