diff --git a/drivers/clk/renesas/r8a7795-cpg-mssr.c b/drivers/clk/renesas/r8a7795-cpg-mssr.c
index 119c02440726..86842c9fd314 100644
--- a/drivers/clk/renesas/r8a7795-cpg-mssr.c
+++ b/drivers/clk/renesas/r8a7795-cpg-mssr.c
@@ -104,6 +104,7 @@ static struct cpg_core_clk r8a7795_core_clks[] __initdata = {
 	DEF_FIXED("cl",         R8A7795_CLK_CL,    CLK_PLL1_DIV2, 48, 1),
 	DEF_FIXED("cr",         R8A7795_CLK_CR,    CLK_PLL1_DIV4,  2, 1),
 	DEF_FIXED("cp",         R8A7795_CLK_CP,    CLK_EXTAL,      2, 1),
+	DEF_FIXED("cpex",       R8A7795_CLK_CPEX,  CLK_EXTAL,      2, 1),
 
 	DEF_DIV6P1("canfd",     R8A7795_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
 	DEF_DIV6P1("csi0",      R8A7795_CLK_CSI0,  CLK_PLL1_DIV4, 0x00c),