driver: clk: Add support for clocks on Armada 37xx
The drivers are based on Linux driver by Gregory Clement.
The TBG clocks support only the .get_rate method.
- since setting rate is not supported, the driver computes the rates
when probing and so subsequent calls to the .get_rate method do not
read the corresponding registers again
The peripheral clocks support methods .get_rate, .enable and .disable.
- the .set_parent method theoretically could be supported on some clocks
(the parent would have to be one of the TBG clocks)
- the .set_rate method would have to try all the divider values to find
the best approximation of a given rate, and it doesn't seem like
this should be needed in U-Boot, therefore not implemented
Signed-off-by: Marek Behun <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/dts/armada-37xx.dtsi b/arch/arm/dts/armada-37xx.dtsi
index 040e856..c72fd25 100644
--- a/arch/arm/dts/armada-37xx.dtsi
+++ b/arch/arm/dts/armada-37xx.dtsi
@@ -107,6 +107,26 @@
status = "disabled";
};
+ nb_periph_clk: nb-periph-clk@13000 {
+ compatible = "marvell,armada-3700-periph-clock-nb";
+ reg = <0x13000 0x100>;
+ clocks = <&tbg 0>, <&tbg 1>, <&tbg 2>, <&tbg 3>;
+ #clock-cells = <1>;
+ };
+
+ sb_periph_clk: sb-periph-clk@18000 {
+ compatible = "marvell,armada-3700-periph-clock-sb";
+ reg = <0x18000 0x100>;
+ clocks = <&tbg 0>, <&tbg 1>, <&tbg 2>, <&tbg 3>;
+ #clock-cells = <1>;
+ };
+
+ tbg: tbg@13200 {
+ compatible = "marvell,armada-3700-tbg-clock";
+ reg = <0x13200 0x100>;
+ #clock-cells = <1>;
+ };
+
pinctrl_nb: pinctrl-nb@13800 {
compatible = "marvell,armada3710-nb-pinctrl",
"syscon", "simple-mfd";