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aw_mmc: Regulator improvement

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Getting regulator is good, enabling them is better.
When the mmc stack decide to change the voltage for IO, don't
change the main vcc of the sd/mmc, only the io vcc.
This commit is contained in:
Emmanuel Vadot 2018-03-03 18:30:31 +00:00
parent c175fd0fe8
commit 3177f7cda1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=330348
1 changed files with 11 additions and 12 deletions
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23
sys/arm/allwinner/aw_mmc.c
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@ -267,11 +267,17 @@ aw_mmc_attach(device_t dev)
bus_width = 4;
if (regulator_get_by_ofw_property(dev, 0, "vmmc-supply",
&sc->aw_reg_vmmc) == 0 && bootverbose)
device_printf(dev, "vmmc-supply regulator found\n");
&sc->aw_reg_vmmc) == 0) {
if (bootverbose)
device_printf(dev, "vmmc-supply regulator found\n");
regulator_enable(sc->aw_reg_vmmc);
}
if (regulator_get_by_ofw_property(dev, 0, "vqmmc-supply",
&sc->aw_reg_vqmmc) == 0 && bootverbose)
device_printf(dev, "vqmmc-supply regulator found\n");
&sc->aw_reg_vqmmc) == 0 && bootverbose) {
if (bootverbose)
device_printf(dev, "vqmmc-supply regulator found\n");
regulator_enable(sc->aw_reg_vqmmc);
}
sc->aw_host.f_min = 400000;
sc->aw_host.f_max = 52000000;
@ -861,7 +867,7 @@ aw_mmc_set_power(struct aw_mmc_softc *sc, int32_t vdd)
sc->aw_vdd = vdd;
if (sc->aw_reg_vmmc == NULL && sc->aw_reg_vqmmc == NULL)
if (sc->aw_reg_vqmmc == NULL)
return;
switch (1 << vdd) {
@ -878,13 +884,6 @@ aw_mmc_set_power(struct aw_mmc_softc *sc, int32_t vdd)
break;
}
if (sc->aw_reg_vmmc)
if (regulator_set_voltage(sc->aw_reg_vmmc,
min_uvolt, max_uvolt) != 0)
device_printf(sc->aw_dev,
"Cannot set vmmc to %d<->%d\n",
min_uvolt,
max_uvolt);
if (sc->aw_reg_vqmmc)
if (regulator_set_voltage(sc->aw_reg_vqmmc,
min_uvolt, max_uvolt) != 0)