diff --git a/chip/npcx/lpc.c b/chip/npcx/lpc.c
index 7770609c1b..556276dbc8 100644
--- a/chip/npcx/lpc.c
+++ b/chip/npcx/lpc.c
@@ -368,8 +368,6 @@ uint8_t lpc_sib_read_kbc_reg(uint8_t io_offset)
 
 	/* Lock host keyboard module */
 	SET_BIT(NPCX_LKSIOHA, NPCX_LKSIOHA_LKHIKBD);
-	/* Enable Core-to-Host Modules Access */
-	SET_BIT(NPCX_SIBCTRL, NPCX_SIBCTRL_CSAE);
 	/* Verify Core read/write to host modules is not in progress */
 	lpc_sib_wait_host_read_done();
 	lpc_sib_wait_host_write_done();
@@ -388,8 +386,6 @@ uint8_t lpc_sib_read_kbc_reg(uint8_t io_offset)
 
 	/* Disable Core access to keyboard module */
 	CLEAR_BIT(NPCX_CRSMAE, NPCX_CRSMAE_HIKBDAE);
-	/* Disable Core-to-Host Modules Access */
-	CLEAR_BIT(NPCX_SIBCTRL, NPCX_SIBCTRL_CSAE);
 	/* unlock host keyboard module */
 	CLEAR_BIT(NPCX_LKSIOHA, NPCX_LKSIOHA_LKHIKBD);
 
@@ -724,8 +720,6 @@ void lpc_sib_write_reg(uint8_t io_offset, uint8_t index_value,
 
 	/* Lock host CFG module */
 	SET_BIT(NPCX_LKSIOHA, NPCX_LKSIOHA_LKCFG);
-	/* Enable Core-to-Host Modules Access */
-	SET_BIT(NPCX_SIBCTRL, NPCX_SIBCTRL_CSAE);
 	/* Enable Core access to CFG module */
 	SET_BIT(NPCX_CRSMAE, NPCX_CRSMAE_CFGAE);
 	/* Verify Core read/write to host modules is not in progress */
@@ -748,8 +742,6 @@ void lpc_sib_write_reg(uint8_t io_offset, uint8_t index_value,
 
 	/* Disable Core access to CFG module */
 	CLEAR_BIT(NPCX_CRSMAE, NPCX_CRSMAE_CFGAE);
-	/* Disable Core-to-Host Modules Access */
-	CLEAR_BIT(NPCX_SIBCTRL, NPCX_SIBCTRL_CSAE);
 	/* unlock host CFG  module */
 	CLEAR_BIT(NPCX_LKSIOHA, NPCX_LKSIOHA_LKCFG);
 
@@ -766,8 +758,6 @@ uint8_t lpc_sib_read_reg(uint8_t io_offset, uint8_t index_value)
 
 	/* Lock host CFG module */
 	SET_BIT(NPCX_LKSIOHA, NPCX_LKSIOHA_LKCFG);
-	/* Enable Core-to-Host Modules Access */
-	SET_BIT(NPCX_SIBCTRL, NPCX_SIBCTRL_CSAE);
 	/* Enable Core access to CFG module */
 	SET_BIT(NPCX_CRSMAE, NPCX_CRSMAE_CFGAE);
 	/* Verify Core read/write to host modules is not in progress */
@@ -792,8 +782,6 @@ uint8_t lpc_sib_read_reg(uint8_t io_offset, uint8_t index_value)
 
 	/* Disable Core access to CFG module */
 	CLEAR_BIT(NPCX_CRSMAE, NPCX_CRSMAE_CFGAE);
-	/* Disable Core-to-Host Modules Access */
-	CLEAR_BIT(NPCX_SIBCTRL, NPCX_SIBCTRL_CSAE);
 	/* unlock host CFG  module */
 	CLEAR_BIT(NPCX_LKSIOHA, NPCX_LKSIOHA_LKCFG);
 
@@ -806,6 +794,9 @@ uint8_t lpc_sib_read_reg(uint8_t io_offset, uint8_t index_value)
 /* For LPC host register initial via SIB module */
 void host_register_init(void)
 {
+	/* Enable Core-to-Host Modules Access */
+	SET_BIT(NPCX_SIBCTRL, NPCX_SIBCTRL_CSAE);
+
 	/* enable ACPI*/
 	lpc_sib_write_reg(SIO_OFFSET, 0x07, 0x11);
 	lpc_sib_write_reg(SIO_OFFSET, 0x30, 0x01);