Re: [PATCH] MMC: Clean up low voltage range handling

2007-03-11 Thread Philip Langdale
Pierre Ossman wrote: > > We must not have the same specs. My simplified SD 2.0 physical spec > defines everything below bit 15 as reserved. I was a little unclear. Both specs define bit 7 as the low-voltage range but only the MMC spec defines the actual voltage. As such, there is no complete

Re: [PATCH] MMC: Clean up low voltage range handling

2007-03-11 Thread Pierre Ossman
Philip Langdale wrote: > Clean up the handling of low voltage MMC cards. > > > The latest MMC and SD specs both agree that the low > voltage range is defined as 1.65-1.95V and is signified > by bit 7 in the OCR. An old Sandisk spec implied that > bits 7-0 represented voltages below 2.0V in 1V

Re: [PATCH] MMC: Clean up low voltage range handling

2007-03-11 Thread Pierre Ossman
Philip Langdale wrote: Clean up the handling of low voltage MMC cards. The latest MMC and SD specs both agree that the low voltage range is defined as 1.65-1.95V and is signified by bit 7 in the OCR. An old Sandisk spec implied that bits 7-0 represented voltages below 2.0V in 1V

Re: [PATCH] MMC: Clean up low voltage range handling

2007-03-11 Thread Philip Langdale
Pierre Ossman wrote: We must not have the same specs. My simplified SD 2.0 physical spec defines everything below bit 15 as reserved. I was a little unclear. Both specs define bit 7 as the low-voltage range but only the MMC spec defines the actual voltage. As such, there is no complete

[PATCH] MMC: Clean up low voltage range handling

2007-03-10 Thread Philip Langdale
Clean up the handling of low voltage MMC cards. The latest MMC and SD specs both agree that the low voltage range is defined as 1.65-1.95V and is signified by bit 7 in the OCR. An old Sandisk spec implied that bits 7-0 represented voltages below 2.0V in 1V increments, and the code was accordingly

[PATCH] MMC: Clean up low voltage range handling

2007-03-10 Thread Philip Langdale
Clean up the handling of low voltage MMC cards. The latest MMC and SD specs both agree that the low voltage range is defined as 1.65-1.95V and is signified by bit 7 in the OCR. An old Sandisk spec implied that bits 7-0 represented voltages below 2.0V in 1V increments, and the code was accordingly