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Date: Fri, 18 Nov 2022 09:11:05 +0800
From: Hal Feng <hal.feng@...rfivetech.com>
To: <linux-riscv@...ts.infradead.org>, <devicetree@...r.kernel.org>,
<linux-gpio@...r.kernel.org>
CC: Conor Dooley <conor@...nel.org>,
Palmer Dabbelt <palmer@...belt.com>,
"Rob Herring" <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Linus Walleij <linus.walleij@...aro.org>,
Emil Renner Berthing <emil.renner.berthing@...onical.com>,
Hal Feng <hal.feng@...rfivetech.com>,
Jianlong Huang <jianlong.huang@...rfivetech.com>,
<linux-kernel@...r.kernel.org>
Subject: [PATCH v2 2/5] dt-bindings: pinctrl: Add StarFive JH7110 sys pinctrl
From: Jianlong Huang <jianlong.huang@...rfivetech.com>
Add pinctrl bindings for StarFive JH7110 SoC sys pinctrl controller.
Signed-off-by: Jianlong Huang <jianlong.huang@...rfivetech.com>
Signed-off-by: Hal Feng <hal.feng@...rfivetech.com>
---
.../pinctrl/starfive,jh7110-sys-pinctrl.yaml | 165 ++++++++++++++++++
1 file changed, 165 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/starfive,jh7110-sys-pinctrl.yaml
diff --git a/Documentation/devicetree/bindings/pinctrl/starfive,jh7110-sys-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/starfive,jh7110-sys-pinctrl.yaml
new file mode 100644
index 000000000000..79623f884a9c
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/starfive,jh7110-sys-pinctrl.yaml
@@ -0,0 +1,165 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/starfive,jh7110-sys-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7110 Sys Pin Controller
+
+description: |
+ Bindings for the JH7110 RISC-V SoC from StarFive Technology Ltd.
+
+ Out of the SoC's many pins only the ones named PAD_GPIO0 to PAD_GPIO63
+ can be multiplexed and have configurable bias, drive strength,
+ schmitt trigger etc.
+ Some peripherals have their I/O go through the 64 "GPIOs". This also
+ includes a number of other UARTs, I2Cs, SPIs, PWMs etc.
+ All these peripherals are connected to all 64 GPIOs such that
+ any GPIO can be set up to be controlled by any of the peripherals.
+
+maintainers:
+ - Jianlong Huang <jianlong.huang@...rfivetech.com>
+
+properties:
+ compatible:
+ const: starfive,jh7110-sys-pinctrl
+
+ reg:
+ maxItems: 1
+
+ reg-names:
+ items:
+ - const: control
+
+ clocks:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+ gpio-controller: true
+
+ "#gpio-cells":
+ const: 2
+
+ interrupts:
+ maxItems: 1
+ description: The GPIO parent interrupt.
+
+ interrupt-controller: true
+
+ "#interrupt-cells":
+ const: 2
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - clocks
+ - gpio-controller
+ - "#gpio-cells"
+ - interrupts
+ - interrupt-controller
+ - "#interrupt-cells"
+
+patternProperties:
+ '-[0-9]+$':
+ type: object
+ patternProperties:
+ '-pins$':
+ type: object
+ 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, system signal configuration, pin groups for
+ vin/vout module, pin voltage, mux functions for output, mux functions
+ for output enable, mux functions for input.
+
+ properties:
+ pinmux:
+ description: |
+ The list of GPIOs and their mux settings that properties in the
+ node apply to. This should be set using the GPIOMUX macro.
+ $ref: "/schemas/pinctrl/pinmux-node.yaml#/properties/pinmux"
+
+ bias-disable: true
+
+ bias-pull-up:
+ type: boolean
+
+ bias-pull-down:
+ type: boolean
+
+ drive-strength:
+ enum: [ 2, 4, 8, 12 ]
+
+ input-enable: true
+
+ input-disable: true
+
+ input-schmitt-enable: true
+
+ input-schmitt-disable: true
+
+ slew-rate:
+ maximum: 1
+
+ additionalProperties: false
+
+ additionalProperties: false
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/starfive-jh7110.h>
+ #include <dt-bindings/reset/starfive-jh7110.h>
+ #include <dt-bindings/pinctrl/pinctrl-starfive-jh7110.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ gpio: gpio@...40000 {
+ compatible = "starfive,jh7110-sys-pinctrl";
+ reg = <0x0 0x13040000 0x0 0x10000>;
+ reg-names = "control";
+ clocks = <&syscrg_clk JH7110_SYSCLK_IOMUX>;
+ resets = <&syscrg_rst JH7110_SYSRST_IOMUX>;
+ interrupts = <86>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ status = "okay";
+
+ uart0_pins: uart0-0 {
+ tx-pins {
+ pinmux = <GPIOMUX(5, GPOUT_SYS_UART0_TX, GPOEN_ENABLE, GPI_NONE)>;
+ bias-disable;
+ drive-strength = <12>;
+ input-disable;
+ input-schmitt-disable;
+ slew-rate = <0>;
+ };
+
+ rx-pins {
+ pinmux = <GPIOMUX(6, GPOUT_LOW, GPOEN_DISABLE, GPI_SYS_UART0_RX)>;
+ bias-pull-up;
+ drive-strength = <2>;
+ input-enable;
+ input-schmitt-enable;
+ slew-rate = <0>;
+ };
+ };
+ };
+
+ uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_pins>;
+ status = "okay";
+ };
+ };
+
+...
--
2.38.1
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