Yes, I'm processing my queue today. On Nov 26, 2012, at 17:27, "Stephen Warren" <swar...@wwwdotorg.org> wrote:
> On 10/31/2012 11:02 PM, Andy Fleming wrote: >> At some point, a confusion arose about the use of the bit >> definitions in host_caps for bus widths, and the value >> in ext_csd. By coincidence, a simple shift could convert >> between one and the other: >> >> MMC_MODE_1BIT = 0, EXT_CSD_BUS_WIDTH_1 = 0 >> MMC_MODE_4BIT = 0x100, EXT_CSD_BUS_WIDTH_4 = 1 >> MMC_MODE_8BIT = 0x200, EXT_CSD_BUS_WIDTH_8 = 2 >> >> However, as host_caps is a bitmask of supported things, >> there is not, in fact, a one-to-one correspondence. host_caps >> is capable of containing MODE_4BIT | MODE_8BIT, so nonsensical >> things were happening where we would try to set the bus width >> to 12. >> >> The new code clarifies the very different namespaces: >> >> host_caps/card_caps = bitmask (MMC_MODE_*) >> ext CSD fields are just an index (EXT_CSD_BUS_WIDTH_*) >> mmc->bus_width integer number of bits (1, 4, 8) >> >> We create arrays to map between the namespaces, like in Linux. > > Andy, is this patch likely to get merged soon to u-boot.git branch > master? Unfortunately, some Tegra patches that ideally rely on this > patch being present have already been applied and merged into > u-boot-arm.git branch master. > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot