Linux MultiMedia Card development
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* [PATCH v3 1/1] mmc: core: increase the timeout period of the ACMD41 command.
@ 2024-04-29  6:38 Felix Qin
  2024-04-29  7:09 ` Dragan Simic
  0 siblings, 1 reply; 8+ messages in thread
From: Felix Qin @ 2024-04-29  6:38 UTC (permalink / raw)
  To: ulf.hansson, linux-mmc; +Cc: Felix Qin, Avri Altman, Dragan Simic

Extensive testing has shown that some specific SD cards require an
increased command timeout to be successfully initialized.

More info:
Platform: Rockchip SoC + DW Multimedia host Controller
SD card: Xvv microSD CMH34A17TMA12 (Made in Korea)
Note: The SD card is custom-made by the customer in collaboration
with the wafer foundry.

Signed-off-by: Felix Qin <xiaokeqinhealth@126.com>
Acked-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>

---
v2: Add more info
v3: Based on the __mmc_poll_for_busy API for modification
---
 drivers/mmc/core/sd_ops.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c
index 3ce1ff336826..a1c028303ba7 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;
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 8+ messages in thread
* [PATCH v3 1/1] mmc: core: increase the timeout period of the ACMD41 command.
@ 2024-04-29  7:19 Felix Qin
  2024-04-29 19:38 ` Avri Altman
                   ` (2 more replies)
  0 siblings, 3 replies; 8+ messages in thread
From: Felix Qin @ 2024-04-29  7:19 UTC (permalink / raw)
  To: ulf.hansson, linux-mmc; +Cc: Felix Qin

Extensive testing has shown that some specific SD cards require an
increased command timeout to be successfully initialized.

More info:
Platform: Rockchip SoC + DW Multimedia host Controller
SD card: Xvv microSD CMH34A17TMA12 (Made in Korea)
Note: The SD card is custom-made by the customer in collaboration
with the wafer foundry.

Signed-off-by: Felix Qin <xiaokeqinhealth@126.com>

---
v2: Add more info
v3: Based on the __mmc_poll_for_busy API for modification
---
 drivers/mmc/core/sd_ops.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c
index 3ce1ff336826..a1c028303ba7 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;
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2024-05-03 13:15 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-04-29  6:38 [PATCH v3 1/1] mmc: core: increase the timeout period of the ACMD41 command Felix Qin
2024-04-29  7:09 ` Dragan Simic
2024-04-29  7:19   ` Yao Xiao
2024-04-29  7:22     ` Dragan Simic
  -- strict thread matches above, loose matches on Subject: below --
2024-04-29  7:19 Felix Qin
2024-04-29 19:38 ` Avri Altman
2024-04-30  1:27 ` Dragan Simic
2024-05-03 13:14 ` Ulf Hansson

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