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Enable LDO to 2.5V before efuse r/w action in order to prevent

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incorrect mac address read from efuse.

Reported by:	swills
Tested by:	rpaulo and myself on RPi
This commit is contained in:
Kevin Lo 2015-04-16 07:40:01 +00:00
parent 969dfbc7f3
commit c3358f4ed2
1 changed files with 12 additions and 1 deletions
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13
sys/dev/usb/wlan/if_urtwn.c
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@ -1195,7 +1195,7 @@ urtwn_efuse_read(struct urtwn_softc *sc)
uint8_t *rom = (uint8_t *)&sc->rom;
uint16_t addr = 0;
uint32_t reg;
uint8_t off, msk;
uint8_t off, msk, vol;
int i;
urtwn_efuse_switch_power(sc);
@ -1228,10 +1228,15 @@ urtwn_efuse_read(struct urtwn_softc *sc)
printf("\n");
}
#endif
/* Disable LDO 2.5V. */
vol = urtwn_read_1(sc, R92C_EFUSE_TEST + 3);
urtwn_write_1(sc, R92C_EFUSE_TEST + 3, vol & ~(0x80));
}
static void
urtwn_efuse_switch_power(struct urtwn_softc *sc)
{
uint8_t vol;
uint32_t reg;
reg = urtwn_read_2(sc, R92C_SYS_ISO_CTRL);
@ -1250,6 +1255,12 @@ urtwn_efuse_switch_power(struct urtwn_softc *sc)
urtwn_write_2(sc, R92C_SYS_CLKR,
reg | R92C_SYS_CLKR_LOADER_EN | R92C_SYS_CLKR_ANA8M);
}
/* Enable LDO 2.5V. */
vol = urtwn_read_1(sc, R92C_EFUSE_TEST + 3);
vol &= 0x0f;
vol |= 0x30;
urtwn_write_1(sc, R92C_EFUSE_TEST + 3, (vol | 0x80));
}
static int