On 2022/9/20 15:22, Weilong Chen wrote: > Add the new compatible for HiSilicon common i2c. > > Signed-off-by: Weilong Chen <chenweilong@xxxxxxxxxx> Reviewed-by: Yicong Yang <yangyicong@xxxxxxxxxxxxx> > --- > Change since v4: > - Add description for SoC specific compatibles. > - Use the clock binding. > - Fix decimal, space, case, unused labels. > Link: https://lore.kernel.org/lkml/20220909074842.281232-1-chenweilong@xxxxxxxxxx/T/#m4e1c915ead04f4e2e48d69131053a966801625db > > .../bindings/i2c/hisilicon,hisi-i2c.yaml | 72 +++++++++++++++++++ > MAINTAINERS | 1 + > 2 files changed, 73 insertions(+) > create mode 100644 Documentation/devicetree/bindings/i2c/hisilicon,hisi-i2c.yaml > > diff --git a/Documentation/devicetree/bindings/i2c/hisilicon,hisi-i2c.yaml b/Documentation/devicetree/bindings/i2c/hisilicon,hisi-i2c.yaml > new file mode 100644 > index 000000000000..b06eb8cb88bc > --- /dev/null > +++ b/Documentation/devicetree/bindings/i2c/hisilicon,hisi-i2c.yaml > @@ -0,0 +1,72 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: "http://devicetree.org/schemas/i2c/hisilicon,hisi-i2c.yaml#"; > +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; > + > +title: HiSilicon common IIC controller Device Tree Bindings > + > +maintainers: > + - yangyicong@xxxxxxxxxx > + > +allOf: > + - $ref: /schemas/i2c/i2c-controller.yaml# > + > +properties: > + compatible: > + const: hisilicon,hisi-i2c > + description: > + The HiSilicon common IIC controller can be used for many different > + types of SoC such as Huawei Ascend AI series chips. We use the common > + string (hisi) for specific compatibles to avoid confusion caused by a > + lot of different names. > + > + reg: > + maxItems: 1 > + > + interrupts: > + maxItems: 1 > + > + clocks: > + maxItems: 1 > + > + clock-frequency: > + default: 400000 > + > + i2c-sda-falling-time-ns: > + default: 343 > + > + i2c-scl-falling-time-ns: > + default: 203 > + > + i2c-sda-hold-time-ns: > + default: 830 > + > + i2c-scl-rising-time-ns: > + default: 365 > + > + i2c-digital-filter-width-ns: > + default: 0 > + > +required: > + - compatible > + - reg > + - interrupts > + > +unevaluatedProperties: false > + > +examples: > + - | > + i2c@5038b0000 { > + compatible = "hisilicon,hisi-i2c"; > + reg = <0x38b0000 0x10000>; > + interrupts = <0x0 120 0x4>; > + i2c-sda-falling-time-ns = <56>; > + i2c-scl-falling-time-ns = <56>; > + i2c-sda-hold-time-ns = <56>; > + i2c-scl-rising-time-ns = <56>; > + i2c-digital-filter; > + i2c-digital-filter-width-ns = <0x0>; > + clocks = <&alg_clk>; > + clock-frequency = <400000>; > + }; > diff --git a/MAINTAINERS b/MAINTAINERS > index d213a831133f..4c928a444e4b 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -9155,6 +9155,7 @@ L: linux-i2c@xxxxxxxxxxxxxxx > S: Maintained > W: https://www.hisilicon.com > F: drivers/i2c/busses/i2c-hisi.c > +F: Documentation/devicetree/bindings/i2c/hisilicon,hisi-i2c.yaml > > HISILICON LPC BUS DRIVER > M: john.garry@xxxxxxxxxx >
