Hi Alexey, On Nov 27, 2013, at 9:11 AM, Alexey Brodkin wrote:
> Hi Jaehoon, > > On Wed, 2013-11-27 at 14:33 +0900, Jaehoon Chung wrote: >> Hi, Alexey, >> >> I think good that use the initial fifoth value at register. >> Then we need not to change the value. >> But according to my experiment, some SoC needs to change the fifoth value. >> > > Ok, so let's leave possibility to set "fifoth" manually (if > "host->fifoth_val" != 0 then use provided value; else do nothing) on mmc > controller instantiation. > > Will it work for you? > ATM if no host->fifoth_val value is provided the code will calculate one and write it. Otherwise it will write the one configured. > Still I have a couple of questions to you: > 1. Why there's no example/instance of "host->fifoth_val" setup/usage in > U-Boot source tree? If there was at least one I would leave > "host->fifoth_val". > I would guess it's because everyone uses the default setting of 0 which results in a somewhat sane value. > 2. How come there's no way to set/modify the register in question in > Linux kernel? Don't people use Linux kernel on mentioned selected SoCs > without U-Boot (i.e. "fifoth" gets set by U-Boot before kernel starts)? > That's a good question for the kernel driver devs. > Regards, > Alexey Regards -- Pantelis _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
