This adds a new binding for the PLL IP blocks in the mach-davinci family
of processors. Currently, only the SYSCLKn and AUXCLK outputs are needed,
but in the future additional child nodes could be added for OBSCLK and
BPDIV.
Note: Although these PLL controllers are very similar to the TI Keystone
SoCs, we are not re-using those bindings. The Keystone bindings use a
legacy one-node-per-clock binding. Furthermore, the mach-davinici SoCs
have a slightly different PLL register layout and a number of quirks that
can't be handled by the existing bindings, so the keystone bindings could
not be used as-is anyway.
Signed-off-by: David Lechner <da...@lechnology.com>
---
.../devicetree/bindings/clock/ti/davinci/pll.txt | 47 ++++++++++++++++++++++
1 file changed, 47 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/ti/davinci/pll.txt
diff --git a/Documentation/devicetree/bindings/clock/ti/davinci/pll.txt
b/Documentation/devicetree/bindings/clock/ti/davinci/pll.txt
new file mode 100644
index 0000000..99bf5da
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/ti/davinci/pll.txt
@@ -0,0 +1,47 @@
+Binding for TI DaVinci PLL Controllers
+
+The PLL provides clocks to most of the components on the SoC. In addition
+to the PLL itself, this controller also contains bypasses, gates, dividers,
+an multiplexers for various clock signals.
+
+Required properties:
+- compatible: shall be one of:
+ - "ti,da850-pll0" for PLL0 on DA850/OMAP-L138/AM18XX
+ - "ti,da850-pll1" for PLL1 on DA850/OMAP-L138/AM18XX
+- reg: physical base address and size of the controller's register area.
+- clocks: phandle to the PLL input clock source
+
+Optional child nodes:
+
+sysclk
+ Describes the PLLDIVn divider clocks that provide the SYSCLKn clock
+ domains. The node name must be "sysclk". Consumers of this node should
+ use "n" in "SYSCLKn" as the parameter for the clock cell.
+
+ Required properties:
+ - #clock-cells: must be 1
+
+auxclk
+ Describes the AUXCLK output of the PLL. The node name must be "auxclk".
+
+ Required properties:
+ - #clock-cells: must be 0
+
+Examples:
+
+ pll0: clock-controller@11000 {
+ compatible = "ti,da850-pll0";
+ reg = <0x11000 0x1000>;
+ clocks = <&ref_clk>;
+
+ pll0_sysclk: sysclk {
+ #clock-cells = <1>;
+ };
+
+ pll0_aux_clk: auxclk {
+ #clock-cells = <0>;
+ };
+ };
+
+Also see:
+- Documentation/devicetree/bindings/clock/clock-bindings.txt
--
2.7.4
