* Michał Mirosław <[email protected]> [100924 09:03]: > W dniu 24 września 2010 17:38 użytkownik Cory Maccarrone > <[email protected]> napisał: > > 2010/9/24 Michał Mirosław <[email protected]>: > >> 2010/8/18 Cory Maccarrone <[email protected]>: > >>> 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. It 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 <[email protected]> > >>> --- > >> [...] > >>> +/* 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 = NULL, > >>> + .slots[0] = { > >>> + .ocr_mask = MMC_VDD_28_29 | MMC_VDD_30_31 | > >>> + MMC_VDD_32_33 | MMC_VDD_33_34, > >>> + .name = "mmcblk", > >>> + .nomux = 1, > >>> + .wires = 4, > >>> + .switch_pin = -1, > >>> + }, > >>> +}; > >> [...] > >> 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 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
