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warp7: Fix watchdog reset

PATCH New Marco Franchi 3 participants 3 messages Jun 10, 2016 – Jun 18, 2016

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Marco Franchi

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#0 lore raw

PATCH 1/1 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 <[email protected]>
---
 board/warp7/warp7.c     | 21 +++++++++++++++++++++
 include/configs/warp7.h |  1 +
 2 files changed, 22 insertions(+)
board/warp7/warp7.c +21 -0
index 8c5bf9a..27e31f3 100644
@@ -32,6 +32,10 @@ int dram_init(void)
 	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 @@ int board_usb_phy_mode(int port)
 {
 	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;
+}
include/configs/warp7.h +1 -0
index b57065b..3d0b6dd 100644
@@ -20,6 +20,7 @@
 #define CONFIG_SYS_MALLOC_LEN		(35 * SZ_1M)
 
 #define CONFIG_BOARD_EARLY_INIT_F
+#define CONFIG_BOARD_LATE_INIT
 
 /* MMC Config*/
 #define CONFIG_SYS_FSL_ESDHC_ADDR       USDHC3_BASE_ADDR
Signature · 1 line
2.7.4
Applied
#2 lore raw

PATCH 1/1 warp7: Fix watchdog reset

In reply to Marco Franchi
Quoted 10 lines · Marco Franchi

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 <[email protected]>

---

Applied to master (bug fix), thanks !

Best regards,
Stefano Babic

Signature · 5 lines
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