Re: [PATCH] mmc: sdhci: only invoke clock re-tuning for adtc type commands

2014-03-26 Thread Franky Lin
On 03/17/2014 09:51 AM, Franky Lin wrote: Hi Ulf, On 03/17/2014 02:12 AM, Ulf Hansson wrote: On 7 January 2014 19:37, Franky Lin fran...@broadcom.com wrote: For high clock frequency modes, ie. SDR104 and possibly SDR50, the data window on the CMD and DAT lines needs to be tuned. Once tuned to

Re: [PATCH] mmc: sdhci: only invoke clock re-tuning for adtc type commands

2014-03-17 Thread Ulf Hansson
On 7 January 2014 19:37, Franky Lin fran...@broadcom.com wrote: For high clock frequency modes, ie. SDR104 and possibly SDR50, the data window on the CMD and DAT lines needs to be tuned. Once tuned to a sample clock rate, a re-tuning might required because of drifted signal on different lines.

Re: [PATCH] mmc: sdhci: only invoke clock re-tuning for adtc type commands

2014-03-17 Thread Franky Lin
Hi Ulf, On 03/17/2014 02:12 AM, Ulf Hansson wrote: On 7 January 2014 19:37, Franky Lin fran...@broadcom.com wrote: For high clock frequency modes, ie. SDR104 and possibly SDR50, the data window on the CMD and DAT lines needs to be tuned. Once tuned to a sample clock rate, a re-tuning might

Re: [PATCH] mmc: sdhci: only invoke clock re-tuning for adtc type commands

2014-03-15 Thread Franky Lin
Hi Chris and Ulf, On 03/07/2014 11:54 AM, Franky Lin wrote: On 02/24/2014 11:57 AM, Franky Lin wrote: Hi Chris, On 01/07/2014 10:37 AM, Franky Lin wrote: For high clock frequency modes, ie. SDR104 and possibly SDR50, the data window on the CMD and DAT lines needs to be tuned. Once tuned to a

Re: [PATCH] mmc: sdhci: only invoke clock re-tuning for adtc type commands

2014-03-07 Thread Franky Lin
On 02/24/2014 11:57 AM, Franky Lin wrote: Hi Chris, On 01/07/2014 10:37 AM, Franky Lin wrote: For high clock frequency modes, ie. SDR104 and possibly SDR50, the data window on the CMD and DAT lines needs to be tuned. Once tuned to a sample clock rate, a re-tuning might required because of

Re: [PATCH] mmc: sdhci: only invoke clock re-tuning for adtc type commands

2014-02-24 Thread Franky Lin
Hi Chris, On 01/07/2014 10:37 AM, Franky Lin wrote: For high clock frequency modes, ie. SDR104 and possibly SDR50, the data window on the CMD and DAT lines needs to be tuned. Once tuned to a sample clock rate, a re-tuning might required because of drifted signal on different lines. This

[PATCH] mmc: sdhci: only invoke clock re-tuning for adtc type commands

2014-01-07 Thread Franky Lin
For high clock frequency modes, ie. SDR104 and possibly SDR50, the data window on the CMD and DAT lines needs to be tuned. Once tuned to a sample clock rate, a re-tuning might required because of drifted signal on different lines. This re-tuning is needed and only necessary for commands using the