diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2020-08-16 14:09:55 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2020-08-16 14:09:55 +0000 |
| commit | 2bf3778d8843307bf89424b2a4a93bf8b1aa8140 (patch) | |
| tree | 6c2a7e5e27bc771fe344084ea290bb87058a98a3 | |
| parent | 1d510bb94cb9670c4c29b5ef761ccc1a3238a169 (diff) | |
Properly implement setting of the signal voltage.
| -rw-r--r-- | sys/dev/fdt/amlmmc.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/sys/dev/fdt/amlmmc.c b/sys/dev/fdt/amlmmc.c index b77c2b895ac..d488c0ff50c 100644 --- a/sys/dev/fdt/amlmmc.c +++ b/sys/dev/fdt/amlmmc.c @@ -1,4 +1,4 @@ -/* $OpenBSD: amlmmc.c,v 1.7 2020/08/14 15:15:27 kettenis Exp $ */ +/* $OpenBSD: amlmmc.c,v 1.8 2020/08/16 14:09:54 kettenis Exp $ */ /* * Copyright (c) 2019 Mark Kettenis <kettenis@openbsd.org> * @@ -727,8 +727,27 @@ wait: int amlmmc_signal_voltage(sdmmc_chipset_handle_t sch, int signal_voltage) { - /* XXX Check/set signaling voltage. */ - return 0; + struct amlmmc_softc *sc = sch; + uint32_t vccq; + + if (sc->sc_vqmmc == 0) + return ENODEV; + + switch (signal_voltage) { + case SDMMC_SIGNAL_VOLTAGE_180: + vccq = 1800000; + break; + case SDMMC_SIGNAL_VOLTAGE_330: + vccq = 3300000; + break; + default: + return EINVAL; + } + + if (regulator_get_voltage(sc->sc_vqmmc) == vccq) + return 0; + + return regulator_set_voltage(sc->sc_vqmmc, vccq); } int |