Re: [PATCH v3] mmc: core: Verify SD bus width

2019-05-03 Thread Ulf Hansson
On Mon, 29 Apr 2019 at 19:32, Raul E Rangel wrote: > > The SD Physical Layer Spec says the following: Since the SD Memory Card > shall support at least the two bus modes 1-bit or 4-bit width, then any SD > Card shall set at least bits 0 and 2 (SD_BUS_WIDTH="0101"). > > This change verifies the car

[PATCH v3] mmc: core: Verify SD bus width

2019-04-29 Thread Raul E Rangel
The SD Physical Layer Spec says the following: Since the SD Memory Card shall support at least the two bus modes 1-bit or 4-bit width, then any SD Card shall set at least bits 0 and 2 (SD_BUS_WIDTH="0101"). This change verifies the card has specified a bus width. AMD SDHC Device 7806 can get into