diff options
Diffstat (limited to 'recipes/u-boot/u-boot-git/beagleboard/0001-OMAP3-Beagle-Pin-Mux-initialization-glitch-fix.patch')
| -rw-r--r-- | recipes/u-boot/u-boot-git/beagleboard/0001-OMAP3-Beagle-Pin-Mux-initialization-glitch-fix.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/recipes/u-boot/u-boot-git/beagleboard/0001-OMAP3-Beagle-Pin-Mux-initialization-glitch-fix.patch b/recipes/u-boot/u-boot-git/beagleboard/0001-OMAP3-Beagle-Pin-Mux-initialization-glitch-fix.patch new file mode 100644 index 0000000000..7e88d7045a --- /dev/null +++ b/recipes/u-boot/u-boot-git/beagleboard/0001-OMAP3-Beagle-Pin-Mux-initialization-glitch-fix.patch @@ -0,0 +1,46 @@ +From 7b250f8be3b8c496796dcdc954c9e5959cefea2c Mon Sep 17 00:00:00 2001 +From: Bob Feretich <bob.feretich@rafresearch.com> +Date: Thu, 24 Feb 2011 13:16:44 +0000 +Subject: [PATCH 01/16] 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> +--- + board/ti/beagle/beagle.c | 12 ++++++------ + 1 files changed, 6 insertions(+), 6 deletions(-) + +diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c +index c066d6e..929461c 100644 +--- a/board/ti/beagle/beagle.c ++++ b/board/ti/beagle/beagle.c +@@ -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; +-- +1.6.6.1 + |