diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig
index 9d0eb91..2fcab60 100644
--- a/board/sunxi/Kconfig
+++ b/board/sunxi/Kconfig
@@ -132,6 +132,10 @@
 
 endif
 
+config SYS_CLK_FREQ
+	default 912000000 if MACH_SUN7I
+	default 1008000000 if MACH_SUN4I || MACH_SUN5I || MACH_SUN6I || MACH_SUN8I
+
 config SYS_CONFIG_NAME
 	default "sun4i" if MACH_SUN4I
 	default "sun5i" if MACH_SUN5I
diff --git a/board/sunxi/board.c b/board/sunxi/board.c
index e1891d1..808bf82 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -215,7 +215,7 @@
 	 * assured it's being powered with suitable core voltage
 	 */
 	if (!power_failed)
-		clock_set_pll1(CONFIG_CLK_FULL_SPEED);
+		clock_set_pll1(CONFIG_SYS_CLK_FREQ);
 	else
 		printf("Failed to set core voltage! Can't set CPU frequency\n");
 }