linux-kernel - [PATCH 1/6] dt-bindings: pinctrl: Add support for BCM2712 pin controller

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Message-ID: <2d1272cad92ad618297a6683e9264e31b8f2df73.1713036964.git.andrea.porta@suse.com>
Date: Sun, 14 Apr 2024 00:14:23 +0200
From: Andrea della Porta <andrea.porta@...e.com>
To: Ulf Hansson <ulf.hansson@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Kamal Dasu <kamal.dasu@...adcom.com>,
	Al Cooper <alcooperx@...il.com>,
	della Porta <andrea.porta@...e.com>,
	linux-mmc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-gpio@...r.kernel.org,
	Jonathan Bell <jonathan@...pberrypi.com>,
	Phil Elwell <phil@...pberrypi.com>
Subject: [PATCH 1/6] dt-bindings: pinctrl: Add support for BCM2712 pin controller

Signed-off-by: Andrea della Porta <andrea.porta@...e.com>
---
 .../pinctrl/brcm,bcm2712-pinctrl.yaml         | 99 +++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/brcm,bcm2712-pinctrl.yaml

diff --git a/Documentation/devicetree/bindings/pinctrl/brcm,bcm2712-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/brcm,bcm2712-pinctrl.yaml
new file mode 100644
index 000000000000..2908dfe99f3e
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/brcm,bcm2712-pinctrl.yaml
@@ -0,0 +1,99 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/brcm,bcm2712-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom BCM2712 pin controller
+
+maintainers:
+  - Andrea della Porta <andrea.porta@...e.com>
+
+description:
+  Bindings for Broadcom's BCM2712 memory-mapped pin controller.
+
+properties:
+  compatible:
+    enum:
+      - brcm,bcm2712-pinctrl
+      - brcm,bcm2712-aon-pinctrl
+      - brcm,bcm2712c0-pinctrl
+      - brcm,bcm2712c0-aon-pinctrl
+      - brcm,bcm2712d0-pinctrl
+      - brcm,bcm2712d0-aon-pinctrl
+
+  reg:
+    items:
+      - description: pin control registers
+
+allOf:
+  - $ref: pinctrl.yaml#
+
+required:
+  - compatible
+  - reg
+
+additionalProperties:
+  anyOf:
+    - type: object  
+      allOf:
+        - $ref: pincfg-node.yaml#
+        - $ref: pinmux-node.yaml#
+
+      properties:
+        function: 
+          enum: [ gpio, alt1, alt2, alt3, alt4, alt5, alt6, alt7, alt8,
+                 aon_cpu_standbyb, aon_fp_4sec_resetb, aon_gpclk, aon_pwm,
+                 arm_jtag, aud_fs_clk0, avs_pmu_bsc, bsc_m0, bsc_m1, bsc_m2,
+                 bsc_m3, clk_observe, ctl_hdmi_5v, enet0, enet0_mii,
+                 enet0_rgmii, ext_sc_clk, fl0, fl1, gpclk0, gpclk1, gpclk2,
+                 hdmi_tx0_auto_i2c, hdmi_tx0_bsc, hdmi_tx1_auto_i2c,
+                 hdmi_tx1_bsc, i2s_in, i2s_out, ir_in, mtsif, mtsif_alt,
+                 mtsif_alt1, pdm, pkt, pm_led_out, sc0, sd0, sd2, sd_card_a,
+                 sd_card_b, sd_card_c, sd_card_d, sd_card_e, sd_card_f,
+                 sd_card_g, spdif_out, spi_m, spi_s, sr_edm_sense, te0, te1,
+                 tsio, uart0, uart1, uart2, usb_pwr, usb_vbus, uui, vc_i2c0,
+                 vc_i2c3, vc_i2c4, vc_i2c5, vc_i2csl, vc_pcm, vc_pwm0,
+                 vc_pwm1, vc_spi0, vc_spi3, vc_spi4, vc_spi5, vc_uart0,
+                 vc_uart2, vc_uart3, vc_uart4 ]
+
+        pins:
+          items:
+            pattern: "^((aon_)?s?gpio[0-6]?[0-9])|(emmc_(clk|cmd|dat[0-7]|ds))$"
+
+        bias-disable: true
+        bias-pull-down: true
+        bias-pull-up: true
+      additionalProperties: false
+
+    - type: object
+      additionalProperties:
+        $ref: "#/additionalProperties/anyOf/0"
+
+examples:
+  - |
+    pinctrl: pinctrl@...04100 {
+      compatible = "brcm,bcm2712-pinctrl";
+        reg = <0x7d504100 0x30>;
+
+        uarta_24_pins: uarta_24_pins {
+          pin_rts {
+            function = "uart0";
+            pins = "gpio24";
+            bias-disable;
+        };
+
+        pin_cts {
+            function = "uart0";
+            pins = "gpio25";
+            bias-pull-up;
+        };
+      };
+
+      spi10_gpio2: spi10_gpio2 {
+        function = "vc_spi0";
+        pins = "gpio2", "gpio3", "gpio4";
+        bias-disable;
+      };
+    };
+...
-- 
2.35.3