diff options
author | Dan Murphy <dmurphy@ti.com> | 2013-06-13 11:21:13 -0500 |
---|---|---|
committer | Tom Rini <trini@ti.com> | 2013-06-18 10:43:30 -0400 |
commit | 7d47d1caa01682fd7b12631409927139f09ba041 (patch) | |
tree | a1e22b7e98f7571a31c68d1391b1dce03cfa9899 /board/ti/panda/panda.c | |
parent | 45dbbf29bb58934d7c75b38429927b058ff69f9c (diff) |
arm: omap4: panda: Add reading of the board revision
Detect if we are running on a panda revision A1-A6,
or an ES panda board. This can be done by reading
the level of GPIOs and checking the processor revisions.
This should result in:
Panda 4430:
GPIO171, GPIO101, GPIO182: 0 1 1 => A1-A5
GPIO171, GPIO101, GPIO182: 1 0 1 => A6
Panda ES:
GPIO2, GPIO3, GPIO171, GPIO48, GPIO182: 0 0 0 1 1 => B1/B2
GPIO2, GPIO3, GPIO171, GPIO48, GPIO182: 0 0 1 1 1 => B3
Set the board name appropriately for the board revision that
is detected.
Update the findfdt macro to load the a4 device tree binary.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
[trini: %s/CONTROL_PADCONF_CORE/(*ctrl)->control_padconf_core_base/ and
formatting for that]
Signed-off-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'board/ti/panda/panda.c')
-rw-r--r-- | board/ti/panda/panda.c | 78 |
1 files changed, 73 insertions, 5 deletions
diff --git a/board/ti/panda/panda.c b/board/ti/panda/panda.c index 90ae29e7c6..84c863d901 100644 --- a/board/ti/panda/panda.c +++ b/board/ti/panda/panda.c @@ -37,6 +37,11 @@ #endif #define PANDA_ULPI_PHY_TYPE_GPIO 182 +#define PANDA_BOARD_ID_1_GPIO 101 +#define PANDA_ES_BOARD_ID_1_GPIO 48 +#define PANDA_BOARD_ID_2_GPIO 171 +#define PANDA_ES_BOARD_ID_3_GPIO 3 +#define PANDA_ES_BOARD_ID_4_GPIO 2 DECLARE_GLOBAL_DATA_PTR; @@ -66,6 +71,73 @@ int board_eth_init(bd_t *bis) return 0; } +/* +* Routine: get_board_revision +* Description: Detect if we are running on a panda revision A1-A6, +* or an ES panda board. This can be done by reading +* the level of GPIOs and checking the processor revisions. +* This should result in: +* Panda 4430: +* GPIO171, GPIO101, GPIO182: 0 1 1 => A1-A5 +* GPIO171, GPIO101, GPIO182: 1 0 1 => A6 +* Panda ES: +* GPIO2, GPIO3, GPIO171, GPIO48, GPIO182: 0 0 0 1 1 => B1/B2 +* GPIO2, GPIO3, GPIO171, GPIO48, GPIO182: 0 0 1 1 1 => B3 +*/ +int get_board_revision(void) +{ + int board_id0, board_id1, board_id2; + int board_id3, board_id4; + int board_id; + + int processor_rev = omap_revision(); + + /* Setup the mux for the common board ID pins (gpio 171 and 182) */ + writew((IEN | M3), (*ctrl)->control_padconf_core_base + UNIPRO_TX0); + writew((IEN | M3), (*ctrl)->control_padconf_core_base + FREF_CLK2_OUT); + + board_id0 = gpio_get_value(PANDA_ULPI_PHY_TYPE_GPIO); + board_id2 = gpio_get_value(PANDA_BOARD_ID_2_GPIO); + + if ((processor_rev >= OMAP4460_ES1_0 && + processor_rev <= OMAP4460_ES1_1)) { + /* + * Setup the mux for the ES specific board ID pins (gpio 101, + * 2 and 3. + */ + writew((IEN | M3), (*ctrl)->control_padconf_core_base + + GPMC_A24); + writew((IEN | M3), (*ctrl)->control_padconf_core_base + + UNIPRO_RY0); + writew((IEN | M3), (*ctrl)->control_padconf_core_base + + UNIPRO_RX1); + + board_id1 = gpio_get_value(PANDA_ES_BOARD_ID_1_GPIO); + board_id3 = gpio_get_value(PANDA_ES_BOARD_ID_3_GPIO); + board_id4 = gpio_get_value(PANDA_ES_BOARD_ID_4_GPIO); + +#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG + setenv("board_name", strcat(CONFIG_SYS_BOARD, "-es")); +#endif + board_id = ((board_id4 << 4) | (board_id3 << 3) | + (board_id2 << 2) | (board_id1 << 1) | (board_id0)); + } else { + /* Setup the mux for the Ax specific board ID pins (gpio 101) */ + writew((IEN | M3), (*ctrl)->control_padconf_core_base + + FREF_CLK2_OUT); + + board_id1 = gpio_get_value(PANDA_BOARD_ID_1_GPIO); + board_id = ((board_id2 << 2) | (board_id1 << 1) | (board_id0)); + +#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG + if ((board_id >= 0x3) && (processor_rev == OMAP4430_ES2_3)) + setenv("board_name", strcat(CONFIG_SYS_BOARD, "-a4")); +#endif + } + + return board_id; +} + /** * @brief misc_init_r - Configure Panda board specific configurations * such as power configurations, ethernet initialization as phase2 of @@ -82,11 +154,7 @@ int misc_init_r(void) if (omap_revision() == OMAP4430_ES1_0) return 0; -#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG - if (omap_revision() >= OMAP4460_ES1_0 || - omap_revision() <= OMAP4460_ES1_1) - setenv("board_name", strcat(CONFIG_SYS_BOARD, "-es")); -#endif + get_board_revision(); gpio_direction_input(PANDA_ULPI_PHY_TYPE_GPIO); phy_type = gpio_get_value(PANDA_ULPI_PHY_TYPE_GPIO); |