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From:   Felix Fietkau <nbd@nbd.name>
To:     linux-wireless@vger.kernel.org
Subject: [PATCH 2/2] mt76: mt76x2: disable merge of OTP ROM data by default
Date:   Mon,  6 Apr 2020 14:04:59 +0200
Message-Id: <20200406120459.61713-2-nbd@nbd.name>
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The reference driver does not seem to enable it by default, only under certain
conditions, e.g. when a .bin file is loaded.
Make it opt-in via a device tree property for now, in case it is needed on some
boards.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 drivers/net/wireless/mediatek/mt76/mt76x2/eeprom.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt76x2/eeprom.c
index 4a748a6f0ce2..410ffce3baff 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x2/eeprom.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2/eeprom.c
@@ -4,6 +4,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/of.h>
 #include <asm/unaligned.h>
 #include "mt76x2.h"
 #include "eeprom.h"
@@ -76,6 +77,7 @@ mt76x2_apply_cal_free_data(struct mt76x02_dev *dev, u8 *efuse)
 		MT_EE_RF_5G_GRP4_5_RX_HIGH_GAIN,
 		MT_EE_RF_5G_GRP4_5_RX_HIGH_GAIN + 1,
 	};
+	struct device_node *np = dev->mt76.dev->of_node;
 	u8 *eeprom = dev->mt76.eeprom.data;
 	u8 prev_grp0[4] = {
 		eeprom[MT_EE_TX_POWER_0_START_5G],
@@ -86,6 +88,9 @@ mt76x2_apply_cal_free_data(struct mt76x02_dev *dev, u8 *efuse)
 	u16 val;
 	int i;
 
+	if (!np || !of_property_read_bool(np, "mediatek,eeprom-merge-otp"))
+		return;
+
 	if (!mt76x2_has_cal_free_data(dev, efuse))
 		return;
 
-- 
2.24.0