Author: manu
Date: Sat Mar 3 18:30:31 2018
New Revision: 330348
URL: https://svnweb.freebsd.org/changeset/base/330348
Log:
aw_mmc: Regulator improvement
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.
Modified:
head/sys/arm/allwinner/aw_mmc.c
Modified: head/sys/arm/allwinner/aw_mmc.c
==============================================================================
--- head/sys/arm/allwinner/aw_mmc.c Sat Mar 3 18:28:19 2018
(r330347)
+++ head/sys/arm/allwinner/aw_mmc.c Sat Mar 3 18:30:31 2018
(r330348)
@@ -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)
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