From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-1?Q?Andreas_Bie=DFmann?= Date: Wed, 09 Apr 2014 17:16:07 +0200 Subject: [U-Boot] data abort in omap_gpio Message-ID: <53456437.5080402@googlemail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi all, I've encountered a data abort in tricorder board when switching gpio's. Here is the trace: ---8<--- gpio_direction_output (gpio=, value=0) at /home/abiessmann/src/u-boot/drivers/gpio/omap_gpio.c:197 197 _set_gpio_dataout(bank, get_gpio_index(gpio), value); (gdb) s _set_gpio_dataout (gpio=, value=0) at /home/abiessmann/src/u-boot/drivers/gpio/omap_gpio.c:102 102 void *reg = bank->base; (gdb) s 105 switch (bank->method) { (gdb) s 107 if (enable) (gdb) list 102 void *reg = bank->base; 103 u32 l = 0; 104 105 switch (bank->method) { 106 case METHOD_GPIO_24XX: 107 if (enable) 108 reg += OMAP_GPIO_SETDATAOUT; 109 else 110 reg += OMAP_GPIO_CLEARDATAOUT; 111 l = 1 << gpio; (gdb) s 111 l = 1 << gpio; (gdb) s 108 reg += OMAP_GPIO_SETDATAOUT; (gdb) s 110 reg += OMAP_GPIO_CLEARDATAOUT; (gdb) s 111 l = 1 << gpio; (gdb) s 118 __raw_writel(l, reg); (gdb) print/x l $18 = 0x800 (gdb) print/x reg $19 = 0x49050090 (gdb) s ^C Program received signal SIGSTOP, Stopped (signal). _start ()@/home/abiessmann/src/u-boot/arch/arm/cpu/armv7/start.S:27 27 ldr pc, _data_abort (gdb) --->8--- Anyone aware of that? I'll dive into that tomorrow. If anyone knows that problem a pointer would be good. Best regards Andreas Bie?mann