From: Adrian Schmutzler Date: Fri, 16 Oct 2020 13:36:02 +0200 Subject: mt76: mt7603: allow eeprom sections starting with 7600 Fixes low signal issue for 2.4 GHz for the TP-Link Archer C50 v4. The first two bytes in the eeprom are the chip id. The working devices have 0x7628 there, whereas the non-working devices have 0x7600 there. This chip id gets checked by the function mt7603_check_eeprom() which leads the driver to ignore the contents of the eeprom partition and load default values from otp. The has been manually added based on mt76 PR: https://github.com/openwrt/mt76/pull/442/ Signed-off-by: Adrian Schmutzler diff --git a/package/kernel/mt76/patches/0001-fix-archer-c50-v4.patch b/package/kernel/mt76/patches/0001-fix-archer-c50-v4.patch new file mode 100644 index 0000000000000000000000000000000000000000..29e422dc0c7f3046be0aa761bcfe8db1e298ed88 --- /dev/null +++ b/package/kernel/mt76/patches/0001-fix-archer-c50-v4.patch @@ -0,0 +1,28 @@ +From b0c7f88d900d2986cd2061113201825eda6a6482 Mon Sep 17 00:00:00 2001 +From: Ron Asimi +Date: Wed, 2 Sep 2020 23:18:23 -0400 +Subject: [PATCH] mt7603: allow eeprom sections starting with 7600 + +Fixes low signal issue for 2.4 GHz for the TP-Link Archer C50 v4. +The first two bytes in the eeprom are the chip id. The working +devices have 0x7628 there, whereas the non-working devices have +0x7600 there. This chip id gets checked by the function +mt7603_check_eeprom() which leads the driver to ignore the contents +of the eeprom partition and load default values from otp. + +--- + mt7603/eeprom.c | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/mt7603/eeprom.c b/mt7603/eeprom.c +index 01f1e0da..9d5042af 100644 +--- a/mt7603/eeprom.c ++++ b/mt7603/eeprom.c +@@ -136,6 +136,7 @@ static int mt7603_check_eeprom(struct mt76_dev *dev) + switch (val) { + case 0x7628: + case 0x7603: ++ case 0x7600: + return 0; + default: + return -EINVAL;