From: Stefan Agner <stefan.ag...@toradex.com>
Use the external PMIC Ricoh RN5T567 to reliably restart the system.
Signed-off-by: Stefan Agner <stefan.ag...@toradex.com>
---
board/toradex/colibri_imx7/colibri_imx7.c | 42 +++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/board/toradex/colibri_imx7/colibri_imx7.c
b/board/toradex/colibri_imx7/colibri_imx7.c
index bd7d5bc..c64e31e 100644
--- a/board/toradex/colibri_imx7/colibri_imx7.c
+++ b/board/toradex/colibri_imx7/colibri_imx7.c
@@ -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",
--
2.10.0
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