[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Tony Lindgren]

Hi all,

Got a zoom3 finally! This is needed to boot with DEBUG_LL + earlyprintk.

Regards,

Tony

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Tony Lindgren]

* Tony Lindgren <tony@atomide.com> [100319 17:30]:
> Hi all,
> 
> Got a zoom3 finally! This is needed to boot with DEBUG_LL + earlyprintk.

And of course it won't compile because of a missing #.
Here's the working version.

Tony

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Tony Lindgren]

* Tony Lindgren <tony@atomide.com> [100319 17:42]:
> * Tony Lindgren <tony@atomide.com> [100319 17:30]:
> > Hi all,
> > 
> > Got a zoom3 finally! This is needed to boot with DEBUG_LL + earlyprintk.
> 
> And of course it won't compile because of a missing #.
> Here's the working version.

One more time. Looks like what I posted is not enough, we
also need to make sure the mapping does not overlap with
other regions. So basically we can't use 0xfb000000 like
we currently have, let's use 0xf7000000 instead unless
somebody has better ideas.

Regards,

Tony

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Tony Lindgren]

* Tony Lindgren <tony@atomide.com> [100319 19:43]:
> * Tony Lindgren <tony@atomide.com> [100319 17:42]:
> > * Tony Lindgren <tony@atomide.com> [100319 17:30]:
> > > Hi all,
> > > 
> > > Got a zoom3 finally! This is needed to boot with DEBUG_LL + earlyprintk.
> > 
> > And of course it won't compile because of a missing #.
> > Here's the working version.
> 
> One more time. Looks like what I posted is not enough, we
> also need to make sure the mapping does not overlap with
> other regions. So basically we can't use 0xfb000000 like
> we currently have, let's use 0xf7000000 instead unless
> somebody has better ideas.

And now 0xf7000000 is in vmalloc area.. Needs to be looked
more.

Tony

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Pandita, Vikram]

> -----Original Message-----
> From: Tony Lindgren [mailto:tony at atomide.com]
> Sent: Friday, March 19, 2010 10:03 PM
> To: linux-arm-kernel at lists.infradead.org; linux-omap at vger.kernel.org
> Cc: Pais, Allen; Pandita, Vikram
> Subject: Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3
> 
> * Tony Lindgren <tony@atomide.com> [100319 19:43]:
> > * Tony Lindgren <tony@atomide.com> [100319 17:42]:
> > > * Tony Lindgren <tony@atomide.com> [100319 17:30]:
> > > > Hi all,
> > > >
> > > > Got a zoom3 finally! This is needed to boot with DEBUG_LL +
> earlyprintk.
> > >
> > > And of course it won't compile because of a missing #.
> > > Here's the working version.
> >
> > One more time. Looks like what I posted is not enough, we
> > also need to make sure the mapping does not overlap with
> > other regions. So basically we can't use 0xfb000000 like
> > we currently have, let's use 0xf7000000 instead unless
> > somebody has better ideas.
> 
> And now 0xf7000000 is in vmalloc area.. Needs to be looked
> more.

On internal TI trees, we do have 0xfa400000 working.
Guess that is the magic number.

> 
> Tony

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Tony Lindgren]

* Pandita, Vikram <vikram.pandita@ti.com> [100320 15:56]:
> 
> 
> > -----Original Message-----
> > From: Tony Lindgren [mailto:tony at atomide.com]
> > Sent: Friday, March 19, 2010 10:03 PM
> > To: linux-arm-kernel at lists.infradead.org; linux-omap at vger.kernel.org
> > Cc: Pais, Allen; Pandita, Vikram
> > Subject: Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3
> > 
> > * Tony Lindgren <tony@atomide.com> [100319 19:43]:
> > > * Tony Lindgren <tony@atomide.com> [100319 17:42]:
> > > > * Tony Lindgren <tony@atomide.com> [100319 17:30]:
> > > > > Hi all,
> > > > >
> > > > > Got a zoom3 finally! This is needed to boot with DEBUG_LL +
> > earlyprintk.
> > > >
> > > > And of course it won't compile because of a missing #.
> > > > Here's the working version.
> > >
> > > One more time. Looks like what I posted is not enough, we
> > > also need to make sure the mapping does not overlap with
> > > other regions. So basically we can't use 0xfb000000 like
> > > we currently have, let's use 0xf7000000 instead unless
> > > somebody has better ideas.
> > 
> > And now 0xf7000000 is in vmalloc area.. Needs to be looked
> > more.
> 
> On internal TI trees, we do have 0xfa400000 working.
> Guess that is the magic number.

Great and thanks for pointing out that hole in the mapping.

Here's an updated version of this patch using 0xfa400000. Few
other things had to be updated accordingly.

Regards,

Tony

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Pais, Allen]

 
> > > Hi all,
> > > 
> > > Got a zoom3 finally! This is needed to boot with DEBUG_LL 
> + earlyprintk.
> > 
> > And of course it won't compile because of a missing #.
> > Here's the working version.
> 
> One more time. Looks like what I posted is not enough, we
> also need to make sure the mapping does not overlap with
> other regions. So basically we can't use 0xfb000000 like
> we currently have, let's use 0xf7000000 instead unless
> somebody has better ideas.

 With this patch[DEBUG_LL + earlyprintk],
 I still haven't been able to boot the kernel.
 Is it working on your side.
  
 The commit am using is : a842b5f9ce70e1b738eabb4d719860070180ed1c

- Allen

> 
> Regards,
> 
> Tony
> 

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Tony Lindgren]

* Pais, Allen <allen.pais@ti.com> [100322 00:14]:
>  
> > > > Hi all,
> > > > 
> > > > Got a zoom3 finally! This is needed to boot with DEBUG_LL 
> > + earlyprintk.
> > > 
> > > And of course it won't compile because of a missing #.
> > > Here's the working version.
> > 
> > One more time. Looks like what I posted is not enough, we
> > also need to make sure the mapping does not overlap with
> > other regions. So basically we can't use 0xfb000000 like
> > we currently have, let's use 0xf7000000 instead unless
> > somebody has better ideas.
> 
>  With this patch[DEBUG_LL + earlyprintk],
>  I still haven't been able to boot the kernel.
>  Is it working on your side.
>   
>  The commit am using is : a842b5f9ce70e1b738eabb4d719860070180ed1c

I think you will also need the 3630 serial fixes series posted
recently.

I just merged those into omap-fixes-for-linus (and master)
branch(es). Maybe give it a try with at commit
b3c7740a120c8a7775cb63b4d094466da5c01692 + this patch?

BTW, I'm still seeing mux errors on zoom3, have not yet
looked into those.

Regards,

Tony

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Tony Lindgren]

* Tony Lindgren <tony@atomide.com> [100322 14:15]:
> 
> BTW, I'm still seeing mux errors on zoom3, have not yet
> looked into those.

Looks like we're currently missing these pins. Still need
to be checked for GPIO values and modes though, posting just
for reference as this fixes the "mux: Unknown ball offset"
on 3630.

Regards,

Tony

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Pais, Allen]

> > 
> >  With this patch[DEBUG_LL + earlyprintk],
> >  I still haven't been able to boot the kernel.
> >  Is it working on your side.
> >   
> >  The commit am using is : a842b5f9ce70e1b738eabb4d719860070180ed1c
> 
> I think you will also need the 3630 serial fixes series posted
> recently.
> 
> I just merged those into omap-fixes-for-linus (and master)
> branch(es). Maybe give it a try with at commit
> b3c7740a120c8a7775cb63b4d094466da5c01692 + this patch?

  Thanks, I'll pull in those fixes. 
 I believe the mux errors are fixed. Have a look at
 http://dev.omapzoom.org/?p=manju/kernel-omap3-dev.git;a=commit;h=3499f5023ee90dc6ee3868a3147b87fe22a1d9b7

 Patch must have been missed some how.

- Allen

> 
> BTW, I'm still seeing mux errors on zoom3, have not yet
> looked into those.
> 
> Regards,
> 
> Tony
> 

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Tony Lindgren]

* Pais, Allen <allen.pais@ti.com> [100322 22:42]:
> > > 
> > >  With this patch[DEBUG_LL + earlyprintk],
> > >  I still haven't been able to boot the kernel.
> > >  Is it working on your side.
> > >   
> > >  The commit am using is : a842b5f9ce70e1b738eabb4d719860070180ed1c
> > 
> > I think you will also need the 3630 serial fixes series posted
> > recently.
> > 
> > I just merged those into omap-fixes-for-linus (and master)
> > branch(es). Maybe give it a try with at commit
> > b3c7740a120c8a7775cb63b4d094466da5c01692 + this patch?
> 
>   Thanks, I'll pull in those fixes. 
>  I believe the mux errors are fixed. Have a look at
>  http://dev.omapzoom.org/?p=manju/kernel-omap3-dev.git;a=commit;h=3499f5023ee90dc6ee3868a3147b87fe22a1d9b7
> 
>  Patch must have been missed some how.

OK, we really should get fixes like that to mainline kernel ASAP
to avoid duplicating the effort.

Then at least one issue remains for zoom3 to be usable..
I'm getting tons of MMC errors trying to mount root on it:

mmcblk1: error -110 transferring data, sector 2097024, nr 8, card status 0x900  
end_request: I/O error, dev mmcblk1, sector 2097024
...

Any ideas if that's fixed somewhere also?

Regards,

Tony

mmc errors (was Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3)

[Nishanth Menon]

Tony Lindgren had written, on 03/23/2010 10:27 AM, the following:
[...]
> Then at least one issue remains for zoom3 to be usable..
> I'm getting tons of MMC errors trying to mount root on it:
> 
> mmcblk1: error -110 transferring data, sector 2097024, nr 8, card status 0x900  
> end_request: I/O error, dev mmcblk1, sector 2097024
> ...
> 
I have seen this on few platforms and seem to be related to eMMC usage.

> Any ideas if that's fixed somewhere also?
Madhu, any comments?

-- 
Regards,
Nishanth Menon

mmc errors (was Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3)

[Madhusudhan]

Hi Nishant,

The eMMC on Zoom2 has an issue with respect to detection as a high capacity
card. This was discussed on the list with Pierre sometime back. I don't have
an acceptable solution to make this device work. Rather I prefer to submit a
patch which disables MMC2 on these boards.

You can still use MMC1 to mount your file system. This is the card you can
plug in to the cage.

Regards,
Madhu

> -----Original Message-----
> From: Nishanth Menon [mailto:nm at ti.com]
> Sent: Tuesday, March 23, 2010 5:49 PM
> To: Tony Lindgren
> Cc: Pais, Allen; linux-arm-kernel at lists.infradead.org; linux-
> omap at vger.kernel.org; Pandita, Vikram; Madhusudhan Chikkature Rajashekar
> Subject: mmc errors (was Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3)
> 
> Tony Lindgren had written, on 03/23/2010 10:27 AM, the following:
> [...]
> > Then at least one issue remains for zoom3 to be usable..
> > I'm getting tons of MMC errors trying to mount root on it:
> >
> > mmcblk1: error -110 transferring data, sector 2097024, nr 8, card status
> 0x900
> > end_request: I/O error, dev mmcblk1, sector 2097024
> > ...
> >
> I have seen this on few platforms and seem to be related to eMMC usage.
> 
> > Any ideas if that's fixed somewhere also?
> Madhu, any comments?
> 
> --
> Regards,
> Nishanth Menon

mmc errors (was Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3)

[Madhusudhan]

> -----Original Message-----
> From: Madhusudhan [mailto:madhu.cr at ti.com]
> Sent: Wednesday, March 24, 2010 10:31 AM
> To: 'Nishanth Menon'; 'Tony Lindgren'
> Cc: 'Pais, Allen'; 'linux-arm-kernel at lists.infradead.org'; 'linux-
> omap at vger.kernel.org'; 'Pandita, Vikram'
> Subject: RE: mmc errors (was Re: [PATCH] arm: Fix DEBUG_LL for omap
> zoom2/3)
> 
> Hi Nishant,
> 
> The eMMC on Zoom2 has an issue with respect to detection as a high
> capacity card. This was discussed on the list with Pierre sometime back. I
> don't have an acceptable solution to make this device work. Rather I
> prefer to submit a patch which disables MMC2 on these boards.
> 
> You can still use MMC1 to mount your file system. This is the card you can
> plug in to the cage.
> 
> Regards,
> Madhu
> 
> > -----Original Message-----
> > From: Nishanth Menon [mailto:nm at ti.com]
> > Sent: Tuesday, March 23, 2010 5:49 PM
> > To: Tony Lindgren
> > Cc: Pais, Allen; linux-arm-kernel at lists.infradead.org; linux-
> > omap at vger.kernel.org; Pandita, Vikram; Madhusudhan Chikkature Rajashekar
> > Subject: mmc errors (was Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3)
> >
> > Tony Lindgren had written, on 03/23/2010 10:27 AM, the following:
> > [...]
> > > Then at least one issue remains for zoom3 to be usable..
> > > I'm getting tons of MMC errors trying to mount root on it:
> > >
> > > mmcblk1: error -110 transferring data, sector 2097024, nr 8, card
> status
> > 0x900
> > > end_request: I/O error, dev mmcblk1, sector 2097024
> > > ...
> > >
> > I have seen this on few platforms and seem to be related to eMMC usage.
> >
> > > Any ideas if that's fixed somewhere also?
> > Madhu, any comments?
> >
> > --
> > Regards,
> > Nishanth Menon

mmc errors (was Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3)

[Madhusudhan]

> -----Original Message-----
> From: Nishanth Menon [mailto:nm at ti.com]
> Sent: Tuesday, March 23, 2010 5:49 PM
> To: Tony Lindgren
> Cc: Pais, Allen; linux-arm-kernel at lists.infradead.org; linux-
> omap at vger.kernel.org; Pandita, Vikram; Madhusudhan Chikkature Rajashekar
> Subject: mmc errors (was Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3)
> 
> Tony Lindgren had written, on 03/23/2010 10:27 AM, the following:
> [...]
> > Then at least one issue remains for zoom3 to be usable..
> > I'm getting tons of MMC errors trying to mount root on it:
> >
> > mmcblk1: error -110 transferring data, sector 2097024, nr 8, card status
> 0x900
> > end_request: I/O error, dev mmcblk1, sector 2097024
> > ...
> >
> I have seen this on few platforms and seem to be related to eMMC usage.
> 
> > Any ideas if that's fixed somewhere also?
> Madhu, any comments?
> 
Sorry about multiple replies to this mail. Just wanted to avoid top posting.

The eMMC on Zoom2 has an issue with respect to detection as a high
capacity card. This was discussed on the list with Pierre sometime back. I
don't have an acceptable solution to make this device work. Rather I
prefer to submit a patch which disables MMC2 on these boards.
 
You can still use MMC1 to mount your file system. This is the card you can
plug in to the cage.
 
Regards,
Madhu

> --
> Regards,
> Nishanth Menon

mmc errors (was Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3)

[Laurent Epinat]

Hello all

I've juste finished a modification about a multi eMMC on own platform.
we used 4 eMMC of 32Gib (micron MTFC32GHKD) on same host (MMC1) and we used it like de big device (128Gib)

I had a similar problem (It was the pbias 1 configuration)

I can't test the effect on SD card
any comments...



diff --git a/drivers/mmc/card/Kconfig b/drivers/mmc/card/Kconfig
index 3f2a912..6054441 100644
--- a/drivers/mmc/card/Kconfig
+++ b/drivers/mmc/card/Kconfig
@@ -32,6 +32,19 @@ config MMC_BLOCK_BOUNCE

  	  If unsure, say Y here.

+config MULTI_MMC_AS_ONE
+	bool "Simulate multi mmc card as one big"
+	depends on MMC_BLOCK && MULTI_MMC_ON_HOST
+	default y
+	help
+	  A multiple SD/MMC card can be connected on a single host controller.
+	  with this you can see a large device.
+
+	  Say N here if you want to see as multiple storage devices
+
+	  If unsure, say N here.
+
+
  config SDIO_UART
  	tristate "SDIO UART/GPS class support"
  	help
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 1f552c6..a368ecb 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -16,6 +16,12 @@
   *
   * Author:  Andrew Christian
   *          28 May 2002
+ *
+ * 20100315	
+ *          Laurent Epinat <laurent.epinat@cioinfoindus.fr>
+ * Add multi "card" on one controller
+ * seen as multi card or as one big card
+ *
   */
  #include <linux/moduleparam.h>
  #include <linux/module.h>
@@ -41,6 +47,10 @@

  #include "queue.h"

+#ifdef CONFIG_MULTI_MMC_ON_HOST
+#include "../core/mmc_ops.h"
+#endif
+
  MODULE_ALIAS("mmc:block");

  /*
@@ -248,6 +258,13 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
  	struct mmc_blk_request brq;
  	int ret = 1, disable_multi = 0;

+#ifdef CONFIG_MULTI_MMC_ON_HOST
+static struct mmc_card *card_cur=NULL;
+int card_size;
+#ifdef CONFIG_MULTI_MMC_AS_ONE
+	int idx;
+#endif
+#endif
  	mmc_claim_host(card->host);

  	do {
@@ -261,6 +278,17 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
  		brq.cmd.arg = blk_rq_pos(req);
  		if (!mmc_card_blockaddr(card))
  			brq.cmd.arg <<= 9;
+#ifdef CONFIG_MULTI_MMC_ON_HOST
+		else {
+			/* All cards as a seem size */
+			/* TODO: check for card <2Gb (ext_csd is 0 );and
+			 * calculation for a size different
+			 **/
+			BUG_ON(!card->ext_csd.sectors);
+			card_size = card->ext_csd.sectors;
+		}
+#endif
+			
  		brq.cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
  		brq.data.blksz = 512;
  		brq.stop.opcode = MMC_STOP_TRANSMISSION;
@@ -273,9 +301,39 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
  		 * restrictions, so we need to be prepared for too big
  		 * requests.
  		 */
-		if (brq.data.blocks > card->host->max_blk_count)
+		if (brq.data.blocks > card->host->max_blk_count)
  			brq.data.blocks = card->host->max_blk_count;

+#ifdef CONFIG_MULTI_MMC_ON_HOST
+#ifdef CONFIG_MULTI_MMC_AS_ONE
+		idx = (brq.cmd.arg/card_size);
+		/* Force to select a new card if necessary */
+		if (card != card->host->cards[idx]) {
+			card = card->host->cards[idx];
+			card_size = card->ext_csd.sectors;
+			brq.cmd.arg -= idx * card_size;
+		}
+		/*
+		 * Check if the block can go the selected card
+		 * if not truc it
+		 */
+		if (brq.cmd.arg + brq.data.blocks >  card_size) {
+			brq.data.blocks = card_size - brq.cmd.arg;
+		}
+#endif /* CONFIG_MULTI_MMC_AS_ONE */
+
+		/* Change the current mmc on bus if needed */
+		if (card != card_cur){
+			if (!mmc_select_card(card)) {
+				card_cur=card;
+			}
+			else {
+				printk(KERN_ERR "%s: error: Can't select Card %d\n",
+								req->rq_disk->disk_name, card->rca);
+			}
+		}
+#endif /* CONFIG_MULTI_MMC_ON_HOST */
+
  		/*
  		 * After a read error, we redo the request one sector at a time
  		 * in order to accurately determine which sectors can be read
@@ -481,6 +539,12 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
  	struct mmc_blk_data *md;
  	int devidx, ret;

+#ifdef CONFIG_MULTI_MMC_AS_ONE
+	struct mmc_host *host = card->host;
+	int i;
+	int sec_num;
+#endif
+
  	devidx = find_first_zero_bit(dev_use, MMC_NUM_MINORS);
  	if (devidx >= MMC_NUM_MINORS)
  		return ERR_PTR(-ENOSPC);
@@ -492,7 +556,6 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
  		goto out;
  	}

-
  	/*
  	 * Set the read-only status based on the supported commands
  	 * and the write protect switch.
@@ -543,15 +606,47 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
  		 * The EXT_CSD sector count is in number or 512 byte
  		 * sectors.
  		 */
+#ifdef CONFIG_MULTI_MMC_AS_ONE
+		for (i=0;i<host->card_detected;++i){
+			sec_num+=host->cards[i]->ext_csd.sectors;
+		}
+		set_capacity(md->disk, sec_num);
+#else
  		set_capacity(md->disk, card->ext_csd.sectors);
+#endif
  	} else {
  		/*
  		 * The CSD capacity field is in units of read_blkbits.
  		 * set_capacity takes units of 512 bytes.
  		 */
-		set_capacity(md->disk,
-			card->csd.capacity << (card->csd.read_blkbits - 9));
+#ifdef MMC_MULTI_CARD_AS_ONE
+		for (i=0; i<host->card_detected; ++i){
+			sec_num += host->cards[i]->csd.capacity <<
+									(host->cards[i]->csd.read_blkbits - 9)
+		}
+		set_capacity(md->disk, sec_num);
+#else
+		set_capacity(md->disk,
+						card->csd.capacity << (card->csd.read_blkbits - 9));
+#endif
  	}
+
+#if defined(CONFIG_MULTI_MMC_ON_HOST)
+{
+	/* deselect cards without waiting for completion */
+	struct mmc_request mrq={0};
+	struct mmc_command cmd={0};
+
+	cmd.opcode = MMC_SELECT_CARD;
+	cmd.arg = 0; /* deselect cards */
+	cmd.flags = MMC_RSP_NONE | MMC_CMD_AC;
+	mrq.cmd = &cmd;
+	mrq.cmd->mrq = &mrq;
+	
+	card->host->ops->request(card->host, &mrq);
+}
+#endif
+
  	return md;

   err_putdisk:
diff --git a/drivers/mmc/core/Kconfig b/drivers/mmc/core/Kconfig
index bb22ffd..b3c854e 100644
--- a/drivers/mmc/core/Kconfig
+++ b/drivers/mmc/core/Kconfig
@@ -16,3 +16,8 @@ config MMC_UNSAFE_RESUME

  	  This option sets a default which can be overridden by the
  	  module parameter "removable=0" or "removable=1".
+
+config MULTI_MMC_ON_HOST
+	bool "Detect multiple MMC/SD cards one same host controller"
+	help
+	  If you say Y here, the MMC layer scan the bus to discover MMC cards
diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index bdb165f..badec96 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -221,7 +222,9 @@ struct mmc_card *mmc_alloc_card(struct mmc_host *host, struct device_type *type)
   */
  int mmc_add_card(struct mmc_card *card)
  {
+#ifndef CONFIG_MULTI_MMC_AS_ONE
  	int ret;
+#endif
  	const char *type;

  	dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card->host), card->rca);
@@ -255,9 +258,11 @@ int mmc_add_card(struct mmc_card *card)
  			type, card->rca);
  	}

+#ifndef CONFIG_MULTI_MMC_AS_ONE
  	ret = device_add(&card->dev);
  	if (ret)
  		return ret;
+#endif

  #ifdef CONFIG_DEBUG_FS
  	mmc_add_card_debugfs(card);
@@ -286,7 +291,9 @@ void mmc_remove_card(struct mmc_card *card)
  			printk(KERN_INFO "%s: card %04x removed\n",
  				mmc_hostname(card->host), card->rca);
  		}
+#ifndef CONFIG_MULTI_MMC_AS_ONE
  		device_del(&card->dev);
+#endif
  	}

  	put_device(&card->dev);
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 30acd52..b186933 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -910,9 +910,9 @@ static void mmc_power_up(struct mmc_host *host)
  	if (host->f_min > 400000) {
  		pr_warning("%s: Minimum clock frequency too high for "
  				"identification mode\n", mmc_hostname(host));
-		host->ios.clock = host->f_min;
-	} else
  		host->ios.clock = 400000;
+	} else
+		host->ios.clock = host->f_min;

  	host->ios.power_mode = MMC_POWER_ON;
  	mmc_set_ios(host);
@@ -1164,8 +1164,6 @@ void mmc_stop_host(struct mmc_host *host)
  	}
  	mmc_bus_put(host);

-	BUG_ON(host->card);
-
  	mmc_power_off(host);
  }

@@ -1235,10 +1233,21 @@ EXPORT_SYMBOL(mmc_card_sleep);

  int mmc_card_can_sleep(struct mmc_host *host)
  {
+
+#ifdef CONFIG_MULTI_MMC_ON_HOST
+	struct mmc_card *card;
+	int i;
+	for (i=0; i<host->card_detected;++i){
+		card = host->cards[i];
+		if (card && mmc_card_mmc(card) && card->ext_csd.rev >= 3)
+			return 1;
+	}
+#else
  	struct mmc_card *card = host->card;

  	if (card && mmc_card_mmc(card) && card->ext_csd.rev >= 3)
  		return 1;
+#endif
  	return 0;
  }
  EXPORT_SYMBOL(mmc_card_can_sleep);
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 0eac6c8..e29d1bd 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -5,6 +5,11 @@
   *  Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
   *  MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved.
   *
+ * 20100315
+ *          Laurent Epinat <laurent.epinat@cioinfoindus.fr>
+ * Add multi "card" detection on one controller
+ * they can be seen as multi card or as one big card
+ *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
@@ -224,6 +229,11 @@ static int mmc_read_ext_csd(struct mmc_card *card)
  		if (card->ext_csd.sectors)
  			mmc_card_set_blockaddr(card);
  	}
+	else {
+		/* TODO: In MULTI CARD we need the size to select the crad on the bus */
+		WARN_ON(!card->ext_csd.sectors);
+
+	}

  	switch (ext_csd[EXT_CSD_CARD_TYPE]) {
  	case EXT_CSD_CARD_TYPE_52 | EXT_CSD_CARD_TYPE_26:
@@ -293,6 +303,261 @@ static struct device_type mmc_type = {
  	.groups = mmc_attr_groups,
  };

+#ifdef CONFIG_MULTI_MMC_ON_HOST
+/*
+ * Handle the detection and initialisation of a cards.
+ *
+ * In the case of a resume, "rescan" will contain a flag and
+ * we're trying to reinitialise all cards.
+ */
+static int mmc_init_cards(struct mmc_host *host, u32 ocr, int rescan)
+{
+	int i;
+	int high_speed = 1;
+	unsigned int ext_csd_bit=0, bus_width = MMC_BUS_WIDTH_8;
+	struct mmc_card *card=NULL;
+	int err;
+	u32 cid[4];
+	unsigned int max_dtr = (unsigned int)-1;
+
+	BUG_ON(!host);
+	WARN_ON(!host->claimed);
+
+	BUG_ON(host->card_detected);
+
+	/*
+	 * Since we're changing the OCR value, we seem to
+	 * need to tell some cards to go back to the idle
+	 * state.  We wait 1ms to give cards time to
+	 * respond.
+	 */
+	mmc_go_idle(host);
+
+	/* The extra bit indicates that we support high capacity */
+	err = mmc_send_op_cond(host, ocr | (1 << 30), NULL);
+	if (err)
+		goto err;
+
+	/*
+	 * For SPI, enable CRC as appropriate.
+	 */
+	if (mmc_host_is_spi(host)) {
+		err = mmc_spi_set_crc(host, use_spi_crc);
+		if (err)
+			goto err;
+	}
+
+	while(host->card_detected < MMC_MAX_CARD) {
+		/*
+		 * Fetch CID from card.
+		 */
+		if (mmc_host_is_spi(host))
+			err = mmc_send_cid(host, 0, cid);
+		else
+			err = mmc_all_send_cid(host, cid);
+		
+		if (err) {
+			if (!host->card_detected)
+				goto err;
+			else
+				break;
+		}
+		if (rescan) {
+			card = host->cards[host->card_detected];
+			if (memcmp(cid, card->raw_cid, sizeof(cid)) != 0) {
+				err = -ENOENT;
+				goto err;
+			}
+		} else {
+			/*
+			 * Allocate card structure.
+			 */
+			card = mmc_alloc_card(host, &mmc_type);
+			if (IS_ERR(card)) {
+				err = PTR_ERR(card);
+				goto err;
+			}
+
+			card->type = MMC_TYPE_MMC;
+			card->rca = host->card_detected+1;
+			memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
+			
+			host->cards[host->card_detected] = card;
+		}
+
+		/*
+		 * For native busses:  set card RCA and quit open drain mode.
+		 */
+		if (!mmc_host_is_spi(host)) {
+			err = mmc_set_relative_addr(card);
+			if (err)
+				goto free_card;
+		}
+		host->card_detected++;
+	}
+
+	if (host->card_detected >= MMC_MAX_CARD) {
+			printk(KERN_ERR "%s: Problem card number detected\n",
+								mmc_hostname(host));
+		goto free_card;
+	}
+		
+	printk(KERN_INFO "%s: %d cards detected on this controller\n",
+			       mmc_hostname(host), host->card_detected);
+	
+	/* Set to push pull mode */
+	if (!mmc_host_is_spi(host)) {
+		mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
+	}
+
+	for (i=0;  !rescan && i < host->card_detected; ++i) {
+		card = host->cards[i];
+			/*
+			 * Fetch CSD from card.
+			 */
+			err = mmc_send_csd(card, card->raw_csd);
+			if (err)
+				goto free_card;
+
+			err = mmc_decode_csd(card);
+			if (err)
+				goto free_card;
+			err = mmc_decode_cid(card);
+			if (err)
+				goto free_card;
+	}
+
+	/* Get the EXT CSD for each card */
+	for (i=0; i < host->card_detected; ++i) {
+		card = host->cards[i];
+
+		/*
+		 * Select card, as all following commands rely on that.
+		 */
+		if (!mmc_host_is_spi(host)) {
+			err = mmc_select_card(card);
+			if (err)
+				goto free_card;
+		}
+
+		/*
+		 * Fetch and process extended CSD.
+		 */
+		if (!rescan) {
+			err = mmc_read_ext_csd(card);
+			if (err)
+				goto free_card;
+		}
+
+		/* Check if all cards can be switched to high speed mode */
+		if ((card->ext_csd.hs_max_dtr == 0) ||
+			!(host->caps & MMC_CAP_MMC_HIGHSPEED))
+		{
+			high_speed = 0;
+		}
+
+		/* Check if all cards can be switch to wide bus */
+		if (card->csd.mmca_vsn < CSD_SPEC_VER_4) {
+			bus_width = 0;
+		}
+	}
+
+	if (bus_width && (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) {
+		if (host->caps & MMC_CAP_8_BIT_DATA) {
+			ext_csd_bit = EXT_CSD_BUS_WIDTH_8;
+			bus_width = MMC_BUS_WIDTH_8;
+		} else {
+			ext_csd_bit = EXT_CSD_BUS_WIDTH_4;
+			bus_width = MMC_BUS_WIDTH_4;
+		}
+	}
+	else {
+		bus_width = 0;
+	}
+
+	/* Set the speed en bus width to all cards */
+	for (i=0; i < host->card_detected; ++i) {
+		card = host->cards[i];
+
+		/*
+		 * Select card, as all following commands rely on that.
+		 */
+		if (!mmc_host_is_spi(host)) {
+			err = mmc_select_card(card);
+			if (err)
+				goto free_card;
+		}
+
+		if (high_speed)  {
+			/*
+			 * Activate high speed for all cards
+			 */
+			err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+				EXT_CSD_HS_TIMING, 1);
+			if (err && err != -EBADMSG)
+				goto free_card;
+
+			if (err) {
+				high_speed = 0;
+				printk(KERN_WARNING "%s: switch to highspeed failed\n",
+					   mmc_hostname(card->host));
+			}
+			else {
+				mmc_card_set_highspeed(card);
+			}
+		}
+
+		/*
+		 * Activate wide bus (if supported).
+		 */
+		if (bus_width) {
+			err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+				 EXT_CSD_BUS_WIDTH, ext_csd_bit);
+
+			if (err) {
+				printk(KERN_WARNING "%s: switch to highspeed failed\n",
+					   mmc_hostname(card->host));
+				bus_width = 0;
+			}
+		}
+
+		/*
+		 * Compute bus speed.
+		 * and chose the fastest of slowest cards
+		 */
+		if (mmc_card_highspeed(card)) {
+			if (max_dtr > card->ext_csd.hs_max_dtr)
+				max_dtr = card->ext_csd.hs_max_dtr;
+		} else if (max_dtr > card->csd.max_dtr) {
+			if (max_dtr > card->csd.max_dtr)
+				max_dtr = card->csd.max_dtr;
+		}
+	}
+
+	if (high_speed) {
+		mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
+	}
+	if (bus_width)
+		mmc_set_bus_width(card->host, bus_width);
+
+	if (max_dtr != (unsigned int)-1)
+		mmc_set_clock(host, max_dtr);
+
+	mmc_deselect_cards(host);
+	return 0;
+
+free_card:
+	while(!rescan && host->card_detected) {
+		if (host->cards[host->card_detected])
+			mmc_remove_card(host->cards[host->card_detected]);
+		--host->card_detected;
+	}
+err:
+	return err;
+}
+
+#else /* CONFIG_MULTI_MMC_ON_HOST */
+
  /*
   * Handle the detection and initialisation of a card.
   *
@@ -336,7 +601,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
  	 * Fetch CID from card.
  	 */
  	if (mmc_host_is_spi(host))
-		err = mmc_send_cid(host, cid);
+		err = mmc_send_cid(host, 0, cid);
  	else
  		err = mmc_all_send_cid(host, cid);
  	if (err)
@@ -486,17 +751,27 @@ err:

  	return err;
  }
-
+#endif
  /*
   * Host is being removed. Free up the current card.
   */
  static void mmc_remove(struct mmc_host *host)
  {
  	BUG_ON(!host);
+#ifdef CONFIG_MULTI_MMC_ON_HOST
+	while (host->card_detected--) {
+		BUG_ON(!host->cards[host->card_detected]);
+		mmc_remove_card(host->cards[host->card_detected]);
+		host->cards[host->card_detected] = NULL;
+	}
+
+	
+#else	
  	BUG_ON(!host->card);

  	mmc_remove_card(host->card);
  	host->card = NULL;
+#endif
  }

  /*
@@ -504,6 +779,8 @@ static void mmc_remove(struct mmc_host *host)
   */
  static void mmc_detect(struct mmc_host *host)
  {
+#ifdef CONFIG_MULTI_MMC_ON_HOST
+#else
  	int err;

  	BUG_ON(!host);
@@ -525,6 +802,7 @@ static void mmc_detect(struct mmc_host *host)
  		mmc_detach_bus(host);
  		mmc_release_host(host);
  	}
+#endif
  }

  /*
@@ -532,7 +810,20 @@ static void mmc_detect(struct mmc_host *host)
   */
  static int mmc_suspend(struct mmc_host *host)
  {
+#ifdef CONFIG_MULTI_MMC_ON_HOST
+	int i;
  	BUG_ON(!host);
+	mmc_claim_host(host);
+	if (!mmc_host_is_spi(host))
+		mmc_deselect_cards(host);
+	for (i=0; i<host->card_detected;++i){
+		host->cards[i]->state &= ~MMC_STATE_HIGHSPEED;
+	}
+	host->card_detected = 0;
+	mmc_release_host(host);
+#else
+	BUG_ON(!host);
+
  	BUG_ON(!host->card);

  	mmc_claim_host(host);
@@ -540,7 +831,7 @@ static int mmc_suspend(struct mmc_host *host)
  		mmc_deselect_cards(host);
  	host->card->state &= ~MMC_STATE_HIGHSPEED;
  	mmc_release_host(host);
-
+#endif
  	return 0;
  }

@@ -554,26 +845,58 @@ static int mmc_resume(struct mmc_host *host)
  {
  	int err;

+#ifdef CONFIG_MULTI_MMC_ON_HOST
+	BUG_ON(!host);
+	mmc_claim_host(host);
+	err = mmc_init_cards(host, host->ocr, 1);
+	mmc_release_host(host);
+#else
  	BUG_ON(!host);
  	BUG_ON(!host->card);

  	mmc_claim_host(host);
  	err = mmc_init_card(host, host->ocr, host->card);
  	mmc_release_host(host);
+#endif

  	return err;
  }

  static void mmc_power_restore(struct mmc_host *host)
  {
+#ifdef CONFIG_MULTI_MMC_ON_HOST
+	int i;
+	mmc_claim_host(host);
+	for (i=0; i<host->card_detected; ++i){
+		host->cards[i]->state &= ~MMC_STATE_HIGHSPEED;
+	}
+	host->card_detected = 0;
+	mmc_init_cards(host, host->ocr, 1);
+	mmc_release_host(host);
+#else
  	host->card->state &= ~MMC_STATE_HIGHSPEED;
  	mmc_claim_host(host);
  	mmc_init_card(host, host->ocr, host->card);
  	mmc_release_host(host);
+#endif
  }

  static int mmc_sleep(struct mmc_host *host)
  {
+#ifdef CONFIG_MULTI_MMC_ON_HOST
+	int i;
+	struct mmc_card *card;
+	int err = -ENOSYS;
+	for (i=0; i<host->card_detected;++i){
+		card = host->cards[i];
+		if (card && card->ext_csd.rev >= 3) {
+			err = mmc_card_sleepawake(card, 1);
+			if (err < 0)
+				pr_debug("%s: Error %d while putting card into sleep",
+					 mmc_hostname(host), err);
+		}
+	}
+#else
  	struct mmc_card *card = host->card;
  	int err = -ENOSYS;

@@ -583,12 +906,28 @@ static int mmc_sleep(struct mmc_host *host)
  			pr_debug("%s: Error %d while putting card into sleep",
  				 mmc_hostname(host), err);
  	}
+#endif

  	return err;
  }

  static int mmc_awake(struct mmc_host *host)
  {
+#ifdef CONFIG_MULTI_MMC_ON_HOST
+	struct mmc_card *card;
+	int err = -ENOSYS;
+	int i;
+	for (i=0; i<host->card_detected;++i){
+		card = host->cards[i];
+
+		if (card && card->ext_csd.rev >= 3) {
+			err = mmc_card_sleepawake(card, 0);
+			if (err < 0)
+				pr_debug("%s: Error %d while awaking sleeping card",
+					 mmc_hostname(host), err);
+		}
+	}
+#else
  	struct mmc_card *card = host->card;
  	int err = -ENOSYS;

@@ -598,6 +937,7 @@ static int mmc_awake(struct mmc_host *host)
  			pr_debug("%s: Error %d while awaking sleeping card",
  				 mmc_hostname(host), err);
  	}
+#endif

  	return err;
  }
@@ -639,7 +979,9 @@ static void mmc_attach_bus_ops(struct mmc_host *host)
  int mmc_attach_mmc(struct mmc_host *host, u32 ocr)
  {
  	int err;
-
+#if defined(CONFIG_MULTI_MMC_ON_HOST)
+	int i;
+#endif
  	BUG_ON(!host);
  	WARN_ON(!host->claimed);

@@ -671,10 +1013,31 @@ int mmc_attach_mmc(struct mmc_host *host, u32 ocr)
  	 * Can we support the voltage of the card?
  	 */
  	if (!host->ocr) {
+		printk(KERN_ERR "%s: card claims to unsupported voltages\n",
+		       mmc_hostname(host));
  		err = -EINVAL;
  		goto err;
  	}

+#ifdef CONFIG_MULTI_MMC_ON_HOST
+	err = mmc_init_cards(host, host->ocr, 0);
+	if (err)  {
+		goto remove_card;
+	}
+	mmc_release_host(host);
+
+	for (i=0; i < host->card_detected; ++i) {
+		err = mmc_add_card(host->cards[i]);
+		if (err)
+			goto remove_card;
+	}
+#ifdef CONFIG_MULTI_MMC_AS_ONE
+	err = device_add(&host->cards[0]->dev);
+	if (err)
+		goto remove_device;
+#endif
+
+#else  /* CONFIG_MULTI_MMC_ON_HOST */
  	/*
  	 * Detect and init the card.
  	 */
@@ -687,12 +1050,29 @@ int mmc_attach_mmc(struct mmc_host *host, u32 ocr)
  	err = mmc_add_card(host->card);
  	if (err)
  		goto remove_card;
+#endif  /* CONFIG_MULTI_MMC_ON_HOST */

  	return 0;
+	
+#if defined(CONFIG_MULTI_MMC_AS_ONE)
+remove_device:
+	device_del(&host->cards[0]->dev);
+#endif

+#ifdef CONFIG_MULTI_MMC_ON_HOST
+remove_card:
+	while (host->card_detected) {
+		if (host->cards[host->card_detected])
+			mmc_remove_card(host->cards[host->card_detected]);
+		host->cards[host->card_detected] = NULL;
+		--host->card_detected;
+	}
+	host->card_detected = 0;
+#else
  remove_card:
  	mmc_remove_card(host->card);
  	host->card = NULL;
+#endif
  	mmc_claim_host(host);
  err:
  	mmc_detach_bus(host);
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index d2cb5c6..b894481 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -29,7 +29,6 @@ static int _mmc_select_card(struct mmc_host *host, struct mmc_card *card)
  	memset(&cmd, 0, sizeof(struct mmc_command));

  	cmd.opcode = MMC_SELECT_CARD;
-
  	if (card) {
  		cmd.arg = card->rca << 16;
  		cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
@@ -51,20 +50,21 @@ int mmc_select_card(struct mmc_card *card)

  	return _mmc_select_card(card->host, card);
  }
+EXPORT_SYMBOL(mmc_select_card);

  int mmc_deselect_cards(struct mmc_host *host)
  {
  	return _mmc_select_card(host, NULL);
  }
+EXPORT_SYMBOL(mmc_deselect_cards);

-int mmc_card_sleepawake(struct mmc_host *host, int sleep)
+int mmc_card_sleepawake(struct mmc_card *card, int sleep)
  {
  	struct mmc_command cmd;
-	struct mmc_card *card = host->card;
  	int err;

  	if (sleep)
-		mmc_deselect_cards(host);
+		mmc_deselect_cards(card->host);

  	memset(&cmd, 0, sizeof(struct mmc_command));

@@ -74,7 +74,7 @@ int mmc_card_sleepawake(struct mmc_host *host, int sleep)
  		cmd.arg |= 1 << 15;

  	cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
-	err = mmc_wait_for_cmd(host, &cmd, 0);
+	err = mmc_wait_for_cmd(card->host, &cmd, 0);
  	if (err)
  		return err;

@@ -84,7 +84,7 @@ int mmc_card_sleepawake(struct mmc_host *host, int sleep)
  	 * SEND_STATUS command to poll the status because that command (and most
  	 * others) is invalid while the card sleeps.
  	 */
-	if (!(host->caps & MMC_CAP_WAIT_WHILE_BUSY))
+	if (!(card->host->caps & MMC_CAP_WAIT_WHILE_BUSY))
  		mmc_delay(DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000));

  	if (!sleep)
@@ -325,14 +325,15 @@ int mmc_send_csd(struct mmc_card *card, u32 *csd)
  	return 0;
  }

-int mmc_send_cid(struct mmc_host *host, u32 *cid)
+int mmc_send_cid(struct mmc_host *host, unsigned int rca, u32 *cid)
  {
  	int ret, i;

+	if (!host)
+		return -EINVAL;
+
  	if (!mmc_host_is_spi(host)) {
-		if (!host->card)
-			return -EINVAL;
-		return mmc_send_cxd_native(host, host->card->rca << 16,
+		return mmc_send_cxd_native(host, rca << 16,
  				cid, MMC_SEND_CID);
  	}

diff --git a/drivers/mmc/core/mmc_ops.h b/drivers/mmc/core/mmc_ops.h
index 653eb8e..d0aee59 100644
--- a/drivers/mmc/core/mmc_ops.h
+++ b/drivers/mmc/core/mmc_ops.h
@@ -22,10 +22,10 @@ int mmc_send_csd(struct mmc_card *card, u32 *csd);
  int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd);
  int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value);
  int mmc_send_status(struct mmc_card *card, u32 *status);
-int mmc_send_cid(struct mmc_host *host, u32 *cid);
+int mmc_send_cid(struct mmc_host *host, unsigned int rca, u32 *cid);
  int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp);
  int mmc_spi_set_crc(struct mmc_host *host, int use_crc);
-int mmc_card_sleepawake(struct mmc_host *host, int sleep);
+int mmc_card_sleepawake(struct mmc_card *card, int sleep);

  #endif

diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index fdd414e..0889de2 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -366,7 +366,7 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
  	 * Fetch CID from card.
  	 */
  	if (mmc_host_is_spi(host))
-		err = mmc_send_cid(host, cid);
+		err = mmc_send_cid(host, 0, cid);
  	else
  		err = mmc_all_send_cid(host, cid);
  	if (err)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 83f0aff..e3ad4cf 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -38,6 +38,12 @@
  #include <plat/mmc.h>
  #include <plat/cpu.h>

+#ifdef CONFIG_MMC_DEBUG
+#define mmc_dbg(fmt, arg...)	printk(KERN_DEBUG fmt, ##arg)
+#else
+#define mmc_dbg(fmt, arg...)
+#endif
+
  /* OMAP HSMMC Host Controller Registers */
  #define OMAP_HSMMC_SYSCONFIG	0x0010
  #define OMAP_HSMMC_SYSSTATUS	0x0014
@@ -56,6 +62,7 @@
  #define OMAP_HSMMC_IE		0x0134
  #define OMAP_HSMMC_ISE		0x0138
  #define OMAP_HSMMC_CAPA		0x0140
+#define OMAP_HSMMC_CUR_CAPA	0x0148

  #define VS18			(1 << 26)
  #define VS30			(1 << 25)
@@ -625,13 +632,13 @@ static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host)
  		if (OMAP_MMC_MASTER_CLOCK / dsor > ios->clock)
  			dsor++;

-		if (dsor > 250)
-			dsor = 250;
+		if (dsor > 1023) /* Maximum of ratio 0x3FF */
+			dsor = 1023;
  	}

  	OMAP_HSMMC_WRITE(host->base, SYSCTL,
  		OMAP_HSMMC_READ(host->base, SYSCTL) & ~CEN);
-	OMAP_HSMMC_WRITE(host->base, SYSCTL, (dsor << 6) | (DTO << 16));
+	OMAP_HSMMC_WRITE(host->base, SYSCTL, (dsor << 6) | (DTO << DTO_SHIFT));
  	OMAP_HSMMC_WRITE(host->base, SYSCTL,
  		OMAP_HSMMC_READ(host->base, SYSCTL) | ICE);

@@ -816,6 +823,7 @@ omap_hsmmc_start_command(struct omap_hsmmc_host *host, struct mmc_command *cmd,

  	OMAP_HSMMC_WRITE(host->base, ARG, cmd->arg);
  	OMAP_HSMMC_WRITE(host->base, CMD, cmdreg);
+
  }

  static int
@@ -867,6 +875,52 @@ omap_hsmmc_xfer_done(struct omap_hsmmc_host *host, struct mmc_data *data)
  	omap_hsmmc_start_command(host, data->stop, NULL);
  }

+#ifdef CONFIG_MMC_DEBUG
+static const char *mmc_report_card_status(u32 status)
+{
+	/* It's the status come from the omap mmc controler */
+	/* --- means reserved bit without definition at documentation */
+	static const char *mmc_status_bits[] = {
+		"---", "---", "---", "---", "---", "APP_CMD", "---", "SW_ERROR",
+		"READY_4_DATA",
+		"---", "---", "---", "---", /* mmc_report_card_state */
+		
+		"ERASE_RST",  "---", "WP_ERASE_SKIP", "CID/CSD_OVR", "---","---",
+		"ERR", "CC_ERR", "CARD_ECC_FAILED", "ILLEGAL_CMD", "COM_CRC_ERR",
+		"(UN)LOCK_FAILED", "CARD_LOCKED", "WP_VIOLATION",
+		"ERASE_PARAM", "ERASE_SEQ_ERR", "BLK_LEN_ERR", "ADDR_MISCALIGN",
+		"ADDR_OUT_OF_RANGE",
+	};
+	static const char *mmc_state_bits[] = {
+			"S_IDLE", "S_READY","S_IDENT","S_STBY",
+			"S_TRAN","S_DATA","S_RCV","S_PRG","S_DIS",
+			"S_BTST","S_SLP","---", "---", "---", "---","---"
+	};
+
+	static char res[256];
+	char *buf = res;
+	int len, i;
+
+	len = sprintf(buf, "CARD status 0x%x :", status);
+	buf += len;
+
+	for (i = 0; i < ARRAY_SIZE(mmc_status_bits); i++) {
+		if (i>=9 && i<=12){
+			if (i==9){
+				len = sprintf(buf, " %s |", mmc_state_bits[status&0x0F]);
+				buf += len;
+			}
+		}
+		else {
+			if (status & (1 << i)) {
+				len = sprintf(buf, " %s |", mmc_status_bits[i]);
+				buf += len;
+			}
+		}
+	}
+	return res;
+}
+#endif /* CONFIG_MMC_DEBUG */
  /*
   * Notify the core about command completion
   */
@@ -882,9 +936,18 @@ omap_hsmmc_cmd_done(struct omap_hsmmc_host *host, struct mmc_command *cmd)
  			cmd->resp[2] = OMAP_HSMMC_READ(host->base, RSP32);
  			cmd->resp[1] = OMAP_HSMMC_READ(host->base, RSP54);
  			cmd->resp[0] = OMAP_HSMMC_READ(host->base, RSP76);
+			mmc_dbg("%s: "
+					"RSP10=0x%08x RSP32=0x%08x RSP54=0x%08x RSP76=0x%08x\n",
+					mmc_hostname(host->mmc),
+					cmd->resp[3],cmd->resp[2],cmd->resp[1],cmd->resp[0]);
+		
  		} else {
  			/* response types 1, 1b, 3, 4, 5, 6 */
  			cmd->resp[0] = OMAP_HSMMC_READ(host->base, RSP10);
+			mmc_dbg("%s: RSP10=0x%08x %s\n",
+					mmc_hostname(host->mmc),
+					cmd->resp[0],
+					mmc_report_card_status(cmd->resp[0]));
  		}
  	}
  	if ((host->data == NULL && !host->response_busy) || cmd->error) {
@@ -914,6 +977,7 @@ static void omap_hsmmc_dma_cleanup(struct omap_hsmmc_host *host, int errno)
   * Readable error output
   */
  #ifdef CONFIG_MMC_DEBUG
+
  static void omap_hsmmc_report_irq(struct omap_hsmmc_host *host, u32 status)
  {
  	/* --- means reserved bit without definition at documentation */
@@ -938,6 +1002,7 @@ static void omap_hsmmc_report_irq(struct omap_hsmmc_host *host, u32 status)

  	dev_dbg(mmc_dev(host->mmc), "%s\n", res);
  }
+
  #endif  /* CONFIG_MMC_DEBUG */

  /*
@@ -1539,13 +1604,13 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
  		if (OMAP_MMC_MASTER_CLOCK / dsor > ios->clock)
  			dsor++;

-		if (dsor > 250)
-			dsor = 250;
+		if (dsor > 1023) /* Maximum of ratio 0x3FF */
+			dsor = 1023;
  	}
  	omap_hsmmc_stop_clock(host);
  	regval = OMAP_HSMMC_READ(host->base, SYSCTL);
  	regval = regval & ~(CLKD_MASK);
-	regval = regval | (dsor << 6) | (DTO << 16);
+	regval = regval | (dsor << 6) | (DTO << DTO_SHIFT);
  	OMAP_HSMMC_WRITE(host->base, SYSCTL, regval);
  	OMAP_HSMMC_WRITE(host->base, SYSCTL,
  		OMAP_HSMMC_READ(host->base, SYSCTL) | ICE);
@@ -1921,7 +1986,8 @@ static int omap_hsmmc_regs_show(struct seq_file *s, void *data)
  			OMAP_HSMMC_READ(host->base, ISE));
  	seq_printf(s, "CAPA:\t\t0x%08x\n",
  			OMAP_HSMMC_READ(host->base, CAPA));
-
+	seq_printf(s, "CUR_CAPA:\t\t0x%08x\n",
+			OMAP_HSMMC_READ(host->base, CUR_CAPA));
  	clk_disable(host->fclk);

  	return 0;
@@ -2132,13 +2198,13 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
  	ret = request_irq(host->irq, omap_hsmmc_irq, IRQF_DISABLED,
  			mmc_hostname(mmc), host);
  	if (ret) {
-		dev_dbg(mmc_dev(host->mmc), "Unable to grab HSMMC IRQ\n");
+		dev_err(mmc_dev(host->mmc), "Unable to grab HSMMC IRQ\n");
  		goto err_irq;
  	}

  	if (pdata->init != NULL) {
  		if (pdata->init(&pdev->dev) != 0) {
-			dev_dbg(mmc_dev(host->mmc),
+			dev_err(mmc_dev(host->mmc),
  				"Unable to configure MMC IRQs\n");
  			goto err_irq_cd_init;
  		}
@@ -2161,7 +2227,7 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
  					  | IRQF_DISABLED,
  				  mmc_hostname(mmc), host);
  		if (ret) {
-			dev_dbg(mmc_dev(host->mmc),
+			dev_err(mmc_dev(host->mmc),
  				"Unable to grab MMC CD IRQ\n");
  			goto err_irq_cd;
  		}
diff --git a/arch/arm/mach-omap2/hsmmc.c b/arch/arm/mach-omap2/hsmmc.c
index 9ad2295..7996bcc 100644
--- a/arch/arm/mach-omap2/hsmmc.c
+++ b/arch/arm/mach-omap2/hsmmc.c
@@ -5,6 +5,11 @@
   * Copyright (C) 2008 Nokia Corporation
   * Author: Texas Instruments
   *
+ *
+ * 20100315
+ *          Laurent Epinat <laurent.epinat@cioinfoindus.fr>
+ * Add 	cpu_is_omap34xx() for pbias1  (VMMCa1)
+ *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
@@ -83,14 +88,23 @@ static void hsmmc1_before_set_reg(struct device *dev, int slot,
  			prog_io = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO1);
  			prog_io |= OMAP3630_PRG_SDMMC1_SPEEDCTRL;
  			omap_ctrl_writel(prog_io, OMAP343X_CONTROL_PROG_IO1);
-		} else {
+		}
+		else if (cpu_is_omap34xx()) {
+			reg &= 	~(OMAP343X_PBIASSPEEDCTRL1|OMAP2_PBIASSPEEDCTRL0);
+		}
+		else {
  			reg |= OMAP2_PBIASSPEEDCTRL0;
  		}
  		reg &= ~OMAP2_PBIASLITEPWRDNZ0;
+		if (cpu_is_omap34xx())
+			reg &= ~OMAP343X_PBIASLITEPWRDNZ1;
  		omap_ctrl_writel(reg, control_pbias_offset);
  	} else {
  		reg = omap_ctrl_readl(control_pbias_offset);
  		reg &= ~OMAP2_PBIASLITEPWRDNZ0;
+		if (cpu_is_omap34xx())
+			reg &= ~OMAP343X_PBIASLITEPWRDNZ1;
+
  		omap_ctrl_writel(reg, control_pbias_offset);
  	}
  }
@@ -106,15 +120,29 @@ static void hsmmc1_after_set_reg(struct device *dev, int slot,
  	if (power_on) {
  		reg = omap_ctrl_readl(control_pbias_offset);
  		reg |= (OMAP2_PBIASLITEPWRDNZ0 | OMAP2_PBIASSPEEDCTRL0);
-		if ((1 << vdd) <= MMC_VDD_165_195)
+		if (cpu_is_omap34xx()) {
+			reg |= 	(OMAP343X_PBIASLITEPWRDNZ1 | OMAP343X_PBIASSPEEDCTRL1);
+		}
+		if ((1 << vdd) <= MMC_VDD_165_195) {
  			reg &= ~OMAP2_PBIASLITEVMODE0;
-		else
+			if (cpu_is_omap34xx()) {
+				reg &= ~OMAP343X_PBIASLITEVMODE1;
+			}
+		}
+		else {
  			reg |= OMAP2_PBIASLITEVMODE0;
+			if (cpu_is_omap34xx()) {
+				reg |= OMAP343X_PBIASLITEVMODE1;
+			}
+		}
  		omap_ctrl_writel(reg, control_pbias_offset);
  	} else {
  		reg = omap_ctrl_readl(control_pbias_offset);
  		reg |= (OMAP2_PBIASSPEEDCTRL0 | OMAP2_PBIASLITEPWRDNZ0 |
  			OMAP2_PBIASLITEVMODE0);
+		if (cpu_is_omap34xx())
+			reg |= 	(OMAP343X_PBIASSPEEDCTRL1 | OMAP343X_PBIASLITEPWRDNZ1 |
+						OMAP343X_PBIASLITEVMODE1);
  		omap_ctrl_writel(reg, control_pbias_offset);
  	}
  }
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index eaf3636..b925265 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -182,7 +182,12 @@ struct mmc_host {
  	unsigned int		disable_delay;	/* disable delay in msecs */
  	struct delayed_work	disable;	/* disabling work */

-	struct mmc_card		*card;		/* device attached to this host */
+#ifdef CONFIG_MULTI_MMC_ON_HOST
+#define MMC_MAX_CARD	64		/* spec ~40 in same host ? */
+	struct mmc_card *cards[MMC_MAX_CARD];/* devices attached to this host */
+	int  card_detected;
+#endif
+	struct mmc_card *card;			/* Keep for compatibility SD, SDIO, ...*/

  	wait_queue_head_t	wq;
  	struct task_struct	*claimer;	/* task that has host claimed */
---



Le 24.03.2010 16:35, Madhusudhan a ?crit :
>
>
>> -----Original Message-----
>> From: Nishanth Menon [mailto:nm at ti.com]
>> Sent: Tuesday, March 23, 2010 5:49 PM
>> To: Tony Lindgren
>> Cc: Pais, Allen; linux-arm-kernel at lists.infradead.org; linux-
>> omap at vger.kernel.org; Pandita, Vikram; Madhusudhan Chikkature Rajashekar
>> Subject: mmc errors (was Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3)
>>
>> Tony Lindgren had written, on 03/23/2010 10:27 AM, the following:
>> [...]
>>> Then at least one issue remains for zoom3 to be usable..
>>> I'm getting tons of MMC errors trying to mount root on it:
>>>
>>> mmcblk1: error -110 transferring data, sector 2097024, nr 8, card status
>> 0x900
>>> end_request: I/O error, dev mmcblk1, sector 2097024
>>> ...
>>>
>> I have seen this on few platforms and seem to be related to eMMC usage.
>>
>>> Any ideas if that's fixed somewhere also?
>> Madhu, any comments?
>>
> Sorry about multiple replies to this mail. Just wanted to avoid top posting.
>
> The eMMC on Zoom2 has an issue with respect to detection as a high
> capacity card. This was discussed on the list with Pierre sometime back. I
> don't have an acceptable solution to make this device work. Rather I
> prefer to submit a patch which disables MMC2 on these boards.
>
> You can still use MMC1 to mount your file system. This is the card you can
> plug in to the cage.
>
> Regards,
> Madhu
>
>> --
>> Regards,
>> Nishanth Menon
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-omap" in
> the body of a message to majordomo at vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
>


-- 

Salutations
Laurent Epinat -> mailto:laurent.epinat at cioinfoindus.fr

CIO Informatique
Le millenium
1, rue de Presse - BP 710
42950 Saint-Etienne Cedex 9

Tel    33 (0) 477 93 34 32
Tcopie 33 (0) 477 79 75 55
WWW : http://www.cioinfoindus.fr/

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Madhusudhan]

> -----Original Message-----
> From: linux-omap-owner at vger.kernel.org [mailto:linux-omap-
> owner at vger.kernel.org] On Behalf Of Tony Lindgren
> Sent: Tuesday, March 23, 2010 10:27 AM
> To: Pais, Allen
> Cc: linux-arm-kernel at lists.infradead.org; linux-omap at vger.kernel.org;
> Pandita, Vikram
> Subject: Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3
> 
> * Pais, Allen <allen.pais@ti.com> [100322 22:42]:
> > > >
> > > >  With this patch[DEBUG_LL + earlyprintk],
> > > >  I still haven't been able to boot the kernel.
> > > >  Is it working on your side.
> > > >
> > > >  The commit am using is : a842b5f9ce70e1b738eabb4d719860070180ed1c
> > >
> > > I think you will also need the 3630 serial fixes series posted
> > > recently.
> > >
> > > I just merged those into omap-fixes-for-linus (and master)
> > > branch(es). Maybe give it a try with at commit
> > > b3c7740a120c8a7775cb63b4d094466da5c01692 + this patch?
> >
> >   Thanks, I'll pull in those fixes.
> >  I believe the mux errors are fixed. Have a look at
> >  http://dev.omapzoom.org/?p=manju/kernel-omap3-
> dev.git;a=commit;h=3499f5023ee90dc6ee3868a3147b87fe22a1d9b7
> >
> >  Patch must have been missed some how.
> 
> OK, we really should get fixes like that to mainline kernel ASAP
> to avoid duplicating the effort.
> 
> Then at least one issue remains for zoom3 to be usable..
> I'm getting tons of MMC errors trying to mount root on it:
> 
> mmcblk1: error -110 transferring data, sector 2097024, nr 8, card status
> 0x900
> end_request: I/O error, dev mmcblk1, sector 2097024
> ...
> 
> Any ideas if that's fixed somewhere also?
> 
Tony,

What is the branch on which the kernel is built? I tried the master branch
and the omap-fixes-for-linus both does not seem to boot Zoom3.

Regards,
Madhu

> Regards,
> 
> Tony
> --
> To unsubscribe from this list: send the line "unsubscribe linux-omap" in
> the body of a message to majordomo at vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[G, Manjunath Kondaiah]

Master branch will work fine for omap_zoom3_defconfig. Pls make sure to 
use ttyS0 in bootargs.

OMAP36XX ZOOM3 # boot
LAN9x18 (0x92210000) detected.
Read mac address: 00:08:EE:03:7D:EE
start Auto negotiation... (take ~2sec)
Auto negotiation complete, 100BaseTX, full duplex
TFTP from server 172.24.136.151; our IP address is 172.24.190.192; sending through gateway 172.24.188.1
Filename 'uImage_zoom3'.
Load address: 0x80300000
Loading: #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         ##########################################################
done
Bytes transferred = 1959780 (1de764 hex)
## Booting image at 80300000 ...
   Image Name:   Linux-2.6.34-rc2-07865-g2e51807
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1959716 Bytes =  1.9 MB
   Load Address: 80008000
   Entry Point:  80008000
   Verifying Checksum ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
Linux version 2.6.34-rc2-07865-g2e51807 (manju at u-host) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203) ) #5 Wed Mar 31 11:51:19 IST 2010
CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7f
CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
Machine: OMAP Zoom3 board
Memory policy: ECC disabled, Data cache writeback
OMAP3630 ES1.0 (l2cache iva sgx neon isp 192mhz_clk )
SRAM: Mapped pa 0x40200000 to va 0xfe400000 size: 0x100000
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
Kernel command line: console=ttyS0,115200n8 root=/dev/nfs rw nfsroot=172.24.136.151:/home/manju/fs/alsa-fs target,nolock,tcp,rsize=1024,wsize=1024 mem=128M ip=dhcp

Regards,
Manjunath 
 

> -----Original Message-----
> From: linux-omap-owner at vger.kernel.org 
> [mailto:linux-omap-owner at vger.kernel.org] On Behalf Of 
> Chikkature Rajashekar, Madhusudhan
> Sent: Wednesday, March 31, 2010 5:05 AM
> To: 'Tony Lindgren'; Pais, Allen
> Cc: linux-arm-kernel at lists.infradead.org; 
> linux-omap at vger.kernel.org; Pandita, Vikram
> Subject: RE: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3
> 
> 
> 
> > -----Original Message-----
> > From: linux-omap-owner at vger.kernel.org [mailto:linux-omap-
> > owner at vger.kernel.org] On Behalf Of Tony Lindgren
> > Sent: Tuesday, March 23, 2010 10:27 AM
> > To: Pais, Allen
> > Cc: linux-arm-kernel at lists.infradead.org; 
> linux-omap at vger.kernel.org;
> > Pandita, Vikram
> > Subject: Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3
> > 
> > * Pais, Allen <allen.pais@ti.com> [100322 22:42]:
> > > > >
> > > > >  With this patch[DEBUG_LL + earlyprintk],
> > > > >  I still haven't been able to boot the kernel.
> > > > >  Is it working on your side.
> > > > >
> > > > >  The commit am using is : 
> a842b5f9ce70e1b738eabb4d719860070180ed1c
> > > >
> > > > I think you will also need the 3630 serial fixes series posted
> > > > recently.
> > > >
> > > > I just merged those into omap-fixes-for-linus (and master)
> > > > branch(es). Maybe give it a try with at commit
> > > > b3c7740a120c8a7775cb63b4d094466da5c01692 + this patch?
> > >
> > >   Thanks, I'll pull in those fixes.
> > >  I believe the mux errors are fixed. Have a look at
> > >  http://dev.omapzoom.org/?p=manju/kernel-omap3-
> > dev.git;a=commit;h=3499f5023ee90dc6ee3868a3147b87fe22a1d9b7
> > >
> > >  Patch must have been missed some how.
> > 
> > OK, we really should get fixes like that to mainline kernel ASAP
> > to avoid duplicating the effort.
> > 
> > Then at least one issue remains for zoom3 to be usable..
> > I'm getting tons of MMC errors trying to mount root on it:
> > 
> > mmcblk1: error -110 transferring data, sector 2097024, nr 
> 8, card status
> > 0x900
> > end_request: I/O error, dev mmcblk1, sector 2097024
> > ...
> > 
> > Any ideas if that's fixed somewhere also?
> > 
> Tony,
> 
> What is the branch on which the kernel is built? I tried the 
> master branch
> and the omap-fixes-for-linus both does not seem to boot Zoom3.
> 
> Regards,
> Madhu
> 
> > Regards,
> > 
> > Tony
> > --
> > To unsubscribe from this list: send the line "unsubscribe 
> linux-omap" in
> > the body of a message to majordomo at vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
> --
> To unsubscribe from this list: send the line "unsubscribe 
> linux-omap" in
> the body of a message to majordomo at vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Madhusudhan]

> -----Original Message-----
> From: G, Manjunath Kondaiah [mailto:manjugk at ti.com]
> Sent: Wednesday, March 31, 2010 1:11 AM
> To: Chikkature Rajashekar, Madhusudhan; 'Tony Lindgren'; Pais, Allen
> Cc: linux-arm-kernel at lists.infradead.org; linux-omap at vger.kernel.org;
> Pandita, Vikram
> Subject: RE: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3
> 
> Master branch will work fine for omap_zoom3_defconfig. Pls make sure to
> use ttyS0 in bootargs.
> 
Yes. That works.

Thanks,
Madhu

> OMAP36XX ZOOM3 # boot
> LAN9x18 (0x92210000) detected.
> Read mac address: 00:08:EE:03:7D:EE
> start Auto negotiation... (take ~2sec)
> Auto negotiation complete, 100BaseTX, full duplex
> TFTP from server 172.24.136.151; our IP address is 172.24.190.192; sending
> through gateway 172.24.188.1
> Filename 'uImage_zoom3'.
> Load address: 0x80300000
> Loading: #################################################################
>          #################################################################
>          #################################################################
>          #################################################################
>          #################################################################
>          ##########################################################
> done
> Bytes transferred = 1959780 (1de764 hex)
> ## Booting image at 80300000 ...
>    Image Name:   Linux-2.6.34-rc2-07865-g2e51807
>    Image Type:   ARM Linux Kernel Image (uncompressed)
>    Data Size:    1959716 Bytes =  1.9 MB
>    Load Address: 80008000
>    Entry Point:  80008000
>    Verifying Checksum ... OK
> OK
> 
> Starting kernel ...
> 
> Uncompressing Linux... done, booting the kernel.
> Linux version 2.6.34-rc2-07865-g2e51807 (manju at u-host) (gcc version 4.3.3
> (Sourcery G++ Lite 2009q1-203) ) #5 Wed Mar 31 11:51:19 IST 2010
> CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7f
> CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
> Machine: OMAP Zoom3 board
> Memory policy: ECC disabled, Data cache writeback
> OMAP3630 ES1.0 (l2cache iva sgx neon isp 192mhz_clk )
> SRAM: Mapped pa 0x40200000 to va 0xfe400000 size: 0x100000
> Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
> Kernel command line: console=ttyS0,115200n8 root=/dev/nfs rw
> nfsroot=172.24.136.151:/home/manju/fs/alsa-fs
> target,nolock,tcp,rsize=1024,wsize=1024 mem=128M ip=dhcp
> 
> Regards,
> Manjunath
> 
> 
> > -----Original Message-----
> > From: linux-omap-owner at vger.kernel.org
> > [mailto:linux-omap-owner at vger.kernel.org] On Behalf Of
> > Chikkature Rajashekar, Madhusudhan
> > Sent: Wednesday, March 31, 2010 5:05 AM
> > To: 'Tony Lindgren'; Pais, Allen
> > Cc: linux-arm-kernel at lists.infradead.org;
> > linux-omap at vger.kernel.org; Pandita, Vikram
> > Subject: RE: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3
> >
> >
> >
> > > -----Original Message-----
> > > From: linux-omap-owner at vger.kernel.org [mailto:linux-omap-
> > > owner at vger.kernel.org] On Behalf Of Tony Lindgren
> > > Sent: Tuesday, March 23, 2010 10:27 AM
> > > To: Pais, Allen
> > > Cc: linux-arm-kernel at lists.infradead.org;
> > linux-omap at vger.kernel.org;
> > > Pandita, Vikram
> > > Subject: Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3
> > >
> > > * Pais, Allen <allen.pais@ti.com> [100322 22:42]:
> > > > > >
> > > > > >  With this patch[DEBUG_LL + earlyprintk],
> > > > > >  I still haven't been able to boot the kernel.
> > > > > >  Is it working on your side.
> > > > > >
> > > > > >  The commit am using is :
> > a842b5f9ce70e1b738eabb4d719860070180ed1c
> > > > >
> > > > > I think you will also need the 3630 serial fixes series posted
> > > > > recently.
> > > > >
> > > > > I just merged those into omap-fixes-for-linus (and master)
> > > > > branch(es). Maybe give it a try with at commit
> > > > > b3c7740a120c8a7775cb63b4d094466da5c01692 + this patch?
> > > >
> > > >   Thanks, I'll pull in those fixes.
> > > >  I believe the mux errors are fixed. Have a look at
> > > >  http://dev.omapzoom.org/?p=manju/kernel-omap3-
> > > dev.git;a=commit;h=3499f5023ee90dc6ee3868a3147b87fe22a1d9b7
> > > >
> > > >  Patch must have been missed some how.
> > >
> > > OK, we really should get fixes like that to mainline kernel ASAP
> > > to avoid duplicating the effort.
> > >
> > > Then at least one issue remains for zoom3 to be usable..
> > > I'm getting tons of MMC errors trying to mount root on it:
> > >
> > > mmcblk1: error -110 transferring data, sector 2097024, nr
> > 8, card status
> > > 0x900
> > > end_request: I/O error, dev mmcblk1, sector 2097024
> > > ...
> > >
> > > Any ideas if that's fixed somewhere also?
> > >
> > Tony,
> >
> > What is the branch on which the kernel is built? I tried the
> > master branch
> > and the omap-fixes-for-linus both does not seem to boot Zoom3.
> >
> > Regards,
> > Madhu
> >
> > > Regards,
> > >
> > > Tony
> > > --
> > > To unsubscribe from this list: send the line "unsubscribe
> > linux-omap" in
> > > the body of a message to majordomo at vger.kernel.org
> > > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe
> > linux-omap" in
> > the body of a message to majordomo at vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Aguirre, Sergio]

> -----Original Message-----
> From: linux-omap-owner at vger.kernel.org [mailto:linux-omap-
> owner at vger.kernel.org] On Behalf Of Tony Lindgren
> Sent: Tuesday, March 23, 2010 10:27 AM
> To: Pais, Allen
> Cc: linux-arm-kernel at lists.infradead.org; linux-omap at vger.kernel.org;
> Pandita, Vikram
> Subject: Re: [PATCH] arm: Fix DEBUG_LL for omap zoom2/3
> 
> * Pais, Allen <allen.pais@ti.com> [100322 22:42]:
> > > >
> > > >  With this patch[DEBUG_LL + earlyprintk],
> > > >  I still haven't been able to boot the kernel.
> > > >  Is it working on your side.
> > > >
> > > >  The commit am using is : a842b5f9ce70e1b738eabb4d719860070180ed1c
> > >
> > > I think you will also need the 3630 serial fixes series posted
> > > recently.
> > >
> > > I just merged those into omap-fixes-for-linus (and master)
> > > branch(es). Maybe give it a try with at commit
> > > b3c7740a120c8a7775cb63b4d094466da5c01692 + this patch?
> >
> >   Thanks, I'll pull in those fixes.
> >  I believe the mux errors are fixed. Have a look at
> >  http://dev.omapzoom.org/?p=manju/kernel-omap3-
> dev.git;a=commit;h=3499f5023ee90dc6ee3868a3147b87fe22a1d9b7
> >
> >  Patch must have been missed some how.
> 
> OK, we really should get fixes like that to mainline kernel ASAP
> to avoid duplicating the effort.

Hi,

Without doing cherry-pick of above patch url (that Allen mentioned),
there's an error when trying to get uart4_[i,f]ck clocks during
bootup.

Is this patch being pushed anywhere already? IMHO, at least it should be on omap-testing, but ideally on omap-fixes-for-linus branch.

What do you think?

Regards,
Sergio

> 
> Then at least one issue remains for zoom3 to be usable..
> I'm getting tons of MMC errors trying to mount root on it:
> 
> mmcblk1: error -110 transferring data, sector 2097024, nr 8, card status
> 0x900
> end_request: I/O error, dev mmcblk1, sector 2097024
> ...
> 
> Any ideas if that's fixed somewhere also?
> 
> Regards,
> 
> Tony
> --
> To unsubscribe from this list: send the line "unsubscribe linux-omap" in
> the body of a message to majordomo at vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Tony Lindgren]

Zoom2 and 3 have UARTs only on the external debug board.
GPMC needs to be mapped early to use it for DEBUG_LL.

Note that with the pending serial.c patches you need to
set console=ttyS0,115200n8 as it will be the only UART
mapped. To use DEBUG_LL, you need to pass also earlyprintk
in cmdline.

Cc: Allen Pais <allen.pais@ti.com>
Cc: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index eb62bf9..bd23aa9 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -328,6 +328,15 @@ __create_page_tables:
 	add	r0, r4, #0xd8000000 >> 18
 	str	r3, [r0]
 #endif
+if defined(CONFIG_MACH_OMAP_ZOOM2) || defined(CONFIG_MACH_OMAP_ZOOM3)
+	/*
+	 * Zoom2 and Zoom3 have UARTs only on the debug board.
+	 * The debug board is connected to the GPMC.
+	 */
+	add	r0, r4, #0xfb000000 >> 18
+	orr	r3, r7, #0x10000000
+	str	r3, [r0]
+#endif
 #endif
 	mov	pc, lr
 ENDPROC(__create_page_tables)

--tKW2IUtsqtDRztdT--

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Tony Lindgren]

Zoom2 and 3 have UARTs only on the external debug board.
GPMC needs to be mapped early to use it for DEBUG_LL.

Additionally, 0xfb000000 overlaps with other areas, so
use 0xf7000000 for the virtual address instead.

Note that with the pending serial.c patches you need to
set console=ttyS0,115200n8 as it will be the only UART
mapped. To use DEBUG_LL, you need to pass also earlyprintk
in cmdline.

Cc: Allen Pais <allen.pais@ti.com>
Cc: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index eb62bf9..d13af88 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -328,6 +328,15 @@ __create_page_tables:
 	add	r0, r4, #0xd8000000 >> 18
 	str	r3, [r0]
 #endif
+#if defined(CONFIG_MACH_OMAP_ZOOM2) || defined(CONFIG_MACH_OMAP_ZOOM3)
+	/*
+	 * Zoom2 and Zoom3 have UARTs only on the debug board.
+	 * The debug board is connected to the GPMC.
+	 */
+	add	r0, r4, #0xf7000000 >> 18
+	orr	r3, r7, #0x10000000
+	str	r3, [r0]
+#endif
 #endif
 	mov	pc, lr
 ENDPROC(__create_page_tables)
diff --git a/arch/arm/mach-omap2/board-zoom-debugboard.c b/arch/arm/mach-omap2/board-zoom-debugboard.c
index e15d2e8..1d7f827 100644
--- a/arch/arm/mach-omap2/board-zoom-debugboard.c
+++ b/arch/arm/mach-omap2/board-zoom-debugboard.c
@@ -82,7 +82,7 @@ static inline void __init zoom_init_smsc911x(void)
 
 static struct plat_serial8250_port serial_platform_data[] = {
 	{
-		.mapbase	= 0x10000000,
+		.mapbase	= ZOOM_UART_BASE,
 		.irq		= OMAP_GPIO_IRQ(102),
 		.flags		= UPF_BOOT_AUTOCONF|UPF_IOREMAP|UPF_SHARE_IRQ,
 		.irqflags	= IRQF_SHARED | IRQF_TRIGGER_RISING,
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 87f676a..1803aac 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -166,6 +166,15 @@ static struct map_desc omap34xx_io_desc[] __initdata = {
 		.length		= L4_EMU_34XX_SIZE,
 		.type		= MT_DEVICE
 	},
+#if defined(CONFIG_DEBUG_LL) &&						\
+	(defined(CONFIG_MACH_OMAP_ZOOM2) || defined(CONFIG_MACH_OMAP_ZOOM3))
+	{
+		.virtual	= ZOOM_UART_VIRT,
+		.pfn		= __phys_to_pfn(ZOOM_UART_BASE),
+		.length		= SZ_1M,
+		.type		= MT_DEVICE
+	},
+#endif
 };
 #endif
 #ifdef	CONFIG_ARCH_OMAP4
diff --git a/arch/arm/plat-omap/include/plat/serial.h b/arch/arm/plat-omap/include/plat/serial.h
index 83dce4c..a18f617 100644
--- a/arch/arm/plat-omap/include/plat/serial.h
+++ b/arch/arm/plat-omap/include/plat/serial.h
@@ -39,7 +39,7 @@
 
 /* External port on Zoom2/3 */
 #define ZOOM_UART_BASE		0x10000000
-#define ZOOM_UART_VIRT		0xfb000000
+#define ZOOM_UART_VIRT		0xf7000000
 
 #define OMAP_PORT_SHIFT		2
 #define OMAP7XX_PORT_SHIFT	0

--7qSK/uQB79J36Y4o--

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Tony Lindgren]

Zoom2 and 3 have UARTs only on the external debug board.
GPMC needs to be mapped early to use it for DEBUG_LL.

Additionally, 0xfb000000 overlaps with other areas, so
use 0xfa400000 for the virtual address instead.

Note that with the pending serial.c patches you need to
set console=ttyS0,115200n8 as it will be the only UART
mapped. To use DEBUG_LL, you need to pass also earlyprintk
in cmdline.

Cc: Allen Pais <allen.pais@ti.com>
Cc: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index eb62bf9..fd870e1 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -328,6 +328,16 @@ __create_page_tables:
 	add	r0, r4, #0xd8000000 >> 18
 	str	r3, [r0]
 #endif
+#if defined(CONFIG_MACH_OMAP_ZOOM2) || defined(CONFIG_MACH_OMAP_ZOOM3)
+	/*
+	 * Zoom2 and Zoom3 have UARTs only on the debug board.
+	 * The debug board is connected to the GPMC.
+	 */
+	add	r0, r4, #0xfa000000 >> 18
+	orr	r0, r0, #0x00400000 >> 18	@ ZOOM_UART_VIRT
+	orr	r3, r7, #0x10000000		@ ZOOM_UART_BASE
+	str	r3, [r0]
+#endif
 #endif
 	mov	pc, lr
 ENDPROC(__create_page_tables)
diff --git a/arch/arm/mach-omap2/board-zoom-debugboard.c b/arch/arm/mach-omap2/board-zoom-debugboard.c
index e15d2e8..1d7f827 100644
--- a/arch/arm/mach-omap2/board-zoom-debugboard.c
+++ b/arch/arm/mach-omap2/board-zoom-debugboard.c
@@ -82,7 +82,7 @@ static inline void __init zoom_init_smsc911x(void)
 
 static struct plat_serial8250_port serial_platform_data[] = {
 	{
-		.mapbase	= 0x10000000,
+		.mapbase	= ZOOM_UART_BASE,
 		.irq		= OMAP_GPIO_IRQ(102),
 		.flags		= UPF_BOOT_AUTOCONF|UPF_IOREMAP|UPF_SHARE_IRQ,
 		.irqflags	= IRQF_SHARED | IRQF_TRIGGER_RISING,
diff --git a/arch/arm/mach-omap2/include/mach/debug-macro.S b/arch/arm/mach-omap2/include/mach/debug-macro.S
index 4a63a2e..231ea27 100644
--- a/arch/arm/mach-omap2/include/mach/debug-macro.S
+++ b/arch/arm/mach-omap2/include/mach/debug-macro.S
@@ -87,10 +87,10 @@ omap_uart_lsr:	.word	0
 		b	98f
 44:		mov	\rx, #UART_OFFSET(OMAP4_UART4_BASE)
 		b	98f
-95:		mov	\rx, #ZOOM_UART_BASE
+95:		ldr	\rx, =ZOOM_UART_BASE
 		ldr	\tmp, =omap_uart_phys
 		str	\rx, [\tmp, #0]
-		mov	\rx, #ZOOM_UART_VIRT
+		ldr	\rx, =ZOOM_UART_VIRT
 		ldr	\tmp, =omap_uart_virt
 		str	\rx, [\tmp, #0]
 		mov	\rx, #(UART_LSR << ZOOM_PORT_SHIFT)
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 87f676a..3cfb425 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -166,6 +166,15 @@ static struct map_desc omap34xx_io_desc[] __initdata = {
 		.length		= L4_EMU_34XX_SIZE,
 		.type		= MT_DEVICE
 	},
+#if defined(CONFIG_DEBUG_LL) &&							\
+	(defined(CONFIG_MACH_OMAP_ZOOM2) || defined(CONFIG_MACH_OMAP_ZOOM3))
+	{
+		.virtual	= ZOOM_UART_VIRT,
+		.pfn		= __phys_to_pfn(ZOOM_UART_BASE),
+		.length		= SZ_1M,
+		.type		= MT_DEVICE
+	},
+#endif
 };
 #endif
 #ifdef	CONFIG_ARCH_OMAP4
diff --git a/arch/arm/plat-omap/include/plat/serial.h b/arch/arm/plat-omap/include/plat/serial.h
index 83dce4c..9ec7eab 100644
--- a/arch/arm/plat-omap/include/plat/serial.h
+++ b/arch/arm/plat-omap/include/plat/serial.h
@@ -39,7 +39,7 @@
 
 /* External port on Zoom2/3 */
 #define ZOOM_UART_BASE		0x10000000
-#define ZOOM_UART_VIRT		0xfb000000
+#define ZOOM_UART_VIRT		0xfa400000
 
 #define OMAP_PORT_SHIFT		2
 #define OMAP7XX_PORT_SHIFT	0

--6Nae48J/T25AfBN4--

[PATCH] arm: Fix DEBUG_LL for omap zoom2/3

[Tony Lindgren]

Zoom2 and 3 have UARTs only on the external debug board.
GPMC needs to be mapped early to use it for DEBUG_LL.

Note that with the pending serial.c patches you need to
set console=ttyS0,115200n8 as it will be the only UART
mapped. To use DEBUG_LL, you need to pass also earlyprintk
in cmdline.

Cc: Allen Pais <allen.pais@ti.com>
Cc: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index eb62bf9..355e87d 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -328,6 +328,15 @@ __create_page_tables:
 	add	r0, r4, #0xd8000000 >> 18
 	str	r3, [r0]
 #endif
+#if defined(CONFIG_MACH_OMAP_ZOOM2) || defined(CONFIG_MACH_OMAP_ZOOM3)
+	/*
+	 * Zoom2 and Zoom3 have UARTs only on the debug board.
+	 * The debug board is connected to the GPMC.
+	 */
+	add	r0, r4, #0xfb000000 >> 18
+	orr	r3, r7, #0x10000000
+	str	r3, [r0]
+#endif
 #endif
 	mov	pc, lr
 ENDPROC(__create_page_tables)

--jq0ap7NbKX2Kqbes--