Any comments? Thanks.
Best regards, Yangbo Lu
-----Original Message----- From: Yangbo Lu [mailto:yangbo.lu@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.
Signed-off-by: Yangbo Lu yangbo.lu@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