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From: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [UBOOT v2 12/15] mmc: sdhci: Add support for eMMC HS200 mode
Date: Mon, 30 Jan 2017 16:08:29 +0530	[thread overview]
Message-ID: <1485772712-4653-13-git-send-email-sivadur@xilinx.com> (raw)
In-Reply-To: <1485772712-4653-1-git-send-email-sivadur@xilinx.com>

Add support for eMMC HS200 mode by reading
card type from ext_csd and then by switching to
HS200 timing mode.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
---
Changes from v1:
- Split the patch with only mmc changes
---
 drivers/mmc/mmc.c | 24 ++++++++++++++++++------
 include/mmc.h     |  7 +++++++
 2 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 0f0bfc8..02c0408 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -619,9 +619,16 @@ static int mmc_change_freq(struct mmc *mmc)
 	if (err)
 		return err;
 
-	cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf;
+	cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0x3f;
 
-	err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
+	if (cardtype & EXT_CSD_CARD_TYPE_HS200)
+		err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
+				 EXT_CSD_HS_TIMING,
+				 EXT_CSD_HS_TIMING_HS200);
+	else
+		err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
+				 EXT_CSD_HS_TIMING,
+				 EXT_CSD_HS_TIMING_HIGH_SPEED);
 
 	if (err)
 		return err;
@@ -636,8 +643,10 @@ static int mmc_change_freq(struct mmc *mmc)
 	if (!ext_csd[EXT_CSD_HS_TIMING])
 		return 0;
 
-	/* High Speed is set, there are two types: 52MHz and 26MHz */
-	if (cardtype & EXT_CSD_CARD_TYPE_52) {
+	/* High Speed is set, there are three types: 200MHZ, 52MHz and 26MHz */
+	if (cardtype & EXT_CSD_CARD_TYPE_HS200) {
+		mmc->card_caps |= MMC_MODE_HS200;
+	} else if (cardtype & EXT_CSD_CARD_TYPE_52) {
 		if (cardtype & EXT_CSD_CARD_TYPE_DDR_1_8V)
 			mmc->card_caps |= MMC_MODE_DDR_52MHz;
 		mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
@@ -1659,7 +1668,9 @@ static int mmc_startup(struct mmc *mmc)
 		if (err)
 			return err;
 
-		if (mmc->card_caps & MMC_MODE_HS) {
+		if (mmc->card_caps & MMC_MODE_HS200) {
+			mmc->tran_speed = 200000000;
+		} else if (mmc->card_caps & MMC_MODE_HS) {
 			if (mmc->card_caps & MMC_MODE_HS_52MHz)
 				mmc->tran_speed = 52000000;
 			else
@@ -1670,7 +1681,8 @@ static int mmc_startup(struct mmc *mmc)
 	mmc_set_clock(mmc, mmc->tran_speed);
 
 	if ((mmc->card_caps & (MMC_MODE_UHS_SDR50 |
-			       MMC_MODE_UHS_SDR104)) &&
+			       MMC_MODE_UHS_SDR104 |
+			       MMC_MODE_HS200)) &&
 	    (mmc->cfg->host_caps & MMC_MODE_NEEDS_TUNING)) {
 		err = mmc_execute_tuning(mmc);
 		if (err)
diff --git a/include/mmc.h b/include/mmc.h
index 56395ee..90e1dcc 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -223,6 +223,13 @@
 #define EXT_CSD_CARD_TYPE_DDR_1_2V	(1 << 3)
 #define EXT_CSD_CARD_TYPE_DDR_52	(EXT_CSD_CARD_TYPE_DDR_1_8V \
 					| EXT_CSD_CARD_TYPE_DDR_1_2V)
+#define EXT_CSD_CARD_TYPE_HS200_1_8V	(1 << 4)
+#define EXT_CSD_CARD_TYPE_HS200_1_2V	(1 << 5)
+#define EXT_CSD_CARD_TYPE_HS200		(EXT_CSD_CARD_TYPE_HS200_1_8V \
+					| EXT_CSD_CARD_TYPE_HS200_1_2V)
+
+#define EXT_CSD_HS_TIMING_HIGH_SPEED	1
+#define EXT_CSD_HS_TIMING_HS200		2
 
 #define EXT_CSD_BUS_WIDTH_1	0	/* Card is in 1 bit mode */
 #define EXT_CSD_BUS_WIDTH_4	1	/* Card is in 4 bit mode */
-- 
2.7.4

  parent reply	other threads:[~2017-01-30 10:38 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20170130103830epcas1p195ed3f0d004b3724edeebd6f000212ce@epcas1p1.samsung.com>
2017-01-30 10:38 ` [U-Boot] [UBOOT v2 00/15] Add support for SD3.0 and eMMC HS200 Siva Durga Prasad Paladugu
2017-01-30 10:38   ` [U-Boot] [UBOOT v2 01/15] mmc: sdhci: Update host capabilities about host controller Siva Durga Prasad Paladugu
2017-01-30 10:38   ` [U-Boot] [UBOOT v2 02/15] mmc: Add support for SD3.0 Siva Durga Prasad Paladugu
2017-01-30 10:38   ` [U-Boot] [UBOOT v2 03/15] mmc: sdhci: Add SD3.0 support Siva Durga Prasad Paladugu
2017-01-30 10:38   ` [U-Boot] [UBOOT v2 04/15] mmc: sdhci: Add support for platform/board specific tuning Siva Durga Prasad Paladugu
2017-01-30 10:38   ` [U-Boot] [UBOOT v2 05/15] mmc: sdhci: Add support for platform specific delay Siva Durga Prasad Paladugu
2017-01-30 10:38   ` [U-Boot] [UBOOT v2 06/15] mmc: sdhci: Make sdhci_ops of host as modifiable Siva Durga Prasad Paladugu
2017-01-30 10:38   ` [U-Boot] [UBOOT v2 07/15] zynqmp: Define routines for mmio write and read Siva Durga Prasad Paladugu
2017-01-30 10:38   ` [U-Boot] [UBOOT v2 08/15] mmc: sdhci: zynq: Define private structure arasan_sdhci_priv Siva Durga Prasad Paladugu
2017-01-30 10:38   ` [U-Boot] [UBOOT v2 09/15] mmc: sdhci: zynqmp: Add support of SD3.0 Siva Durga Prasad Paladugu
2017-01-30 10:38   ` [U-Boot] [UBOOT v2 10/15] mmc: sdhci: Add quirk for 1.8v switching not supported Siva Durga Prasad Paladugu
2017-01-30 10:38   ` [U-Boot] [UBOOT v2 11/15] mmc: zynq_sdhci: Update quirk if " Siva Durga Prasad Paladugu
2017-01-30 10:38   ` Siva Durga Prasad Paladugu [this message]
2017-01-30 10:38   ` [U-Boot] [UBOOT v2 13/15] mmc: sdhci: Update execute tuning and set clock for HS200 Siva Durga Prasad Paladugu
2017-01-30 10:38   ` [U-Boot] [UBOOT v2 14/15] mmc: sdhci: zynqmp: Set tapdelays for eMMC HS200 mode Siva Durga Prasad Paladugu
2017-01-30 10:38   ` [U-Boot] [UBOOT v2 15/15] mmc: Change frequency while accessing to boot partition Siva Durga Prasad Paladugu
2017-02-02 10:52   ` [U-Boot] [UBOOT v2 00/15] Add support for SD3.0 and eMMC HS200 Jaehoon Chung

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