On 2018/2/27 23:05, Phil Edworthy wrote:
Hi Shawn,
On 27 February 2018 14:42, Shawn Lin wrote:
On 2018/2/27 22:31, Phil Edworthy wrote:
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?
What I meant is could you elaborate more about what kind of cards, e.g, are
them the legacy SDSC cards or SDHC cards, or maybe they are only running
with defaut speed? or whatever, but not just with a vague "older" cards. :)
Unfortunately, I have one SDHC card that works, one that doesn't. Both cards
are running with a 50MHz SD clock. All I know is this:
Thanks for sharing these, though it looks wired as I never remember I
saw this problem when extensively tested SD cards on one of arasan
controllers in 2014.
SD cards that report unexpected interrupts:
2GB Sandisk Extreme III (e624 SD02G 1.89 GiB)
8GB Sandisk (SDHC class 4) (aaaa SU08G 7.40 GiB)
8GB Sandisk Extreme III (SDHC class 6) (bb4e SD08G 7.61 GiB)
SD cards that work ok:
16GB Samsung (microSDHC U1 class 10) (0001 00000 14.6 GiB)
16GB Sandisk Ultra (microSDHC U1 class 10) (aaaa SL16G 14.8 GiB)
32GB Sandisk Ultra (microSDHC U1 class 10) (aaaa SL32G 29.7 GiB)
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
--
Best Regards
Shawn Lin
