On 03/02/2016 08:20, Michal Simek wrote: > Hi, > > On 3.2.2016 03:33, Shawn Lin wrote: >> + Michal, Sören Brinkmann >> >> On 2016/2/2 17:49, Mason wrote: >>> Hello everyone, >>> >>> Documentation/devicetree/bindings/mmc/arasan,sdhci.txt states: >>> >>> Required Properties: >>> - compatible: Compatibility string. Must be 'arasan,sdhci-8.9a' or >>> 'arasan,sdhci-4.9a' or 'arasan,sdhci-5.1' >>> >>> What do 8.9a, 4.9a, and 5.1 refer to? >>> >> >> Good question. >> >> Michal told me that 8.9a and 4.9a came from Xilinx >> databook which define their available arasan controller to be version >> 4.9a and 8.9a. > > Our version is coming from here. > http://www.xilinx.com/support/documentation/user_guides/ug585-Zynq-7000-TRM.pdf > page 28 > > Datasheets from 2012 and 2010 doesn't look too recent and I expect that > Arasan did a lot of work from that time that's why I am not surprised > that you are not able to see that versions. Hello Michal, I'm even more confused. Arasan's 2010-02-19 data sheet is titled SD3.0 / SDIO3.0 / eMMC4.4 AHB Host Controller Page 28 of the Xilinx data sheet mentions SD2.0 / SDIO2.0 / MMC3.31 AHB Host Controller Version 8.9A_apr02nd_2010 It does not make sense that Arasan would support SD3.0 in February, then go back to SD 2.0 in April. I do note eMMC4.4 vs MMC3.31 => perhaps these are two *different* IP blocks? Do your data sheets come with revision history? Regards. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
