On Thu, May 21, 2015 at 09:24:43AM +0000, Joakim Tjernlund wrote: > The HW 8BIT can be confused with SDHCI_CTRL_HISPD(0x04) as it is the same bit. > > However, now I see that esdhc_writeb() has > /* Prevent SDHCI core from writing reserved bits (e.g. HISPD). */ > if (reg == SDHCI_HOST_CONTROL) > val &= ~ESDHC_HOST_CONTROL_RES; > and > #define ESDHC_HOST_CONTROL_RES 0x05 > > so any esdhc_writeb() to SDHCI_HOST_CONTROL will clear the HW 8BIT. > What a mess. Aha, I see. Thanks for the explanation. Thanks, Kevin
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