arm64: dts: rockchip: assign clock rate for ACLK_VIO on rk3399

The ACLK_VIO is a parent clock used by a several children,
its suggested clock rate is 400MHz. Right now it gets 400MHz
because it sources from CPLL(800M) and divides by 2 after reset.
It's good not to rely on default values like this, so let's
explicitly set it.
NOTE: it's expected that at least one board may override cru node and
set the CPLL to 1.6 GHz. On that board it will be very important to be
explicit about aclk-vio being 400 MHz.

Signed-off-by: Shunqian Zheng <zhengsq@rock-chips.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
index 6e50768..300f11d 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
@@ -586,7 +586,8 @@
                <&cru PCLK_PERIHP>,
                <&cru ACLK_PERILP0>, <&cru HCLK_PERILP0>,
                <&cru PCLK_PERILP0>, <&cru ACLK_CCI>,
-               <&cru HCLK_PERILP1>, <&cru PCLK_PERILP1>;
+               <&cru HCLK_PERILP1>, <&cru PCLK_PERILP1>,
+               <&cru ACLK_VIO>;
        assigned-clock-rates =
                <600000000>, <800000000>,
                <1000000000>,
@@ -594,7 +595,8 @@
                <37500000>,
                <100000000>, <100000000>,
                <50000000>, <800000000>,
-               <100000000>, <50000000>;
+               <100000000>, <50000000>,
+               <400000000>;
 };
 
 &emmc_phy {

diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index 65a42ee..a8340d9 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -1322,7 +1322,8 @@
                        <&cru PCLK_PERIHP>,
                        <&cru ACLK_PERILP0>, <&cru HCLK_PERILP0>,
                        <&cru PCLK_PERILP0>, <&cru ACLK_CCI>,
-                       <&cru HCLK_PERILP1>, <&cru PCLK_PERILP1>;
+                       <&cru HCLK_PERILP1>, <&cru PCLK_PERILP1>,
+                       <&cru ACLK_VIO>;
                assigned-clock-rates =
                         <594000000>,  <800000000>,
                        <1000000000>,
@@ -1330,7 +1331,8 @@
                          <37500000>,
                         <100000000>,  <100000000>,
                          <50000000>, <600000000>,
-                        <100000000>,   <50000000>;
+                        <100000000>,   <50000000>,
+                        <400000000>;
        };
 
        grf: syscon@ff770000 {