[PATCH v1] mmc: sdhci-of-dwcmshc: fix DMA 128MB boundary

From: hehuan1

Date: Wed Jan 14 2026 - 07:23:09 EST


From: Huan He <hehuan1@xxxxxxxxxxxxxxxxxx>

This DWC MSHC has a 128MB limitation where the data buffer size and start
address must not exceed the 128MB boundary. Registering the missing
'adma_write_desc' callback function.

Signed-off-by: Huan He <hehuan1@xxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci-of-dwcmshc.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c
index 51949cde0958..cabb709a8108 100644
--- a/drivers/mmc/host/sdhci-of-dwcmshc.c
+++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
@@ -1726,6 +1726,7 @@ static const struct sdhci_ops sdhci_dwcmshc_eic7700_ops = {
.set_uhs_signaling = sdhci_eic7700_set_uhs_wrapper,
.set_power = sdhci_set_power_and_bus_voltage,
.irq = dwcmshc_cqe_irq_handler,
+ .adma_write_desc = dwcmshc_adma_write_desc,
.platform_execute_tuning = sdhci_eic7700_executing_tuning,
};

--
2.25.1