diff options
Diffstat (limited to 'board/ti/beagle/beagle.c')
| -rw-r--r-- | board/ti/beagle/beagle.c | 102 |
1 files changed, 65 insertions, 37 deletions
diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c index 3b4c9e7..4647908 100644 --- a/board/ti/beagle/beagle.c +++ b/board/ti/beagle/beagle.c @@ -38,8 +38,6 @@ #include <asm/mach-types.h> #include "beagle.h" -static int beagle_revision_c; - /* * Routine: board_init * Description: Early hardware init. @@ -58,43 +56,41 @@ int board_init(void) } /* - * Routine: beagle_get_revision - * Description: Return the revision of the BeagleBoard this code is running on. - * If it is a revision Ax/Bx board, this function returns 0, - * on a revision C board you will get a 1. + * Routine: get_board_revision + * Description: Detect if we are running on a Beagle revision Ax/Bx, + * C1/2/3, C4 or xM. This can be done by reading + * the level of GPIO173, GPIO172 and GPIO171. This should + * result in + * GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx + * GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3 + * GPIO173, GPIO172, GPIO171: 1 0 1 => C4 + * GPIO173, GPIO172, GPIO171: 0 0 0 => xM */ -int beagle_get_revision(void) +int get_board_revision(void) { - return beagle_revision_c; -} + int revision; -/* - * Routine: beagle_identify - * Description: Detect if we are running on a Beagle revision Ax/Bx or - * Cx. This can be done by GPIO_171. If this is low, we are - * running on a revision C board. - */ -void beagle_identify(void) -{ - beagle_revision_c = 0; - if (!omap_request_gpio(171)) { - unsigned int val; + if (!omap_request_gpio(171) && + !omap_request_gpio(172) && + !omap_request_gpio(173)) { omap_set_gpio_direction(171, 1); - val = omap_get_gpio_datain(171); - omap_free_gpio(171); + omap_set_gpio_direction(172, 1); + omap_set_gpio_direction(173, 1); - if (val) - beagle_revision_c = 0; - else - beagle_revision_c = 1; + revision = omap_get_gpio_datain(173) << 2 | + omap_get_gpio_datain(172) << 1 | + omap_get_gpio_datain(171); + + omap_free_gpio(171); + omap_free_gpio(172); + omap_free_gpio(173); + } else { + printf("Error: unable to acquire board revision GPIOs\n"); + revision = -1; } - printf("Board revision "); - if (beagle_revision_c) - printf("C\n"); - else - printf("Ax/Bx\n"); + return revision; } /* @@ -106,6 +102,44 @@ int misc_init_r(void) struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE; struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE; + switch (get_board_revision()) { + case REVISION_AXBX: + printf("Beagle Rev Ax/Bx\n"); + setenv("beaglerev", "AxBx"); + setenv("mpurate", "600"); + break; + case REVISION_CX: + printf("Beagle Rev C1/C2/C3\n"); + setenv("beaglerev", "Cx"); + setenv("mpurate", "600"); + MUX_BEAGLE_C(); + break; + case REVISION_C4: + printf("Beagle Rev C4\n"); + setenv("beaglerev", "C4"); + setenv("mpurate", "720"); + MUX_BEAGLE_C(); + /* Set VAUX2 to 1.8V for EHCI PHY */ + twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, + TWL4030_PM_RECEIVER_VAUX2_VSEL_18, + TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, + TWL4030_PM_RECEIVER_DEV_GRP_P1); + break; + case REVISION_XM: + printf("Beagle xM Rev A\n"); + setenv("beaglerev", "xMA"); + setenv("mpurate", "1000"); + MUX_BEAGLE_XM(); + /* Set VAUX2 to 1.8V for EHCI PHY */ + twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, + TWL4030_PM_RECEIVER_VAUX2_VSEL_18, + TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, + TWL4030_PM_RECEIVER_DEV_GRP_P1); + break; + default: + printf("Beagle unknown 0x%02x\n", get_board_revision()); + } + twl4030_power_init(); twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON); @@ -120,8 +154,6 @@ int misc_init_r(void) writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout); - beagle_identify(); - dieid_num_r(); return 0; @@ -136,8 +168,4 @@ int misc_init_r(void) void set_muxconf_regs(void) { MUX_BEAGLE(); - - if (beagle_revision_c) { - MUX_BEAGLE_C(); - } } |