X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-redboot.git;a=blobdiff_plain;f=packages%2Fdevs%2Feth%2Farm%2Ftx51karo%2Fv1_0%2Finclude%2Fdevs_eth_arm_tx51.inl;h=ab5e1559ee7a7c76479af15b09feb12a63f47444;hp=ea9ff119e8970c2933f24e0ce812fedc7eb92531;hb=0ea6dbf153abf75a775d9ec630e7c4499e572ac0;hpb=b7d1a6e73d3146a92ed428e662116a383d5e998b

diff --git a/packages/devs/eth/arm/tx51karo/v1_0/include/devs_eth_arm_tx51.inl b/packages/devs/eth/arm/tx51karo/v1_0/include/devs_eth_arm_tx51.inl
index ea9ff119..ab5e1559 100644
--- a/packages/devs/eth/arm/tx51karo/v1_0/include/devs_eth_arm_tx51.inl
+++ b/packages/devs/eth/arm/tx51karo/v1_0/include/devs_eth_arm_tx51.inl
@@ -220,7 +220,12 @@ static void tx51_fec_phy_init(void)
 	if (!gpio_tst_bit(2, 14)) {
 		diag_printf("**Failed to release PHY reset\n");
 	}
-	HAL_DELAY_US(400);
+	/*
+	 * Due to an RC-filter in the PHY RESET line, a minimum
+	 * delay of 535us is required to let the RESET line rise
+	 * above the logic high threshold of the PHY input pin.
+         */
+	HAL_DELAY_US(550);
 
 	/* configure all FEC pins to their required functions */
 	for (i = 0; i < NUM_ELEMS(tx51_fec_gpio_data); i++) {