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Message-ID: <20211018114739.14026-2-sam.shih@mediatek.com>
Date: Mon, 18 Oct 2021 19:47:36 +0800
From: Sam Shih <sam.shih@...iatek.com>
To: Linus Walleij <linus.walleij@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Sean Wang <sean.wang@...nel.org>, <linux-gpio@...r.kernel.org>,
<devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>
CC: John Crispin <john@...ozen.org>,
Ryder Lee <Ryder.Lee@...iatek.com>,
"Sam Shih" <sam.shih@...iatek.com>
Subject: [PATCH v8 1/4] dt-bindings: pinctrl: update bindings for MT7986 SoC
This updates bindings for MT7986 pinctrl driver. The
difference of pinctrl between mt7986a and mt7986b is that pin-41 to
pin-65 do not exist on mt7986b
Signed-off-by: Sam Shih <sam.shih@...iatek.com>
---
v8: fixed uart node in yaml dts example
v7: updated pinctcl node binding description, and separate pinctrl
part into a single patch series
Original thread:
https://lore.kernel.org/all/8348ed3e-c561-ad7e-fe9e-a31ed346d8d0@gmail.com/
v6: fixed yamllint warnings/errors v2
v5: fixed yamllint warnings/errors v1
v4: used yaml format instead of txt format document
v3: make mt7986 pinctrl bindings as a separate file
v2: deleted the redundant description of mt7986a/mt7986b
---
.../pinctrl/mediatek,mt7986-pinctrl.yaml | 363 ++++++++++++++++++
1 file changed, 363 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/mediatek,mt7986-pinctrl.yaml
diff --git a/Documentation/devicetree/bindings/pinctrl/mediatek,mt7986-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/mediatek,mt7986-pinctrl.yaml
new file mode 100644
index 000000000000..7602b11e8bce
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/mediatek,mt7986-pinctrl.yaml
@@ -0,0 +1,363 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/mediatek,mt7986-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek MT7986 Pin Controller Device Tree Bindings
+
+maintainers:
+ - Sean Wang <sean.wang@...nel.org>
+
+description: |+
+ The MediaTek's MT7986 Pin controller is used to control SoC pins.
+
+properties:
+ compatible:
+ enum:
+ - mediatek,mt7986a-pinctrl
+ - mediatek,mt7986b-pinctrl
+
+ reg:
+ minItems: 8
+ maxItems: 8
+
+ reg-names:
+ items:
+ - const: gpio
+ - const: iocfg_rt
+ - const: iocfg_rb
+ - const: iocfg_lt
+ - const: iocfg_lb
+ - const: iocfg_tr
+ - const: iocfg_tl
+ - const: eint
+
+ gpio-controller: true
+
+ "#gpio-cells":
+ const: 2
+ 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.
+
+ gpio-ranges:
+ minItems: 1
+ maxItems: 5
+ description: |
+ GPIO valid number range.
+
+ interrupt-controller: true
+
+ interrupts:
+ maxItems: 1
+
+ "#interrupt-cells":
+ const: 2
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - gpio-controller
+ - "#gpio-cells"
+
+patternProperties:
+ '-pins$':
+ type: object
+ additionalProperties: false
+
+ patternProperties:
+ '.*mux.*':
+ type: object
+ additionalProperties: false
+ description: |
+ pinmux configuration nodes.
+
+ The following table shows the effective values of "group", "function"
+ properties and chip pinout pins
+
+ groups function pins (in pin#)
+ ---------------------------------------------------------------------
+ "watchdog" "watchdog" 0
+ "wifi_led" "led" 1, 2
+ "i2c" "i2c" 3, 4
+ "uart1_0" "uart" 7, 8, 9, 10
+ "pcie_clk" "pcie" 9
+ "pcie_wake" "pcie" 10
+ "spi1_0" "spi" 11, 12, 13, 14
+ "pwm1_1" "pwm" 20,
+ "pwm0" "pwm" 21,
+ "pwm1_0" "pwm" 22,
+ "snfi" "flash" 23, 24, 25, 26, 27, 28
+ "spi1_2" "spi" 29, 30, 31, 32
+ "emmc_45" "emmc" 22, 23, 24, 25, 26, 27, 28, 29, 30,
+ 31, 32
+ "spi1_1" "spi" 23, 24, 25, 26
+ "uart1_2" "uart" 29, 30, 31, 32
+ "uart1_1" "uart" 23, 24, 25, 26
+ "uart2_0" "uart" 29, 30, 31, 32
+ "spi0" "spi" 33, 34, 35, 36
+ "spi0_wp_hold" "spi" 37, 38
+ "uart1_3_rx_tx" "uart" 35, 36
+ "uart1_3_cts_rts" "uart" 37, 38
+ "uart2_1" "uart" 33, 34, 35, 36
+ "spi1_3" "spi" 33, 34, 35, 36
+ "uart0" "uart" 39, 40
+ "pcie_pereset" "pcie" 41
+ "uart1" "uart" 42, 43, 44, 45
+ "uart2" "uart" 46, 47, 48, 49
+ "emmc_51" "emmc" 50, 51, 52, 53, 54, 55, 56, 57, 57,
+ 59, 60, 61
+ "pcm" "audio" 62, 63, 64, 65
+ "i2s" "audio" 62, 63, 64, 65
+ "switch_int" "eth" 66
+ "mdc_mdio" "eth" 67
+
+ $ref: "/schemas/pinctrl/pinmux-node.yaml"
+ properties:
+ function:
+ description: |
+ A string containing the name of the function to mux to the group.
+ There is no "audio", "pcie" functions on mt7986b, you can only use
+ those functions on mt7986a.
+ enum: [audio, emmc, eth, i2c, led, flash, pcie, pwm, spi, uart,
+ watchdog, wifi]
+ groups:
+ description: |
+ An array of strings. Each string contains the name of a group.
+ There is no "pcie_pereset", "uart1", "uart2" "emmc_51", "pcm",
+ and "i2s" groups on mt7986b, you can only use those groups on
+ mt7986a.
+ required:
+ - function
+ - groups
+
+ allOf:
+ - if:
+ properties:
+ function:
+ const: audio
+ then:
+ properties:
+ groups:
+ enum: [pcm, i2s]
+ - if:
+ properties:
+ function:
+ const: emmc
+ then:
+ properties:
+ groups:
+ enum: [emmc, emmc_rst]
+ - if:
+ properties:
+ function:
+ const: eth
+ then:
+ properties:
+ groups:
+ enum: [switch_int, mdc_mdio]
+ - if:
+ properties:
+ function:
+ const: i2c
+ then:
+ properties:
+ groups:
+ enum: [i2c]
+ - if:
+ properties:
+ function:
+ const: led
+ then:
+ properties:
+ groups:
+ enum: [wifi_led]
+ - if:
+ properties:
+ function:
+ const: flash
+ then:
+ properties:
+ groups:
+ enum: [snfi]
+ - if:
+ properties:
+ function:
+ const: pcie
+ then:
+ properties:
+ groups:
+ enum: [pcie_clk, pcie_wake, pcie_pereset]
+ - if:
+ properties:
+ function:
+ const: pwm
+ then:
+ properties:
+ groups:
+ enum: [pwm0, pwm1_0, pwm1_1]
+ - if:
+ properties:
+ function:
+ const: spi
+ then:
+ properties:
+ groups:
+ enum: [spi0, spi0_wp_hold, spi1_0, spi1_1, spi1_2, spi1_3]
+ - if:
+ properties:
+ function:
+ const: uart
+ then:
+ properties:
+ groups:
+ enum: [uart1_0, uart1_1, uart1_2, uart1_3_rx_tx,
+ uart1_3_cts_rts, uart2_0, uart2_1, uart0, uart1, uart2]
+ - if:
+ properties:
+ function:
+ const: watchdog
+ then:
+ properties:
+ groups:
+ enum: [watchdog]
+ - if:
+ properties:
+ function:
+ const: wifi
+ then:
+ properties:
+ groups:
+ enum: [wf_2g, wf_5g, wf_dbdc]
+ '.*conf.*':
+ type: object
+ additionalProperties: false
+ description: |
+ pinconf configuration nodes.
+ $ref: "/schemas/pinctrl/pincfg-node.yaml"
+
+ properties:
+ pins:
+ description: |
+ An array of strings. Each string contains the name of a pin.
+ There is no PIN 41 to PIN 65 above on mt7686b, you can only use
+ those pins on mt7986a.
+ enum: [SYS_WATCHDOG, WF2G_LED, WF5G_LED, I2C_SCL, I2C_SDA, GPIO_0,
+ GPIO_1, GPIO_2, GPIO_3, GPIO_4, GPIO_5, GPIO_6, GPIO_7,
+ GPIO_8, GPIO_9, GPIO_10, GPIO_11, GPIO_12, GPIO_13, GPIO_14,
+ GPIO_15, PWM0, PWM1, SPI0_CLK, SPI0_MOSI, SPI0_MISO, SPI0_CS,
+ SPI0_HOLD, SPI0_WP, SPI1_CLK, SPI1_MOSI, SPI1_MISO, SPI1_CS,
+ SPI2_CLK, SPI2_MOSI, SPI2_MISO, SPI2_CS, SPI2_HOLD, SPI2_WP,
+ UART0_RXD, UART0_TXD, PCIE_PERESET_N, UART1_RXD, UART1_TXD,
+ UART1_CTS, UART1_RTS, UART2_RXD, UART2_TXD, UART2_CTS,
+ UART2_RTS, EMMC_DATA_0, EMMC_DATA_1, EMMC_DATA_2,
+ EMMC_DATA_3, EMMC_DATA_4, EMMC_DATA_5, EMMC_DATA_6,
+ EMMC_DATA_7, EMMC_CMD, EMMC_CK, EMMC_DSL, EMMC_RSTB, PCM_DTX,
+ PCM_DRX, PCM_CLK, PCM_FS, MT7531_INT, SMI_MDC, SMI_MDIO,
+ WF0_DIG_RESETB, WF0_CBA_RESETB, WF0_XO_REQ, WF0_TOP_CLK,
+ WF0_TOP_DATA, WF0_HB1, WF0_HB2, WF0_HB3, WF0_HB4, WF0_HB0,
+ WF0_HB0_B, WF0_HB5, WF0_HB6, WF0_HB7, WF0_HB8, WF0_HB9,
+ WF0_HB10, WF1_DIG_RESETB, WF1_CBA_RESETB, WF1_XO_REQ,
+ WF1_TOP_CLK, WF1_TOP_DATA, WF1_HB1, WF1_HB2, WF1_HB3,
+ WF1_HB4, WF1_HB0, WF1_HB0_B, WF1_HB5, WF1_HB6, WF1_HB7,
+ WF1_HB8]
+
+ bias-disable: true
+
+ bias-pull-up: true
+
+ bias-pull-down: true
+
+ input-enable: true
+
+ input-disable: true
+
+ output-enable: true
+
+ output-low: true
+
+ output-high: true
+
+ input-schmitt-enable: true
+
+ input-schmitt-disable: true
+
+ drive-strength:
+ enum: [2, 4, 6, 8, 10, 12, 14, 16]
+
+ mediatek,pull-up-adv:
+ description: |
+ Valid arguments for 'mediatek,pull-up-adv' are '0', '1', '2', '3'
+ Pull up setings for 2 pull resistors, R0 and R1. Valid arguments
+ are described as below:
+ 0: (R1, R0) = (0, 0) which means R1 disabled and R0 disabled.
+ 1: (R1, R0) = (0, 1) which means R1 disabled and R0 enabled.
+ 2: (R1, R0) = (1, 0) which means R1 enabled and R0 disabled.
+ 3: (R1, R0) = (1, 1) which means R1 enabled and R0 enabled.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3]
+
+ mediatek,pull-down-adv:
+ description: |
+ Valid arguments for 'mediatek,pull-up-adv' are '0', '1', '2', '3'
+ Pull down setings for 2 pull resistors, R0 and R1. Valid arguments
+ are described as below:
+ 0: (R1, R0) = (0, 0) which means R1 disabled and R0 disabled.
+ 1: (R1, R0) = (0, 1) which means R1 disabled and R0 enabled.
+ 2: (R1, R0) = (1, 0) which means R1 enabled and R0 disabled.
+ 3: (R1, R0) = (1, 1) which means R1 enabled and R0 enabled.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3]
+
+ required:
+ - pins
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ pio: pinctrl@...1f000 {
+ compatible = "mediatek,mt7986a-pinctrl";
+ reg = <0 0x1001f000 0 0x1000>,
+ <0 0x11c30000 0 0x1000>,
+ <0 0x11c40000 0 0x1000>,
+ <0 0x11e20000 0 0x1000>,
+ <0 0x11e30000 0 0x1000>,
+ <0 0x11f00000 0 0x1000>,
+ <0 0x11f10000 0 0x1000>,
+ <0 0x1000b000 0 0x1000>;
+ reg-names = "gpio", "iocfg_rt", "iocfg_rb", "iocfg_lt",
+ "iocfg_lb", "iocfg_tr", "iocfg_tl", "eint";
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-ranges = <&pio 0 0 100>;
+ interrupt-controller;
+ interrupts = <GIC_SPI 225 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-parent = <&gic>;
+ #interrupt-cells = <2>;
+
+ uart1_pins: uart1-pins {
+ mux {
+ function = "uart";
+ groups = "uart1";
+ };
+ };
+
+ uart2_pins: uart2-pins {
+ mux {
+ function = "uart";
+ groups = "uart2";
+ };
+ };
+
+ };
+ };
--
2.29.2
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