mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-27 16:02:25 -04:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
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>
Link: https://lore.kernel.org/r/20250105162630.243899-1-francesco@valla.it
Signed-off-by: Nishanth Menon <nm@ti.com>
This commit is contained in:
Francesco Valla
2025-01-05 17:26:30 +01:00
committed by Nishanth Menon
parent e2b6918043
commit eb2008a8fc
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts
View File

@@ -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>;
};
};