qualcommbe: ipq95xx: pcs: fix USXGMII link-up failure

USXGMII link-up may fail due to too short delay after PLL reset.
Increase the delay to fix this.

Signed-off-by: Mantas Pucka <mantas@8devices.com>
Link: https://github.com/openwrt/openwrt/pull/18459
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

diff --git a/target/linux/qualcommbe/patches-6.6/702-net-pcs-ipq-uniphy-fix-USXGMII-link-up-failure.patch b/target/linux/qualcommbe/patches-6.6/702-net-pcs-ipq-uniphy-fix-USXGMII-link-up-failure.patch
new file mode 100644 (file)
index 0000000..46a1b5f
--- /dev/null
+++ b/target/linux/qualcommbe/patches-6.6/702-net-pcs-ipq-uniphy-fix-USXGMII-link-up-failure.patch
@@ -0,0 +1,24 @@
+From d75aa2977a42b97d052ed0984fb305a853f55d49 Mon Sep 17 00:00:00 2001
+From: Mantas Pucka <mantas@8devices.com>
+Date: Wed, 9 Apr 2025 11:16:49 +0300
+Subject: [PATCH] net: pcs: ipq-uniphy: fix USXGMII link-up failure
+
+USXGMII link-up may fail due to too short delay after PLL reset.
+Increase the delay to fix this.
+
+Signed-off-by: Mantas Pucka <mantas@8devices.com>
+---
+ drivers/net/pcs/pcs-qcom-ipq-uniphy.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/net/pcs/pcs-qcom-ipq-uniphy.c
++++ b/drivers/net/pcs/pcs-qcom-ipq-uniphy.c
+@@ -490,7 +490,7 @@ static int ipq_unipcs_config_mode(struct
+ 
+       /* PCS PLL reset */
+       ipq_unipcs_reg_modify32(qunipcs, PCS_PLL_RESET, PCS_ANA_SW_RESET, 0);
+-      fsleep(10000);
++      fsleep(20000);
+       ipq_unipcs_reg_modify32(qunipcs, PCS_PLL_RESET,
+                               PCS_ANA_SW_RESET, PCS_ANA_SW_RESET);
+