On Tue, 12 Nov 2013 20:23:20 +0100 neorf3k <neor...@gmail.com> wrote:
> we have tried to read and program an 8bit register with 32bit address. > we have mapped it with: ioremap, kmalloc etc… and then using: outb, > iowrite8 etc.. but when we write to it, the value doesn’t change… > with other memory location is ok. > That is an 8 bit register, located at 0x10020000 in a mpc5200b > architecture. we are using kernel 2.6.33. > what could be? 0x10020000 is not in the internal register memory map, so it is probably a device on the LocalPlus bus. Did you configure the chip select parameters for this device and did you enable the associated chip select? HTH, Anatolij _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
