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mx6cuboxi: Differentiate Cubox-i and Hummingboard 

Introduce is_hummingboard() function that reads GPIOs that can distinguish
between Cubox-i and Hummingboard.

Print the board name accordingly.

Based on a patch from Rabeeh Khoury.

Signed-off-by: Rabeeh Khoury <rabeeh@solid-run.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Fabio Estevam 2015-04-25 18:47:19 -03:00 committed by Stefano Babic
parent 8cb6817e3a
commit feb6cc5cb3
1 changed files with 40 additions and 1 deletions
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39
board/solidrun/mx6cuboxi/mx6cuboxi.c
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@ -71,6 +71,12 @@ static iomux_v3_cfg_t const usdhc2_pads[] = {
IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
}; };
static iomux_v3_cfg_t const hb_cbi_sense[] = {
/* These pins are for sensing if it is a CuBox-i or a HummingBoard */
IOMUX_PADS(PAD_KEY_ROW1__GPIO4_IO09 | MUX_PAD_CTRL(UART_PAD_CTRL)),
IOMUX_PADS(PAD_EIM_DA4__GPIO3_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)),
};
static void setup_iomux_uart(void) static void setup_iomux_uart(void)
{ {
SETUP_IOMUX_PADS(uart1_pads); SETUP_IOMUX_PADS(uart1_pads);
@ -167,9 +173,42 @@ int board_init(void)
return 0; return 0;
} }
static bool is_hummingboard(void)
{
int val1, val2;
SETUP_IOMUX_PADS(hb_cbi_sense);
gpio_direction_input(IMX_GPIO_NR(4, 9));
gpio_direction_input(IMX_GPIO_NR(3, 4));
val1 = gpio_get_value(IMX_GPIO_NR(4, 9));
val2 = gpio_get_value(IMX_GPIO_NR(3, 4));
/*
* Machine selection -
* Machine val1, val2
* -------------------------
* HB rev 3.x x 0
* CBi 0 1
* HB 1 1
*/
if (val2 == 0)
return true;
else if (val1 == 0)
return false;
else
return true;
}
int checkboard(void) int checkboard(void)
{ {
if (is_hummingboard())
puts("Board: MX6 Hummingboard\n"); puts("Board: MX6 Hummingboard\n");
else
puts("Board: MX6 Cubox-i\n");
return 0; return 0;
} }