diff options
| author | Daniel Golle <daniel@makrotopia.org> | 2021-08-25 02:32:16 +0100 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2021-10-20 10:36:48 +0200 |
| commit | 255d3807b60436c9699fc593b66b2dbb6203b2df (patch) | |
| tree | ec92a9ab669972e8d9d2efc84e520f49827bb9d6 | |
| parent | c4a784e34bd5c30bfc1dbb6131e05b92237ac750 (diff) | |
mt76: support reading EEPROM data embedded in fdt
Some platforms boot from SD card and don't come with calibration data
stored anywhere on the board.
As EEPROM data is rather small it can be embedded into the device tree
to be loaded from there by the mt76.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/eeprom.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/eeprom.c b/drivers/net/wireless/mediatek/mt76/eeprom.c index 376c3bd883e5..e65b2262e692 100644 --- a/drivers/net/wireless/mediatek/mt76/eeprom.c +++ b/drivers/net/wireless/mediatek/mt76/eeprom.c @@ -15,6 +15,7 @@ int mt76_get_of_eeprom(struct mt76_dev *dev, void *eep, int offset, int len) struct device_node *np = dev->dev->of_node; struct mtd_info *mtd; const __be32 *list; + const void *data; const char *part; phandle phandle; int size; @@ -24,6 +25,16 @@ int mt76_get_of_eeprom(struct mt76_dev *dev, void *eep, int offset, int len) if (!np) return -ENOENT; + data = of_get_property(np, "mediatek,eeprom-data", &size); + if (data) { + if (size > len) + return -EINVAL; + + memcpy(eep, data, size); + + return 0; + } + list = of_get_property(np, "mediatek,mtd-eeprom", &size); if (!list) return -ENOENT; |