[PATCH 1/3] dt-bindings: pinctrl: mediatek: Add support for mt8189
Cathy Xu (许华婷)
ot_cathy.xu at mediatek.com
Thu Jun 5 19:19:37 PDT 2025
On Thu, 2025-06-05 at 13:44 -0500, Rob Herring wrote:
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>
>
> On Fri, May 23, 2025 at 05:42:46PM +0800, Cathy Xu wrote:
> > Add the new binding document for pinctrl on MediaTek mt8189.
> >
> > Signed-off-by: Cathy Xu <ot_cathy.xu at mediatek.com>
> > ---
> > .../pinctrl/mediatek,mt8189-pinctrl.yaml | 217
> > ++++++++++++++++++
> > 1 file changed, 217 insertions(+)
> > create mode 100644
> > Documentation/devicetree/bindings/pinctrl/mediatek,mt8189-
> > pinctrl.yaml
> >
> > diff --git
> > a/Documentation/devicetree/bindings/pinctrl/mediatek,mt8189-
> > pinctrl.yaml
> > b/Documentation/devicetree/bindings/pinctrl/mediatek,mt8189-
> > pinctrl.yaml
> > new file mode 100644
> > index 000000000000..43b6f15efad8
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/pinctrl/mediatek,mt8189-
> > pinctrl.yaml
> > @@ -0,0 +1,217 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id:
> > https://urldefense.com/v3/__http://devicetree.org/schemas/pinctrl/mediatek,mt8189-pinctrl.yaml*__;Iw!!CTRNKA9wMg0ARbw!j4UJTTJvtDTWGv1OKzbpVHj3XlhhuVfOO82t3AGioVDAv0MjUnoLZQKnMtR446Gh8ImNcgI6m1xvmZViDA$
> > +$schema:
> > https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.yaml*__;Iw!!CTRNKA9wMg0ARbw!j4UJTTJvtDTWGv1OKzbpVHj3XlhhuVfOO82t3AGioVDAv0MjUnoLZQKnMtR446Gh8ImNcgI6m1xaM676rw$
> > +
> > +title: MediaTek MT8189 Pin Controller
> > +
> > +maintainers:
> > + - Lei Xue <lei.xue at mediatek.com>
> > + - Cathy Xu <ot_cathy.xu at mediatek.com>
> > +
> > +description:
> > + The MediaTek's MT8189 Pin controller is used to control SoC
> > pins.
> > +
> > +properties:
> > + compatible:
> > + const: mediatek,mt8189-pinctrl
> > +
> > + reg:
> > + items:
> > + - description: gpio base
> > + - description: lm group IO
> > + - description: rb0 group IO
> > + - description: rb1 group IO
> > + - description: bm0 group IO
> > + - description: bm1 group IO
> > + - description: bm2 group IO
> > + - description: lt0 group IO
> > + - description: lt1 group IO
> > + - description: rt group IO
> > + - description: eint0 group IO
> > + - description: eint1 group IO
> > + - description: eint2 group IO
> > + - description: eint3 group IO
> > + - description: eint4 group IO
> > +
> > + reg-names:
> > + items:
> > + - const: base
> > + - const: lm
> > + - const: rb0
> > + - const: rb1
> > + - const: bm0
> > + - const: bm1
> > + - const: bm2
> > + - const: lt0
> > + - const: lt1
> > + - const: rt
> > + - const: eint0
> > + - const: eint1
> > + - const: eint2
> > + - const: eint3
> > + - const: eint4
> > +
> > + interrupts:
> > + description: The interrupt outputs to sysirq.
>
> Drop
Thank you for your review. It will be fixed in next version.
>
> > + maxItems: 1
> > +
> > + interrupt-controller: true
> > +
> > + '#interrupt-cells':
> > + const: 2
> > +
> > + gpio-controller: true
> > +
> > + '#gpio-cells':
> > + description:
> > + Number of cells in GPIO specifier, should be two. The first
> > cell is the
> > + pin number, the second cell is used to specify optional
> > parameters which
> > + are defined in <dt-bindings/gpio/gpio.h>.
>
> Drop the 1st sentence.
It will be fixed in next version.
>
> > + const: 2
> > +
> > + gpio-ranges:
> > + maxItems: 1
> > +
> > + gpio-line-names: true
> > +
> > +# PIN CONFIGURATION NODES
> > +patternProperties:
> > + '-pins$':
> > + type: object
> > + additionalProperties: false
> > +
> > + patternProperties:
> > + '^pins':
> > + type: object
> > + $ref: /schemas/pinctrl/pincfg-node.yaml
> > + additionalProperties: false
> > + description:
> > + A pinctrl node should contain at least one subnode
> > 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.
> > +
> > + 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
> > arch/arm64/boot/dts/mediatek/mt8189-pinfunc.h
> > + directly, for this SoC.
> > +
> > + drive-strength:
> > + enum: [2, 4, 6, 8, 10, 12, 14, 16]
> > +
> > + bias-pull-down:
> > + oneOf:
> > + - type: boolean
> > + - enum: [100, 101, 102, 103]
> > + description: mt8189 pull down PUPD/R0/R1 type
> > define value.
> > + - enum: [75000, 5000]
> > + description: mt8189 pull down RSEL type si unit
> > value(ohm).
> > + description: |
> > + For pull down type is normal, it doesn't need add
> > R1R0 define
> > + and resistance value.
>
> blank line between paragraphs or re-wrap the text.
It will be fixed in next version.
>
> > + For pull down type is PUPD/R0/R1 type, it can add
> > R1R0 define to
> > + set different resistance. It can support
> > "MTK_PUPD_SET_R1R0_00" &
> > + "MTK_PUPD_SET_R1R0_01" & "MTK_PUPD_SET_R1R0_10" &
> > + "MTK_PUPD_SET_R1R0_11" define in mt8189.
> > + For pull down type is PD/RSEL, it can add resistance
> > value(ohm)
> > + to set different resistance by identifying property
> > + "mediatek,rsel-resistance-in-si-unit". It can
> > support resistance
> > + value(ohm) "75000" & "5000" in mt8189.
>
> No need to repeat values the schema says.
It will be fixed in next version.
>
> > +
> > + bias-pull-up:
> > + oneOf:
> > + - type: boolean
> > + - enum: [100, 101, 102, 103]
> > + description: mt8189 pull up PUPD/R0/R1 type define
> > value.
> > + - enum: [1000, 1500, 2000, 3000, 4000, 5000, 75000]
> > + description: mt8189 pull up RSEL type si unit
> > value(ohm).
> > + description: |
> > + For pull up type is normal, it don't need add R1R0
> > define
> > + and resistance value.
> > + For pull up type is PUPD/R0/R1 type, it can add R1R0
> > define to
> > + set different resistance. It can support
> > "MTK_PUPD_SET_R1R0_00" &
> > + "MTK_PUPD_SET_R1R0_01" & "MTK_PUPD_SET_R1R0_10" &
> > + "MTK_PUPD_SET_R1R0_11" define in mt8189.
> > + For pull up type is PU/RSEL, it can add resistance
> > value(ohm)
> > + to set different resistance by identifying property
> > + "mediatek,rsel-resistance-in-si-unit". It can
> > support resistance
> > + value(ohm) "1000" & "1500" & "2000" & "3000" &
> > "4000" & "5000" &
> > + "75000" in mt8189.
>
> No need to repeat values the schema says.
It will be fixed in next version.
>
> > +
> > + 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
> > +
> > +required:
> > + - compatible
> > + - reg
> > + - interrupts
> > + - interrupt-controller
> > + - '#interrupt-cells'
> > + - gpio-controller
> > + - '#gpio-cells'
> > + - gpio-ranges
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/pinctrl/mt65xx.h>
> > + #include <dt-bindings/interrupt-controller/arm-gic.h>
> > + #define PINMUX_GPIO51__FUNC_SCL0 (MTK_PIN_NO(51) | 2)
> > + #define PINMUX_GPIO52__FUNC_SDA0 (MTK_PIN_NO(52) | 2)
> > +
> > + pio: pinctrl at 10005000 {
> > + compatible = "mediatek,mt8189-pinctrl";
> > + reg = <0x10005000 0x1000>,
> > + <0x11b50000 0x1000>,
> > + <0x11c50000 0x1000>,
> > + <0x11c60000 0x1000>,
> > + <0x11d20000 0x1000>,
> > + <0x11d30000 0x1000>,
> > + <0x11d40000 0x1000>,
> > + <0x11e20000 0x1000>,
> > + <0x11e30000 0x1000>,
> > + <0x11f20000 0x1000>,
> > + <0x11ce0000 0x1000>,
> > + <0x11de0000 0x1000>,
> > + <0x11e60000 0x1000>,
> > + <0x1c01e000 0x1000>,
> > + <0x11f00000 0x1000>;
> > + reg-names = "base", "lm", "rb0", "rb1", "bm0" , "bm1",
> > + "bm2", "lt0", "lt1", "rt", "eint0", "eint1",
> > + "eint2", "eint3", "eint4";
> > + gpio-controller;
> > + #gpio-cells = <2>;
> > + gpio-ranges = <&pio 0 0 182>;
> > + interrupt-controller;
> > + interrupts = <GIC_SPI 239 IRQ_TYPE_LEVEL_HIGH 0>;
> > + #interrupt-cells = <2>;
> > +
> > + i2c0-pins {
> > + pins {
> > + pinmux = <PINMUX_GPIO51__FUNC_SCL0>,
> > + <PINMUX_GPIO52__FUNC_SDA0>;
> > + bias-disable;
> > + };
> > + };
> > + };
> > --
> > 2.45.2
> >
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