GitHub-Mirror/u-boot
2
0
Fork 0
mirror of https://github.com/Fishwaldo/u-boot.git synced 2025-03-21 14:41:31 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

ARMV7: OMAP: Add board revision detection for Overo

Browse source 
The latest Overo COM modules encode their revision number on
GPIOs 115, 113, and 112.  All boards to date have no pullups on these pins
and hence appear as revision 0.

This patch reads and prints the revision information.

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
This commit is contained in:
Steve Sakoman 2010-08-12 15:13:02 -07:00 • committed by Sandeep Paulraj
parent 5af3246034
commit c2d5b34120
2 changed files with 35 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

32
board/overo/overo.c
View file

@ -60,6 +60,37 @@ int board_init(void)
return 0;
}
/*
* Routine: get_board_revision
* Description: Returns the board revision
*/
int get_board_revision(void)
{
int revision;
if (!omap_request_gpio(112) &&
!omap_request_gpio(113) &&
!omap_request_gpio(115)) {
omap_set_gpio_direction(112, 1);
omap_set_gpio_direction(113, 1);
omap_set_gpio_direction(115, 1);
revision = omap_get_gpio_datain(115) << 2 |
omap_get_gpio_datain(113) << 1 |
omap_get_gpio_datain(112);
omap_free_gpio(112);
omap_free_gpio(113);
omap_free_gpio(115);
} else {
printf("Error: unable to acquire board revision GPIOs\n");
revision = -1;
}
return revision;
}
/*
* Routine: misc_init_r
* Description: Configure board specific parts
@ -73,6 +104,7 @@ int misc_init_r(void)
setup_net_chip();
#endif
printf("Board revision: %d\n", get_board_revision());
dieid_num_r();
return 0;

6
board/overo/overo.h
View file

@ -189,11 +189,11 @@ const omap3_sysinfo sysinfo = {
MUX_VAL(CP(CAM_XCLKB), (IDIS | PTD | DIS | M0)) /*CAM_XCLKB*/\
MUX_VAL(CP(CAM_WEN), (IEN | PTD | DIS | M0)) /*CAM_WEN*/\
MUX_VAL(CP(CAM_STROBE), (IDIS | PTD | DIS | M0)) /*CAM_STROBE*/\
MUX_VAL(CP(CSI2_DX0), (IEN | PTD | DIS | M0)) /*CSI2_DX0*/\
MUX_VAL(CP(CSI2_DY0), (IEN | PTD | DIS | M0)) /*CSI2_DY0*/\
MUX_VAL(CP(CSI2_DX0), (IEN | PTD | EN | M4)) /*GPIO_112*/\
MUX_VAL(CP(CSI2_DY0), (IEN | PTD | EN | M4)) /*GPIO_113*/\
MUX_VAL(CP(CSI2_DX1), (IEN | PTD | EN | M4)) /*GPIO_114*/\
/* - PEN_DOWN*/\
MUX_VAL(CP(CSI2_DY1), (IEN | PTU | EN | M4)) /*GPIO_115*/\
MUX_VAL(CP(CSI2_DY1), (IEN | PTD | EN | M4)) /*GPIO_115*/\
/*Audio Interface */\
MUX_VAL(CP(MCBSP2_FSX), (IEN | PTD | DIS | M0)) /*McBSP2_FSX*/\
MUX_VAL(CP(MCBSP2_CLKX), (IEN | PTD | DIS | M0)) /*McBSP2_CLKX*/\