Subject: Re: [PATCH v3 08/11] mmc: sd: add support for tuning during
uhs initialization
[...]
@@ -1477,12 +1481,146 @@ static int
sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
return 0;
}
+static int sdhci_execute_tuning(struct mmc_host *mmc)
+{
+ struct
Host Controller needs tuning during initialization to operate SDR50
and SDR104 UHS-I cards. Whether SDR50 mode actually needs tuning is
indicated by bit 45 of the Host Controller Capabilities register.
A new command CMD19 has been defined in the Physical Layer spec
v3.01 to request the card to
