On 06/12/2013 12:54 PM, Dan Murphy wrote:
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
board/ti/panda/panda.c | 71 +++++++++++++++++++++++++++++++++++++--- include/configs/omap4_common.h | 2 + 2 files changed, 68 insertions(+), 5 deletions(-)
diff --git a/board/ti/panda/panda.c b/board/ti/panda/panda.c index 2bbe392..65a6e14 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 +71,66 @@ 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 */
- writew((IEN | M3), CONTROL_PADCONF_CORE + UNIPRO_TX0); /* gpio 171 */
- writew((IEN | M3), CONTROL_PADCONF_CORE + FREF_CLK2_OUT); /* gpio 182 */
- 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 */writew((IEN | M3), CONTROL_PADCONF_CORE + GPMC_A24); /* gpio 101 */writew((IEN | M3), CONTROL_PADCONF_CORE + UNIPRO_RY0); /* gpio 2 */writew((IEN | M3), CONTROL_PADCONF_CORE + UNIPRO_RX1); /* gpio 3 */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 */writew((IEN | M3), CONTROL_PADCONF_CORE + FREF_CLK2_OUT); /* gpio 101 */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 +147,7 @@ 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);
diff --git a/include/configs/omap4_common.h b/include/configs/omap4_common.h index d6448b0..cf41d9c 100644 --- a/include/configs/omap4_common.h +++ b/include/configs/omap4_common.h @@ -181,6 +181,8 @@ "setenv fdtfile omap4-sdp.dtb; fi; " \ "if test $board_name = panda; then " \ "setenv fdtfile omap4-panda.dtb; fi;" \
"if test $board_name = panda-a4; then " \"setenv fdtfile omap4-panda-a4.dtb; fi;" \
Tested on A3, A6 and ES B2.
Dan