diff --git a/drivers/i3c/master/renesas-i3c.c b/drivers/i3c/master/renesas-i3c.c
index 676ba863661f..acfc38b18896 100644
--- a/drivers/i3c/master/renesas-i3c.c
+++ b/drivers/i3c/master/renesas-i3c.c
@@ -260,6 +260,7 @@ struct renesas_i3c {
 	u32 dyn_addr;
 	u32 i2c_STDBR;
 	u32 i3c_STDBR;
+	u32 extbr;
 	unsigned long rate;
 	u8 addrs[RENESAS_I3C_MAX_DEVS];
 	struct renesas_i3c_xferqueue xferqueue;
@@ -622,10 +623,9 @@ static int renesas_i3c_bus_init(struct i3c_master_controller *m)
 	renesas_writel(i3c->regs, STDBR, i3c->i3c_STDBR);
 
 	/* Extended Bit Rate setting */
-	renesas_writel(i3c->regs, EXTBR, EXTBR_EBRLO(od_low_ticks) |
-					   EXTBR_EBRHO(od_high_ticks) |
-					   EXTBR_EBRLP(pp_low_ticks) |
-					   EXTBR_EBRHP(pp_high_ticks));
+	i3c->extbr = EXTBR_EBRLO(od_low_ticks) | EXTBR_EBRHO(od_high_ticks) |
+		     EXTBR_EBRLP(pp_low_ticks) | EXTBR_EBRHP(pp_high_ticks);
+	renesas_writel(i3c->regs, EXTBR, i3c->extbr);
 
 	renesas_writel(i3c->regs, REFCKCTL, REFCKCTL_IREFCKS(cks));
 	i3c->refclk_div = cks;
@@ -1476,6 +1476,8 @@ static int renesas_i3c_resume_noirq(struct device *dev)
 		goto err_tresetn;
 
 	/* Re-store I3C registers value. */
+	renesas_writel(i3c->regs, STDBR, i3c->i3c_STDBR);
+	renesas_writel(i3c->regs, EXTBR, i3c->extbr);
 	renesas_writel(i3c->regs, REFCKCTL,
 		       REFCKCTL_IREFCKS(i3c->refclk_div));
 	renesas_writel(i3c->regs, MSDVAD, MSDVAD_MDYADV |