warp7: Fix watchdog reset
The latest version of warp7 board provides the connection of the
WDOG1_B pin to the PMIC.
Program the watchdog to enable the WDOG1_B output which causes
a POR reset.
Based on the imx7dsabresd code.
Signed-off-by: Marco Franchi <marco.franchi@nxp.com>
Acked-by: Fabio Estevam <fabio.estevam@nxp.com>
diff --git a/board/warp7/warp7.c b/board/warp7/warp7.c
index 8c5bf9a..27e31f3 100644
--- a/board/warp7/warp7.c
+++ b/board/warp7/warp7.c
@@ -32,6 +32,10 @@
return 0;
}
+static iomux_v3_cfg_t const wdog_pads[] = {
+ MX7D_PAD_GPIO1_IO00__WDOG1_WDOG_B | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
static iomux_v3_cfg_t const uart1_pads[] = {
MX7D_PAD_UART1_TX_DATA__UART1_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
MX7D_PAD_UART1_RX_DATA__UART1_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
@@ -100,3 +104,20 @@
{
return USB_INIT_DEVICE;
}
+
+int board_late_init(void)
+{
+ struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
+
+ imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
+
+ set_wdog_reset(wdog);
+
+ /*
+ * Do not assert internal WDOG_RESET_B_DEB(controlled by bit 4),
+ * since we use PMIC_PWRON to reset the board.
+ */
+ clrsetbits_le16(&wdog->wcr, 0, 0x10);
+
+ return 0;
+}