Re: [PATCH v2 7/9] mmc: sh_mobile_sdhi: Add UHS-I mode support

2016-04-04 Thread Ulf Hansson
On 4 April 2016 at 17:17, Wolfram Sang wrote: > >> > + usleep_range(5000, 5500); >> >> Why do you need this delay/sleep? > > My datasheet says to wait at least 5ms before re-enabling the clock > after a voltage switch... > > Ah, found it in the core. It is doing it for

Re: [PATCH v2 7/9] mmc: sh_mobile_sdhi: Add UHS-I mode support

2016-04-04 Thread Ulf Hansson
On 1 April 2016 at 17:44, Wolfram Sang wrote: > From: Wolfram Sang > > Implement voltage switch, supporting modes up to SDR-50. > > Based on work by Shinobu Uehara, Rob Taylor, William Towle and Ian Molton. > > Signed-off-by: Ben Hutchings

[PATCH v2 7/9] mmc: sh_mobile_sdhi: Add UHS-I mode support

2016-04-01 Thread Wolfram Sang
From: Wolfram Sang Implement voltage switch, supporting modes up to SDR-50. Based on work by Shinobu Uehara, Rob Taylor, William Towle and Ian Molton. Signed-off-by: Ben Hutchings Signed-off-by: Wolfram Sang