On 8 June 2015 at 10:37, Ulf Hansson <ulf.hansson@xxxxxxxxxx> wrote: > [...] > >>> > >>> > Can you test this patch on imx SoC ? >>> > >>> >>> (Your email have some format issue.) >> >> Yeah missed to sent in plain text mode. >> >>> >>> I have tested this patch and it does not break imx SoC. >>> You can add my tag. >>> Tested-by: Dong Aisheng <aisheng.dong@xxxxxxxxxxxxx> >> >> Thanks Dong !! >> >>> >>> However, it looks to me SDHCI_CAN_VDD_180 is only indicating the host VDD >>> capabiliies, not IO voltage capability. > > I think Dong is correct. I don't think SDHCI_CAN_VDD_180 is not /s /is not /is > related to UHS modes at all. > > At least the name of the field (SDHCI_CAN_VDD_180) indicates it's > about VDD/VCC, the core power and not the IO voltage. > >> Are you sure on this ?? If SDHCI host VDD is 1.8V then the cards are >> also capable to operate at 1.8V ? Didn't understand what you mean by >> IO voltage capability >> >> >>> SD3.0 cards require 1.8v IO voltage support. >>> So should this bit affect SD3.0 support? >> >> The preset value resgister says that SDR modes requires 1.8V and we >> disable the modes based on capability or quirk. > > It requires 1.8V *IO voltage*, not VDD/VCC. > > [...] > > Kind regards > Uffe -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
