* [PATCH v4] mmc: core: Add default timeout value for CMD6.
@ 2011-09-22 2:12 Seungwon Jeon
2011-09-22 22:11 ` J Freyensee
2011-10-04 13:11 ` Adrian Hunter
0 siblings, 2 replies; 5+ messages in thread
From: Seungwon Jeon @ 2011-09-22 2:12 UTC (permalink / raw)
To: linux-mmc; +Cc: Chris Ball, linux-samsung-soc, kgene.kim, dh.han, Seungwon Jeon
EXT_CSD[248] includes the default maximum timeout for CMD6.
This field is added at eMMC4.5 Spec. And it can be used for default
timeout except for some operations which don't define the timeout(i.e.
background operation, sanitize, flush cache) in eMMC4.5 Spec.
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
---
drivers/mmc/core/mmc.c | 16 ++++++++++++----
include/linux/mmc/card.h | 1 +
include/linux/mmc/mmc.h | 1 +
3 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 5700b1c..b2ee14a 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -410,6 +410,12 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
else
card->erased_byte = 0x0;
+ if (card->ext_csd.rev >= 6)
+ card->ext_csd.generic_cmd6_time = 10 *
+ ext_csd[EXT_CSD_GENERIC_CMD6_TIME];
+ else
+ card->ext_csd.generic_cmd6_time = 0;
+
out:
return err;
}
@@ -668,7 +674,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
*/
if (card->ext_csd.enhanced_area_en) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
- EXT_CSD_ERASE_GROUP_DEF, 1, 0);
+ EXT_CSD_ERASE_GROUP_DEF, 1,
+ card->ext_csd.generic_cmd6_time);
if (err && err != -EBADMSG)
goto free_card;
@@ -711,7 +718,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
if ((card->ext_csd.hs_max_dtr != 0) &&
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
- EXT_CSD_HS_TIMING, 1, 0);
+ EXT_CSD_HS_TIMING, 1,
+ card->ext_csd.generic_cmd6_time);
if (err && err != -EBADMSG)
goto free_card;
@@ -783,7 +791,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][0],
- 0);
+ card->ext_csd.generic_cmd6_time);
if (!err) {
mmc_set_bus_width(card->host, bus_width);
@@ -806,7 +814,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][1],
- 0);
+ card->ext_csd.generic_cmd6_time);
}
if (err) {
printk(KERN_WARNING "%s: switch to bus width %d ddr %d "
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index b460fc2..b713abf 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -52,6 +52,7 @@ struct mmc_ext_csd {
u8 part_config;
unsigned int part_time; /* Units: ms */
unsigned int sa_timeout; /* Units: 100ns */
+ unsigned int generic_cmd6_time; /* Units: 10ms */
unsigned int hs_max_dtr;
unsigned int sectors;
unsigned int card_type;
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
index 5a794cb..e869f00 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -293,6 +293,7 @@ struct _mmc_csd {
#define EXT_CSD_SEC_ERASE_MULT 230 /* RO */
#define EXT_CSD_SEC_FEATURE_SUPPORT 231 /* RO */
#define EXT_CSD_TRIM_MULT 232 /* RO */
+#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */
/*
* EXT_CSD field definitions
--
1.7.0.4
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH v4] mmc: core: Add default timeout value for CMD6.
2011-09-22 2:12 [PATCH v4] mmc: core: Add default timeout value for CMD6 Seungwon Jeon
@ 2011-09-22 22:11 ` J Freyensee
2011-09-23 0:58 ` Seungwon Jeon
2011-10-04 13:11 ` Adrian Hunter
1 sibling, 1 reply; 5+ messages in thread
From: J Freyensee @ 2011-09-22 22:11 UTC (permalink / raw)
To: Seungwon Jeon; +Cc: linux-mmc, Chris Ball, linux-samsung-soc, kgene.kim, dh.han
On 09/21/2011 07:12 PM, Seungwon Jeon wrote:
> EXT_CSD[248] includes the default maximum timeout for CMD6.
> This field is added at eMMC4.5 Spec. And it can be used for default
> timeout except for some operations which don't define the timeout(i.e.
> background operation, sanitize, flush cache) in eMMC4.5 Spec.
Out of curiosity, what cache is being refered to in 'flush cache' comment?
>
> Signed-off-by: Seungwon Jeon<tgih.jun@samsung.com>
> ---
> drivers/mmc/core/mmc.c | 16 ++++++++++++----
> include/linux/mmc/card.h | 1 +
> include/linux/mmc/mmc.h | 1 +
> 3 files changed, 14 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
> index 5700b1c..b2ee14a 100644
> --- a/drivers/mmc/core/mmc.c
> +++ b/drivers/mmc/core/mmc.c
> @@ -410,6 +410,12 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
> else
> card->erased_byte = 0x0;
>
> + if (card->ext_csd.rev>= 6)
> + card->ext_csd.generic_cmd6_time = 10 *
> + ext_csd[EXT_CSD_GENERIC_CMD6_TIME];
> + else
> + card->ext_csd.generic_cmd6_time = 0;
> +
> out:
> return err;
> }
> @@ -668,7 +674,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
> */
> if (card->ext_csd.enhanced_area_en) {
> err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> - EXT_CSD_ERASE_GROUP_DEF, 1, 0);
> + EXT_CSD_ERASE_GROUP_DEF, 1,
> + card->ext_csd.generic_cmd6_time);
>
> if (err&& err != -EBADMSG)
> goto free_card;
> @@ -711,7 +718,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
> if ((card->ext_csd.hs_max_dtr != 0)&&
> (host->caps& MMC_CAP_MMC_HIGHSPEED)) {
> err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> - EXT_CSD_HS_TIMING, 1, 0);
> + EXT_CSD_HS_TIMING, 1,
> + card->ext_csd.generic_cmd6_time);
> if (err&& err != -EBADMSG)
> goto free_card;
>
> @@ -783,7 +791,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
> err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> EXT_CSD_BUS_WIDTH,
> ext_csd_bits[idx][0],
> - 0);
> + card->ext_csd.generic_cmd6_time);
> if (!err) {
> mmc_set_bus_width(card->host, bus_width);
>
> @@ -806,7 +814,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
> err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> EXT_CSD_BUS_WIDTH,
> ext_csd_bits[idx][1],
> - 0);
> + card->ext_csd.generic_cmd6_time);
> }
> if (err) {
> printk(KERN_WARNING "%s: switch to bus width %d ddr %d "
> diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
> index b460fc2..b713abf 100644
> --- a/include/linux/mmc/card.h
> +++ b/include/linux/mmc/card.h
> @@ -52,6 +52,7 @@ struct mmc_ext_csd {
> u8 part_config;
> unsigned int part_time; /* Units: ms */
> unsigned int sa_timeout; /* Units: 100ns */
> + unsigned int generic_cmd6_time; /* Units: 10ms */
> unsigned int hs_max_dtr;
> unsigned int sectors;
> unsigned int card_type;
> diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
> index 5a794cb..e869f00 100644
> --- a/include/linux/mmc/mmc.h
> +++ b/include/linux/mmc/mmc.h
> @@ -293,6 +293,7 @@ struct _mmc_csd {
> #define EXT_CSD_SEC_ERASE_MULT 230 /* RO */
> #define EXT_CSD_SEC_FEATURE_SUPPORT 231 /* RO */
> #define EXT_CSD_TRIM_MULT 232 /* RO */
> +#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */
>
> /*
> * EXT_CSD field definitions
> --
> 1.7.0.4
>
> --
> 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
--
J (James/Jay) Freyensee
Storage Technology Group
Intel Corporation
^ permalink raw reply [flat|nested] 5+ messages in thread* RE: [PATCH v4] mmc: core: Add default timeout value for CMD6.
2011-09-22 22:11 ` J Freyensee
@ 2011-09-23 0:58 ` Seungwon Jeon
0 siblings, 0 replies; 5+ messages in thread
From: Seungwon Jeon @ 2011-09-23 0:58 UTC (permalink / raw)
To: 'J Freyensee'
Cc: linux-mmc, 'Chris Ball', linux-samsung-soc, kgene.kim, dh.han
Hi,
J Freyensee wrote:
>
> On 09/21/2011 07:12 PM, Seungwon Jeon wrote:
> > EXT_CSD[248] includes the default maximum timeout for CMD6.
> > This field is added at eMMC4.5 Spec. And it can be used for default
> > timeout except for some operations which don't define the timeout(i.e.
> > background operation, sanitize, flush cache) in eMMC4.5 Spec.
>
> Out of curiosity, what cache is being refered to in 'flush cache' comment?
It is described in eMMC4.5 Spec.
Best regards,
Seungwon Jeon.
> >
> > Signed-off-by: Seungwon Jeon<tgih.jun@samsung.com>
> > ---
> > drivers/mmc/core/mmc.c | 16 ++++++++++++----
> > include/linux/mmc/card.h | 1 +
> > include/linux/mmc/mmc.h | 1 +
> > 3 files changed, 14 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
> > index 5700b1c..b2ee14a 100644
> > --- a/drivers/mmc/core/mmc.c
> > +++ b/drivers/mmc/core/mmc.c
> > @@ -410,6 +410,12 @@ static int mmc_read_ext_csd(struct mmc_card *card,
> u8 *ext_csd)
> > else
> > card->erased_byte = 0x0;
> >
> > + if (card->ext_csd.rev>= 6)
> > + card->ext_csd.generic_cmd6_time = 10 *
> > + ext_csd[EXT_CSD_GENERIC_CMD6_TIME];
> > + else
> > + card->ext_csd.generic_cmd6_time = 0;
> > +
> > out:
> > return err;
> > }
> > @@ -668,7 +674,8 @@ static int mmc_init_card(struct mmc_host *host, u32
> ocr,
> > */
> > if (card->ext_csd.enhanced_area_en) {
> > err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> > - EXT_CSD_ERASE_GROUP_DEF, 1, 0);
> > + EXT_CSD_ERASE_GROUP_DEF, 1,
> > + card->ext_csd.generic_cmd6_time);
> >
> > if (err&& err != -EBADMSG)
> > goto free_card;
> > @@ -711,7 +718,8 @@ static int mmc_init_card(struct mmc_host *host, u32
> ocr,
> > if ((card->ext_csd.hs_max_dtr != 0)&&
> > (host->caps& MMC_CAP_MMC_HIGHSPEED)) {
> > err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> > - EXT_CSD_HS_TIMING, 1, 0);
> > + EXT_CSD_HS_TIMING, 1,
> > + card->ext_csd.generic_cmd6_time);
> > if (err&& err != -EBADMSG)
> > goto free_card;
> >
> > @@ -783,7 +791,7 @@ static int mmc_init_card(struct mmc_host *host, u32
> ocr,
> > err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> > EXT_CSD_BUS_WIDTH,
> > ext_csd_bits[idx][0],
> > - 0);
> > + card->ext_csd.generic_cmd6_time);
> > if (!err) {
> > mmc_set_bus_width(card->host, bus_width);
> >
> > @@ -806,7 +814,7 @@ static int mmc_init_card(struct mmc_host *host, u32
> ocr,
> > err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> > EXT_CSD_BUS_WIDTH,
> > ext_csd_bits[idx][1],
> > - 0);
> > + card->ext_csd.generic_cmd6_time);
> > }
> > if (err) {
> > printk(KERN_WARNING "%s: switch to bus width %d ddr %d
> "
> > diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
> > index b460fc2..b713abf 100644
> > --- a/include/linux/mmc/card.h
> > +++ b/include/linux/mmc/card.h
> > @@ -52,6 +52,7 @@ struct mmc_ext_csd {
> > u8 part_config;
> > unsigned int part_time; /* Units: ms */
> > unsigned int sa_timeout; /* Units: 100ns */
> > + unsigned int generic_cmd6_time; /* Units: 10ms */
> > unsigned int hs_max_dtr;
> > unsigned int sectors;
> > unsigned int card_type;
> > diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
> > index 5a794cb..e869f00 100644
> > --- a/include/linux/mmc/mmc.h
> > +++ b/include/linux/mmc/mmc.h
> > @@ -293,6 +293,7 @@ struct _mmc_csd {
> > #define EXT_CSD_SEC_ERASE_MULT 230 /* RO */
> > #define EXT_CSD_SEC_FEATURE_SUPPORT 231 /* RO */
> > #define EXT_CSD_TRIM_MULT 232 /* RO */
> > +#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */
> >
> > /*
> > * EXT_CSD field definitions
> > --
> > 1.7.0.4
> >
> > --
> > 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
>
>
> --
> J (James/Jay) Freyensee
> Storage Technology Group
> Intel Corporation
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH v4] mmc: core: Add default timeout value for CMD6.
2011-09-22 2:12 [PATCH v4] mmc: core: Add default timeout value for CMD6 Seungwon Jeon
2011-09-22 22:11 ` J Freyensee
@ 2011-10-04 13:11 ` Adrian Hunter
2011-10-05 9:25 ` Seungwon Jeon
1 sibling, 1 reply; 5+ messages in thread
From: Adrian Hunter @ 2011-10-04 13:11 UTC (permalink / raw)
To: Seungwon Jeon; +Cc: linux-mmc, Chris Ball, linux-samsung-soc, kgene.kim, dh.han
On 22/09/11 05:12, Seungwon Jeon wrote:
> EXT_CSD[248] includes the default maximum timeout for CMD6.
> This field is added at eMMC4.5 Spec. And it can be used for default
> timeout except for some operations which don't define the timeout(i.e.
> background operation, sanitize, flush cache) in eMMC4.5 Spec.
>
> Signed-off-by: Seungwon Jeon<tgih.jun@samsung.com>
What about the mmc_switch() in mmc_select_powerclass()?
> ---
> drivers/mmc/core/mmc.c | 16 ++++++++++++----
> include/linux/mmc/card.h | 1 +
> include/linux/mmc/mmc.h | 1 +
> 3 files changed, 14 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
> index 5700b1c..b2ee14a 100644
> --- a/drivers/mmc/core/mmc.c
> +++ b/drivers/mmc/core/mmc.c
> @@ -410,6 +410,12 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
> else
> card->erased_byte = 0x0;
>
> + if (card->ext_csd.rev>= 6)
> + card->ext_csd.generic_cmd6_time = 10 *
> + ext_csd[EXT_CSD_GENERIC_CMD6_TIME];
> + else
> + card->ext_csd.generic_cmd6_time = 0;
> +
> out:
> return err;
> }
> @@ -668,7 +674,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
> */
> if (card->ext_csd.enhanced_area_en) {
> err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> - EXT_CSD_ERASE_GROUP_DEF, 1, 0);
> + EXT_CSD_ERASE_GROUP_DEF, 1,
> + card->ext_csd.generic_cmd6_time);
>
> if (err&& err != -EBADMSG)
> goto free_card;
> @@ -711,7 +718,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
> if ((card->ext_csd.hs_max_dtr != 0)&&
> (host->caps& MMC_CAP_MMC_HIGHSPEED)) {
> err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> - EXT_CSD_HS_TIMING, 1, 0);
> + EXT_CSD_HS_TIMING, 1,
> + card->ext_csd.generic_cmd6_time);
> if (err&& err != -EBADMSG)
> goto free_card;
>
> @@ -783,7 +791,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
> err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> EXT_CSD_BUS_WIDTH,
> ext_csd_bits[idx][0],
> - 0);
> + card->ext_csd.generic_cmd6_time);
> if (!err) {
> mmc_set_bus_width(card->host, bus_width);
>
> @@ -806,7 +814,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
> err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> EXT_CSD_BUS_WIDTH,
> ext_csd_bits[idx][1],
> - 0);
> + card->ext_csd.generic_cmd6_time);
> }
> if (err) {
> printk(KERN_WARNING "%s: switch to bus width %d ddr %d "
> diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
> index b460fc2..b713abf 100644
> --- a/include/linux/mmc/card.h
> +++ b/include/linux/mmc/card.h
> @@ -52,6 +52,7 @@ struct mmc_ext_csd {
> u8 part_config;
> unsigned int part_time; /* Units: ms */
> unsigned int sa_timeout; /* Units: 100ns */
> + unsigned int generic_cmd6_time; /* Units: 10ms */
Units are "ms" not "10ms" because you multiply by 10 in mmc_read_ext_csd
> unsigned int hs_max_dtr;
> unsigned int sectors;
> unsigned int card_type;
> diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
> index 5a794cb..e869f00 100644
> --- a/include/linux/mmc/mmc.h
> +++ b/include/linux/mmc/mmc.h
> @@ -293,6 +293,7 @@ struct _mmc_csd {
> #define EXT_CSD_SEC_ERASE_MULT 230 /* RO */
> #define EXT_CSD_SEC_FEATURE_SUPPORT 231 /* RO */
> #define EXT_CSD_TRIM_MULT 232 /* RO */
> +#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */
>
> /*
> * EXT_CSD field definitions
> --
> 1.7.0.4
>
> --
> 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
^ permalink raw reply [flat|nested] 5+ messages in thread* RE: [PATCH v4] mmc: core: Add default timeout value for CMD6.
2011-10-04 13:11 ` Adrian Hunter
@ 2011-10-05 9:25 ` Seungwon Jeon
0 siblings, 0 replies; 5+ messages in thread
From: Seungwon Jeon @ 2011-10-05 9:25 UTC (permalink / raw)
To: 'Adrian Hunter'
Cc: linux-mmc, 'Chris Ball', linux-samsung-soc, kgene.kim, dh.han
Adrian Hunter wrote:
> On 22/09/11 05:12, Seungwon Jeon wrote:
> > EXT_CSD[248] includes the default maximum timeout for CMD6.
> > This field is added at eMMC4.5 Spec. And it can be used for default
> > timeout except for some operations which don't define the timeout(i.e.
> > background operation, sanitize, flush cache) in eMMC4.5 Spec.
> >
> > Signed-off-by: Seungwon Jeon<tgih.jun@samsung.com>
>
> What about the mmc_switch() in mmc_select_powerclass()?
During submission with revision, mmc_select_powerclass() is not considered.
I'll apply it.
Thank you for catch.
>
> > ---
> > drivers/mmc/core/mmc.c | 16 ++++++++++++----
> > include/linux/mmc/card.h | 1 +
> > include/linux/mmc/mmc.h | 1 +
> > 3 files changed, 14 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
> > index 5700b1c..b2ee14a 100644
> > --- a/drivers/mmc/core/mmc.c
> > +++ b/drivers/mmc/core/mmc.c
> > @@ -410,6 +410,12 @@ static int mmc_read_ext_csd(struct mmc_card *card,
> u8 *ext_csd)
> > else
> > card->erased_byte = 0x0;
> >
> > + if (card->ext_csd.rev>= 6)
> > + card->ext_csd.generic_cmd6_time = 10 *
> > + ext_csd[EXT_CSD_GENERIC_CMD6_TIME];
> > + else
> > + card->ext_csd.generic_cmd6_time = 0;
> > +
> > out:
> > return err;
> > }
> > @@ -668,7 +674,8 @@ static int mmc_init_card(struct mmc_host *host, u32
> ocr,
> > */
> > if (card->ext_csd.enhanced_area_en) {
> > err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> > - EXT_CSD_ERASE_GROUP_DEF, 1, 0);
> > + EXT_CSD_ERASE_GROUP_DEF, 1,
> > + card->ext_csd.generic_cmd6_time);
> >
> > if (err&& err != -EBADMSG)
> > goto free_card;
> > @@ -711,7 +718,8 @@ static int mmc_init_card(struct mmc_host *host, u32
> ocr,
> > if ((card->ext_csd.hs_max_dtr != 0)&&
> > (host->caps& MMC_CAP_MMC_HIGHSPEED)) {
> > err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> > - EXT_CSD_HS_TIMING, 1, 0);
> > + EXT_CSD_HS_TIMING, 1,
> > + card->ext_csd.generic_cmd6_time);
> > if (err&& err != -EBADMSG)
> > goto free_card;
> >
> > @@ -783,7 +791,7 @@ static int mmc_init_card(struct mmc_host *host, u32
> ocr,
> > err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> > EXT_CSD_BUS_WIDTH,
> > ext_csd_bits[idx][0],
> > - 0);
> > + card->ext_csd.generic_cmd6_time);
> > if (!err) {
> > mmc_set_bus_width(card->host, bus_width);
> >
> > @@ -806,7 +814,7 @@ static int mmc_init_card(struct mmc_host *host, u32
> ocr,
> > err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> > EXT_CSD_BUS_WIDTH,
> > ext_csd_bits[idx][1],
> > - 0);
> > + card->ext_csd.generic_cmd6_time);
> > }
> > if (err) {
> > printk(KERN_WARNING "%s: switch to bus width %d ddr %d
> "
> > diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
> > index b460fc2..b713abf 100644
> > --- a/include/linux/mmc/card.h
> > +++ b/include/linux/mmc/card.h
> > @@ -52,6 +52,7 @@ struct mmc_ext_csd {
> > u8 part_config;
> > unsigned int part_time; /* Units: ms */
> > unsigned int sa_timeout; /* Units: 100ns */
> > + unsigned int generic_cmd6_time; /* Units: 10ms */
>
>
> Units are "ms" not "10ms" because you multiply by 10 in mmc_read_ext_csd
The above comment is aimed to highlight 10ms is mentioned in spec.
Yes, Units of generic_cmd6_time is "ms".
Depending on point of view, the meaning can be construed differently.
I will apply it.
>
> > unsigned int hs_max_dtr;
> > unsigned int sectors;
> > unsigned int card_type;
> > diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
> > index 5a794cb..e869f00 100644
> > --- a/include/linux/mmc/mmc.h
> > +++ b/include/linux/mmc/mmc.h
> > @@ -293,6 +293,7 @@ struct _mmc_csd {
> > #define EXT_CSD_SEC_ERASE_MULT 230 /* RO */
> > #define EXT_CSD_SEC_FEATURE_SUPPORT 231 /* RO */
> > #define EXT_CSD_TRIM_MULT 232 /* RO */
> > +#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */
> >
> > /*
> > * EXT_CSD field definitions
> > --
> > 1.7.0.4
> >
> > --
> > 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
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-10-05 9:25 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-09-22 2:12 [PATCH v4] mmc: core: Add default timeout value for CMD6 Seungwon Jeon
2011-09-22 22:11 ` J Freyensee
2011-09-23 0:58 ` Seungwon Jeon
2011-10-04 13:11 ` Adrian Hunter
2011-10-05 9:25 ` Seungwon Jeon
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