On 2016年07月27日 19:15, Jaehoon Chung wrote:
On 07/27/2016 04:28 PM, Yangbo Lu wrote:
Hi Tom,
Could you help to assign this mmc patch reviewing to right person?
It seems no one had reviewed it for almost half year.
And another my mmc patch also needs to be reviewed.
I submitted in May. Please help.
http://patchwork.ozlabs.org/patch/624448/
Thank you very much.
Best regards,
Yangbo Lu
-----Original Message-----
From: Yangbo Lu [mailto:yangbo...@nxp.com]
Sent: Wednesday, March 09, 2016 11:00 AM
To: u-boot@lists.denx.de
Cc: Pantelis Antoniou; Yangbo Lu
Subject: [PATCH] mmc: send CMD0 before CMD1 for some MMC cards
When the MMC framework was added in u-boot, the mmc_go_idle was added
before mmc_send_op_cond_iter in function mmc_send_op_cond annotating that
some cards seemed to need this. Actually, we still need to do this in
function mmc_complete_op_cond for those cards.
This has been verified on Micron MTFC4GACAECN eMMC chip.
If there is no go_idle(), then what happen?
If you share the information more, i can check the more..
Sounds interesting, I also want want to know what happen?
It seems like you failed in CMD1? The eMMC device was always in busy
device within 1 second?
Best Regards,
Jaehoon Chung
Signed-off-by: Yangbo Lu <yangbo...@nxp.com>
---
drivers/mmc/mmc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index ede5d6e..82e3268
100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -418,6 +418,9 @@ static int mmc_complete_op_cond(struct mmc *mmc)
uint start;
int err;
+ /* Some cards seem to need this */
+ mmc_go_idle(mmc);
+
mmc->op_cond_pending = 0;
if (!(mmc->ocr & OCR_BUSY)) {
start = get_timer(0);
--
2.1.0.27.g96db324
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