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Subject[PATCH] mmc: sdhci-of-arasan: Add quirk to avoid erroneous msg
Date
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"

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@renesas.com>
---
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)
--
2.7.4
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