The intent is if there is no regulator should hit this if statement.
+ if (IS_ERR(host->vqmmc)) {
+ pr_info("%s: no vqmmc regulator found\n", mmc_hostname(mmc));
+ host->vqmmc = NULL;
On Oct 30, 2012, at 9:56 PM, Daniel Drake <d...@laptop.org> wrote:
> On Tue, Oct 30, 2012 at 2:37 PM, Philip Rakity <prak...@nvidia.com> wrote:
>> Intentional.
>>
>> if no vqmmc regulator then just assume it will work.
>
> When you say "it", do you mean "UHS-I support"?
> The code in this case will *disable* UHS-I support, because these lines are
> hit.
> + caps[1] &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |
> + SDHCI_SUPPORT_DDR50);
>
>> if there is a regulator it needs to support 1.8V. (If I remember correctly
>> UHS mode require 1.8V vccq) I need to check if we 1.2V should be allowed
>> but it was not in the spec that I had.
>
> I'm asking about the case when there is no regulator.
>
> Thanks
> Daniel
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