[PATCH v2 1/2] [MMC-4.5] Disable emulation

[PATCH v2 1/2] [MMC-4.5] Disable emulation

[Saugata Das]

From: Saugata Das <saugata.das@linaro.org>

This patch adds the support for large sector size of 4KB by disabling emulation.
This patch passes eMMC DATA_SECTOR_SIZE as the logical block size during
mmc_blk_alloc_req.

In order to use this patch for 4KB sector size, ensure that USE_NATIVE_SECTOR
is enabled, partition table is 4KB sector size aligned and file system block
and sector size are 4KB multiples.

Signed-off-by: Saugata Das <saugata.das@linaro.org>

changes in v2:
	Updated description, added pr_err based on review feedback
---
 drivers/mmc/card/block.c |   18 ++++++++++++++++--
 drivers/mmc/core/mmc.c   |    2 ++
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 91cda75..d628c5d 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1284,7 +1284,7 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
 	int ret = 1, disable_multi = 0, retry = 0, type;
 	enum mmc_blk_status status;
 	struct mmc_queue_req *mq_rq;
-	struct request *req;
+	struct request *req = rqc;
 	struct mmc_async_req *areq;
 
 	if (!rqc && !mq->mqrq_prev->req)
@@ -1292,6 +1292,16 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
 
 	do {
 		if (rqc) {
+			/*
+			 * When 4KB native sector is enabled, only 8 blocks
+			 * multiple read or write is allowed
+			 */
+			if ((brq->data.blocks & 0x07) &&
+				(card->ext_csd.data_sector_size == 4096)) {
+				pr_err("%s: Transfer size is not 4KB sector size aligned\n",
+					req->rq_disk->disk_name);
+				goto cmd_abort;
+			}
 			mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq);
 			areq = &mq->mqrq_cur->mmc_active;
 		} else
@@ -1539,7 +1549,11 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
 	snprintf(md->disk->disk_name, sizeof(md->disk->disk_name),
 		 "mmcblk%d%s", md->name_idx, subname ? subname : "");
 
-	blk_queue_logical_block_size(md->queue.queue, 512);
+	if (mmc_card_mmc(card))
+		blk_queue_logical_block_size(md->queue.queue,
+			card->ext_csd.data_sector_size);
+	else
+		blk_queue_logical_block_size(md->queue.queue, 512);
 	set_capacity(md->disk, size);
 
 	if (mmc_host_cmd23(card->host)) {
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 7268c26..11444c6 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -516,6 +516,8 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
 		} else {
 			card->ext_csd.data_tag_unit_size = 0;
 		}
+	} else {
+		card->ext_csd.data_sector_size = 512;
 	}
 
 out:
-- 
1.7.4.3

[PATCH v2 2/2] [MMC-4.5] [MMC UTIL] Disable emulation

[Saugata Das]

From: Saugata Das <saugata.das@linaro.org>

In this patch, we add utility to disable emulation mode in the eMMC-4.5.
This is done to increase the data sector size to 4KB.

Signed-off-by: Saugata Das <saugata.das@linaro.org>

changes in v2:
	Removed extra blank lines around do_disable_512B_emulation
	Review rework based on comments from Subhash
---
 mmc.c      |    6 ++++++
 mmc.h      |   10 ++++++++++
 mmc_cmds.c |   49 +++++++++++++++++++++++++++++++++++++++++++++++++
 mmc_cmds.h |    1 +
 4 files changed, 66 insertions(+), 0 deletions(-)

diff --git a/mmc.c b/mmc.c
index c27fc24..ebc7ab2 100644
--- a/mmc.c
+++ b/mmc.c
@@ -65,6 +65,12 @@ static struct Command commands[] = {
 		"Set the eMMC writeprotect status of <device>.",
 	  NULL
 	},
+	{ do_disable_512B_emulation, -1,
+	  "disable 512B emulation", "<device>\n"
+		"Set the eMMC data sector size to 4KB by disabling emulation <device>.",
+	  NULL
+	},
+
 	{ 0, 0, 0, 0 }
 };
 
diff --git a/mmc.h b/mmc.h
index 3af36f1..34c31d3 100644
--- a/mmc.h
+++ b/mmc.h
@@ -35,6 +35,16 @@
 #define EXT_CSD_PART_SWITCH_TIME	199
 #define EXT_CSD_BOOT_CFG		179
 #define EXT_CSD_BOOT_WP			173
+#define EXT_CSD_WR_REL_PARAM	166
+#define EXT_CSD_NATIVE_SECTOR_SIZE	63 /* R */
+#define EXT_CSD_USE_NATIVE_SECTOR	62 /* R/W */
+#define EXT_CSD_DATA_SECTOR_SIZE	61 /* R */
+
+/*
+ * WR_REL_PARAM field definitions
+ */
+#define HS_CTRL_REL	(1<<0)
+#define EN_REL_WR	(1<<2)
 
 /*
  * EXT_CSD field definitions
diff --git a/mmc_cmds.c b/mmc_cmds.c
index 4562cef..4bc1fd6 100644
--- a/mmc_cmds.c
+++ b/mmc_cmds.c
@@ -168,6 +168,55 @@ int do_writeprotect_set(int nargs, char **argv)
 	return ret;
 }
 
+int do_disable_512B_emulation(int nargs, char **argv)
+{
+	__u8 ext_csd[512], native_sector_size, data_sector_size, wr_rel_param;
+	int fd, ret;
+	char *device;
+
+	CHECK(nargs != 2, "Usage: mmc </path/to/mmcblkX>\n", exit(1));
+
+	device = argv[1];
+
+	fd = open(device, O_RDWR);
+	if (fd < 0) {
+		perror("open");
+		exit(1);
+	}
+
+	ret = read_extcsd(fd, ext_csd);
+	if (ret) {
+		fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
+		exit(1);
+	}
+
+	wr_rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
+	native_sector_size = ext_csd[EXT_CSD_NATIVE_SECTOR_SIZE];
+	data_sector_size = ext_csd[EXT_CSD_DATA_SECTOR_SIZE];
+
+	if (native_sector_size &&
+		!data_sector_size &&
+		(wr_rel_param & EN_REL_WR)) {
+		ret = write_extcsd_value(fd, EXT_CSD_USE_NATIVE_SECTOR, 1);
+
+		if (ret) {
+			fprintf(stderr, "Could not write 0x%02x to "
+					"EXT_CSD[%d] in %s\n",
+					1, EXT_CSD_BOOT_WP, device);
+			exit(1);
+		}
+		printf("MMC disable 512B emulation successful\n"
+				"Now reset the device to switch to 4KB "
+				"native sector mode\n");
+	} else if (native_sector_size && data_sector_size) {
+		printf("MMC already disabled 512B emulation mode\n");
+	} else {
+		printf("MMC does not support disabling 512B emulation mode\n");
+	}
+
+	return ret;
+}
+
 int do_read_extcsd(int nargs, char **argv)
 {
 	__u8 ext_csd[512], ext_csd_rev, reg;
diff --git a/mmc_cmds.h b/mmc_cmds.h
index 66e9acb..56f46d7 100644
--- a/mmc_cmds.h
+++ b/mmc_cmds.h
@@ -19,3 +19,4 @@ int do_read_extcsd(int nargs, char **argv);
 int do_write_extcsd(int nargs, char **argv);
 int do_writeprotect_get(int nargs, char **argv);
 int do_writeprotect_set(int nargs, char **argv);
+int do_disable_512B_emulation(int nargs, char **argv);
-- 
1.7.4.3

Re: [PATCH v2 1/2] [MMC-4.5] Disable emulation

[Namjae Jeon]

2012/5/17, Saugata Das <saugata.das@stericsson.com>:
> From: Saugata Das <saugata.das@linaro.org>
>
> This patch adds the support for large sector size of 4KB by disabling
> emulation.
> This patch passes eMMC DATA_SECTOR_SIZE as the logical block size during
> mmc_blk_alloc_req.
>
> In order to use this patch for 4KB sector size, ensure that
> USE_NATIVE_SECTOR
> is enabled, partition table is 4KB sector size aligned and file system
> block
> and sector size are 4KB multiples.
>
> Signed-off-by: Saugata Das <saugata.das@linaro.org>
Looks good.
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Thanks.

RE: [PATCH v2 2/2] [MMC-4.5] [MMC UTIL] Disable emulation

[Subhash Jadavani]

Thanks Saugata. 

Looks good to me.
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>

Regards,
Subhash

> -----Original Message-----
> From: linux-mmc-owner@vger.kernel.org [mailto:linux-mmc-
> owner@vger.kernel.org] On Behalf Of Saugata Das
> Sent: Thursday, May 17, 2012 4:32 PM
> To: linux-mmc@vger.kernel.org
> Cc: patches@linaro.org; saugata.das@linaro.org; subhashj@codeaurora.org;
> arnd.bergmann@linaro.org; venkat@linaro.org; lporzio@micron.com;
> linkinjeon@gmail.com
> Subject: [PATCH v2 2/2] [MMC-4.5] [MMC UTIL] Disable emulation
> 
> From: Saugata Das <saugata.das@linaro.org>
> 
> In this patch, we add utility to disable emulation mode in the eMMC-4.5.
> This is done to increase the data sector size to 4KB.
> 
> Signed-off-by: Saugata Das <saugata.das@linaro.org>
> 
> changes in v2:
> 	Removed extra blank lines around do_disable_512B_emulation
> 	Review rework based on comments from Subhash
> ---
>  mmc.c      |    6 ++++++
>  mmc.h      |   10 ++++++++++
>  mmc_cmds.c |   49
> +++++++++++++++++++++++++++++++++++++++++++++++++
>  mmc_cmds.h |    1 +
>  4 files changed, 66 insertions(+), 0 deletions(-)
> 
> diff --git a/mmc.c b/mmc.c
> index c27fc24..ebc7ab2 100644
> --- a/mmc.c
> +++ b/mmc.c
> @@ -65,6 +65,12 @@ static struct Command commands[] = {
>  		"Set the eMMC writeprotect status of <device>.",
>  	  NULL
>  	},
> +	{ do_disable_512B_emulation, -1,
> +	  "disable 512B emulation", "<device>\n"
> +		"Set the eMMC data sector size to 4KB by disabling emulation
> <device>.",
> +	  NULL
> +	},
> +
>  	{ 0, 0, 0, 0 }
>  };
> 
> diff --git a/mmc.h b/mmc.h
> index 3af36f1..34c31d3 100644
> --- a/mmc.h
> +++ b/mmc.h
> @@ -35,6 +35,16 @@
>  #define EXT_CSD_PART_SWITCH_TIME	199
>  #define EXT_CSD_BOOT_CFG		179
>  #define EXT_CSD_BOOT_WP			173
> +#define EXT_CSD_WR_REL_PARAM	166
> +#define EXT_CSD_NATIVE_SECTOR_SIZE	63 /* R */
> +#define EXT_CSD_USE_NATIVE_SECTOR	62 /* R/W */
> +#define EXT_CSD_DATA_SECTOR_SIZE	61 /* R */
> +
> +/*
> + * WR_REL_PARAM field definitions
> + */
> +#define HS_CTRL_REL	(1<<0)
> +#define EN_REL_WR	(1<<2)
> 
>  /*
>   * EXT_CSD field definitions
> diff --git a/mmc_cmds.c b/mmc_cmds.c
> index 4562cef..4bc1fd6 100644
> --- a/mmc_cmds.c
> +++ b/mmc_cmds.c
> @@ -168,6 +168,55 @@ int do_writeprotect_set(int nargs, char **argv)
>  	return ret;
>  }
> 
> +int do_disable_512B_emulation(int nargs, char **argv) {
> +	__u8 ext_csd[512], native_sector_size, data_sector_size,
> wr_rel_param;
> +	int fd, ret;
> +	char *device;
> +
> +	CHECK(nargs != 2, "Usage: mmc </path/to/mmcblkX>\n", exit(1));
> +
> +	device = argv[1];
> +
> +	fd = open(device, O_RDWR);
> +	if (fd < 0) {
> +		perror("open");
> +		exit(1);
> +	}
> +
> +	ret = read_extcsd(fd, ext_csd);
> +	if (ret) {
> +		fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
> +		exit(1);
> +	}
> +
> +	wr_rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
> +	native_sector_size = ext_csd[EXT_CSD_NATIVE_SECTOR_SIZE];
> +	data_sector_size = ext_csd[EXT_CSD_DATA_SECTOR_SIZE];
> +
> +	if (native_sector_size &&
> +		!data_sector_size &&
> +		(wr_rel_param & EN_REL_WR)) {
> +		ret = write_extcsd_value(fd,
> EXT_CSD_USE_NATIVE_SECTOR, 1);
> +
> +		if (ret) {
> +			fprintf(stderr, "Could not write 0x%02x to "
> +					"EXT_CSD[%d] in %s\n",
> +					1, EXT_CSD_BOOT_WP, device);
> +			exit(1);
> +		}
> +		printf("MMC disable 512B emulation successful\n"
> +				"Now reset the device to switch to 4KB "
> +				"native sector mode\n");
> +	} else if (native_sector_size && data_sector_size) {
> +		printf("MMC already disabled 512B emulation mode\n");
> +	} else {
> +		printf("MMC does not support disabling 512B emulation
> mode\n");
> +	}
> +
> +	return ret;
> +}
> +
>  int do_read_extcsd(int nargs, char **argv)  {
>  	__u8 ext_csd[512], ext_csd_rev, reg;
> diff --git a/mmc_cmds.h b/mmc_cmds.h
> index 66e9acb..56f46d7 100644
> --- a/mmc_cmds.h
> +++ b/mmc_cmds.h
> @@ -19,3 +19,4 @@ int do_read_extcsd(int nargs, char **argv);  int
> do_write_extcsd(int nargs, char **argv);  int do_writeprotect_get(int
nargs,
> char **argv);  int do_writeprotect_set(int nargs, char **argv);
> +int do_disable_512B_emulation(int nargs, char **argv);
> --
> 1.7.4.3
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the
> body of a message to majordomo@vger.kernel.org More majordomo info at
> http://vger.kernel.org/majordomo-info.html

RE: [PATCH v2 1/2] [MMC-4.5] Disable emulation

[Subhash Jadavani]

Looks good to me.
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>

Regards,
Subhash

> -----Original Message-----
> From: Saugata Das [mailto:saugata.das@stericsson.com]
> Sent: Thursday, May 17, 2012 4:32 PM
> To: linux-mmc@vger.kernel.org
> Cc: patches@linaro.org; saugata.das@linaro.org; subhashj@codeaurora.org;
> arnd.bergmann@linaro.org; venkat@linaro.org; lporzio@micron.com;
> linkinjeon@gmail.com
> Subject: [PATCH v2 1/2] [MMC-4.5] Disable emulation
> 
> From: Saugata Das <saugata.das@linaro.org>
> 
> This patch adds the support for large sector size of 4KB by disabling
> emulation.
> This patch passes eMMC DATA_SECTOR_SIZE as the logical block size during
> mmc_blk_alloc_req.
> 
> In order to use this patch for 4KB sector size, ensure that
> USE_NATIVE_SECTOR is enabled, partition table is 4KB sector size aligned
and
> file system block and sector size are 4KB multiples.
> 
> Signed-off-by: Saugata Das <saugata.das@linaro.org>
> 
> changes in v2:
> 	Updated description, added pr_err based on review feedback
> ---
>  drivers/mmc/card/block.c |   18 ++++++++++++++++--
>  drivers/mmc/core/mmc.c   |    2 ++
>  2 files changed, 18 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index
> 91cda75..d628c5d 100644
> --- a/drivers/mmc/card/block.c
> +++ b/drivers/mmc/card/block.c
> @@ -1284,7 +1284,7 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue
> *mq, struct request *rqc)
>  	int ret = 1, disable_multi = 0, retry = 0, type;
>  	enum mmc_blk_status status;
>  	struct mmc_queue_req *mq_rq;
> -	struct request *req;
> +	struct request *req = rqc;
>  	struct mmc_async_req *areq;
> 
>  	if (!rqc && !mq->mqrq_prev->req)
> @@ -1292,6 +1292,16 @@ static int mmc_blk_issue_rw_rq(struct
> mmc_queue *mq, struct request *rqc)
> 
>  	do {
>  		if (rqc) {
> +			/*
> +			 * When 4KB native sector is enabled, only 8 blocks
> +			 * multiple read or write is allowed
> +			 */
> +			if ((brq->data.blocks & 0x07) &&
> +				(card->ext_csd.data_sector_size == 4096)) {
> +				pr_err("%s: Transfer size is not 4KB sector
> size aligned\n",
> +					req->rq_disk->disk_name);
> +				goto cmd_abort;
> +			}
>  			mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq);
>  			areq = &mq->mqrq_cur->mmc_active;
>  		} else
> @@ -1539,7 +1549,11 @@ static struct mmc_blk_data
> *mmc_blk_alloc_req(struct mmc_card *card,
>  	snprintf(md->disk->disk_name, sizeof(md->disk->disk_name),
>  		 "mmcblk%d%s", md->name_idx, subname ? subname : "");
> 
> -	blk_queue_logical_block_size(md->queue.queue, 512);
> +	if (mmc_card_mmc(card))
> +		blk_queue_logical_block_size(md->queue.queue,
> +			card->ext_csd.data_sector_size);
> +	else
> +		blk_queue_logical_block_size(md->queue.queue, 512);
>  	set_capacity(md->disk, size);
> 
>  	if (mmc_host_cmd23(card->host)) {
> diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index
> 7268c26..11444c6 100644
> --- a/drivers/mmc/core/mmc.c
> +++ b/drivers/mmc/core/mmc.c
> @@ -516,6 +516,8 @@ static int mmc_read_ext_csd(struct mmc_card *card,
> u8 *ext_csd)
>  		} else {
>  			card->ext_csd.data_tag_unit_size = 0;
>  		}
> +	} else {
> +		card->ext_csd.data_sector_size = 512;
>  	}
> 
>  out:
> --
> 1.7.4.3

Re: [PATCH v2 1/2] [MMC-4.5] Disable emulation

[Saugata Das]

On 17 May 2012 17:13, Subhash Jadavani <subhashj@codeaurora.org> wrote:
> Looks good to me.
> Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
>

Thanks Subhash, Namjae Jeon.

Chris, will you please merge this patch for your next release.


> Regards,
> Subhash
>
>> -----Original Message-----
>> From: Saugata Das [mailto:saugata.das@stericsson.com]
>> Sent: Thursday, May 17, 2012 4:32 PM
>> To: linux-mmc@vger.kernel.org
>> Cc: patches@linaro.org; saugata.das@linaro.org; subhashj@codeaurora.org;
>> arnd.bergmann@linaro.org; venkat@linaro.org; lporzio@micron.com;
>> linkinjeon@gmail.com
>> Subject: [PATCH v2 1/2] [MMC-4.5] Disable emulation
>>
>> From: Saugata Das <saugata.das@linaro.org>
>>
>> This patch adds the support for large sector size of 4KB by disabling
>> emulation.
>> This patch passes eMMC DATA_SECTOR_SIZE as the logical block size during
>> mmc_blk_alloc_req.
>>
>> In order to use this patch for 4KB sector size, ensure that
>> USE_NATIVE_SECTOR is enabled, partition table is 4KB sector size aligned
> and
>> file system block and sector size are 4KB multiples.
>>
>> Signed-off-by: Saugata Das <saugata.das@linaro.org>
>>
>> changes in v2:
>>       Updated description, added pr_err based on review feedback
>> ---
>>  drivers/mmc/card/block.c |   18 ++++++++++++++++--
>>  drivers/mmc/core/mmc.c   |    2 ++
>>  2 files changed, 18 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index
>> 91cda75..d628c5d 100644
>> --- a/drivers/mmc/card/block.c
>> +++ b/drivers/mmc/card/block.c
>> @@ -1284,7 +1284,7 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue
>> *mq, struct request *rqc)
>>       int ret = 1, disable_multi = 0, retry = 0, type;
>>       enum mmc_blk_status status;
>>       struct mmc_queue_req *mq_rq;
>> -     struct request *req;
>> +     struct request *req = rqc;
>>       struct mmc_async_req *areq;
>>
>>       if (!rqc && !mq->mqrq_prev->req)
>> @@ -1292,6 +1292,16 @@ static int mmc_blk_issue_rw_rq(struct
>> mmc_queue *mq, struct request *rqc)
>>
>>       do {
>>               if (rqc) {
>> +                     /*
>> +                      * When 4KB native sector is enabled, only 8 blocks
>> +                      * multiple read or write is allowed
>> +                      */
>> +                     if ((brq->data.blocks & 0x07) &&
>> +                             (card->ext_csd.data_sector_size == 4096)) {
>> +                             pr_err("%s: Transfer size is not 4KB sector
>> size aligned\n",
>> +                                     req->rq_disk->disk_name);
>> +                             goto cmd_abort;
>> +                     }
>>                       mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq);
>>                       areq = &mq->mqrq_cur->mmc_active;
>>               } else
>> @@ -1539,7 +1549,11 @@ static struct mmc_blk_data
>> *mmc_blk_alloc_req(struct mmc_card *card,
>>       snprintf(md->disk->disk_name, sizeof(md->disk->disk_name),
>>                "mmcblk%d%s", md->name_idx, subname ? subname : "");
>>
>> -     blk_queue_logical_block_size(md->queue.queue, 512);
>> +     if (mmc_card_mmc(card))
>> +             blk_queue_logical_block_size(md->queue.queue,
>> +                     card->ext_csd.data_sector_size);
>> +     else
>> +             blk_queue_logical_block_size(md->queue.queue, 512);
>>       set_capacity(md->disk, size);
>>
>>       if (mmc_host_cmd23(card->host)) {
>> diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index
>> 7268c26..11444c6 100644
>> --- a/drivers/mmc/core/mmc.c
>> +++ b/drivers/mmc/core/mmc.c
>> @@ -516,6 +516,8 @@ static int mmc_read_ext_csd(struct mmc_card *card,
>> u8 *ext_csd)
>>               } else {
>>                       card->ext_csd.data_tag_unit_size = 0;
>>               }
>> +     } else {
>> +             card->ext_csd.data_sector_size = 512;
>>       }
>>
>>  out:
>> --
>> 1.7.4.3
>
>

Re: [PATCH v2 1/2] [MMC-4.5] Disable emulation

[Chris Ball]

Hi,

On Thu, May 17 2012, Saugata Das wrote:
> From: Saugata Das <saugata.das@linaro.org>
>
> This patch adds the support for large sector size of 4KB by disabling emulation.
> This patch passes eMMC DATA_SECTOR_SIZE as the logical block size during
> mmc_blk_alloc_req.
>
> In order to use this patch for 4KB sector size, ensure that USE_NATIVE_SECTOR
> is enabled, partition table is 4KB sector size aligned and file system block
> and sector size are 4KB multiples.
>
> Signed-off-by: Saugata Das <saugata.das@linaro.org>

Thanks, pushed to mmc-next for 3.5.

- Chris.
-- 
Chris Ball   <cjb@laptop.org>   <http://printf.net/>
One Laptop Per Child

Re: [PATCH v2 2/2] [MMC-4.5] [MMC UTIL] Disable emulation

[Chris Ball]

Hi,

On Thu, May 17 2012, Saugata Das wrote:
> From: Saugata Das <saugata.das@linaro.org>
>
> In this patch, we add utility to disable emulation mode in the eMMC-4.5.
> This is done to increase the data sector size to 4KB.
>
> Signed-off-by: Saugata Das <saugata.das@linaro.org>
>
> changes in v2:
> 	Removed extra blank lines around do_disable_512B_emulation
> 	Review rework based on comments from Subhash
> ---

Pushed to mmc-utils, thanks!

(Please put your patch changelogs below the "---", so that they don't
end up in the commit message.)

- Chris.
-- 
Chris Ball   <cjb@laptop.org>   <http://printf.net/>
One Laptop Per Child