Merge tag 'arm-soc/for-6.16/devicetree' of https://github.com/Broadcom/stblinux into soc/dt

This pull request contains Broadcom ARM-based SoC Device Tree changes
for 6.16, please pull the following:

- Arthur adds a pinctrl node for BCM21664 and updates BCM23550 to use
  it, he also drops the DTS file for the BCM59056 PMU chip and leaving
  that board level DTS files

- Stefan documents and adds support for the Raspberry Pi 2 2nd revision.

* tag 'arm-soc/for-6.16/devicetree' of https://github.com/Broadcom/stblinux:
  arm64: dts: bcm: Add reference to RPi 2 (2nd rev)
  ARM: dts: bcm: Add support for Raspberry Pi 2 (2nd rev)
  dt-bindings: arm: bcm2835: Add Raspberry Pi 2 (2nd rev)
  ARM: dts: Drop DTS for BCM59056 PMU
  ARM: dts: bcm2166x: Add bcm2166x-pinctrl DTSI
  ARM: dts: bcm2166x-common: Add pinctrl node

Link: https://lore.kernel.org/r/20250505165810.1948927-1-florian.fainelli@broadcom.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml

@@ -52,6 +52,7 @@ properties:
       - description: BCM2837 based Boards
         items:
           - enum:
+              - raspberrypi,2-model-b-rev2
               - raspberrypi,3-model-a-plus
               - raspberrypi,3-model-b
               - raspberrypi,3-model-b-plus

arch/arm/boot/dts/broadcom/Makefile

@@ -7,6 +7,7 @@ DTC_FLAGS_bcm2835-rpi-b-plus := -@
 DTC_FLAGS_bcm2835-rpi-a-plus := -@
 DTC_FLAGS_bcm2835-rpi-cm1-io1 := -@
 DTC_FLAGS_bcm2836-rpi-2-b := -@
+DTC_FLAGS_bcm2837-rpi-2-b := -@
 DTC_FLAGS_bcm2837-rpi-3-a-plus := -@
 DTC_FLAGS_bcm2837-rpi-3-b := -@
 DTC_FLAGS_bcm2837-rpi-3-b-plus := -@
@@ -25,6 +26,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
 	bcm2835-rpi-a-plus.dtb \
 	bcm2835-rpi-cm1-io1.dtb \
 	bcm2836-rpi-2-b.dtb \
+	bcm2837-rpi-2-b.dtb \
 	bcm2837-rpi-3-a-plus.dtb \
 	bcm2837-rpi-3-b.dtb \
 	bcm2837-rpi-3-b-plus.dtb \

arch/arm/boot/dts/broadcom/bcm2166x-common.dtsi

@@ -46,6 +46,11 @@ gpio: gpio@1003000 {
 			interrupt-controller;
 		};
 
+		pinctrl: pinctrl@1004800 {
+			compatible = "brcm,bcm21664-pinctrl";
+			reg = <0x01004800 0x7f4>;
+		};
+
 		timer@1006000 {
 			compatible = "brcm,kona-timer";
 			reg = <0x01006000 0x1c>;
@@ -332,3 +337,5 @@ master_ccu: master_ccu@3f001000 {
 		};
 	};
 };
+
+#include "bcm2166x-pinctrl.dtsi"

arch/arm/boot/dts/broadcom/bcm2166x-pinctrl.dtsi

@@ -0,0 +1,297 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Common pinmux configrations for BCM2166x (BCM21664/BCM23550).
+ *
+ * Copyright (C) 2025 Artur Weber <aweber.kernel@gmail.com>
+ */
+
+&pinctrl {
+	/* BSC1 */
+	bsc1_pins: bsc1-pins {
+		bsc1clk-grp0 {
+			pins = "bsc1clk";
+			function = "alt1"; /* BSC1CLK */
+		};
+
+		bsc1dat-grp0 {
+			pins = "bsc1dat";
+			function = "alt1"; /* BSC1DAT */
+		};
+	};
+
+	/* BSC2 */
+	bsc2_pins: bsc2-pins {
+		bsc2clk-grp0 {
+			pins = "gpio16";
+			function = "alt2"; /* BSC2CLK */
+		};
+
+		bsc2dat-grp0 {
+			pins = "gpio17";
+			function = "alt2"; /* BSC2DAT */
+		};
+	};
+
+	/* BSC3 */
+	bsc3_pins: bsc3-pins {
+		bsc3clk-grp0 {
+			pins = "lcdscl";
+			function = "alt1"; /* BSC3_CLK */
+		};
+
+		bsc3dat-grp0 {
+			pins = "lcdsda";
+			function = "alt1"; /* BSC3_SDA */
+		};
+	};
+
+	/* BSC4 */
+	bsc4_pins: bsc4-pins {
+		bsc4clk-grp0 {
+			pins = "lcdres";
+			function = "alt1"; /* BSC4_CLK */
+		};
+
+		bsc4dat-grp0 {
+			pins = "lcdte";
+			function = "alt1"; /* BSC4_SDA */
+		};
+	};
+
+	/* PMBSC */
+	pmbsc_pins: pmbsc-pins {
+		pmbscclk-grp0 {
+			pins = "pmbscclk";
+			function = "alt1"; /* PMBSCCLK */
+		};
+
+		pmbscdat-grp0 {
+			pins = "pmbscdat";
+			function = "alt1"; /* PMBSCDAT */
+		};
+	};
+
+	/* SD */
+	sd_width1_pins: sd-width1-pins {
+		sdck-grp0 {
+			pins = "sdck";
+			function = "alt1"; /* SDCK */
+			bias-disable;
+		};
+
+		sdcmd-grp0 {
+			pins = "sdcmd";
+			function = "alt1"; /* SDCMD */
+			bias-pull-up;
+		};
+
+		sddat-grp0 {
+			pins = "sddat0";
+			function = "alt1"; /* SDDATx */
+			bias-pull-up;
+		};
+	};
+
+	sd_width4_pins: sd-width4-pins {
+		sdck-grp0 {
+			pins = "sdck";
+			function = "alt1"; /* SDCK */
+			bias-disable;
+		};
+
+		sdcmd-grp0 {
+			pins = "sdcmd";
+			function = "alt1"; /* SDCMD */
+			bias-pull-up;
+		};
+
+		sddat-grp0 {
+			pins = "sddat0", "sddat1", "sddat2", "sddat3";
+			function = "alt1"; /* SDDATx */
+			bias-pull-up;
+		};
+	};
+
+	/* SD1 */
+	sd1_width1_pins: sd1-width1-pins {
+		sd1ck-grp0 {
+			pins = "mmc1dat7";
+			function = "alt6"; /* SD1CK */
+			bias-disable;
+		};
+
+		sd1cmd-grp0 {
+			pins = "spi0txd";
+			function = "alt2"; /* SD1CMD */
+			bias-pull-up;
+		};
+
+		sd1dat0-grp0 {
+			pins = "mmc1dat5";
+			function = "alt6"; /* SD1DAT0 */
+			bias-pull-up;
+		};
+	};
+
+	sd1_width4_pins: sd1-width4-pins {
+		sd1ck-grp0 {
+			pins = "mmc1dat7";
+			function = "alt6"; /* SD1CK */
+			bias-disable;
+		};
+
+		sd1cmd-grp0 {
+			pins = "spi0txd";
+			function = "alt2"; /* SD1CMD */
+			bias-pull-up;
+		};
+
+		sd1dat0-grp0 {
+			pins = "mmc1dat5";
+			function = "alt6"; /* SD1DAT0 */
+			bias-pull-up;
+		};
+
+		sd1dat1-grp0 {
+			pins = "gpio93";
+			function = "alt1"; /* SD1DAT1 */
+			bias-pull-up;
+		};
+
+		sd1dat2-grp0 {
+			pins = "gpio94";
+			function = "alt1"; /* SD1DAT2 */
+			bias-pull-up;
+		};
+
+		sd1dat3-grp0 {
+			pins = "mmc1dat3";
+			function = "alt6"; /* SD1DAT3 */
+			bias-pull-up;
+		};
+	};
+
+	/* MMC0 */
+	mmc0_width1_pins: mmc0-width1-pins {
+		mmc0ck-grp0 {
+			pins = "mmc0ck";
+			function = "alt1"; /* MMC0CK */
+			bias-disable;
+		};
+
+		mmc0cmd-grp0 {
+			pins = "mmc0cmd";
+			function = "alt1"; /* MMC0CMD */
+			bias-pull-up;
+		};
+
+		mmc0dat-grp0 {
+			pins = "mmc0dat0";
+			function = "alt1"; /* MMC0DATx */
+			bias-pull-up;
+		};
+	};
+
+	mmc0_width4_pins: mmc0-width4-pins {
+		mmc0ck-grp0 {
+			pins = "mmc0ck";
+			function = "alt1"; /* MMC0CK */
+			bias-disable;
+		};
+
+		mmc0cmd-grp0 {
+			pins = "mmc0cmd";
+			function = "alt1"; /* MMC0CMD */
+			bias-pull-up;
+		};
+
+		mmc0dat-grp0 {
+			pins = "mmc0dat0", "mmc0dat1", "mmc0dat2", "mmc0dat3";
+			function = "alt1"; /* MMC0DATx */
+			bias-pull-up;
+		};
+	};
+
+	mmc0_width8_pins: mmc0-width8-pins {
+		mmc0ck-grp0 {
+			pins = "mmc0ck";
+			function = "alt1"; /* MMC0CK */
+			bias-disable;
+		};
+
+		mmc0cmd-grp0 {
+			pins = "mmc0cmd";
+			function = "alt1"; /* MMC0CMD */
+			bias-pull-up;
+		};
+
+		mmc0dat-grp0 {
+			pins = "mmc0dat0", "mmc0dat1", "mmc0dat2", "mmc0dat3",
+			       "mmc0dat4", "mmc0dat5", "mmc0dat6", "mmc0dat7";
+			function = "alt1"; /* MMC0DATx */
+			bias-pull-up;
+		};
+	};
+
+	/* MMC1 */
+	mmc1_width1_pins: mmc1-width1-pins {
+		mmc1ck-grp0 {
+			pins = "mmc1ck";
+			function = "alt1"; /* MMC1CK */
+			bias-disable;
+		};
+
+		mmc1cmd-grp0 {
+			pins = "mmc1cmd";
+			function = "alt1"; /* MMC1CMD */
+			bias-pull-up;
+		};
+
+		mmc1dat-grp0 {
+			pins = "mmc1dat0";
+			function = "alt1"; /* MMC1DATx */
+			bias-pull-up;
+		};
+	};
+
+	mmc1_width4_pins: mmc1-width4-pins {
+		mmc1ck-grp0 {
+			pins = "mmc1ck";
+			function = "alt1"; /* MMC1CK */
+			bias-disable;
+		};
+
+		mmc1cmd-grp0 {
+			pins = "mmc1cmd";
+			function = "alt1"; /* MMC1CMD */
+			bias-pull-up;
+		};
+
+		mmc1dat-grp0 {
+			pins = "mmc1dat0", "mmc1dat1", "mmc1dat2", "mmc1dat3";
+			function = "alt1"; /* MMC1DATx */
+			bias-pull-up;
+		};
+	};
+
+	mmc1_width8_pins: mmc1-width8-pins {
+		mmc1ck-grp0 {
+			pins = "mmc1ck";
+			function = "alt1"; /* MMC1CK */
+			bias-disable;
+		};
+
+		mmc1cmd-grp0 {
+			pins = "mmc1cmd";
+			function = "alt1"; /* MMC1CMD */
+			bias-pull-up;
+		};
+
+		mmc1dat-grp0 {
+			pins = "mmc1dat0", "mmc1dat1", "mmc1dat2", "mmc1dat3",
+			       "mmc1dat4", "mmc1dat5", "mmc1dat6", "mmc1dat7";
+			function = "alt1"; /* MMC1DATx */
+			bias-pull-up;
+		};
+	};
+};

arch/arm/boot/dts/broadcom/bcm28155-ap.dts

@@ -37,7 +37,39 @@ &pmu_bsc {
 	status = "okay";
 
 	pmu: pmu@8 {
+		compatible = "brcm,bcm59056";
+		interrupts = <GIC_SPI 215 IRQ_TYPE_LEVEL_HIGH>;
 		reg = <0x08>;
+
+		regulators {
+			camldo1_reg: camldo1 {
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			sdldo_reg: sdldo {
+				regulator-min-microvolt = <3000000>;
+				regulator-max-microvolt = <3000000>;
+			};
+
+			sdxldo_reg: sdxldo {
+				regulator-min-microvolt = <2700000>;
+				regulator-max-microvolt = <3300000>;
+			};
+
+			usbldo_reg: usbldo {
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			iosr1_reg: iosr1 {
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+			};
+		};
 	};
 };
 
@@ -74,39 +106,3 @@ &usbotg {
 &usbphy {
 	status = "okay";
 };
-
-#include "bcm59056.dtsi"
-
-&pmu {
-	compatible = "brcm,bcm59056";
-	interrupts = <GIC_SPI 215 IRQ_TYPE_LEVEL_HIGH>;
-	regulators {
-		camldo1_reg: camldo1 {
-			regulator-min-microvolt = <3300000>;
-			regulator-max-microvolt = <3300000>;
-			regulator-always-on;
-		};
-
-		sdldo_reg: sdldo {
-			regulator-min-microvolt = <3000000>;
-			regulator-max-microvolt = <3000000>;
-		};
-
-		sdxldo_reg: sdxldo {
-			regulator-min-microvolt = <2700000>;
-			regulator-max-microvolt = <3300000>;
-		};
-
-		usbldo_reg: usbldo {
-			regulator-min-microvolt = <3300000>;
-			regulator-max-microvolt = <3300000>;
-			regulator-always-on;
-		};
-
-		iosr1_reg: iosr1 {
-			regulator-min-microvolt = <1800000>;
-			regulator-max-microvolt = <1800000>;
-			regulator-always-on;
-		};
-	};
-};

arch/arm/boot/dts/broadcom/bcm2837-rpi-2-b.dts

@@ -0,0 +1,130 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+#include "bcm2837.dtsi"
+#include "bcm2836-rpi.dtsi"
+#include "bcm283x-rpi-led-deprecated.dtsi"
+#include "bcm283x-rpi-smsc9514.dtsi"
+#include "bcm283x-rpi-usb-host.dtsi"
+
+/ {
+	compatible = "raspberrypi,2-model-b-rev2", "brcm,bcm2837";
+	model = "Raspberry Pi 2 Model B rev 1.2";
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0 0x40000000>;
+	};
+};
+
+&gpio {
+	/*
+	 * Taken from rpi_SCH_2b_1p2_reduced.pdf and
+	 * the official GPU firmware DT blob.
+	 *
+	 * Legend:
+	 * "FOO" = GPIO line named "FOO" on the schematic
+	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
+	 */
+	gpio-line-names = "ID_SDA",
+			  "ID_SCL",
+			  "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",
+			  "SDA0",
+			  "SCL0",
+			  "", /* GPIO30 */
+			  "LAN_RUN",
+			  "CAM_GPIO1",
+			  "", /* GPIO33 */
+			  "", /* GPIO34 */
+			  "PWR_LOW_N",
+			  "", /* GPIO36 */
+			  "", /* GPIO37 */
+			  "USB_LIMIT",
+			  "", /* GPIO39 */
+			  "PWM0_OUT",
+			  "CAM_GPIO0",
+			  "SMPS_SCL",
+			  "SMPS_SDA",
+			  "ETH_CLK",
+			  "PWM1_OUT",
+			  "HDMI_HPD_N",
+			  "STATUS_LED",
+			  /* Used by SD Card */
+			  "SD_CLK_R",
+			  "SD_CMD_R",
+			  "SD_DATA0_R",
+			  "SD_DATA1_R",
+			  "SD_DATA2_R",
+			  "SD_DATA3_R";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&gpioout &alt0 &i2s_alt0>;
+
+	/* I2S interface */
+	i2s_alt0: i2s_alt0 {
+		brcm,pins = <18 19 20 21>;
+		brcm,function = <BCM2835_FSEL_ALT0>;
+	};
+};
+
+&hdmi {
+	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+	power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
+	status = "okay";
+};
+
+&led_act {
+	gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
+};
+
+&leds {
+	led-pwr {
+		label = "PWR";
+		gpios = <&gpio 35 GPIO_ACTIVE_HIGH>;
+		default-state = "keep";
+		linux,default-trigger = "default-on";
+	};
+};
+
+&pwm {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio45>;
+	status = "okay";
+};
+
+&sdhost {
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdhost_gpio48>;
+	bus-width = <4>;
+	status = "okay";
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_gpio14>;
+	status = "okay";
+};

arch/arm/boot/dts/broadcom/bcm59056.dtsi

@@ -1,91 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
-* Copyright 2014 Linaro Limited
-* Author: Matt Porter <mporter@linaro.org>
-*/
-
-&pmu {
-	compatible = "brcm,bcm59056";
-	regulators {
-		rfldo_reg: rfldo {
-		};
-
-		camldo1_reg: camldo1 {
-		};
-
-		camldo2_reg: camldo2 {
-		};
-
-		simldo1_reg: simldo1 {
-		};
-
-		simldo2_reg: simldo2 {
-		};
-
-		sdldo_reg: sdldo {
-		};
-
-		sdxldo_reg: sdxldo {
-		};
-
-		mmcldo1_reg: mmcldo1 {
-		};
-
-		mmcldo2_reg: mmcldo2 {
-		};
-
-		audldo_reg: audldo {
-		};
-
-		micldo_reg: micldo {
-		};
-
-		usbldo_reg: usbldo {
-		};
-
-		vibldo_reg: vibldo {
-		};
-
-		csr_reg: csr {
-		};
-
-		iosr1_reg: iosr1 {
-		};
-
-		iosr2_reg: iosr2 {
-		};
-
-		msr_reg: msr {
-		};
-
-		sdsr1_reg: sdsr1 {
-		};
-
-		sdsr2_reg: sdsr2 {
-		};
-
-		vsr_reg: vsr {
-		};
-
-		gpldo1_reg: gpldo1 {
-		};
-
-		gpldo2_reg: gpldo2 {
-		};
-
-		gpldo3_reg: gpldo3 {
-		};
-
-		gpldo4_reg: gpldo4 {
-		};
-
-		gpldo5_reg: gpldo5 {
-		};
-
-		gpldo6_reg: gpldo6 {
-		};
-
-		vbus_reg: vbus {
-		};
-	};
-};

arch/arm64/boot/dts/broadcom/Makefile

@@ -8,6 +8,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rpi-400.dtb \
 			      bcm2711-rpi-cm4-io.dtb \
 			      bcm2712-rpi-5-b.dtb \
 			      bcm2712-d-rpi-5-b.dtb \
+			      bcm2837-rpi-2-b.dtb \
 			      bcm2837-rpi-3-a-plus.dtb \
 			      bcm2837-rpi-3-b.dtb \
 			      bcm2837-rpi-3-b-plus.dtb \

arch/arm64/boot/dts/broadcom/bcm2837-rpi-2-b.dts

@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "arm/broadcom/bcm2837-rpi-2-b.dts"