On Feb 12, 2008 10:37 AM, Nick <[EMAIL PROTECTED]> wrote: > Hi, > > I need some help. I am trying to access timer 7 on the MPC5200B > processor. I have the DTS file setup like this > > [EMAIL PROTECTED] { // General Purpose Timer > device_type = "gpt"; > compatible = "fsl,mpc5200b-gpt","fsl,mpc5200-gpt"; > cell-index = <7>; > reg = <670 10>; > interrupts = <1 10 0>; > interrupt-parent = <&mpc5200_pic>; > }; > > I have timers 0 to 6 defined the same way except the cell-index reflects > the timer number. > > In my platform file where I am doing my board setup, I tried the following. > > timer7 = mpc52xx_find_and_map ("mpc5200b-gpt");
Don't use find_and_map; it was a stupid API that I never should have written. Instead, use for_each_compatible_node() or for_each_matching_node() to iterate over them until you find the one with the correct reg address. Then you can use of_iomap() to map the device registers. > How do I specify the timer based on the cell-index? Match on the reg property instead of cell-index; I'll probably be dropping the cell-index property from future 5200 device trees because it just ends up duplicating information already provided by reg. Cheers, g. -- Grant Likely, B.Sc., P.Eng. Secret Lab Technologies Ltd. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev