Hi Andrea,
Am 24.11.24 um 11:51 schrieb Andrea della Porta:
Add device tree bindings for the gpio/pin/mux controller that is part of
the RP1 multi function device, and relative entries in MAINTAINERS file.
Signed-off-by: Andrea della Porta <andrea.porta@xxxxxxxx>
---
.../pinctrl/raspberrypi,rp1-gpio.yaml | 193 ++++++++++++++++++
MAINTAINERS | 2 +
2 files changed, 195 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/raspberrypi,rp1-gpio.yaml
diff --git a/Documentation/devicetree/bindings/pinctrl/raspberrypi,rp1-gpio.yaml b/Documentation/devicetree/bindings/pinctrl/raspberrypi,rp1-gpio.yaml
new file mode 100644
index 000000000000..21923d39c1bc
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/raspberrypi,rp1-gpio.yaml
@@ -0,0 +1,193 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/raspberrypi,rp1-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: RaspberryPi RP1 GPIO/Pinconf/Pinmux Controller submodule
+
+maintainers:
+ - Andrea della Porta <andrea.porta@xxxxxxxx>
+
+description:
+ The RP1 chipset is a Multi Function Device containing, among other
+ sub-peripherals, a gpio/pinconf/mux controller whose 54 pins are grouped
+ into 3 banks.
+ It works also as an interrupt controller for those gpios.
+
+properties:
+ compatible:
+ const: raspberrypi,rp1-gpio
+
+ reg:
+ maxItems: 3
+ description: One reg specifier for each one of the 3 pin banks.
+
+ '#gpio-cells':
+ description: The first cell is the pin number and the second cell is used
+ to specify the flags (see include/dt-bindings/gpio/gpio.h).
+ const: 2
+
+ gpio-controller: true
+
+ gpio-ranges:
+ maxItems: 1
+
+ gpio-line-names:
+ maxItems: 54
+
+ interrupts:
+ maxItems: 3
+ description: One interrupt specifier for each one of the 3 pin banks.
+
+ '#interrupt-cells':
+ description:
+ Specifies the Bank number [0, 1, 2] and Flags as defined in
+ include/dt-bindings/interrupt-controller/irq.h.
+ const: 2
+
+ interrupt-controller: true
+
+patternProperties:
+ "-state$":
+ oneOf:
+ - $ref: "#/$defs/raspberrypi-rp1-state"
+ - patternProperties:
+ "-pins$":
+ $ref: "#/$defs/raspberrypi-rp1-state"
+ additionalProperties: false
+
+$defs:
+ raspberrypi-rp1-state:
+ allOf:
+ - $ref: pincfg-node.yaml#
+ - $ref: pinmux-node.yaml#
+
+ description:
+ Pin controller client devices use pin configuration subnodes (children
+ and grandchildren) for desired pin configuration.
+ Client device subnodes use below standard properties.
+
+ properties:
+ pins:
+ description:
+ List of gpio pins affected by the properties specified in this
+ subnode.
+ items:
+ pattern: "^gpio([0-9]|[1-5][0-9])$"
+
+ function:
+ enum: [ alt0, alt1, alt2, alt3, alt4, gpio, alt6, alt7, alt8, none,
+ aaud, dcd0, dpi, dsi0_te_ext, dsi1_te_ext, dsr0, dtr0, gpclk0,
+ gpclk1, gpclk2, gpclk3, gpclk4, gpclk5, i2c0, i2c1, i2c2, i2c3,
+ i2c4, i2c5, i2c6, i2s0, i2s1, i2s2, ir, mic, pcie_clkreq_n,
+ pio, proc_rio, pwm0, pwm1, ri0, sd0, sd1, spi0, spi1, spi2,
+ spi3, spi4, spi5, spi6, spi7, spi8, uart0, uart1, uart2, uart3,
+ uart4, uart5, vbus0, vbus1, vbus2, vbus3 ]
+
+ description:
+ Specify the alternative function to be configured for the specified
+ pins.
+
+ bias-disable: true
+ bias-pull-down: true
+ bias-pull-up: true
+ slew-rate:
+ description: 0 is slow slew rate, 1 is fast slew rate
+ enum: [ 0, 1 ]
+ drive-strength:
+ enum: [ 2, 4, 8, 12 ]
according to the driver in patch 4 the following should also be
supported by the hardware:
input-enable, input-schmitt-enable, output-enable, output-low, output-high
+
+ additionalProperties: false
+
+allOf:
+ - $ref: pinctrl.yaml#
+
+required:
+ - reg
+ - compatible
+ - '#gpio-cells'
+ - gpio-controller
+ - interrupts
+ - '#interrupt-cells'
+ - interrupt-controller
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ rp1 {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ rp1_gpio: pinctrl@c0400d0000 {
+ reg = <0xc0 0x400d0000 0x0 0xc000>,
+ <0xc0 0x400e0000 0x0 0xc000>,
+ <0xc0 0x400f0000 0x0 0xc000>;
+ compatible = "raspberrypi,rp1-gpio";
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupts = <0 IRQ_TYPE_LEVEL_HIGH>,
+ <1 IRQ_TYPE_LEVEL_HIGH>,
+ <2 IRQ_TYPE_LEVEL_HIGH>;
+ gpio-line-names =
+ "ID_SDA", // GPIO0
+ "ID_SCL", // GPIO1
+ "GPIO2", "GPIO3", "GPIO4", "GPIO5", "GPIO6",
+ "GPIO7", "GPIO8", "GPIO9", "GPIO10", "GPIO11",
+ "GPIO12", "GPIO13", "GPIO14", "GPIO15", "GPIO16",
+ "GPIO17", "GPIO18", "GPIO19", "GPIO20", "GPIO21",
+ "GPIO22", "GPIO23", "GPIO24", "GPIO25", "GPIO26",
+ "GPIO27",
+ "PCIE_RP1_WAKE", // GPIO28
+ "FAN_TACH", // GPIO29
+ "HOST_SDA", // GPIO30
+ "HOST_SCL", // GPIO31
+ "ETH_RST_N", // GPIO32
+ "", // GPIO33
+ "CD0_IO0_MICCLK", // GPIO34
+ "CD0_IO0_MICDAT0", // GPIO35
+ "RP1_PCIE_CLKREQ_N", // GPIO36
+ "", // GPIO37
+ "CD0_SDA", // GPIO38
+ "CD0_SCL", // GPIO39
+ "CD1_SDA", // GPIO40
+ "CD1_SCL", // GPIO41
+ "USB_VBUS_EN", // GPIO42
+ "USB_OC_N", // GPIO43
+ "RP1_STAT_LED", // GPIO44
+ "FAN_PWM", // GPIO45
+ "CD1_IO0_MICCLK", // GPIO46
+ "2712_WAKE", // GPIO47
+ "CD1_IO1_MICDAT1", // GPIO48
+ "EN_MAX_USB_CUR", // GPIO49
+ "", // GPIO50
+ "", // GPIO51
+ "", // GPIO52
+ ""; // GPIO53
+
+ rp1-i2s0-default-state {
+ function = "i2s0";
+ pins = "gpio18", "gpio19", "gpio20", "gpio21";
+ bias-disable;
+ };
+
+ rp1-uart0-default-state {
+ txd-pins {
+ function = "uart0";
+ pins = "gpio14";
+ bias-disable;
+ };
+
+ rxd-pins {
+ function = "uart0";
+ pins = "gpio15";
+ bias-pull-up;
+ };
+ };
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 75a66e3e34c9..c55d12550246 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19384,7 +19384,9 @@ RASPBERRY PI RP1 PCI DRIVER
M: Andrea della Porta <andrea.porta@xxxxxxxx>
S: Maintained
F: Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml
+F: Documentation/devicetree/bindings/pinctrl/raspberrypi,rp1-gpio.yaml
F: include/dt-bindings/clock/rp1.h
+F: include/dt-bindings/misc/rp1.h
RC-CORE / LIRC FRAMEWORK
M: Sean Young <sean@xxxxxxxx>
