diff --git a/drivers/i2c/busses/i2c-uniphier.c b/drivers/i2c/busses/i2c-uniphier.c
index 454f914ae66dbd49931575122bb7c7dea662b11b..c488e558aef709ee5097f05436624807df26ac4e 100644
--- a/drivers/i2c/busses/i2c-uniphier.c
+++ b/drivers/i2c/busses/i2c-uniphier.c
@@ -320,7 +320,13 @@ static void uniphier_i2c_hw_init(struct uniphier_i2c_priv *priv)
 
 	uniphier_i2c_reset(priv, true);
 
-	writel((cyc / 2 << 16) | cyc, priv->membase + UNIPHIER_I2C_CLK);
+	/*
+	 * Bit30-16: clock cycles of tLOW.
+	 *  Standard-mode: tLOW = 4.7 us, tHIGH = 4.0 us
+	 *  Fast-mode:     tLOW = 1.3 us, tHIGH = 0.6 us
+	 * "tLow/tHIGH = 5/4" meets both.
+	 */
+	writel((cyc * 5 / 9 << 16) | cyc, priv->membase + UNIPHIER_I2C_CLK);
 
 	uniphier_i2c_reset(priv, false);
 }