On 2022/11/1 16:07, Weilong Chen wrote: > Add the new compatible for HiSilicon i2c. > Reviewed-by: Yicong Yang <yangyicong@xxxxxxxxxxxxx> > Signed-off-by: Weilong Chen <chenweilong@xxxxxxxxxx> > Reviewed-by: Rob Herring <robh@xxxxxxxxxx> > --- > Change since v9: > - No change > Link: https://lore.kernel.org/lkml/20221029115937.179788-2-chenweilong@xxxxxxxxxx/ > > Change since v8: > - Use vendor,soc-ipblock format. > - Drop quotes. > - Drop "Device Tree bindings". > - Description goes to top level description. > - Use defines for constants. > Link: https://lore.kernel.org/lkml/20221024015151.342651-2-chenweilong@xxxxxxxxxx/ > > .../bindings/i2c/hisilicon,ascend910-i2c.yaml | 73 +++++++++++++++++++ > MAINTAINERS | 1 + > 2 files changed, 74 insertions(+) > create mode 100644 Documentation/devicetree/bindings/i2c/hisilicon,ascend910-i2c.yaml > > diff --git a/Documentation/devicetree/bindings/i2c/hisilicon,ascend910-i2c.yaml b/Documentation/devicetree/bindings/i2c/hisilicon,ascend910-i2c.yaml > new file mode 100644 > index 000000000000..7d7a8de7bcd8 > --- /dev/null > +++ b/Documentation/devicetree/bindings/i2c/hisilicon,ascend910-i2c.yaml > @@ -0,0 +1,73 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/i2c/hisilicon,ascend910-i2c.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: HiSilicon common I2C controller > + > +maintainers: > + - Yicong Yang <yangyicong@xxxxxxxxxxxxx> > + > +description: > + The HiSilicon common I2C controller can be used for many different > + types of SoC such as Huawei Ascend AI series chips. > + > +allOf: > + - $ref: /schemas/i2c/i2c-controller.yaml# > + > +properties: > + compatible: > + const: hisilicon,ascend910-i2c > + > + 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: > + - | > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + > + i2c@38b0000 { > + compatible = "hisilicon,ascend910-i2c"; > + reg = <0x38b0000 0x10000>; > + interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>; > + 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 d1214d83c2df..d42e34d1e8e2 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -9228,6 +9228,7 @@ M: Yicong Yang <yangyicong@xxxxxxxxxxxxx> > L: linux-i2c@xxxxxxxxxxxxxxx > S: Maintained > W: https://www.hisilicon.com > +F: Documentation/devicetree/bindings/i2c/hisilicon,ascend910-i2c.yaml > F: drivers/i2c/busses/i2c-hisi.c > > HISILICON LPC BUS DRIVER >
