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Disable UHS modes if signaling voltage regulator is unavailable.

This commit is contained in:
jmcneill 2017-07-21 01:00:58 +00:00
parent 73ac277564
commit 29db065a43
1 changed files with 10 additions and 2 deletions
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12
sys/arch/arm/nvidia/tegra_sdhc.c
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@ -1,4 +1,4 @@
/* $NetBSD: tegra_sdhc.c,v 1.20 2017/05/25 23:53:50 jmcneill Exp $ */
/* $NetBSD: tegra_sdhc.c,v 1.21 2017/07/21 01:00:58 jmcneill Exp $ */
/*-
* Copyright (c) 2015 Jared D. McNeill <jmcneill@invisible.ca>
@ -31,7 +31,7 @@
#include "locators.h"
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: tegra_sdhc.c,v 1.20 2017/05/25 23:53:50 jmcneill Exp $");
__KERNEL_RCSID(0, "$NetBSD: tegra_sdhc.c,v 1.21 2017/07/21 01:00:58 jmcneill Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@ -165,6 +165,14 @@ tegra_sdhc_attach(device_t parent, device_t self, void *aux)
"vqmmc-supply");
if (sc->sc_reg_vqmmc) {
sc->sc.sc_vendor_signal_voltage = tegra_sdhc_signal_voltage;
} else {
/* Regulator required for UHS signaling */
sc->sc.sc_flags |= SDHC_FLAG_HOSTCAPS;
sc->sc.sc_caps = bus_space_read_4(sc->sc_bst, sc->sc_bsh,
SDHC_CAPABILITIES);
sc->sc.sc_caps2 = bus_space_read_4(sc->sc_bst, sc->sc_bsh,
SDHC_CAPABILITIES2);
sc->sc.sc_caps2 &= ~(SDHC_SDR50_SUPP|SDHC_SDR104_SUPP|SDHC_DDR50_SUPP);
}
sc->sc_clk = fdtbus_clock_get_index(faa->faa_phandle, 0);