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Message-Id: <20210224023116.571718-4-liambeguin@gmail.com>
Date: Tue, 23 Feb 2021 21:31:16 -0500
From: Liam Beguin <liambeguin@...il.com>
To: liambeguin@...il.com, mturquette@...libre.com, sboyd@...nel.org
Cc: linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, robh+dt@...nel.org
Subject: [PATCH v3 3/3] dt-bindings: clock: add ti,lmk04832 bindings
From: Liam Beguin <lvb@...hos.com>
Document devicetree bindings for Texas Instruments' LMK04832.
The LMK04208 is a high performance clock conditioner with superior clock
jitter cleaning, generation, and distribution with JEDEC JESD204B
support.
Signed-off-by: Liam Beguin <lvb@...hos.com>
---
.../bindings/clock/ti,lmk04832.yaml | 198 ++++++++++++++++++
1 file changed, 198 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/ti,lmk04832.yaml
diff --git a/Documentation/devicetree/bindings/clock/ti,lmk04832.yaml b/Documentation/devicetree/bindings/clock/ti,lmk04832.yaml
new file mode 100644
index 000000000000..c0d9ab650e80
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/ti,lmk04832.yaml
@@ -0,0 +1,198 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/ti,lmk04832.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Clock bindings for the Texas Instruments LMK04832
+
+maintainers:
+ - Liam Beguin <liambeguin@...il.com>
+
+description: |
+ Devicetree binding for the LMK04832, a clock conditioner with JEDEC JESD204B
+ support. The LMK04832 is pin compatible with the LMK0482x family.
+
+ Link to datasheet, https://www.ti.com/lit/ds/symlink/lmk04832.pdf
+
+properties:
+ compatible:
+ enum:
+ - ti,lmk04832
+
+ reg:
+ maxItems: 1
+
+ '#clock-cells':
+ const: 1
+
+ clocks:
+ items:
+ - description: PLL2 reference clock.
+
+ clock-names:
+ items:
+ - const: oscin
+
+ reset-gpios:
+ maxItems: 1
+
+ ti,spi-4wire-rdbk:
+ description: |
+ Select SPI 4wire readback pin configuration.
+ Available readback pins are,
+ CLKin_SEL0 0
+ CLKin_SEL1 1
+ RESET 2
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2]
+ default: 1
+
+ ti,vco-hz:
+ description: Optional to set VCO frequency of the PLL in Hertz.
+
+ ti,sysref-ddly:
+ description: SYSREF digital delay value.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 8
+ maximum: 8191
+ default: 8
+
+ ti,sysref-mux:
+ description: |
+ SYSREF Mux configuration.
+ Available options are,
+ Normal SYNC 0
+ Re-clocked 1
+ SYSREF Pulser 2
+ SYSREF Continuous 3
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3]
+ default: 3
+
+ ti,sync-mode:
+ description: SYNC pin configuration.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2]
+ default: 1
+
+ ti,sysref-pulse-count:
+ description:
+ Number of SYSREF pulses to send when SYSREF is not in continuous mode.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [1, 2, 4, 8]
+ default: 4
+
+patternProperties:
+ "@[0-9a-d]+$":
+ type: object
+ description:
+ Child nodes used to configure output clocks.
+
+ properties:
+ reg:
+ description:
+ clock output identifier.
+ minimum: 0
+ maximum: 13
+
+ ti,clkout-fmt:
+ description:
+ Clock output format.
+ Available options are,
+ Powerdown 0x00
+ LVDS 0x01
+ HSDS 6 mA 0x02
+ HSDS 8 mA 0x03
+ LVPECL 1600 mV 0x04
+ LVPECL 2000 mV 0x05
+ LCPECL 0x06
+ CML 16 mA 0x07
+ CML 24 mA 0x08
+ CML 32 mA 0x09
+ CMOS (Off/Inverted) 0x0a
+ CMOS (Normal/Off) 0x0b
+ CMOS (Inverted/Inverted) 0x0c
+ CMOS (Inverted/Normal) 0x0d
+ CMOS (Normal/Inverted) 0x0e
+ CMOS (Normal/Normal) 0x0f
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+
+ ti,clkout-sysref:
+ description:
+ Select SYSREF clock path for output clock.
+ type: boolean
+
+ required:
+ - reg
+
+required:
+ - compatible
+ - reg
+ - '#clock-cells'
+ - clocks
+ - clock-names
+
+additionalProperties: false
+
+examples:
+ - |
+ clocks {
+ lmk04832_oscin: oscin {
+ compatible = "fixed-clock";
+
+ #clock-cells = <0>;
+ clock-frequency = <122880000>;
+ clock-output-names = "lmk04832-oscin";
+ };
+ };
+
+ spi0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ lmk04832: clock-controller@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ reg = <0>;
+
+ compatible = "ti,lmk04832";
+ spi-max-frequency = <781250>;
+
+ reset-gpios = <&gpio_lmk 0 0 0>;
+
+ #clock-cells = <1>;
+ clocks = <&lmk04832_oscin>;
+ clock-names = "oscin";
+
+ ti,spi-4wire-rdbk = <0>;
+ ti,vco-hz = <2457600000>;
+
+ assigned-clocks =
+ <&lmk04832 0>, <&lmk04832 1>,
+ <&lmk04832 2>, <&lmk04832 3>,
+ <&lmk04832 4>,
+ <&lmk04832 6>, <&lmk04832 7>,
+ <&lmk04832 10>, <&lmk04832 11>;
+ assigned-clock-rates =
+ <122880000>, <384000>,
+ <122880000>, <384000>,
+ <122880000>,
+ <153600000>, <384000>,
+ <614400000>, <384000>;
+
+ clkout0@0 {
+ reg = <0>;
+ ti,clkout-fmt = <0x01>; // LVDS
+ };
+
+ clkout1@1 {
+ reg = <1>;
+ ti,clkout-fmt = <0x01>; // LVDS
+ ti,clkout-sysref;
+ };
+ };
+ };
--
2.30.1.489.g328c10930387
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