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Date: Wed, 16 Jun 2021 14:26:39 +0100
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>,
Rob Herring <robh+dt@...nel.org>,
Linus Walleij <linus.walleij@...aro.org>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-renesas-soc@...r.kernel.org, linux-gpio@...r.kernel.org,
Prabhakar <prabhakar.csengg@...il.com>,
Biju Das <biju.das.jz@...renesas.com>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH 1/3] dt-bindings: pinctrl: renesas,rzg2l-pinctrl: Add DT bindings for RZ/G2L pinctrl
Add device tree binding documentation and header file for Renesas
RZ/G2L pinctrl.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Reviewed-by: Biju Das <biju.das.jz@...renesas.com>
---
.../pinctrl/renesas,rzg2l-pinctrl.yaml | 121 ++++++++++++++++++
include/dt-bindings/pinctrl/pinctrl-rzg2l.h | 16 +++
2 files changed, 137 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
create mode 100644 include/dt-bindings/pinctrl/pinctrl-rzg2l.h
diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
new file mode 100644
index 000000000000..e8ab5a0a46b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
@@ -0,0 +1,121 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/renesas,rzg2l-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas RZ/G2L combined Pin and GPIO controller
+
+maintainers:
+ - Geert Uytterhoeven <geert+renesas@...der.be>
+
+description:
+ The Renesas SoCs of the RZ/G2L series feature a combined Pin and GPIO
+ controller.
+ Pin multiplexing and GPIO configuration is performed on a per-pin basis.
+ Each port features up to 8 pins, each of them configurable for GPIO function
+ (port mode) or in alternate function mode.
+ Up to 8 different alternate function modes exist for each single pin.
+
+properties:
+ compatible:
+ enum:
+ - renesas,r9a07g044-pinctrl # RZ/G2{L,LC}
+
+ reg:
+ maxItems: 1
+
+ gpio-controller: true
+
+ '#gpio-cells':
+ const: 2
+ description:
+ The first cell contains the global GPIO port index, constructed using the
+ RZG2L_GPIO() helper macro in <dt-bindings/pinctrl/pinctrl-rzg2l.h> and the
+ second cell represents consumer flag as mentioned in ../gpio/gpio.txt
+ E.g. "RZG2L_GPIO(39, 1)" for P39_1.
+
+ gpio-ranges:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+additionalProperties:
+ anyOf:
+ - type: object
+ 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:
+ phandle: true
+ function: true
+ groups: true
+ pins: true
+ bias-disable: true
+ bias-pull-down: true
+ bias-pull-up: true
+ drive-strength:
+ enum: [ 2, 4, 8, 12 ]
+ power-source:
+ enum: [ 1800, 2500, 3300 ]
+ slew-rate: true
+ gpio-hog: true
+ gpios: true
+ input-enable: true
+ output-high: true
+ output-low: true
+ line-name: true
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - gpio-controller
+ - '#gpio-cells'
+ - gpio-ranges
+ - clocks
+ - power-domains
+ - resets
+
+examples:
+ - |
+ #include <dt-bindings/pinctrl/pinctrl-rzg2l.h>
+ #include <dt-bindings/clock/r9a07g044-cpg.h>
+
+ pinctrl: pinctrl@...30000 {
+ compatible = "renesas,r9a07g044l-pinctrl";
+ reg = <0x11030000 0x10000>;
+
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-ranges = <&pinctrl 0 0 392>;
+ clocks = <&cpg CPG_MOD R9A07G044_CLK_GPIO>;
+ resets = <&cpg R9A07G044_CLK_GPIO>;
+ power-domains = <&cpg>;
+
+ scif0_pins: scif0 {
+ groups = "scif0_data";
+ function = "scif0";
+ };
+
+ sd1-pwr-en-hog {
+ gpio-hog;
+ gpios = <RZG2L_GPIO(39, 2) 0>;
+ output-high;
+ line-name = "sd1_pwr_en";
+ };
+ };
diff --git a/include/dt-bindings/pinctrl/pinctrl-rzg2l.h b/include/dt-bindings/pinctrl/pinctrl-rzg2l.h
new file mode 100644
index 000000000000..d285d9e8c60a
--- /dev/null
+++ b/include/dt-bindings/pinctrl/pinctrl-rzg2l.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * This header provides constants for Renesas RZ/G2{L,LC} pinctrl bindings.
+ *
+ * Copyright (C) 2021 Renesas Electronics Corp.
+ *
+ */
+
+#ifndef __DT_BINDINGS_PINCTRL_RZG2L_H
+#define __DT_BINDINGS_PINCTRL_RZG2L_H
+
+#define RZG2L_PINS_PER_PORT 8
+
+#define RZG2L_GPIO(port, pos) ((port) * RZG2L_PINS_PER_PORT + (pos))
+
+#endif /* __DT_BINDINGS_PINCTRL_RZG2L_H */
--
2.17.1
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