Hi Shawn, On 27 February 2018 14:28, Shawn Lin wrote: > 在 2018/2/27 21:55, Phil Edworthy 写道: > > Since the controller does not support the end-of-busy IRQ, don't use it. > > Otherwise, on older SD cards you will get lots of these messages: > > "mmc0: Got data interrupt 0x00000002 even though no data operation was > in progress" > > > > I'm afraid you have to explain which version of arasan's IP suffer from this > and what does the "older SD cards" mean? Ok, I'll try to find out the IP version... For "older SD cards", I can provide a list of a few cards that exhibit this problem and others that don't, is that enough info? Thanks Phil > > This has been reported on Xilinx devices that also use the Arasan IP. > > See https://patchwork.kernel.org/patch/8062871/ > > > > This has been tested on the Renesas RZ/ND-DB board with the RZ/N1 SoC. > > > > Signed-off-by: Phil Edworthy <phil.edworthy@xxxxxxxxxxx> > > --- > > drivers/mmc/host/sdhci-of-arasan.c | 3 ++- > > 1 file changed, 2 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/mmc/host/sdhci-of-arasan.c > > b/drivers/mmc/host/sdhci-of-arasan.c > > index c33a5f7..ab66e32 100644 > > --- a/drivers/mmc/host/sdhci-of-arasan.c > > +++ b/drivers/mmc/host/sdhci-of-arasan.c > > @@ -290,7 +290,8 @@ static const struct sdhci_pltfm_data > sdhci_arasan_pdata = { > > .ops = &sdhci_arasan_ops, > > .quirks = SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN, > > .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | > > - SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN, > > + SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN | > > + SDHCI_QUIRK2_STOP_WITH_TC, > > }; > > > > static u32 sdhci_arasan_cqhci_irq(struct sdhci_host *host, u32 > > intmask) > > > > > -- > Best Regards > Shawn Lin
