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path: root/drivers/mmc/core/mmc.c
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Diffstat (limited to 'drivers/mmc/core/mmc.c')
-rw-r--r--drivers/mmc/core/mmc.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 66c4a59fee5..3ea58ce773f 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -375,7 +375,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
375 struct mmc_card *oldcard) 375 struct mmc_card *oldcard)
376{ 376{
377 struct mmc_card *card; 377 struct mmc_card *card;
378 int err; 378 int err, ddr = 0;
379 u32 cid[4]; 379 u32 cid[4];
380 unsigned int max_dtr; 380 unsigned int max_dtr;
381 381
@@ -518,32 +518,32 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
518 mmc_set_clock(host, max_dtr); 518 mmc_set_clock(host, max_dtr);
519 519
520 /* 520 /*
521 * Activate DDR50 mode (if supported). 521 * Indicate DDR mode (if supported).
522 */ 522 */
523 if (mmc_card_highspeed(card)) { 523 if (mmc_card_highspeed(card)) {
524 if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) 524 if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V)
525 && (host->caps & (MMC_CAP_1_8V_DDR))) 525 && (host->caps & (MMC_CAP_1_8V_DDR)))
526 mmc_card_set_ddr_mode(card); 526 ddr = 1;
527 else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) 527 else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)
528 && (host->caps & (MMC_CAP_1_2V_DDR))) 528 && (host->caps & (MMC_CAP_1_2V_DDR)))
529 mmc_card_set_ddr_mode(card); 529 ddr = 1;
530 } 530 }
531 531
532 /* 532 /*
533 * Activate wide bus (if supported). 533 * Activate wide bus and DDR (if supported).
534 */ 534 */
535 if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) && 535 if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
536 (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { 536 (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) {
537 unsigned ext_csd_bit, bus_width; 537 unsigned ext_csd_bit, bus_width;
538 538
539 if (host->caps & MMC_CAP_8_BIT_DATA) { 539 if (host->caps & MMC_CAP_8_BIT_DATA) {
540 if (mmc_card_ddr_mode(card)) 540 if (ddr)
541 ext_csd_bit = EXT_CSD_DDR_BUS_WIDTH_8; 541 ext_csd_bit = EXT_CSD_DDR_BUS_WIDTH_8;
542 else 542 else
543 ext_csd_bit = EXT_CSD_BUS_WIDTH_8; 543 ext_csd_bit = EXT_CSD_BUS_WIDTH_8;
544 bus_width = MMC_BUS_WIDTH_8; 544 bus_width = MMC_BUS_WIDTH_8;
545 } else { 545 } else {
546 if (mmc_card_ddr_mode(card)) 546 if (ddr)
547 ext_csd_bit = EXT_CSD_DDR_BUS_WIDTH_4; 547 ext_csd_bit = EXT_CSD_DDR_BUS_WIDTH_4;
548 else 548 else
549 ext_csd_bit = EXT_CSD_BUS_WIDTH_4; 549 ext_csd_bit = EXT_CSD_BUS_WIDTH_4;
@@ -557,12 +557,13 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
557 goto free_card; 557 goto free_card;
558 558
559 if (err) { 559 if (err) {
560 printk(KERN_WARNING "%s: switch to bus width %d " 560 printk(KERN_WARNING "%s: switch to bus width %d ddr %d "
561 "failed\n", mmc_hostname(card->host), 561 "failed\n", mmc_hostname(card->host),
562 1 << bus_width); 562 1 << bus_width, ddr);
563 err = 0; 563 err = 0;
564 } else { 564 } else {
565 mmc_set_bus_width(card->host, bus_width); 565 mmc_card_set_ddr_mode(card);
566 mmc_set_bus_width_ddr(card->host, bus_width, ddr);
566 } 567 }
567 } 568 }
568 569