Thomas Abraham wrote at Wednesday, October 05, 2011 8:28 AM: > On 5 October 2011 18:59, Rob Herring <robherring2@xxxxxxxxx> wrote: > > On 10/05/2011 05:13 AM, Thomas Abraham wrote: > >> Device nodes representing sd/mmc controllers in a device tree would include > >> mmc host controller capabilities. Add support for parsing of mmc host > >> controller capabilities included in device nodes. ... > >> +- linux,mmc_cap_4_bit_data - host can do 4 bit transfers > >> +- linux,mmc_cap_mmc_highspeed - host can do MMC high-speed timing > >> +- linux,mmc_cap_sd_highspeed - host can do SD high-speed timing > >> +- linux,mmc_cap_needs_poll - host needs polling for card detection > >> +- linux,mmc_cap_8_bit_data - host can do 8 bit transfer > > > > "sdhci,1-bit-only" already exists as a binding. Perhaps add > > "sdhci,4-bit-only". No property then means can do 8-bit. > > Ok. But that would remain just as sdhci host controller capability and > will not be applicable to other types of host controllers. Just as an FYI, NVIDIA's SDHCI controller bindings use property "support-8bit" to indicate 8-bit support. A similar property could be used for 4-bit support too. -- nvpublic -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
