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colibri_imx7: use Ricoh RN5T567 to reboot the board

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Use the external PMIC Ricoh RN5T567 to reliably restart the system.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
This commit is contained in:
Stefan Agner 2016-10-05 15:27:11 -07:00 committed by Stefano Babic
parent cced7e5bb5
commit 02ad90eca5
1 changed files with 42 additions and 0 deletions
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42
board/toradex/colibri_imx7/colibri_imx7.c
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@ -21,6 +21,8 @@
#include <mmc.h>
#include <miiphy.h>
#include <netdev.h>
#include <power/pmic.h>
#include <power/rn5t567_pmic.h>
#include <usb/ehci-ci.h>
DECLARE_GLOBAL_DATA_PTR;
@ -337,6 +339,46 @@ int board_late_init(void)
return 0;
}
#ifdef CONFIG_DM_PMIC
int power_init_board(void)
{
struct udevice *dev;
int reg, ver;
int ret;
ret = pmic_get("rn5t567", &dev);
if (ret)
return ret;
ver = pmic_reg_read(dev, RN5T567_LSIVER);
reg = pmic_reg_read(dev, RN5T567_OTPVER);
printf("PMIC: RN5T567 LSIVER=0x%02x OTPVER=0x%02x\n", ver, reg);
/* set judge and press timer of N_OE to minimal values */
pmic_clrsetbits(dev, RN5T567_NOETIMSETCNT, 0x7, 0);
return 0;
}
void reset_cpu(ulong addr)
{
struct udevice *dev;
pmic_get("rn5t567", &dev);
/* Use PMIC to reset, set REPWRTIM to 0 and REPWRON to 1 */
pmic_reg_write(dev, RN5T567_REPCNT, 0x1);
pmic_reg_write(dev, RN5T567_SLPCNT, 0x1);
/*
* Re-power factor detection on PMIC side is not instant. 1ms
* proved to be enough time until reset takes effect.
*/
mdelay(1);
}
#endif
int checkboard(void)
{
printf("Model: Toradex Colibri iMX7%c\n",