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Date: Mon, 17 Jun 2024 14:14:09 -0400
From: Frank Li <Frank.Li@....com>
To: Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
linux-clk@...r.kernel.org (open list:COMMON CLK FRAMEWORK),
devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS),
linux-kernel@...r.kernel.org (open list)
Cc: imx@...ts.linux.dev
Subject: [PATCH 1/1] dt-bindings: clock: qoriq-clock: convert to yaml format
Convert qoria-clock DT binding to yaml format. Split to two files
qoriq-clock.yaml and qoriq-clock-legancy.yaml.
Addtional change:
- Remove clock consumer part in example
- Fixed example dts error
- Deprecated legancy node
Signed-off-by: Frank Li <Frank.Li@....com>
---
.../clock/fsl,qoriq-clock-legacy.yaml | 84 +++++++
.../bindings/clock/fsl,qoriq-clock.yaml | 203 +++++++++++++++++
.../devicetree/bindings/clock/qoriq-clock.txt | 212 ------------------
3 files changed, 287 insertions(+), 212 deletions(-)
create mode 100644 Documentation/devicetree/bindings/clock/fsl,qoriq-clock-legacy.yaml
create mode 100644 Documentation/devicetree/bindings/clock/fsl,qoriq-clock.yaml
delete mode 100644 Documentation/devicetree/bindings/clock/qoriq-clock.txt
diff --git a/Documentation/devicetree/bindings/clock/fsl,qoriq-clock-legacy.yaml b/Documentation/devicetree/bindings/clock/fsl,qoriq-clock-legacy.yaml
new file mode 100644
index 0000000000000..97b96a1a58254
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/fsl,qoriq-clock-legacy.yaml
@@ -0,0 +1,84 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/fsl,qoriq-clock-legacy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Legacy Clock Block on Freescale QorIQ Platforms
+
+maintainers:
+ - Frank Li <Frank.Li@....com>
+
+description: |
+ These nodes are deprecated. Kernels should continue to support
+ device trees with these nodes, but new device trees should not use them.
+
+ Most of the bindings are from the common clock binding[1].
+ [1] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+properties:
+ compatible:
+ enum:
+ - fsl,qoriq-core-pll-1.0
+ - fsl,qoriq-core-pll-2.0
+ - fsl,qoriq-core-mux-1.0
+ - fsl,qoriq-core-mux-2.0
+ - fsl,qoriq-sysclk-1.0
+ - fsl,qoriq-sysclk-2.0
+ - fsl,qoriq-platform-pll-1.0
+ - fsl,qoriq-platform-pll-2.0
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ minItems: 1
+ maxItems: 4
+
+ clock-names:
+ minItems: 1
+ maxItems: 4
+
+ clock-output-names:
+ minItems: 1
+ maxItems: 8
+
+ '#clock-cells':
+ minimum: 0
+ maximum: 1
+
+required:
+ - compatible
+ - '#clock-cells'
+
+additionalProperties: false
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - fsl,qoriq-sysclk-1.0
+ - fsl,qoriq-sysclk-2.0
+ then:
+ properties:
+ '#clock-cells':
+ const: 0
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - fsl,qoriq-core-pll-1.0
+ - fsl,qoriq-core-pll-2.0
+ then:
+ properties:
+ '#clock-cells':
+ const: 1
+ description: |
+ * 0 - equal to the PLL frequency
+ * 1 - equal to the PLL frequency divided by 2
+ * 2 - equal to the PLL frequency divided by 4
+
diff --git a/Documentation/devicetree/bindings/clock/fsl,qoriq-clock.yaml b/Documentation/devicetree/bindings/clock/fsl,qoriq-clock.yaml
new file mode 100644
index 0000000000000..d641756b04635
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/fsl,qoriq-clock.yaml
@@ -0,0 +1,203 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/fsl,qoriq-clock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Clock Block on Freescale QorIQ Platforms
+
+maintainers:
+ - Frank Li <Frank.Li@....com>
+
+
+description: |
+
+ Freescale QorIQ chips take primary clocking input from the external
+ SYSCLK signal. The SYSCLK input (frequency) is multiplied using
+ multiple phase locked loops (PLL) to create a variety of frequencies
+ which can then be passed to a variety of internal logic, including
+ cores and peripheral IP blocks.
+ Please refer to the Reference Manual for details.
+
+ All references to "1.0" and "2.0" refer to the QorIQ chassis version to
+ which the chip complies.
+
+ Chassis Version Example Chips
+ --------------- -------------
+ 1.0 p4080, p5020, p5040
+ 2.0 t4240, b4860
+
+ Clock Provider
+
+ The clockgen node should act as a clock provider, though in older device
+ trees the children of the clockgen node are the clock providers.
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - fsl,p2041-clockgen
+ - fsl,p3041-clockgen
+ - fsl,p4080-clockgen
+ - fsl,p5020-clockgen
+ - fsl,p5040-clockgen
+ - fsl,t1023-clockgen
+ - fsl,t1024-clockgen
+ - fsl,t1040-clockgen
+ - fsl,t1042-clockgen
+ - fsl,t2080-clockgen
+ - fsl,t2081-clockgen
+ - fsl,t4240-clockgen
+ - fsl,b4420-clockgen
+ - fsl,b4860-clockgen
+ - fsl,ls1012a-clockgen
+ - fsl,ls1021a-clockgen
+ - fsl,ls1028a-clockgen
+ - fsl,ls1043a-clockgen
+ - fsl,ls1046a-clockgen
+ - fsl,ls1088a-clockgen
+ - fsl,ls2080a-clockgen
+ - fsl,lx2160a-clockgen
+ - enum:
+ - fsl,qoriq-clockgen-1.0
+ - fsl,qoriq-clockgen-2.0
+ minItems: 1
+
+ reg:
+ maxItems: 1
+
+ ranges: true
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 1
+
+ '#clock-cells':
+ const: 2
+ description: |
+ The first cell of the clock specifier is the clock type, and the
+ second cell is the clock index for the specified type.
+
+ Type# Name Index Cell
+ 0 sysclk must be 0
+ 1 cmux index (n in CLKCnCSR)
+ 2 hwaccel index (n in CLKCGnHWACSR)
+ 3 fman 0 for fm1, 1 for fm2
+ 4 platform pll n=pll/(n+1). For example, when n=1,
+ that means output_freq=PLL_freq/2.
+ 5 coreclk must be 0
+
+ clock-frequency:
+ description: Input system clock frequency (SYSCLK)
+
+ clocks:
+ items:
+ - description:
+ sysclk may be provided as an input clock. Either clock-frequency
+ or clocks must be provided.
+ - description:
+ A second input clock, called "coreclk", may be provided if
+ core PLLs are based on a different input clock from the
+ platform PLL.
+ minItems: 1
+
+ clock-names:
+ items:
+ - const: sysclk
+ - const: coreclk
+
+patternProperties:
+ '^mux[0-9]@[a-f0-9]+$':
+ deprecated: true
+ $ref: fsl,qoriq-clock-legacy.yaml
+
+ '^sysclk+$':
+ deprecated: true
+ $ref: fsl,qoriq-clock-legacy.yaml
+
+ '^pll[0-9]@[a-f0-9]+$':
+ deprecated: true
+ $ref: fsl,qoriq-clock-legacy.yaml
+
+ '^platform\-pll@[a-f0-9]+$':
+ deprecated: true
+ $ref: fsl,qoriq-clock-legacy.yaml
+
+required:
+ - compatible
+ - reg
+ - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ /* clock provider example */
+ global-utilities@...00 {
+ compatible = "fsl,p5020-clockgen", "fsl,qoriq-clockgen-1.0";
+ reg = <0xe1000 0x1000>;
+ clock-frequency = <133333333>;
+ #clock-cells = <2>;
+ };
+
+ - |
+ /* Legacy example */
+ global-utilities@...00 {
+ compatible = "fsl,p5020-clockgen", "fsl,qoriq-clockgen-1.0";
+ reg = <0xe1000 0x1000>;
+ ranges = <0x0 0xe1000 0x1000>;
+ clock-frequency = <133333333>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ #clock-cells = <2>;
+
+ sysclk: sysclk {
+ compatible = "fsl,qoriq-sysclk-1.0";
+ clock-output-names = "sysclk";
+ #clock-cells = <0>;
+ };
+
+ pll0: pll0@800 {
+ compatible = "fsl,qoriq-core-pll-1.0";
+ reg = <0x800 0x4>;
+ #clock-cells = <1>;
+ clocks = <&sysclk>;
+ clock-output-names = "pll0", "pll0-div2";
+ };
+
+ pll1: pll1@820 {
+ compatible = "fsl,qoriq-core-pll-1.0";
+ reg = <0x820 0x4>;
+ #clock-cells = <1>;
+ clocks = <&sysclk>;
+ clock-output-names = "pll1", "pll1-div2";
+ };
+
+ mux0: mux0@0 {
+ compatible = "fsl,qoriq-core-mux-1.0";
+ reg = <0x0 0x4>;
+ #clock-cells = <0>;
+ clocks = <&pll0 0>, <&pll0 1>, <&pll1 0>, <&pll1 1>;
+ clock-names = "pll0", "pll0-div2", "pll1", "pll1-div2";
+ clock-output-names = "cmux0";
+ };
+
+ mux1: mux1@20 {
+ compatible = "fsl,qoriq-core-mux-1.0";
+ reg = <0x20 0x4>;
+ #clock-cells = <0>;
+ clocks = <&pll0 0>, <&pll0 1>, <&pll1 0>, <&pll1 1>;
+ clock-names = "pll0", "pll0-div2", "pll1", "pll1-div2";
+ clock-output-names = "cmux1";
+ };
+
+ platform-pll@c00 {
+ #clock-cells = <1>;
+ reg = <0xc00 0x4>;
+ compatible = "fsl,qoriq-platform-pll-1.0";
+ clocks = <&sysclk>;
+ clock-output-names = "platform-pll", "platform-pll-div2";
+ };
+ };
diff --git a/Documentation/devicetree/bindings/clock/qoriq-clock.txt b/Documentation/devicetree/bindings/clock/qoriq-clock.txt
deleted file mode 100644
index 10119d9ef4b11..0000000000000
--- a/Documentation/devicetree/bindings/clock/qoriq-clock.txt
+++ /dev/null
@@ -1,212 +0,0 @@
-* Clock Block on Freescale QorIQ Platforms
-
-Freescale QorIQ chips take primary clocking input from the external
-SYSCLK signal. The SYSCLK input (frequency) is multiplied using
-multiple phase locked loops (PLL) to create a variety of frequencies
-which can then be passed to a variety of internal logic, including
-cores and peripheral IP blocks.
-Please refer to the Reference Manual for details.
-
-All references to "1.0" and "2.0" refer to the QorIQ chassis version to
-which the chip complies.
-
-Chassis Version Example Chips
---------------- -------------
-1.0 p4080, p5020, p5040
-2.0 t4240, b4860
-
-1. Clock Block Binding
-
-Required properties:
-- compatible: Should contain a chip-specific clock block compatible
- string and (if applicable) may contain a chassis-version clock
- compatible string.
-
- Chip-specific strings are of the form "fsl,<chip>-clockgen", such as:
- * "fsl,p2041-clockgen"
- * "fsl,p3041-clockgen"
- * "fsl,p4080-clockgen"
- * "fsl,p5020-clockgen"
- * "fsl,p5040-clockgen"
- * "fsl,t1023-clockgen"
- * "fsl,t1024-clockgen"
- * "fsl,t1040-clockgen"
- * "fsl,t1042-clockgen"
- * "fsl,t2080-clockgen"
- * "fsl,t2081-clockgen"
- * "fsl,t4240-clockgen"
- * "fsl,b4420-clockgen"
- * "fsl,b4860-clockgen"
- * "fsl,ls1012a-clockgen"
- * "fsl,ls1021a-clockgen"
- * "fsl,ls1028a-clockgen"
- * "fsl,ls1043a-clockgen"
- * "fsl,ls1046a-clockgen"
- * "fsl,ls1088a-clockgen"
- * "fsl,ls2080a-clockgen"
- * "fsl,lx2160a-clockgen"
- Chassis-version clock strings include:
- * "fsl,qoriq-clockgen-1.0": for chassis 1.0 clocks
- * "fsl,qoriq-clockgen-2.0": for chassis 2.0 clocks
-- reg: Describes the address of the device's resources within the
- address space defined by its parent bus, and resource zero
- represents the clock register set
-
-Optional properties:
-- ranges: Allows valid translation between child's address space and
- parent's. Must be present if the device has sub-nodes.
-- #address-cells: Specifies the number of cells used to represent
- physical base addresses. Must be present if the device has
- sub-nodes and set to 1 if present
-- #size-cells: Specifies the number of cells used to represent
- the size of an address. Must be present if the device has
- sub-nodes and set to 1 if present
-- clock-frequency: Input system clock frequency (SYSCLK)
-- clocks: If clock-frequency is not specified, sysclk may be provided
- as an input clock. Either clock-frequency or clocks must be
- provided.
- A second input clock, called "coreclk", may be provided if
- core PLLs are based on a different input clock from the
- platform PLL.
-- clock-names: Required if a coreclk is present. Valid names are
- "sysclk" and "coreclk".
-
-2. Clock Provider
-
-The clockgen node should act as a clock provider, though in older device
-trees the children of the clockgen node are the clock providers.
-
-When the clockgen node is a clock provider, #clock-cells = <2>.
-The first cell of the clock specifier is the clock type, and the
-second cell is the clock index for the specified type.
-
- Type# Name Index Cell
- 0 sysclk must be 0
- 1 cmux index (n in CLKCnCSR)
- 2 hwaccel index (n in CLKCGnHWACSR)
- 3 fman 0 for fm1, 1 for fm2
- 4 platform pll n=pll/(n+1). For example, when n=1,
- that means output_freq=PLL_freq/2.
- 5 coreclk must be 0
-
-3. Example
-
- clockgen: global-utilities@...00 {
- compatible = "fsl,p5020-clockgen", "fsl,qoriq-clockgen-1.0";
- clock-frequency = <133333333>;
- reg = <0xe1000 0x1000>;
- #clock-cells = <2>;
- };
-
- fman@...000 {
- ...
- clocks = <&clockgen 3 0>;
- ...
- };
-}
-4. Legacy Child Nodes
-
-NOTE: These nodes are deprecated. Kernels should continue to support
-device trees with these nodes, but new device trees should not use them.
-
-Most of the bindings are from the common clock binding[1].
- [1] Documentation/devicetree/bindings/clock/clock-bindings.txt
-
-Required properties:
-- compatible : Should include one of the following:
- * "fsl,qoriq-core-pll-1.0" for core PLL clocks (v1.0)
- * "fsl,qoriq-core-pll-2.0" for core PLL clocks (v2.0)
- * "fsl,qoriq-core-mux-1.0" for core mux clocks (v1.0)
- * "fsl,qoriq-core-mux-2.0" for core mux clocks (v2.0)
- * "fsl,qoriq-sysclk-1.0": for input system clock (v1.0).
- It takes parent's clock-frequency as its clock.
- * "fsl,qoriq-sysclk-2.0": for input system clock (v2.0).
- It takes parent's clock-frequency as its clock.
- * "fsl,qoriq-platform-pll-1.0" for the platform PLL clock (v1.0)
- * "fsl,qoriq-platform-pll-2.0" for the platform PLL clock (v2.0)
-- #clock-cells: From common clock binding. The number of cells in a
- clock-specifier. Should be <0> for "fsl,qoriq-sysclk-[1,2].0"
- clocks, or <1> for "fsl,qoriq-core-pll-[1,2].0" clocks.
- For "fsl,qoriq-core-pll-[1,2].0" clocks, the single
- clock-specifier cell may take the following values:
- * 0 - equal to the PLL frequency
- * 1 - equal to the PLL frequency divided by 2
- * 2 - equal to the PLL frequency divided by 4
-
-Recommended properties:
-- clocks: Should be the phandle of input parent clock
-- clock-names: From common clock binding, indicates the clock name
-- clock-output-names: From common clock binding, indicates the names of
- output clocks
-- reg: Should be the offset and length of clock block base address.
- The length should be 4.
-
-Legacy Example:
-/ {
- clockgen: global-utilities@...00 {
- compatible = "fsl,p5020-clockgen", "fsl,qoriq-clockgen-1.0";
- ranges = <0x0 0xe1000 0x1000>;
- clock-frequency = <133333333>;
- reg = <0xe1000 0x1000>;
- #address-cells = <1>;
- #size-cells = <1>;
-
- sysclk: sysclk {
- #clock-cells = <0>;
- compatible = "fsl,qoriq-sysclk-1.0";
- clock-output-names = "sysclk";
- };
-
- pll0: pll0@800 {
- #clock-cells = <1>;
- reg = <0x800 0x4>;
- compatible = "fsl,qoriq-core-pll-1.0";
- clocks = <&sysclk>;
- clock-output-names = "pll0", "pll0-div2";
- };
-
- pll1: pll1@820 {
- #clock-cells = <1>;
- reg = <0x820 0x4>;
- compatible = "fsl,qoriq-core-pll-1.0";
- clocks = <&sysclk>;
- clock-output-names = "pll1", "pll1-div2";
- };
-
- mux0: mux0@0 {
- #clock-cells = <0>;
- reg = <0x0 0x4>;
- compatible = "fsl,qoriq-core-mux-1.0";
- clocks = <&pll0 0>, <&pll0 1>, <&pll1 0>, <&pll1 1>;
- clock-names = "pll0", "pll0-div2", "pll1", "pll1-div2";
- clock-output-names = "cmux0";
- };
-
- mux1: mux1@20 {
- #clock-cells = <0>;
- reg = <0x20 0x4>;
- compatible = "fsl,qoriq-core-mux-1.0";
- clocks = <&pll0 0>, <&pll0 1>, <&pll1 0>, <&pll1 1>;
- clock-names = "pll0", "pll0-div2", "pll1", "pll1-div2";
- clock-output-names = "cmux1";
- };
-
- platform-pll: platform-pll@c00 {
- #clock-cells = <1>;
- reg = <0xc00 0x4>;
- compatible = "fsl,qoriq-platform-pll-1.0";
- clocks = <&sysclk>;
- clock-output-names = "platform-pll", "platform-pll-div2";
- };
- };
-};
-
-Example for legacy clock consumer:
-
-/ {
- cpu0: PowerPC,e5500@0 {
- ...
- clocks = <&mux0>;
- ...
- };
-};
--
2.34.1
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