Re: [PATCH v2 3/6] mmc: core: implement enhanced strobe support

2016-05-10 Thread Shawn Lin
On 2016/5/9 19:56, Adrian Hunter wrote: On 29/04/16 05:47, Shawn Lin wrote: Controllers use data strobe line to latch data from devices under hs400 mode, but not for cmd line. So since emmc 5.1, JEDEC introduces enhanced strobe mode for latching cmd response from emmc devices to host controllers

Re: [PATCH v2 3/6] mmc: core: implement enhanced strobe support

2016-05-09 Thread Adrian Hunter
On 29/04/16 05:47, Shawn Lin wrote: > Controllers use data strobe line to latch data from devices > under hs400 mode, but not for cmd line. So since emmc 5.1, JEDEC > introduces enhanced strobe mode for latching cmd response from > emmc devices to host controllers. This new feature is optional, > s

Re: [PATCH v2 3/6] mmc: core: implement enhanced strobe support

2016-05-04 Thread Shawn Lin
On 2016/5/4 20:02, Ulf Hansson wrote: On 29 April 2016 at 04:47, Shawn Lin wrote: Controllers use data strobe line to latch data from devices under hs400 mode, but not for cmd line. So since emmc 5.1, JEDEC introduces enhanced strobe mode for latching cmd response from emmc devices to host cont

Re: [PATCH v2 3/6] mmc: core: implement enhanced strobe support

2016-05-04 Thread Adrian Hunter
>> diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c >> index 4bc48f1..7e94b9d 100644 >> --- a/drivers/mmc/core/bus.c >> +++ b/drivers/mmc/core/bus.c >> @@ -332,12 +332,13 @@ int mmc_add_card(struct mmc_card *card) >> mmc_card_ddr52(card) ? "DDR " : "", >>

Re: [PATCH v2 3/6] mmc: core: implement enhanced strobe support

2016-05-04 Thread Ulf Hansson
On 29 April 2016 at 04:47, Shawn Lin wrote: > Controllers use data strobe line to latch data from devices > under hs400 mode, but not for cmd line. So since emmc 5.1, JEDEC > introduces enhanced strobe mode for latching cmd response from > emmc devices to host controllers. This new feature is opti

[PATCH v2 3/6] mmc: core: implement enhanced strobe support

2016-04-28 Thread Shawn Lin
Controllers use data strobe line to latch data from devices under hs400 mode, but not for cmd line. So since emmc 5.1, JEDEC introduces enhanced strobe mode for latching cmd response from emmc devices to host controllers. This new feature is optional, so it depends both on device's cap and host's c