[U-Boot] [PATCH] OMAP3 Beagle Pin Mux initialization glitch fix
The below patch reverses the order of two segments in the board file. Output pins need to have their values initialized, before they are exposed to the logic outside the chip.
Signed-off-by: Bob Feretich bob.feretich@rafresearch.com Cc: Wolfgang Denk wd@denx.de ---
diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c --- a/board/ti/beagle/beagle.c 2011-02-23 17:26:27.000000000 -0800 +++ b/board/ti/beagle/beagle.c 2011-02-23 17:47:44.000000000 -0800 @@ -239,17 +239,17 @@ int misc_init_r(void) twl4030_power_init(); twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
- /* Configure GPIOs to output */ - writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe); - writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | - GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe); - - /* Set GPIOs */ + /* Set GPIO states before they are made outputs */ writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1, &gpio6_base->setdataout); writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
+ /* Configure GPIOs to output */ + writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe); + writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | + GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe); + dieid_num_r();
return 0; --
On Thu, Feb 24, 2011 at 6:16 PM, Bob Feretich bob.feretich@rafresearch.com wrote:
The below patch reverses the order of two segments in the board file. Output pins need to have their values initialized, before they are exposed to the logic outside the chip.
Signed-off-by: Bob Feretich bob.feretich@rafresearch.com Cc: Wolfgang Denk wd@denx.de
Looks good to me. Thanks Bob! We'll try to pick this up in the default u-boot that ships with the board.
diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c --- a/board/ti/beagle/beagle.c 2011-02-23 17:26:27.000000000 -0800 +++ b/board/ti/beagle/beagle.c 2011-02-23 17:47:44.000000000 -0800 @@ -239,17 +239,17 @@ int misc_init_r(void) twl4030_power_init(); twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
- /* Configure GPIOs to output */
- writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
- writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
- GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
- /* Set GPIOs */
- /* Set GPIO states before they are made outputs */
writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1, &gpio6_base->setdataout); writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
- /* Configure GPIOs to output */
- writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
- writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
- GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
dieid_num_r();
return 0;
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