[RFC PATCH] mmc: host: sdhci-iproc: implement the .hw_reset callback

[Florian Fainelli]

On 4/13/26 10:38, Meagan Lloyd wrote:
> 
> On 3/27/2026 3:21 PM, Meagan Lloyd wrote:
>> Implement the .hw_reset callback so that the eMMC can be reset as needed
>> given cap-mmc-hw-reset is set in the devicetree and the functionality is
>> enabled on the eMMC.
>>
>> Signed-off-by: Meagan Lloyd <meaganlloyd at linux.microsoft.com>
>> ---
>>
>> SDHCI_POWER_CONTROL[4] (SD Host Controller Standard) has been repurposed
>> on my Broadcomm processor to be eMMC hardware reset
>> (SDIO*_eMMCSDXC_CTRL[12], HRESET).
>>
>> Can you confirm this repurposed bit is consistent across the Broadcomm
>> iProc processors and thus the .hw_reset callback can be uniformly
>> applied in this driver?
> 
> Hi Ray & Scott,
> 
> I hope you're doing well. This bit looks to have been repurposed from
> the SD Host Controller Standard's VDD2 Power Control to being used for
> toggling the hardware reset signal to eMMCs. Can you verify that it
> applies across the iProc processors so that I may finalize this patch?

Which iProc process are you using? If you are not sure this applies 
broadly, can you at least make it specific to the SoC you are using?
-- 
Florian