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path: root/drivers/mmc/core/sd_ops.c
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Diffstat (limited to 'drivers/mmc/core/sd_ops.c')
-rw-r--r--drivers/mmc/core/sd_ops.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c
index 9a777b0fea27..8b9b34286ef3 100644
--- a/drivers/mmc/core/sd_ops.c
+++ b/drivers/mmc/core/sd_ops.c
@@ -19,8 +19,13 @@
#include "sd_ops.h"
#include "mmc_ops.h"
+/*
+ * Extensive testing has shown that some specific SD cards
+ * require an increased command timeout to be successfully
+ * initialized.
+ */
#define SD_APP_OP_COND_PERIOD_US (10 * 1000) /* 10ms */
-#define SD_APP_OP_COND_TIMEOUT_MS 1000 /* 1s */
+#define SD_APP_OP_COND_TIMEOUT_MS 2000 /* 2s */
struct sd_app_op_cond_busy_data {
struct mmc_host *host;