From 9f800bae01b93b3c35e2442c7317855d0aa53ee9 Mon Sep 17 00:00:00 2001
From: Jan Hoffmann <jan@3e8.eu>
Date: Fri, 27 Mar 2026 17:55:42 +0100
Subject: [PATCH] Improve compatibility with 1G SFP modules

Some modules report a nominal signaling rate of 1200 MBd.
---
 rtlplayground.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rtlplayground.c b/rtlplayground.c
index 358650d..06f7971 100644
--- a/rtlplayground.c
+++ b/rtlplayground.c
@@ -996,7 +996,7 @@ void handle_tx(void)
 
 static inline uint8_t sfp_rate_to_sds_config(register uint8_t rate)
 {
-	if (rate == 0xd)
+	if (rate == 0xc || rate == 0xd)
 		return SDS_1000BX_FIBER;
 	if (rate >= 0x19 && rate <= 0x20)  // Ethernet 2.5 GBit
 		return SDS_HSG;