On 24/03/21 10:15 am, Rob Herring wrote:
> On Tue, Mar 23, 2021 at 05:33:27PM +1300, Chris Packham wrote:
>> Convert i2c-mpc to YAML.
>>
>> Signed-off-by: Chris Packham <chris.pack...@alliedtelesis.co.nz>
>> ---
>> .../devicetree/bindings/i2c/i2c-mpc.txt | 62 ------------
>> .../devicetree/bindings/i2c/i2c-mpc.yaml | 99 +++++++++++++++++++
>> 2 files changed, 99 insertions(+), 62 deletions(-)
>> delete mode 100644 Documentation/devicetree/bindings/i2c/i2c-mpc.txt
>> create mode 100644 Documentation/devicetree/bindings/i2c/i2c-mpc.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/i2c/i2c-mpc.txt
>> b/Documentation/devicetree/bindings/i2c/i2c-mpc.txt
>> deleted file mode 100644
>> index b15acb43d84d..000000000000
>> --- a/Documentation/devicetree/bindings/i2c/i2c-mpc.txt
>> +++ /dev/null
>> @@ -1,62 +0,0 @@
>> -* I2C
>> -
>> -Required properties :
>> -
>> - - reg : Offset and length of the register set for the device
>> - - compatible : should be "fsl,CHIP-i2c" where CHIP is the name of a
>> - compatible processor, e.g. mpc8313, mpc8543, mpc8544, mpc5121,
>> - mpc5200 or mpc5200b. For the mpc5121, an additional node
>> - "fsl,mpc5121-i2c-ctrl" is required as shown in the example below.
>> - - interrupts : <a b> where a is the interrupt number and b is a
>> - field that represents an encoding of the sense and level
>> - information for the interrupt. This should be encoded based on
>> - the information in section 2) depending on the type of interrupt
>> - controller you have.
>> -
>> -Recommended properties :
>> -
>> - - fsl,preserve-clocking : boolean; if defined, the clock settings
>> - from the bootloader are preserved (not touched).
>> - - clock-frequency : desired I2C bus clock frequency in Hz.
>> - - fsl,timeout : I2C bus timeout in microseconds.
>> -
>> -Examples :
>> -
>> - /* MPC5121 based board */
>> - i2c@1740 {
>> - #address-cells = <1>;
>> - #size-cells = <0>;
>> - compatible = "fsl,mpc5121-i2c", "fsl-i2c";
>> - reg = <0x1740 0x20>;
>> - interrupts = <11 0x8>;
>> - interrupt-parent = <&ipic>;
>> - clock-frequency = <100000>;
>> - };
>> -
>> - i2ccontrol@1760 {
>> - compatible = "fsl,mpc5121-i2c-ctrl";
>> - reg = <0x1760 0x8>;
>> - };
>> -
>> - /* MPC5200B based board */
>> - i2c@3d00 {
>> - #address-cells = <1>;
>> - #size-cells = <0>;
>> - compatible = "fsl,mpc5200b-i2c","fsl,mpc5200-i2c","fsl-i2c";
>> - reg = <0x3d00 0x40>;
>> - interrupts = <2 15 0>;
>> - interrupt-parent = <&mpc5200_pic>;
>> - fsl,preserve-clocking;
>> - };
>> -
>> - /* MPC8544 base board */
>> - i2c@3100 {
>> - #address-cells = <1>;
>> - #size-cells = <0>;
>> - compatible = "fsl,mpc8544-i2c", "fsl-i2c";
>> - reg = <0x3100 0x100>;
>> - interrupts = <43 2>;
>> - interrupt-parent = <&mpic>;
>> - clock-frequency = <400000>;
>> - fsl,timeout = <10000>;
>> - };
>> diff --git a/Documentation/devicetree/bindings/i2c/i2c-mpc.yaml
>> b/Documentation/devicetree/bindings/i2c/i2c-mpc.yaml
>> new file mode 100644
>> index 000000000000..97cea8a817ea
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/i2c/i2c-mpc.yaml
>> @@ -0,0 +1,99 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/i2c/i2c-mpc.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: I2C-Bus adapter for MPC824x/83xx/85xx/86xx/512x/52xx SoCs
>> +
>> +maintainers:
>> + - Chris Packham <chris.pack...@alliedtelesis.co.nz>
>> +
>> +allOf:
>> + - $ref: /schemas/i2c/i2c-controller.yaml#
>> +
>> +properties:
>> + compatible:
>> + anyOf:
>> + - items:
>> + - enum:
>> + - mpc5200-i2c
>> + - fsl,mpc5200b-i2c
>> + - fsl,mpc5200-i2c
>> + - fsl,mpc5121-i2c
>> + - fsl,mpc8313-i2c
>> + - fsl,mpc8543-i2c
>> + - fsl,mpc8544-i2c
>> +
>> + - const: fsl-i2c
>> +
>> + - contains:
>> + const: fsl-i2c
>> + minItems: 1
>> + maxItems: 4
> Can't we drop this and list out any other compatibles?
I'm struggling a little bit with how to get the schema right to allow
one or more of a set of compatible values.
Basically I want to allow 'compatible = "fsl-i2c";' or 'compatible =
"fsl,mpc8544-i2c", "fsl-i2c";' but disallow 'compatible = "foobar",
"fsl-i2c";'
>> +
>> + reg:
>> + maxItems: 1
>> +
>> + interrupts:
>> + maxItems: 1
>> +
>> + fsl,preserve-clocking:
>> + $ref: /schemas/types.yaml#/definitions/flag
>> + description: |
>> + if defined, the clock settings from the bootloader are
>> + preserved (not touched)
>> +
>> + fsl,timeout:
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + description: |
>> + I2C bus timeout in microseconds
>> +
>> +required:
>> + - compatible
>> + - reg
>> + - interrupts
>> +
>> +unevaluatedProperties: false
>> +
>> +examples:
>> + - |
>> + /* MPC5121 based board */
>> + i2c@1740 {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> + compatible = "fsl,mpc5121-i2c", "fsl-i2c";
>> + reg = <0x1740 0x20>;
>> + interrupts = <11 0x8>;
>> + interrupt-parent = <&ipic>;
>> + clock-frequency = <100000>;
>> + };
>> +
>> + i2ccontrol@1760 {
>> + compatible = "fsl,mpc5121-i2c-ctrl";
> Drop this or document it. I'm trying to get rid of undocumented (by
> schemas) compatibles in examples.
Will remove it
>> + reg = <0x1760 0x8>;
>> + };
>> +
>> + /* MPC5200B based board */
>> + i2c@3d00 {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> + compatible = "fsl,mpc5200b-i2c", "fsl,mpc5200-i2c", "fsl-i2c";
>> + reg = <0x3d00 0x40>;
>> + interrupts = <2 15 0>;
>> + interrupt-parent = <&mpc5200_pic>;
>> + fsl,preserve-clocking;
>> + };
>> +
>> + /* MPC8544 base board */
>> + i2c@3100 {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> + compatible = "fsl,mpc8544-i2c", "fsl-i2c";
>> + reg = <0x3100 0x100>;
>> + interrupts = <43 2>;
>> + interrupt-parent = <&mpic>;
>> + clock-frequency = <400000>;
>> + fsl,timeout = <10000>;
>> + };
>> +...
>> --
>> 2.30.2
>>
