soc: npcx: workaround VCC1_RST hang issue for npcx9m7fb SoC

Apply the bypass for the issue "Possible Hang-Up After VCC1_RST Reset"
in the NPCX99nFB_Errata.

Signed-off-by: Jun Lin <CHLin56@nuvoton.com>

soc/nuvoton/npcx/common/reg/reg_def.h

@@ -240,6 +240,14 @@ struct scfg_reg {
 #define NPCX_LV_GPIO_CTL(base, n) \
 	(*(volatile uint8_t *)(base + NPCX_LV_GPIO_CTL_OFFSET(n)))
 
+#define NPCX_JEN_CTL1_OFFSET 0x120
+#define NPCX_JEN_CTL1(base) (*(volatile uint8_t *)(base + (NPCX_JEN_CTL1_OFFSET)))
+
+#define NPCX_JEN_CTL1_JEN_EN       FIELD(0, 4)
+#define NPCX_JEN_CTL1_JEN_HEN      FIELD(4, 4)
+#define NPCX_JEN_CTL1_JEN_ENABLE   0x9
+#define NPCX_JEN_CTL1_JEN_DISABLE  0x6
+
 /* SCFG register fields */
 #define NPCX_DEVCNT_F_SPI_TRIS                6
 #define NPCX_DEVCNT_HIF_TYP_SEL_FIELD         FIELD(2, 2)

soc/nuvoton/npcx/npcx9/CMakeLists.txt

@@ -5,4 +5,8 @@ zephyr_include_directories(
   ${ZEPHYR_BASE}/drivers
 )
 
+zephyr_sources(
+  soc.c
+)
+
 set(SOC_LINKER_SCRIPT ${ZEPHYR_BASE}/include/zephyr/arch/arm/cortex_m/scripts/linker.ld CACHE INTERNAL "")

soc/nuvoton/npcx/npcx9/Kconfig.soc

@@ -48,3 +48,11 @@ config SOC
 	default "npcx9m7f" if SOC_NPCX9M7F
 	default "npcx9m7fb" if SOC_NPCX9M7FB
 	default "npcx9mfp" if SOC_NPCX9MFP
+
+config NPCX_VCC1_RST_HANG_WORKAROUND
+	bool
+	depends on SOC_NPCX9M7FB
+	default y
+	help
+	  Workaround the issue "Possible Hang-Up After VCC1_RST Reset"
+	  in the npcx9m7fb SoC errata.

soc/nuvoton/npcx/npcx9/soc.c

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2024 Nuvoton Technology Corporation.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/kernel.h>
+#include <zephyr/device.h>
+#include <zephyr/init.h>
+#include <soc.h>
+#include <zephyr/logging/log.h>
+
+LOG_MODULE_REGISTER(soc, CONFIG_SOC_LOG_LEVEL);
+
+static int soc_npcx9_init(void)
+{
+	if (IS_ENABLED(CONFIG_NPCX_VCC1_RST_HANG_WORKAROUND)) {
+		uintptr_t scfg_base = DT_REG_ADDR_BY_NAME(DT_NODELABEL(scfg), scfg);
+
+		SET_FIELD(NPCX_JEN_CTL1(scfg_base), NPCX_JEN_CTL1_JEN_HEN,
+			  NPCX_JEN_CTL1_JEN_DISABLE);
+	}
+
+	return 0;
+}
+
+SYS_INIT(soc_npcx9_init, PRE_KERNEL_1, 0);