mmc: forced sector mode when accessing OCR register
PATCH 1/1 mmc: forced sector mode when accessing OCR register
Some eMMC require this setting to work properly. Tested on:
- Toshiba THGBM2G8D8FBAIB (the one giving the problem)
- Toshiba THGBM4G4D1HBAR
- Micron MTFC4GMVEA
- Hynix H26M64002BNR
- SanDisk SDIN5E1-32G
--- drivers/mmc/mmc.c | 3 ++- include/mmc.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-)
drivers/mmc/mmc.c +2 -1
@@ -530,7 +530,8 @@ static int mmc_send_op_cond(struct mmc *mmc) cmd.cmdarg = (mmc_host_is_spi (mmc) ?0 : (mmc->voltages & (cmd.response[0 ] &OCR_VOLTAGE_MASK )) | - (cmd.response[0 ] &OCR_ACCESS_MODE )); + (cmd.response[0 ] &OCR_ACCESS_MODE )) | +OCR_ACCESS_SECTOR_MODE ;if (mmc->host_caps &MMC_MODE_HC ) cmd.cmdarg |=OCR_HCS ;
include/mmc.h +1 -0
@@ -108,6 +108,7 @@#define OCR_HCS 0x40000000#define OCR_VOLTAGE_MASK 0x007FFF80#define OCR_ACCESS_MODE 0x60000000 +#define OCR_ACCESS_SECTOR_MODE (1 << 30)#define SECURE_ERASE 0x80000000
Signature · 20 lines
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PATCH 1/1 mmc: forced sector mode when accessing OCR register
Hi,
i didn't understand why need to set by force?
Best Regards,
Jaehoon Chung
2012/11/29 Davide Bonfanti <[email protected]>:
Quoted 66 lines
Some eMMC require this setting to work properly. Tested on:
- Toshiba THGBM2G8D8FBAIB (the one giving the problem)
- Toshiba THGBM4G4D1HBAR
- Micron MTFC4GMVEA
- Hynix H26M64002BNR
- SanDisk SDIN5E1-32GSigned-off-by Davide Bonfanti <[email protected]>--- drivers/mmc/mmc.c | 3 ++- include/mmc.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-)drivers/mmc/mmc.c +2
-1@@ -530,7 +530,8 @@ static int mmc_send_op_cond(struct mmc *mmc) cmd.cmdarg = (mmc_host_is_spi (mmc) ?0 : (mmc->voltages & (cmd.response[0 ] &OCR_VOLTAGE_MASK )) | - (cmd.response[0 ] &OCR_ACCESS_MODE )); + (cmd.response[0 ] &OCR_ACCESS_MODE )) | +OCR_ACCESS_SECTOR_MODE ;if (mmc->host_caps &MMC_MODE_HC ) cmd.cmdarg |=OCR_HCS ;include/mmc.h +1
-1@@ -108,6 +108,7 @@#define OCR_HCS 0x40000000#define OCR_VOLTAGE_MASK 0x007FFF80#define OCR_ACCESS_MODE 0x60000000 +#define OCR_ACCESS_SECTOR_MODE (1 << 30)#define SECURE_ERASE 0x80000000 --1.7.9.5
Ce message, ainsi que tous les fichiers joints ? ce message, peuvent contenir des informations sensibles et/ ou confidentielles ne devant pas ?tre divulgu?es. Si vous n'?tes pas le destinataire de ce message (ou que vous recevez ce message par erreur), nous vous remercions de le notifier imm?diatement ? son exp?diteur, et de d?truire ce message. Toute copie, divulgation, modification, utilisation ou diffusion, non autoris?e, directe ou indirecte, de tout ou partie de ce message, est strictement interdite.
This e-mail, and any document attached hereby, may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized, direct or indirect, copying, disclosure, distribution or other use of the material or parts thereof is strictly forbidden.
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PATCH 1/1 mmc: forced sector mode when accessing OCR register
It seems to me a bug of the specific mmc like if that it declares byte-mode, but supports only sector mode.
Sincerely I don't know if it is a good idea to accept a workaround like this, but this is the only way I found to have my board working.
Best Regards,
Davide Bonfanti
-----Jae hoon Chung <[email protected]> ha scritto: -----Per: Davide Bonfanti <[email protected]>
Da: Jae hoon Chung <[email protected]>
Data: 29/11/2012 16:10
Cc: u-boot at lists.denx.de, afleming at gmail.com, Jaehoon Chung <[email protected]>
Oggetto: Re: [U-Boot] [PATCH v0] mmc: forced sector mode when accessing OCR register
Hi,
i didn't understand why need to set by force?
Best Regards,
Jaehoon Chung
2012/11/29 Davide Bonfanti <[email protected]>:
Quoted 66 lines
Some eMMC require this setting to work properly. Tested on:
?- Toshiba THGBM2G8D8FBAIB (the one giving the problem) ?- Toshiba THGBM4G4D1HBAR
?- Micron MTFC4GMVEA
?- Hynix H26M64002BNR
?- SanDisk SDIN5E1-32GSigned-off-by Davide Bonfanti <[email protected]>---
?drivers/mmc/mmc.c | ? ?3 ++-
?include/mmc.h ? ? | ? ?1 +
?2 files changed, 3 insertions(+), 1 deletion(-)drivers/mmc/mmc.c +0
-0@@ -530,7 +530,8 @@ static int mmc_send_op_cond(struct mmc *mmc)? ?cmd.cmdarg = (
mmc_host_is_spi(mmc)? 0 :
? ? ?(mmc->voltages &
? ? ?(cmd.response[0] &OCR_VOLTAGE_MASK)) |
- ? ?(cmd.response[0] &OCR_ACCESS_MODE));
+ ? ?(cmd.response[0] &OCR_ACCESS_MODE)) |
+ ? ?OCR_ACCESS_SECTOR_MODE;? ?if (
mmc->host_caps&MMC_MODE_HC)
? ? cmd.cmdarg |=OCR_HCS;include/mmc.h +0
-0@@ -108,6 +108,7 @@?#define
OCR_HCS?0x40000000
?#defineOCR_VOLTAGE_MASK0x007FFF80
?#defineOCR_ACCESS_MODE?0x60000000
+#defineOCR_ACCESS_SECTOR_MODE?(1 << 30)?#define
SECURE_ERASE?0x80000000--
1.7.9.5Ce message, ainsi que tous les fichiers joints ? ce message, peuvent contenir des informations sensibles et/ ou confidentielles ne devant pas ?tre divulgu?es. Si vous n'?tes pas le destinataire de ce message (ou que vous recevez ce message par erreur), nous vous remercions de le notifier imm?diatement ? son exp?diteur, et de d?truire ce message. Toute copie, divulgation, modification, utilisation ou diffusion, non autoris?e, directe ou indirecte, de tout ou partie de ce message, est strictement interdite.
This e-mail, and any document attached hereby, may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized, direct or indirect, copying, disclosure, distribution or other use of the material or parts thereof is strictly forbidden.
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http://lists.denx.de/mailman/listinfo/u-boot