--- rk3399-pinebook-pro.dts.original	2021-03-19 09:42:31.346303000 +0100
+++ rk3399-pinebook-pro.dts	2021-02-03 14:27:05.219896000 +0100
@@ -917,6 +917,31 @@
 	};
 };
 
+&cru{ 
+	 assigned-clocks =
+		<&cru PLL_GPLL>, <&cru PLL_CPLL>,
+		<&cru PLL_NPLL>,
+		<&cru ACLK_PERIHP>, <&cru HCLK_PERIHP>,
+		<&cru PCLK_PERIHP>,
+		<&cru ACLK_PERILP0>, <&cru HCLK_PERILP0>,
+		<&cru PCLK_PERILP0>, <&cru ACLK_CCI>,
+		<&cru HCLK_PERILP1>, <&cru PCLK_PERILP1>,
+		<&cru ACLK_VIO>, <&cru ACLK_HDCP>,
+		<&cru ACLK_GIC_PRE>,
+		<&cru PCLK_DDR>,<&cru ACLK_VOP1>;
+	assigned-clock-rates=
+		<594000000>, <800000000>,
+		<1000000000>,
+		<150000000>, <75000000>,
+	 	<37500000>,
+	 	<100000000>, <100000000>,
+	 	<50000000>, <600000000>,
+	 	<100000000>, <50000000>,
+	 	<400000000>, <400000000>,
+	 	<200000000>,
+	 	<200000000>, <594000000>;
+};
+
 &pmu_io_domains {
 	pmu1830-supply = <&vcc_3v0>;
 	status = "okay";
@@ -939,6 +964,7 @@
 	bus-width = <4>;
 	cap-mmc-highspeed;
 	cap-sd-highspeed;
+	max-frequency = <25000000>;
 	cd-gpios = <&gpio0 RK_PA7 GPIO_ACTIVE_LOW>;
 	disable-wp;
 	pinctrl-names = "default";