Re: [RFC PATCH] mmc: dw_mmc: add status check before clock update

2015-02-16 Thread Andrzej Hajda
On 02/13/2015 12:10 PM, Jaehoon Chung wrote: > On 02/13/2015 05:13 PM, Andrzej Hajda wrote: >> On 02/13/2015 08:30 AM, Jaehoon Chung wrote: >>> Hi, Andrzej. >>> >>> On 02/13/2015 01:53 AM, Javier Martinez Canillas wrote: Hello Andrzej, On Wed, Feb 11, 2015 at 10:06 AM, Andrzej Hajda

Re: [RFC PATCH] mmc: dw_mmc: add status check before clock update

2015-02-13 Thread Jaehoon Chung
On 02/13/2015 05:13 PM, Andrzej Hajda wrote: > On 02/13/2015 08:30 AM, Jaehoon Chung wrote: >> Hi, Andrzej. >> >> On 02/13/2015 01:53 AM, Javier Martinez Canillas wrote: >>> Hello Andrzej, >>> >>> On Wed, Feb 11, 2015 at 10:06 AM, Andrzej Hajda wrote: On 02/11/2015 09:32 AM, Jaehoon Chung wro

Re: [RFC PATCH] mmc: dw_mmc: add status check before clock update

2015-02-13 Thread Andrzej Hajda
On 02/13/2015 08:30 AM, Jaehoon Chung wrote: > Hi, Andrzej. > > On 02/13/2015 01:53 AM, Javier Martinez Canillas wrote: >> Hello Andrzej, >> >> On Wed, Feb 11, 2015 at 10:06 AM, Andrzej Hajda wrote: >>> On 02/11/2015 09:32 AM, Jaehoon Chung wrote: On 02/11/2015 04:51 PM, Andrzej Hajda wrote:

Re: [RFC PATCH] mmc: dw_mmc: add status check before clock update

2015-02-12 Thread Jaehoon Chung
Hi, Andrzej. On 02/13/2015 01:53 AM, Javier Martinez Canillas wrote: > Hello Andrzej, > > On Wed, Feb 11, 2015 at 10:06 AM, Andrzej Hajda wrote: >> On 02/11/2015 09:32 AM, Jaehoon Chung wrote: >>> On 02/11/2015 04:51 PM, Andrzej Hajda wrote: Hi, Thanks for comments. On 0

Re: [RFC PATCH] mmc: dw_mmc: add status check before clock update

2015-02-12 Thread Javier Martinez Canillas
Hello Andrzej, On Wed, Feb 11, 2015 at 10:06 AM, Andrzej Hajda wrote: > On 02/11/2015 09:32 AM, Jaehoon Chung wrote: >> On 02/11/2015 04:51 PM, Andrzej Hajda wrote: >>> Hi, >>> >>> Thanks for comments. >>> >>> On 02/10/2015 03:54 PM, Alim Akhtar wrote: Hi Andrzej, On Tue, Feb 10, 2

Re: [RFC PATCH] mmc: dw_mmc: add status check before clock update

2015-02-11 Thread Andrzej Hajda
On 02/11/2015 09:32 AM, Jaehoon Chung wrote: > On 02/11/2015 04:51 PM, Andrzej Hajda wrote: >> Hi, >> >> Thanks for comments. >> >> On 02/10/2015 03:54 PM, Alim Akhtar wrote: >>> Hi Andrzej, >>> >>> On Tue, Feb 10, 2015 at 7:59 PM, Andrzej Hajda wrote: According to specs for version 250A, sta

Re: [RFC PATCH] mmc: dw_mmc: add status check before clock update

2015-02-11 Thread Jaehoon Chung
On 02/11/2015 04:51 PM, Andrzej Hajda wrote: > Hi, > > Thanks for comments. > > On 02/10/2015 03:54 PM, Alim Akhtar wrote: >> Hi Andrzej, >> >> On Tue, Feb 10, 2015 at 7:59 PM, Andrzej Hajda wrote: >>> According to specs for version 250A, status register should be >>> tested before clock update.

Re: [RFC PATCH] mmc: dw_mmc: add status check before clock update

2015-02-10 Thread Andrzej Hajda
Hi, Thanks for comments. On 02/10/2015 03:54 PM, Alim Akhtar wrote: > Hi Andrzej, > > On Tue, Feb 10, 2015 at 7:59 PM, Andrzej Hajda wrote: >> According to specs for version 250A, status register should be >> tested before clock update. Otherwise in case MMC card is missing >> mci_send_cmd timeo

Re: [RFC PATCH] mmc: dw_mmc: add status check before clock update

2015-02-10 Thread Alim Akhtar
Hi Andrzej, On Tue, Feb 10, 2015 at 7:59 PM, Andrzej Hajda wrote: > According to specs for version 250A, status register should be > tested before clock update. Otherwise in case MMC card is missing > mci_send_cmd timeouts and subsequent CTYPE registry write causes system hang. > This behavior ha

[RFC PATCH] mmc: dw_mmc: add status check before clock update

2015-02-10 Thread Andrzej Hajda
According to specs for version 250A, status register should be tested before clock update. Otherwise in case MMC card is missing mci_send_cmd timeouts and subsequent CTYPE registry write causes system hang. This behavior has been observed on Exynos5422/Odroid-XU3. Signed-off-by: Andrzej Hajda ---

[PATCH] mmc: dw_mmc: add status check before clock update

2015-02-10 Thread Andrzej Hajda
According to specs for version 250A, status register should be tested before clock update. Otherwise in case MMC card is missing mci_send_cmd timeouts and subsequent CTYPE registry write causes system hang. This behavior has been observed on Exynos5422/Odroid-XU3. Signed-off-by: Andrzej Hajda ---