On 14/04/18 00:54, Jennifer Dahm wrote: > From: Kyle Roeschley <kyle.roeschley@xxxxxx> > > On some NI 904x devices, using 3.3V signaling for extended periods of > time will physically damage the pads connected to the SDHC, eventually > causing complete failure of the controller. To work around this, > require that we avoid 3.3V signaling. > > Signed-off-by: Kyle Roeschley <kyle.roeschley@xxxxxx> > Signed-off-by: Jennifer Dahm <jennifer.dahm@xxxxxx> Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx> > --- > drivers/mmc/host/sdhci-pci-core.c | 4 ++++ > drivers/mmc/host/sdhci-pci.h | 1 + > 2 files changed, 5 insertions(+) > > diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c > index 787434e..ad0ca86 100644 > --- a/drivers/mmc/host/sdhci-pci-core.c > +++ b/drivers/mmc/host/sdhci-pci-core.c > @@ -832,6 +832,10 @@ static int byt_sd_probe_slot(struct sdhci_pci_slot *slot) > slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_SD) > slot->host->mmc_host_ops.get_cd = bxt_get_cd; > > + if (slot->chip->pdev->subsystem_vendor == PCI_VENDOR_ID_NI && > + slot->chip->pdev->subsystem_device == PCI_SUBDEVICE_ID_NI_78E3) > + slot->host->mmc->caps2 |= MMC_CAP2_AVOID_3_3V; > + > return 0; > } > > diff --git a/drivers/mmc/host/sdhci-pci.h b/drivers/mmc/host/sdhci-pci.h > index 5cbcdc4..db9cb54 100644 > --- a/drivers/mmc/host/sdhci-pci.h > +++ b/drivers/mmc/host/sdhci-pci.h > @@ -54,6 +54,7 @@ > #define PCI_DEVICE_ID_REALTEK_5250 0x5250 > > #define PCI_SUBDEVICE_ID_NI_7884 0x7884 > +#define PCI_SUBDEVICE_ID_NI_78E3 0x78e3 > > #define PCI_VENDOR_ID_ARASAN 0x16e6 > #define PCI_DEVICE_ID_ARASAN_PHY_EMMC 0x0670 > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
