Hi, On 9/17/21 4:50 PM, Christian Löhle wrote: > > Set the limit to 1s if the register is at reset value. > > Signed-off-by: Christian Loehle <cloehle@xxxxxxxxxxxxxx> > --- > drivers/mmc/host/dw_mmc.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c > index 6578cc64ae9e..cd9a6e0a7449 100644 > --- a/drivers/mmc/host/dw_mmc.c > +++ b/drivers/mmc/host/dw_mmc.c > @@ -1983,6 +1983,14 @@ static void dw_mci_set_drto(struct dw_mci *host) > /* add a bit spare time */ > drto_ms += 10; > > + /* > + * If TMOUT register still holds the reset value the above calculation > + * would yield a timeout of over 167 seconds, limit it to 1000ms. > + * Normal reads/writes should not take anywhere close to 120s. > + */ > + if (drto_ms > 120000) > + drto_ms = 1000; > + If dtrt_ms is 167sec, it means that bus_hz should be 0 or 1. What value is your host->bus_hz? Best Regards, Jaehoon Chung > spin_lock_irqsave(&host->irq_lock, irqflags); > if (!test_bit(EVENT_DATA_COMPLETE, &host->pending_events)) > mod_timer(&host->dto_timer, >
