Re: sdhci : reduce irq off latency

2010-06-18 Thread Matthieu CASTET
Hi, Thanks you for the test. here a new version of the patch. It doesn't replace mdelay with jiffies anymore. It changes mdelay to udelay (the granularity of 1 ms becomes 10 us). I didn't mesure irq off latency with this patch. Matthieu Kyungmin Park a écrit : Hi, Not good news. This

Re: sdhci : reduce irq off latency

2010-06-18 Thread Kyungmin Park
The main problem is sdhci_send_command function. it loops at while function infinitely. I just modify it to use udelay at there. then it's working well. also I reduce the granularity as 1 usec instead of 10 usec (as you suggested). it's also works. Thank you, Kyungmin Park On Fri, Jun 18, 2010

Re: [PATCH v2] Recognize CSD structure version 3

2010-06-18 Thread zhangfei gao
Hi, Kyungmin I have verified on marvell pxa688 platform for sandisk 4.4 emmc, it works. Thanks for sharing. Thanks zhangfei On Thu, Jun 3, 2010 at 12:20 PM, Kyungmin Park kmp...@infradead.org wrote: The eMMC spec 4.4 and 4.3 + additional feature chips has CSD structure version 3 and version

Re: [PATCH] mmc: change initial clock setting

2010-06-18 Thread Matt Fleming
On Fri, 18 Jun 2010 13:05:44 +0900, Jaehoon Chung jh80.ch...@samsung.com wrote: This patch is bug fixed.. I think that host-ios.clock(initial clock) will be set lower than 400KHz. But in this code, if host-f_min is higher than 400KHz, print warning message and set higher than 400KHz. And We

[PATCH v2 00/26] Add support for the Ingenic JZ4740 System-on-a-Chip

2010-06-18 Thread Lars-Peter Clausen
Foreword: Ralf suggested that it might be a good idea in order to allow for reasonable testing and to avoid build failures due to two-way dependencies in different parts of the kernel, that he applies all the patches once they have been acked by their respective maintainers, feeds them into -next