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soc: npcx: npcx9: disable CCDEV_SEL in early initialization.

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Enabling CCDEV_SEL_EN may interfere with the expected behavior of
VCC1_RST#.
To prevent potential issues, this commit sets CCDEV_SEL_EN
to be disabled by default, ensuring reliable VCC1_RST# behavior.

Signed-off-by: Alvis Sun <yfsun@nuvoton.com>
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
This commit is contained in:
Alvis Sun 2025-05-16 09:31:23 +08:00 • committed by Benjamin Cabé
commit 9cf6d66062
2 changed files with 10 additions and 0 deletions
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7
soc/nuvoton/npcx/common/npcxn/include/reg_def.h
View file

@ -198,6 +198,13 @@ struct scfg_reg {
#define NPCX_JEN_CTL1_JEN_ENABLE 0x9
#define NPCX_JEN_CTL1_JEN_DISABLE 0x6
#define NPCX_JEN_CTL2_OFFSET 0x121
#define NPCX_JEN_CTL2(base) (*(volatile uint8_t *)(base + (NPCX_JEN_CTL2_OFFSET)))
#define NPCX_JEN_CTL2_CCDEV_SEL_EN FIELD(0, 4)
#define NPCX_JEN_CTL2_CCDEV_SEL_ENABLE 0x9
#define NPCX_JEN_CTL2_CCDEV_SEL_DISABLE 0x6
/* SCFG register fields */
#define NPCX_DEVCNT_F_SPI_TRIS 6
#define NPCX_DEVCNT_HIF_TYP_SEL_FIELD FIELD(2, 2)

3
soc/nuvoton/npcx/npcx9/soc.c
View file

@ -20,6 +20,9 @@ void soc_early_init_hook(void)
SET_FIELD(NPCX_JEN_CTL1(scfg_base), NPCX_JEN_CTL1_JEN_HEN,
NPCX_JEN_CTL1_JEN_DISABLE);
SET_FIELD(NPCX_JEN_CTL2(scfg_base), NPCX_JEN_CTL2_CCDEV_SEL_EN,
NPCX_JEN_CTL2_CCDEV_SEL_DISABLE);
}
scfg_init();
}