On 04/10/2014 09:22 AM, Andreas Bießmann wrote: > On 04/09/2014 05:37 PM, Tom Rini wrote: >> On Wed, Apr 09, 2014 at 05:22:57PM +0200, Andreas Bießmann wrote: > >>> (gdb) s >>> 118 __raw_writel(l, reg); >>> (gdb) print/s l >>> $17 = 2048 >>> (gdb) print/x l >>> $18 = 0x800 >>> (gdb) print/x reg >>> $19 = 0x49050090 >>> (gdb) s >>> ^C >>> Program received signal SIGSTOP, Stopped (signal). >>> _start () at /home/abiessmann/src/u-boot/arch/arm/cpu/armv7/start.S:27 >>> 27 ldr pc, _data_abort >>> (gdb) >>> --->8--- >>> >>> (Encounterd with tricorder board current ToT) >>> >>> I'll dive into that tomorrow. If anyone has some pointeres, please speak >>> out loud ;) >> >> You need to add the relevant CONFIG_OMAP3_GPIO_n define to enable >> clocks/etc for the gpios being used. >> > > Well, it is GPIO 42/43 which is located in bank 1. These clocks are not > enabled explicitly in 708cfb74b7c6df9c37d3c48988a154be79daefeb. I > haven't followed the dsicussen but wonder why we do not switch the > clocks on gpio_request(). > > So is it seems that 708cfb74b7c6df9c37d3c48988a154be79daefeb missed to > enable clocks for bank 1. I'll try that.
Got it working. The numbering starts with '1' here (not '0'). Therefore GPIO 42/43 is in bank 2. Enabling that bank with CONFIG_OMAP3_GPIO_2 stops data abort Thanks for the hint! Fixup patch series for 2014.04 coming today. Best Regards Andreas Bießmann _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
