[v8,17/42] dt-bindings: clock: Add bindings for DA8XX CFGCHIP clocks

Commit Message

David Lechner March 16, 2018, 2:52 a.m. UTC

This adds a new binding for the clocks present in the CFGCHIP syscon
registers in TI DA8XX SoCs.

Signed-off-by: David Lechner <[e-mail]>
Reviewed-by: Rob Herring <[e-mail]>
---

v8 changes:
- none

v7 changes:
- none

v6 changes:
- combine "dt-bindings: clock: Add bindings for DA8XX CFGCHIP gate clocks",
  "dt-bindings: clock: Add binding for TI DA8XX CFGCHIP mux clocks" and
  "dt-bindings: clock: Add bindings for TI DA8XX USB PHY clocks" into a single
  file containing all CFGCHIP clocks bindings
- added compatible = "ti,da830-div4p5ena"
- added compatible = "ti,da850-async1-clksrc"
- renamed other compatible strings
- changed and added some clk-names strings
- USB PHY clocks are combined into a single node with #clock-cells = <1>

 .../bindings/clock/ti/davinci/da8xx-cfgchip.txt    | 93 ++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/ti/davinci/da8xx-cfgchip.txt

Comments

Stephen Boyd March 20, 2018, 5:04 p.m. UTC | #1

Quoting David Lechner (2018-03-15 19:52:33)
> This adds a new binding for the clocks present in the CFGCHIP syscon
> registers in TI DA8XX SoCs.
> 
> Signed-off-by: David Lechner <[e-mail]>
> Reviewed-by: Rob Herring <[e-mail]>
> ---

Applied to clk-next

Patch

diff --git a/Documentation/devicetree/bindings/clock/ti/davinci/da8xx-cfgchip.txt b/Documentation/devicetree/bindings/clock/ti/davinci/da8xx-cfgchip.txt
new file mode 100644
index 0000000..1e03dce
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/ti/davinci/da8xx-cfgchip.txt
@@ -0,0 +1,93 @@ 
+Binding for TI DA8XX/OMAP-L13X/AM17XX/AM18XX CFGCHIP clocks
+
+TI DA8XX/OMAP-L13X/AM17XX/AM18XX SoCs contain a general purpose set of
+registers call CFGCHIPn. Some of these registers function as clock
+gates. This document describes the bindings for those clocks.
+
+All of the clock nodes described below must be child nodes of a CFGCHIP node
+(compatible = "ti,da830-cfgchip").
+
+USB PHY clocks
+--------------
+Required properties:
+- compatible: shall be "ti,da830-usb-phy-clocks".
+- #clock-cells: from common clock binding; shall be set to 1.
+- clocks: phandles to the parent clocks corresponding to clock-names
+- clock-names: shall be "fck", "usb_refclkin", "auxclk"
+
+This node provides two clocks. The clock at index 0 is the USB 2.0 PHY 48MHz
+clock and the clock at index 1 is the USB 1.1 PHY 48MHz clock.
+
+eHRPWM Time Base Clock (TBCLK)
+------------------------------
+Required properties:
+- compatible: shall be "ti,da830-tbclksync".
+- #clock-cells: from common clock binding; shall be set to 0.
+- clocks: phandle to the parent clock
+- clock-names: shall be "fck"
+
+PLL DIV4.5 divider
+------------------
+Required properties:
+- compatible: shall be "ti,da830-div4p5ena".
+- #clock-cells: from common clock binding; shall be set to 0.
+- clocks: phandle to the parent clock
+- clock-names: shall be "pll0_pllout"
+
+EMIFA clock source (ASYNC1)
+---------------------------
+Required properties:
+- compatible: shall be "ti,da850-async1-clksrc".
+- #clock-cells: from common clock binding; shall be set to 0.
+- clocks: phandles to the parent clocks corresponding to clock-names
+- clock-names: shall be "pll0_sysclk3", "div4.5"
+
+ASYNC3 clock source
+-------------------
+Required properties:
+- compatible: shall be "ti,da850-async3-clksrc".
+- #clock-cells: from common clock binding; shall be set to 0.
+- clocks: phandles to the parent clocks corresponding to clock-names
+- clock-names: shall be "pll0_sysclk2", "pll1_sysclk2"
+
+Examples:
+
+	cfgchip: syscon@1417c {
+		compatible = "ti,da830-cfgchip", "syscon", "simple-mfd";
+		reg = <0x1417c 0x14>;
+
+		usb_phy_clk: usb-phy-clocks {
+			compatible = "ti,da830-usb-phy-clocks";
+			#clock-cells = <1>;
+			clocks = <&psc1 1>, <&usb_refclkin>, <&pll0_auxclk>;
+			clock-names = "fck", "usb_refclkin", "auxclk";
+		};
+		ehrpwm_tbclk: ehrpwm_tbclk {
+			compatible = "ti,da830-tbclksync";
+			#clock-cells = <0>;
+			clocks = <&psc1 17>;
+			clock-names = "fck";
+		};
+		div4p5_clk: div4.5 {
+			compatible = "ti,da830-div4p5ena";
+			#clock-cells = <0>;
+			clocks = <&pll0_pllout>;
+			clock-names = "pll0_pllout";
+		};
+		async1_clk: async1 {
+			compatible = "ti,da850-async1-clksrc";
+			#clock-cells = <0>;
+			clocks = <&pll0_sysclk 3>, <&div4p5_clk>;
+			clock-names = "pll0_sysclk3", "div4.5";
+		};
+		async3_clk: async3 {
+			compatible = "ti,da850-async3-clksrc";
+			#clock-cells = <0>;
+			clocks = <&pll0_sysclk 2>, <&pll1_sysclk 2>;
+			clock-names = "pll0_sysclk2", "pll1_sysclk2";
+		};
+	};
+
+Also see:
+- Documentation/devicetree/bindings/clock/clock-bindings.txt
+