diff mbox series

arm64: dts: ti: k3-am625-beagleplay: fix DP83TD510E reset time

Message ID 20250105162630.243899-1-francesco@valla.it (mailing list archive)
State New
Headers show
Series arm64: dts: ti: k3-am625-beagleplay: fix DP83TD510E reset time | expand

Commit Message

Francesco Valla Jan. 5, 2025, 4:26 p.m. UTC 
The reset deassert time for the DP83TD510E is incorrectly set to
60000us, while the datasheet states that the minimum time required
after an hard reset is 30us (while 60ms is the time required for the
Power-On Reset after supply stabilization). The error probably arose
from the two timings being indicated by the same symbol (T2).

Lower the required time to 35us, aligning it to the value required for
the PHY to complete the reset AND to be able to accept the RMII master
clock. This saves ~60ms on boot if the MDIO driver is built-in.

Signed-off-by: Francesco Valla <francesco@valla.it>
---
 arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts b/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts
index ee96f4f6deb0..75c80290b12a 100644
--- a/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts
+++ b/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts
@@ -610,7 +610,7 @@  cpsw3g_phy1: ethernet-phy@1 {
 		reg = <1>;
 		reset-gpios = <&main_gpio1 5 GPIO_ACTIVE_LOW>;
 		reset-assert-us = <25>;
-		reset-deassert-us = <60000>; /* T2 */
+		reset-deassert-us = <35>;
 	};
 };