| Message ID | 20210329065047.8388-1-zhiyong.tao@mediatek.com |
|---|---|
| Headers | show |
| Series | Mediatek pinctrl patch on mt8195 | expand |
On Mon, 2021-03-29 at 08:58 -0500, Rob Herring wrote: > On Mon, Mar 29, 2021 at 02:50:43PM +0800, Zhiyong Tao wrote: > > The commit adds mt8195 compatible node in binding document. > > > > Signed-off-by: Zhiyong Tao <zhiyong.tao@mediatek.com> > > --- > > .../bindings/pinctrl/pinctrl-mt8195.yaml | 152 ++++++++++++++++++ > > 1 file changed, 152 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml > > > > diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml b/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml > > new file mode 100644 > > index 000000000000..7915b9568c29 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml > > @@ -0,0 +1,152 @@ > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/pinctrl/pinctrl-mt8195.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: Mediatek MT8195 Pin Controller > > + > > +maintainers: > > + - Sean Wang <sean.wang@mediatek.com> > > + > > +description: | > > + The Mediatek's Pin controller is used to control SoC pins. > > + > > +properties: > > + compatible: > > + const: mediatek,mt8195-pinctrl > > + > > + gpio-controller: true > > + > > + '#gpio-cells': > > + description: | > > + Number of cells in GPIO specifier. Since the generic GPIO binding is used, > > + the amount of cells must be specified as 2. See the below > > + mentioned gpio binding representation for description of particular cells. > > + const: 2 > > + > > + gpio-ranges: > > + description: gpio valid number range. > > + maxItems: 1 > > + > > + reg: > > + description: | > > + Physical address base for gpio base registers. There are 8 GPIO > > + physical address base in mt8195. > > + maxItems: 8 > > + > > + reg-names: > > + description: | > > + Gpio base register names. > > + maxItems: 8 > > + > > + interrupt-controller: true > > + > > + '#interrupt-cells': > > + const: 2 > > + > > + interrupts: > > + description: The interrupt outputs to sysirq. > > + maxItems: 1 > > + > > +#PIN CONFIGURATION NODES > > +patternProperties: > > + '^pins': > > Normally we're doing '-pins$'. ==> Thanks for your suggestion. we will change it in next version. > > > + type: object > > + description: | > > + A pinctrl node should contain at least one subnodes representing the > > + pinctrl groups available on the machine. Each subnode will list the > > + pins it needs, and how they should be configured, with regard to muxer > > + configuration, pullups, drive strength, input enable/disable and > > + input schmitt. > > + An example of using macro: > > + pincontroller { > > + /* GPIO0 set as multifunction GPIO0 */ > > + state_0_node_a { > > Use the node name pattern defined. ==> Thanks for your suggestion. we will change it in next version. > > > + pinmux = <PINMUX_GPIO0__FUNC_GPIO0>; > > + }; > > + /* GPIO1 set as multifunction CLKM1 */ > > + state_0_node_b { > > + pinmux = <PINMUX_GPIO1__FUNC_CLKM1>; > > + }; > > + }; > > + $ref: "pinmux-node.yaml" > > + > > + properties: > > + pinmux: > > + description: | > > + Integer array, represents gpio pin number and mux setting. > > + Supported pin number and mux varies for different SoCs, and are defined > > + as macros in dt-bindings/pinctrl/<soc>-pinfunc.h directly. > > + > > + drive-strength: > > + description: | > > + It can support some arguments, such as MTK_DRIVE_4mA, MTK_DRIVE_6mA, etc. See > > + dt-bindings/pinctrl/mt65xx.h. It can only support 2/4/6/8/10/12/14/16mA in mt8195. > > + enum: [2, 4, 6, 8, 10, 12, 14, 16] > > + > > + bias-pull-down: true > > + > > + bias-pull-up: true > > + > > + bias-disable: true > > + > > + output-high: true > > + > > + output-low: true > > + > > + input-enable: true > > + > > + input-disable: true > > + > > + input-schmitt-enable: true > > + > > + input-schmitt-disable: true > > + > > + required: > > + - pinmux > > + > > + additionalProperties: false > > + > > +required: > > + - compatible > > + - reg > > + - interrupts > > + - interrupt-controller > > + - '#interrupt-cells' > > + - gpio-controller > > + - '#gpio-cells' > > + - gpio-ranges > > + > > +additionalProperties: false > > + > > +examples: > > + - | > > + #include <dt-bindings/pinctrl/mt8195-pinfunc.h> > > + #include <dt-bindings/interrupt-controller/arm-gic.h> > > + pio: pinctrl@10005000 { > > + compatible = "mediatek,mt8195-pinctrl"; > > + reg = <0x10005000 0x1000>, > > + <0x11d10000 0x1000>, > > + <0x11d30000 0x1000>, > > + <0x11d40000 0x1000>, > > + <0x11e20000 0x1000>, > > + <0x11e20000 0x1000>, > > + <0x11eb0000 0x1000>, > > + <0x11f40000 0x1000>, > > + <0x1000b000 0x1000>; > > + reg-names = "iocfg0", "iocfg_bm", "iocfg_bl", > > + "iocfg_br", "iocfg_lm", "iocfg_rb", > > + "iocfg_tl", "eint"; > > + gpio-controller; > > + #gpio-cells = <2>; > > + gpio-ranges = <&pio 0 0 144>; > > + interrupt-controller; > > + interrupts = <GIC_SPI 225 IRQ_TYPE_LEVEL_HIGH 0>; > > + #interrupt-cells = <2>; > > + > > + pins { > > + pinmux = <PINMUX_GPIO0__FUNC_GPIO0>; > > + output-low; > > + }; > > + }; > > -- > > 2.18.0 > >