diff options
| author | Patrick Wildt <patrick@cvs.openbsd.org> | 2018-05-01 18:30:38 +0000 |
|---|---|---|
| committer | Patrick Wildt <patrick@cvs.openbsd.org> | 2018-05-01 18:30:38 +0000 |
| commit | ec03278638efbbd3aad18c8de36b4fe0b988ef5e (patch) | |
| tree | 55ea29d74cc180b78502e7ceeef6acdbbb5314be | |
| parent | c9e7c3964bbfdc4be983152cc3929cacb3c94458 (diff) | |
Bump the clock frequency to a higher level that every card (per spec)
has to support for MMC cards prior to reading the extended registers.
We already do this for SD cards. Fixes eMMC support on the i.MX8M.
Tested by and ok kettenis@
| -rw-r--r-- | sys/dev/sdmmc/sdmmc_mem.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/dev/sdmmc/sdmmc_mem.c b/sys/dev/sdmmc/sdmmc_mem.c index 8c7f1728e26..0afcbf6af1a 100644 --- a/sys/dev/sdmmc/sdmmc_mem.c +++ b/sys/dev/sdmmc/sdmmc_mem.c @@ -1,4 +1,4 @@ -/* $OpenBSD: sdmmc_mem.c,v 1.31 2018/03/20 04:18:40 jmatthew Exp $ */ +/* $OpenBSD: sdmmc_mem.c,v 1.32 2018/05/01 18:30:37 patrick Exp $ */ /* * Copyright (c) 2006 Uwe Stuehler <uwe@openbsd.org> @@ -674,6 +674,12 @@ sdmmc_mem_mmc_init(struct sdmmc_softc *sc, struct sdmmc_function *sf) int timing = SDMMC_TIMING_LEGACY; u_int32_t sectors = 0; + error = sdmmc_chip_bus_clock(sc->sct, sc->sch, speed, timing); + if (error) { + printf("%s: can't change bus clock\n", DEVNAME(sc)); + return error; + } + if (sf->csd.mmcver >= MMC_CSD_MMCVER_4_0) { /* read EXT_CSD */ error = sdmmc_mem_send_cxd_data(sc, |