* MichaÅ MirosÅaw <mirqus@xxxxxxxxx> [100924 09:03]:
> W dniu 24 wrzeÅnia 2010 17:38 uÅytkownik Cory Maccarrone
> <darkstar6262@xxxxxxxxx> napisaÅ:
> > 2010/9/24 MichaÅ MirosÅaw <mirqus@xxxxxxxxx>:
> >> 2010/8/18 Cory Maccarrone <darkstar6262@xxxxxxxxx>:
> >>> This change adds in MMC and I2C support to the HTC Herald board, as well
> >>> as adding the HTCPLD driver for the PLD used on this phone. ÂIt also
> >>> adds in the gpio-keys entries for the front directional keys and
> >>> selector and the cursor keys on the slide-out keyboard, and gpio-leds
> >>> support for the LEDs attached to the htcpld.
> >>>
> >>> Additionally, SPI bus support (using the spi100k driver) and
> >>> touchscreen support (using the ads7846 driver) were added.
> >>>
> >>> Signed-off-by: Cory Maccarrone <darkstar6262@xxxxxxxxx>
> >>> ---
> >> [...]
> >>> +/* MMC Card */
> >>> +#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
> >>> +static struct omap_mmc_platform_data htc_mmc1_data = {
> >>> +    .nr_slots            = 1,
> >>> +    .switch_slot          Â= NULL,
> >>> + Â Â Â .slots[0] Â Â Â = {
> >>> +        .ocr_mask        = MMC_VDD_28_29 | MMC_VDD_30_31 |
> >>> + Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â MMC_VDD_32_33 | MMC_VDD_33_34,
> >>> +        .name          = "mmcblk",
> >>> +        .nomux         Â= 1,
> >>> +        .wires         Â= 4,
> >>> +        .switch_pin       = -1,
> >>> + Â Â Â },
> >>> +};
> >> [...]
> >> What voltages can this MMC controller provide? That's a rather unusual OCR mask.
> > Not really sure, I wasn't the one who first came up with that mask.
> > All I know is that it seems to work, and not just for my device, but
> > lots of other HTC OMAP850 devices we've tried it on too.
> >
> > I'm interested though, what in particular makes it unusual?
>
> It specifies, that device supports voltage ranges:
> 2.8V - 2.9V, 3.0V - 3.1V, 3.2V - 3.4V
> (so: 2.9V - 3.0V and 3.1V - 3.2V are not available).
> Are there really 2.8V, 3.0V, 3.3V VDDs settable?
>
> If the host supports only VDD = 3.3V for example, then correct OCR
> mask would be: MMC_VDD_32_33 | MMC_VDD_33_34 (or just one flag).
Looks like also board-sx1-mmc.c and board-h[23]-mmc.c have the
same spotty voltage range.
Cory, care to do a patch that fixes it for all of them?
Regards,
Tony
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