| Message ID | 1300794050-5170-1-git-send-email-chander.kashyap@linaro.org |
|---|---|
| State | Accepted |
| Commit | f69bb511455513a61c25783414240258f13f3371 |
| Headers | show |
Dear Chander Kashyap, On 22 March 2011 20:40, Chander Kashyap <chander.kashyap@linaro.org> wrote: > Blocksize was hardcoded to 512 bytes. But the blocksize varies > depeding on various mmc subsystem commands (between 8 and 512). > This hardcoding was resulting in interrupt error during data > transfer. > > It is now calculated based upon the request sent by mmc subsystem. > > Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org> > --- > drivers/mmc/s5p_mmc.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/drivers/mmc/s5p_mmc.c b/drivers/mmc/s5p_mmc.c > index 195b5be..0323800 100644 > --- a/drivers/mmc/s5p_mmc.c > +++ b/drivers/mmc/s5p_mmc.c > @@ -51,7 +51,7 @@ static void mmc_prepare_data(struct mmc_host *host, struct mmc_data *data) > writeb(ctrl, &host->reg->hostctl); > > /* We do not handle DMA boundaries, so set it to max (512 KiB) */ > - writew((7 << 12) | (512 << 0), &host->reg->blksize); > + writew((7 << 12) | (data->blocksize & 0xFFF), &host->reg->blksize); > writew(data->blocks, &host->reg->blkcnt); > } > > -- > 1.7.1 > applied to u-boot-samsung. Thanks Minkyu Kang
Hi Minkyu, On Thu, Mar 24, 2011 at 3:46 AM, Minkyu Kang <promsoft@gmail.com> wrote: > Dear Chander Kashyap, > > On 22 March 2011 20:40, Chander Kashyap <chander.kashyap@linaro.org> wrote: >> Blocksize was hardcoded to 512 bytes. But the blocksize varies >> depeding on various mmc subsystem commands (between 8 and 512). >> This hardcoding was resulting in interrupt error during data >> transfer. >> >> It is now calculated based upon the request sent by mmc subsystem. >> >> Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org> >> --- >> drivers/mmc/s5p_mmc.c | 2 +- >> 1 files changed, 1 insertions(+), 1 deletions(-) >> >> diff --git a/drivers/mmc/s5p_mmc.c b/drivers/mmc/s5p_mmc.c >> index 195b5be..0323800 100644 >> --- a/drivers/mmc/s5p_mmc.c >> +++ b/drivers/mmc/s5p_mmc.c >> @@ -51,7 +51,7 @@ static void mmc_prepare_data(struct mmc_host *host, struct mmc_data *data) >> writeb(ctrl, &host->reg->hostctl); >> >> /* We do not handle DMA boundaries, so set it to max (512 KiB) */ >> - writew((7 << 12) | (512 << 0), &host->reg->blksize); >> + writew((7 << 12) | (data->blocksize & 0xFFF), &host->reg->blksize); >> writew(data->blocks, &host->reg->blkcnt); >> } >> >> -- >> 1.7.1 >> > > applied to u-boot-samsung. I have sent some patches about mmc and reviewed one, can you please tell me what to do mainline them? 11 mar : [PATCH 1/3][v3] mmc: checking status after commands with R1b response --> it has one Tested-by [RFC 2/3][v3] mmc: SEND_OP_COND considers card capabilities (voltage) --> it has one Tested-by [PATCH 3/3][v3] mmc: trace added --> useful for getting information 23 mar : [U-Boot] [PATCH] MMC may wrongly regconize 2GB eMMC as high capacity --> I have reviewed and proposed a different, I think better and simpler, way. There is a curious dependency between capacity and high_capacity variables. Regards, Raffaele
Dear Raffaele Recalcati, On 3 April 2011 13:39, Raffaele Recalcati <lamiaposta71@gmail.com> wrote: > Hi Minkyu, > > I have sent some patches about mmc and reviewed one, can you please > tell me what to do mainline them? > > 11 mar : > [PATCH 1/3][v3] mmc: checking status after commands with R1b response > --> it has one Tested-by > > [RFC 2/3][v3] mmc: SEND_OP_COND considers card capabilities (voltage) > --> it has one Tested-by > [PATCH 3/3][v3] mmc: trace added --> useful for getting information > > 23 mar : > [U-Boot] [PATCH] MMC may wrongly regconize 2GB eMMC as high capacity > --> I have reviewed and proposed a different, I think better and simpler, way. > There is a curious dependency between capacity and high_capacity variables. > I'm not a maintainer of mmc. Please ask to Andy Fleming. Andy, could you please check Raffaele's patches? Thanks Minkyu Kang.
diff --git a/drivers/mmc/s5p_mmc.c b/drivers/mmc/s5p_mmc.c index 195b5be..0323800 100644 --- a/drivers/mmc/s5p_mmc.c +++ b/drivers/mmc/s5p_mmc.c @@ -51,7 +51,7 @@ static void mmc_prepare_data(struct mmc_host *host, struct mmc_data *data) writeb(ctrl, &host->reg->hostctl); /* We do not handle DMA boundaries, so set it to max (512 KiB) */ - writew((7 << 12) | (512 << 0), &host->reg->blksize); + writew((7 << 12) | (data->blocksize & 0xFFF), &host->reg->blksize); writew(data->blocks, &host->reg->blkcnt); }
Blocksize was hardcoded to 512 bytes. But the blocksize varies depeding on various mmc subsystem commands (between 8 and 512). This hardcoding was resulting in interrupt error during data transfer. It is now calculated based upon the request sent by mmc subsystem. Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org> --- drivers/mmc/s5p_mmc.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)