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mt76: mt7603: add additional EEPROM chip ID (#2133)

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Some newer MT7628 based routers (notably the TP-Link Archer C50 v4) are
shipped with a chip-id of 0x7600 in the on-flash EEPROM. Add this as a
possible valid ID.

This fixes unstable WiFi on some units of the TP-Link Archer C50 v4.
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David Bauer 2020-10-17 13:58:45 +02:00 committed by GitHub
parent b6096523c9
commit 88ec9cbedf
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patches/openwrt/0017-mt76-mt7603-add-additional-EEPROM-chip-ID.patch Normal file
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@ -0,0 +1,46 @@
From: David Bauer <mail@david-bauer.net>
Date: Thu, 15 Oct 2020 22:42:54 +0200
Subject: mt76: mt7603: add additional EEPROM chip ID
Some newer MT7628 based routers (notably the TP-Link Archer C50 v4) are
shipped with a chip-id of 0x7600 in the on-flash EEPROM. Add this as a
possible valid ID.
Ref: https://bugs.openwrt.org/index.php?do=details&task_id=2781
Suggested-by: Ron Asimi <ron.asimi@gmail.com>
Signed-off-by: David Bauer <mail@david-bauer.net>
diff --git a/package/kernel/mt76/patches/002-mt76-mt7603-add-additional-EEPROM-chip-ID.patch b/package/kernel/mt76/patches/002-mt76-mt7603-add-additional-EEPROM-chip-ID.patch
new file mode 100644
index 0000000000000000000000000000000000000000..c749aa403f5940c19e5f580f461874b708b41f66
--- /dev/null
+++ b/package/kernel/mt76/patches/002-mt76-mt7603-add-additional-EEPROM-chip-ID.patch
@@ -0,0 +1,27 @@
+From 6b51340cdc32b1ba75163faaa8592feaeb4bddec Mon Sep 17 00:00:00 2001
+From: David Bauer <mail@david-bauer.net>
+Date: Sat, 10 Oct 2020 00:36:02 +0200
+Subject: [PATCH] mt76: mt7603: add additional EEPROM chip ID
+
+Some newer MT7628 based routers (notably the TP-Link Archer C50 v4) are
+shipped with a chip-id of 0x7600 in the on-flash EEPROM. Add this as a
+possible valid ID.
+
+Ref: https://bugs.openwrt.org/index.php?do=details&task_id=2781
+
+Suggested-by: Ron Asimi <ron.asimi@gmail.com>
+Signed-off-by: David Bauer <mail@david-bauer.net>
+---
+ mt7603/eeprom.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/mt7603/eeprom.c
++++ b/mt7603/eeprom.c
+@@ -136,6 +136,7 @@ static int mt7603_check_eeprom(struct mt
+ switch (val) {
+ case 0x7628:
+ case 0x7603:
++ case 0x7600:
+ return 0;
+ default:
+ return -EINVAL;