[PATCH RESEND v2 0/2] ARM: dts: bcm-mobile: Split out nodes used by both BCM21664 and BCM23550

[PATCH RESEND v2 0/2] ARM: dts: bcm-mobile: Split out nodes used by both BCM21664 and BCM23550

[Artur Weber]

The BCM21664 and BCM23550 are nearly identical to each other in terms
of register layout. This was verified against a downstream kernel[1] -
Broadcom's kernel has "RDB" directories which includes headers with
the full register maps for the included hardware. Running:

  diff --recursive arch/arm/mach-{hawaii,java}/include/mach/rdb

reveals that the differences are minuscule - some things related to
ISP and H264 decoding. Most of the other differences are related to
the different CPUs in the two chipsets - the BCM21664 has 2x Cortex-A9
cores, and the BCM23550 has 4x Cortex-A7 cores.

In mainline, most drivers are also re-used between the two.

To make development for both platforms easier, split out the common
nodes into a separate DTSI, bcm2166x-common.dtsi. This only leaves
the device-specific nodes - so, CPU and related things - in the SoC-
specific DTSIs (bcm21664.dtsi and bcm23550.dtsi).

The new DTSI is based off the bcm23550.dtsi, with its split into
busses. Since it's pretty much 99% identical, I kept the licensing
of the original file (BSD 3-clause). The license for the bcm21664.dtsi
file remains GPL 2.0 as it originally was.

make CHECK_DTBS=y on bcm21664-garnet.dtb and bcm23550-sparrow.dtb
seem to pass fine for me (thanks to Stanislav Jakubek for converting
the bindings to YAML format!).

[1] https://github.com/knuxdroid/android_kernel_samsung_baffinlite

Signed-off-by: Artur Weber <aweber.kernel@gmail.com>
---
Changes in v2:
 - Renamed bcm21664-common.dtsi to bcm2166x-common.dtsi
 - Dropped model/compatible from SoC DTSIs
 - Moved apps bus peripherals in SoC DTSIs under "&apps"
 - Re-added SoC-specific compatibles into SoC DTSIs
 - Fixed warning regarding address in GIC node name
 - Link to v1: https://lore.kernel.org/lkml/20240605-bcm21664-common-v1-0-6386e9141eb6@gmail.com/

---
Artur Weber (2):
      ARM: dts: broadcom: bcm21664: Move chosen node into Garnet DTS
      ARM: dts: bcm-mobile: Split out nodes used by both BCM21664 and BCM23550

 arch/arm/boot/dts/broadcom/bcm21664-garnet.dts     |   4 +
 arch/arm/boot/dts/broadcom/bcm21664.dtsi           | 342 ++-----------------
 .../{bcm23550.dtsi => bcm2166x-common.dtsi}        | 111 +------
 arch/arm/boot/dts/broadcom/bcm23550.dtsi           | 370 ++-------------------
 4 files changed, 77 insertions(+), 750 deletions(-)
---
base-commit: a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6
change-id: 20240528-bcm21664-common-14064864a4a7

Best regards,
-- 
Artur Weber <aweber.kernel@gmail.com>

[PATCH RESEND v2 1/2] ARM: dts: broadcom: bcm21664: Move chosen node into Garnet DTS

[Artur Weber]

The serial console settings in the chosen node are device-specific,
not SoC-specific. Move the chosen node out of bcm21664.dtsi and into
the only DTS that uses it, bcm21664-garnet.dts.

Signed-off-by: Artur Weber <aweber.kernel@gmail.com>
---
 arch/arm/boot/dts/broadcom/bcm21664-garnet.dts | 4 ++++
 arch/arm/boot/dts/broadcom/bcm21664.dtsi       | 4 ----
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/broadcom/bcm21664-garnet.dts b/arch/arm/boot/dts/broadcom/bcm21664-garnet.dts
index 8789fae178bf..4f8ddc1b3ab7 100644
--- a/arch/arm/boot/dts/broadcom/bcm21664-garnet.dts
+++ b/arch/arm/boot/dts/broadcom/bcm21664-garnet.dts
@@ -11,6 +11,10 @@ / {
 	model = "BCM21664 Garnet board";
 	compatible = "brcm,bcm21664-garnet", "brcm,bcm21664";
 
+	chosen {
+		bootargs = "console=ttyS0,115200n8";
+	};
+
 	memory@80000000 {
 		device_type = "memory";
 		reg = <0x80000000 0x40000000>; /* 1 GB */
diff --git a/arch/arm/boot/dts/broadcom/bcm21664.dtsi b/arch/arm/boot/dts/broadcom/bcm21664.dtsi
index fa73600e883e..c1ad5123bad4 100644
--- a/arch/arm/boot/dts/broadcom/bcm21664.dtsi
+++ b/arch/arm/boot/dts/broadcom/bcm21664.dtsi
@@ -12,10 +12,6 @@ / {
 	compatible = "brcm,bcm21664";
 	interrupt-parent = <&gic>;
 
-	chosen {
-		bootargs = "console=ttyS0,115200n8";
-	};
-
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;

-- 
2.45.2

[PATCH RESEND v2 2/2] ARM: dts: bcm-mobile: Split out nodes used by both BCM21664 and BCM23550

[Artur Weber]

The BCM21664 is nearly identical in terms of register layout to the
BCM23550. Move the shared nodes into a new file, bcm2166x-common.dtsi,
and make both bcm21664.dtsi and bcm23550.dtsi include it. This new
common file is based on the former bcm23550.dtsi file, and inherits
its licensing.

Signed-off-by: Artur Weber <aweber.kernel@gmail.com>
---
As for other uses - the BCM21654 (not in mainline) appears to be fairly
similar in a few ways to the BCM21664 as well; the BCM21855/BCM11531 has
a similar layout of registers, but there are much more differences.
We could potentially further split more nodes into a single common
Broadcom Kona DTSI, then make sub-DTSIs to just change the compatibles,
but that's a task for another patch.
---
Changes in v2:
- Renamed bcm21664-common.dtsi to bcm2166x-common.dtsi
- Dropped model/compatible from SoC DTSIs
- Moved apps bus peripherals in SoC DTSIs under "&apps"
- Re-added SoC-specific compatibles into SoC DTSIs
- Fixed warning regarding address in GIC node name
---
 arch/arm/boot/dts/broadcom/bcm21664.dtsi           | 338 ++-----------------
 .../{bcm23550.dtsi => bcm2166x-common.dtsi}        | 111 +------
 arch/arm/boot/dts/broadcom/bcm23550.dtsi           | 370 ++-------------------
 3 files changed, 73 insertions(+), 746 deletions(-)

diff --git a/arch/arm/boot/dts/broadcom/bcm21664.dtsi b/arch/arm/boot/dts/broadcom/bcm21664.dtsi
index c1ad5123bad4..f0d0300079b6 100644
--- a/arch/arm/boot/dts/broadcom/bcm21664.dtsi
+++ b/arch/arm/boot/dts/broadcom/bcm21664.dtsi
@@ -1,15 +1,9 @@
 // SPDX-License-Identifier: GPL-2.0-only
 // Copyright (C) 2014 Broadcom Corporation
 
-#include <dt-bindings/clock/bcm21664.h>
-#include <dt-bindings/interrupt-controller/arm-gic.h>
-#include <dt-bindings/interrupt-controller/irq.h>
+#include "bcm2166x-common.dtsi"
 
 / {
-	#address-cells = <1>;
-	#size-cells = <1>;
-	model = "BCM21664 SoC";
-	compatible = "brcm,bcm21664";
 	interrupt-parent = <&gic>;
 
 	cpus {
@@ -30,312 +24,46 @@ cpu1: cpu@1 {
 			reg = <1>;
 		};
 	};
+};
 
-	gic: interrupt-controller@3ff00100 {
-		compatible = "arm,cortex-a9-gic";
-		#interrupt-cells = <3>;
-		#address-cells = <0>;
-		interrupt-controller;
-		reg = <0x3ff01000 0x1000>,
-		      <0x3ff00100 0x100>;
-	};
-
-	smc@3404e000 {
-		compatible = "brcm,bcm21664-smc", "brcm,kona-smc";
-		reg = <0x3404e000 0x400>; /* 1 KiB in SRAM */
-	};
-
-	uartb: serial@3e000000 {
-		compatible = "brcm,bcm21664-dw-apb-uart", "snps,dw-apb-uart";
-		reg = <0x3e000000 0x118>;
-		clocks = <&slave_ccu BCM21664_SLAVE_CCU_UARTB>;
-		interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
-		reg-shift = <2>;
-		reg-io-width = <4>;
-		status = "disabled";
-	};
-
-	uartb2: serial@3e001000 {
-		compatible = "brcm,bcm21664-dw-apb-uart", "snps,dw-apb-uart";
-		reg = <0x3e001000 0x118>;
-		clocks = <&slave_ccu BCM21664_SLAVE_CCU_UARTB2>;
-		interrupts = <GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH>;
-		reg-shift = <2>;
-		reg-io-width = <4>;
-		status = "disabled";
-	};
-
-	uartb3: serial@3e002000 {
-		compatible = "brcm,bcm21664-dw-apb-uart", "snps,dw-apb-uart";
-		reg = <0x3e002000 0x118>;
-		clocks = <&slave_ccu BCM21664_SLAVE_CCU_UARTB3>;
-		interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
-		reg-shift = <2>;
-		reg-io-width = <4>;
-		status = "disabled";
-	};
-
-	L2: cache-controller@3ff20000 {
-		compatible = "arm,pl310-cache";
-		reg = <0x3ff20000 0x1000>;
-		cache-unified;
-		cache-level = <2>;
-	};
-
-	brcm,resetmgr@35001f00 {
-		compatible = "brcm,bcm21664-resetmgr";
-		reg = <0x35001f00 0x24>;
-	};
-
-	timer@35006000 {
-		compatible = "brcm,kona-timer";
-		reg = <0x35006000 0x1c>;
-		interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&aon_ccu BCM21664_AON_CCU_HUB_TIMER>;
-	};
-
-	gpio: gpio@35003000 {
-		compatible = "brcm,bcm21664-gpio", "brcm,kona-gpio";
-		reg = <0x35003000 0x524>;
-		interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH>;
-		#gpio-cells = <2>;
-		#interrupt-cells = <2>;
-		gpio-controller;
-		interrupt-controller;
-	};
-
-	sdio1: mmc@3f180000 {
-		compatible = "brcm,kona-sdhci";
-		reg = <0x3f180000 0x801c>;
-		interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&master_ccu BCM21664_MASTER_CCU_SDIO1>;
-		status = "disabled";
-	};
-
-	sdio2: mmc@3f190000 {
-		compatible = "brcm,kona-sdhci";
-		reg = <0x3f190000 0x801c>;
-		interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&master_ccu BCM21664_MASTER_CCU_SDIO2>;
-		status = "disabled";
-	};
-
-	sdio3: mmc@3f1a0000 {
-		compatible = "brcm,kona-sdhci";
-		reg = <0x3f1a0000 0x801c>;
-		interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&master_ccu BCM21664_MASTER_CCU_SDIO3>;
-		status = "disabled";
-	};
-
-	sdio4: mmc@3f1b0000 {
-		compatible = "brcm,kona-sdhci";
-		reg = <0x3f1b0000 0x801c>;
-		interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&master_ccu BCM21664_MASTER_CCU_SDIO4>;
-		status = "disabled";
-	};
-
-	bsc1: i2c@3e016000 {
-		compatible = "brcm,bcm21664-i2c", "brcm,kona-i2c";
-		reg = <0x3e016000 0x70>;
-		interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
-		#address-cells = <1>;
-		#size-cells = <0>;
-		clocks = <&slave_ccu BCM21664_SLAVE_CCU_BSC1>;
-		status = "disabled";
-	};
-
-	bsc2: i2c@3e017000 {
-		compatible = "brcm,bcm21664-i2c", "brcm,kona-i2c";
-		reg = <0x3e017000 0x70>;
-		interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
-		#address-cells = <1>;
-		#size-cells = <0>;
-		clocks = <&slave_ccu BCM21664_SLAVE_CCU_BSC2>;
-		status = "disabled";
-	};
-
-	bsc3: i2c@3e018000 {
-		compatible = "brcm,bcm21664-i2c", "brcm,kona-i2c";
-		reg = <0x3e018000 0x70>;
-		interrupts = <GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH>;
-		#address-cells = <1>;
-		#size-cells = <0>;
-		clocks = <&slave_ccu BCM21664_SLAVE_CCU_BSC3>;
-		status = "disabled";
-	};
-
-	bsc4: i2c@3e01c000 {
-		compatible = "brcm,bcm21664-i2c", "brcm,kona-i2c";
-		reg = <0x3e01c000 0x70>;
-		interrupts = <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>;
-		#address-cells = <1>;
-		#size-cells = <0>;
-		clocks = <&slave_ccu BCM21664_SLAVE_CCU_BSC4>;
-		status = "disabled";
-	};
-
-	clocks {
-		#address-cells = <1>;
-		#size-cells = <1>;
-		ranges;
-
-		/*
-		 * Fixed clocks are defined before CCUs whose
-		 * clocks may depend on them.
-		 */
-
-		ref_32k_clk: ref_32k {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <32768>;
-		};
-
-		bbl_32k_clk: bbl_32k {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <32768>;
-		};
-
-		ref_13m_clk: ref_13m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <13000000>;
-		};
-
-		var_13m_clk: var_13m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <13000000>;
-		};
-
-		dft_19_5m_clk: dft_19_5m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <19500000>;
-		};
-
-		ref_crystal_clk: ref_crystal {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <26000000>;
-		};
-
-		ref_52m_clk: ref_52m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <52000000>;
-		};
-
-		var_52m_clk: var_52m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <52000000>;
-		};
-
-		usb_otg_ahb_clk: usb_otg_ahb {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <52000000>;
-		};
-
-		ref_96m_clk: ref_96m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <96000000>;
-		};
-
-		var_96m_clk: var_96m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <96000000>;
-		};
-
-		ref_104m_clk: ref_104m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <104000000>;
-		};
-
-		var_104m_clk: var_104m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <104000000>;
-		};
-
-		ref_156m_clk: ref_156m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <156000000>;
+&apps {
+		gic: interrupt-controller@1c01000 {
+			compatible = "arm,cortex-a9-gic";
+			#interrupt-cells = <3>;
+			#address-cells = <0>;
+			interrupt-controller;
+			reg = <0x01c01000 0x1000>,
+				  <0x01c00100 0x100>;
 		};
 
-		var_156m_clk: var_156m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <156000000>;
+		L2: cache-controller@1c20000 {
+			compatible = "arm,pl310-cache";
+			reg = <0x01c20000 0x1000>;
+			cache-unified;
+			cache-level = <2>;
 		};
+};
 
-		root_ccu: root_ccu@35001000 {
-			compatible = "brcm,bcm21664-root-ccu";
-			reg = <0x35001000 0x0f00>;
-			#clock-cells = <1>;
-			clock-output-names = "frac_1m";
-		};
+&bsc1 {
+	compatible = "brcm,bcm21664-i2c", "brcm,kona-i2c";
+};
 
-		aon_ccu: aon_ccu@35002000 {
-			compatible = "brcm,bcm21664-aon-ccu";
-			reg = <0x35002000 0x0f00>;
-			#clock-cells = <1>;
-			clock-output-names = "hub_timer";
-		};
+&bsc2 {
+	compatible = "brcm,bcm21664-i2c", "brcm,kona-i2c";
+};
 
-		master_ccu: master_ccu@3f001000 {
-			compatible = "brcm,bcm21664-master-ccu";
-			reg = <0x3f001000 0x0f00>;
-			#clock-cells = <1>;
-			clock-output-names = "sdio1",
-					     "sdio2",
-					     "sdio3",
-					     "sdio4",
-					     "sdio1_sleep",
-					     "sdio2_sleep",
-					     "sdio3_sleep",
-					     "sdio4_sleep";
-		};
+&bsc3 {
+	compatible = "brcm,bcm21664-i2c", "brcm,kona-i2c";
+};
 
-		slave_ccu: slave_ccu@3e011000 {
-			compatible = "brcm,bcm21664-slave-ccu";
-			reg = <0x3e011000 0x0f00>;
-			#clock-cells = <1>;
-			clock-output-names = "uartb",
-					     "uartb2",
-					     "uartb3",
-					     "bsc1",
-					     "bsc2",
-					     "bsc3",
-					     "bsc4";
-		};
-	};
+&bsc4 {
+	compatible = "brcm,bcm21664-i2c", "brcm,kona-i2c";
+};
 
-	usbotg: usb@3f120000 {
-		compatible = "snps,dwc2";
-		reg = <0x3f120000 0x10000>;
-		interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&usb_otg_ahb_clk>;
-		clock-names = "otg";
-		phys = <&usbphy>;
-		phy-names = "usb2-phy";
-		status = "disabled";
-	};
+&gpio {
+	compatible = "brcm,bcm21664-gpio", "brcm,kona-gpio";
+};
 
-	usbphy: usb-phy@3f130000 {
-		compatible = "brcm,kona-usb2-phy";
-		reg = <0x3f130000 0x28>;
-		#phy-cells = <0>;
-		status = "disabled";
-	};
+&smc {
+	compatible = "brcm,bcm21664-smc", "brcm,kona-smc";
 };
diff --git a/arch/arm/boot/dts/broadcom/bcm23550.dtsi b/arch/arm/boot/dts/broadcom/bcm2166x-common.dtsi
similarity index 68%
copy from arch/arm/boot/dts/broadcom/bcm23550.dtsi
copy to arch/arm/boot/dts/broadcom/bcm2166x-common.dtsi
index 50ebe93d6bd0..049e18b61ccd 100644
--- a/arch/arm/boot/dts/broadcom/bcm23550.dtsi
+++ b/arch/arm/boot/dts/broadcom/bcm2166x-common.dtsi
@@ -1,36 +1,13 @@
+// SPDX-License-Identifier: BSD-3-Clause
 /*
- *  BSD LICENSE
+ * Common device tree for components shared between the BCM21664 and BCM23550
+ * SoCs.
  *
- *  Copyright(c) 2016 Broadcom.  All rights reserved.
- *
- *  Redistribution and use in source and binary forms, with or without
- *  modification, are permitted provided that the following conditions
- *  are met:
- *
- *    * Redistributions of source code must retain the above copyright
- *      notice, this list of conditions and the following disclaimer.
- *    * Redistributions in binary form must reproduce the above copyright
- *      notice, this list of conditions and the following disclaimer in
- *      the documentation and/or other materials provided with the
- *      distribution.
- *    * Neither the name of Broadcom Corporation nor the names of its
- *      contributors may be used to endorse or promote products derived
- *      from this software without specific prior written permission.
- *
- *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * Copyright (C) 2016 Broadcom
  */
 
-/* BCM23550 and BCM21664 have almost identical clocks */
+/dts-v1/;
+
 #include <dt-bindings/clock/bcm21664.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/interrupt-controller/irq.h>
@@ -38,58 +15,16 @@
 / {
 	#address-cells = <1>;
 	#size-cells = <1>;
-	model = "BCM23550 SoC";
-	compatible = "brcm,bcm23550";
-	interrupt-parent = <&gic>;
-
-	cpus {
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		cpu0: cpu@0 {
-			device_type = "cpu";
-			compatible = "arm,cortex-a7";
-			reg = <0>;
-			clock-frequency = <1000000000>;
-		};
-
-		cpu1: cpu@1 {
-			device_type = "cpu";
-			compatible = "arm,cortex-a7";
-			enable-method = "brcm,bcm23550";
-			secondary-boot-reg = <0x35004178>;
-			reg = <1>;
-			clock-frequency = <1000000000>;
-		};
-
-		cpu2: cpu@2 {
-			device_type = "cpu";
-			compatible = "arm,cortex-a7";
-			enable-method = "brcm,bcm23550";
-			secondary-boot-reg = <0x35004178>;
-			reg = <2>;
-			clock-frequency = <1000000000>;
-		};
-
-		cpu3: cpu@3 {
-			device_type = "cpu";
-			compatible = "arm,cortex-a7";
-			enable-method = "brcm,bcm23550";
-			secondary-boot-reg = <0x35004178>;
-			reg = <3>;
-			clock-frequency = <1000000000>;
-		};
-	};
 
 	/* Hub bus */
-	hub@34000000 {
+	hub: hub-bus@34000000 {
 		compatible = "simple-bus";
 		ranges = <0 0x34000000 0x102f83ac>;
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		smc@4e000 {
-			compatible = "brcm,bcm23550-smc", "brcm,kona-smc";
+		smc: smc@4e000 {
+			/* Compatible filled by SoC DTSI */
 			reg = <0x0004e000 0x400>; /* 1 KiB in SRAM */
 		};
 
@@ -99,7 +34,7 @@ resetmgr: reset-controller@1001f00 {
 		};
 
 		gpio: gpio@1003000 {
-			compatible = "brcm,bcm23550-gpio", "brcm,kona-gpio";
+			/* Compatible filled by SoC DTSI */
 			reg = <0x01003000 0x524>;
 			interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>,
@@ -120,7 +55,7 @@ timer@1006000 {
 	};
 
 	/* Slaves bus */
-	slaves@3e000000 {
+	slaves: slaves-bus@3e000000 {
 		compatible = "simple-bus";
 		ranges = <0 0x3e000000 0x0001c070>;
 		#address-cells = <1>;
@@ -157,7 +92,7 @@ uartb3: serial@2000 {
 		};
 
 		bsc1: i2c@16000 {
-			compatible = "brcm,bcm23550-i2c", "brcm,kona-i2c";
+			/* Compatible filled by SoC DTSI */
 			reg = <0x00016000 0x70>;
 			interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
@@ -167,7 +102,7 @@ bsc1: i2c@16000 {
 		};
 
 		bsc2: i2c@17000 {
-			compatible = "brcm,bcm23550-i2c", "brcm,kona-i2c";
+			/* Compatible filled by SoC DTSI */
 			reg = <0x00017000 0x70>;
 			interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
@@ -177,7 +112,7 @@ bsc2: i2c@17000 {
 		};
 
 		bsc3: i2c@18000 {
-			compatible = "brcm,bcm23550-i2c", "brcm,kona-i2c";
+			/* Compatible filled by SoC DTSI */
 			reg = <0x00018000 0x70>;
 			interrupts = <GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
@@ -187,7 +122,7 @@ bsc3: i2c@18000 {
 		};
 
 		bsc4: i2c@1c000 {
-			compatible = "brcm,bcm23550-i2c", "brcm,kona-i2c";
+			/* Compatible filled by SoC DTSI */
 			reg = <0x0001c000 0x70>;
 			interrupts = <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
@@ -198,7 +133,7 @@ bsc4: i2c@1c000 {
 	};
 
 	/* Apps bus */
-	apps@3e300000 {
+	apps: apps-bus@3e300000 {
 		compatible = "simple-bus";
 		ranges = <0 0x3e300000 0x01b77000>;
 		#address-cells = <1>;
@@ -253,20 +188,6 @@ sdio4: mmc@eb0000 {
 			clocks = <&master_ccu BCM21664_MASTER_CCU_SDIO4>;
 			status = "disabled";
 		};
-
-		cdc: cdc@1b0e000 {
-			compatible = "brcm,bcm23550-cdc";
-			reg = <0x01b0e000 0x78>;
-		};
-
-		gic: interrupt-controller@1b21000 {
-			compatible = "arm,cortex-a9-gic";
-			#interrupt-cells = <3>;
-			#address-cells = <0>;
-			interrupt-controller;
-			reg = <0x01b21000 0x1000>,
-			      <0x01b22000 0x1000>;
-		};
 	};
 
 	clocks {
diff --git a/arch/arm/boot/dts/broadcom/bcm23550.dtsi b/arch/arm/boot/dts/broadcom/bcm23550.dtsi
index 50ebe93d6bd0..c1c69381286b 100644
--- a/arch/arm/boot/dts/broadcom/bcm23550.dtsi
+++ b/arch/arm/boot/dts/broadcom/bcm23550.dtsi
@@ -1,45 +1,13 @@
+// SPDX-License-Identifier: BSD-3-Clause
 /*
- *  BSD LICENSE
+ * Device tree for the BCM23550 SoC.
  *
- *  Copyright(c) 2016 Broadcom.  All rights reserved.
- *
- *  Redistribution and use in source and binary forms, with or without
- *  modification, are permitted provided that the following conditions
- *  are met:
- *
- *    * Redistributions of source code must retain the above copyright
- *      notice, this list of conditions and the following disclaimer.
- *    * Redistributions in binary form must reproduce the above copyright
- *      notice, this list of conditions and the following disclaimer in
- *      the documentation and/or other materials provided with the
- *      distribution.
- *    * Neither the name of Broadcom Corporation nor the names of its
- *      contributors may be used to endorse or promote products derived
- *      from this software without specific prior written permission.
- *
- *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * Copyright (C) 2016 Broadcom
  */
 
-/* BCM23550 and BCM21664 have almost identical clocks */
-#include <dt-bindings/clock/bcm21664.h>
-#include <dt-bindings/interrupt-controller/arm-gic.h>
-#include <dt-bindings/interrupt-controller/irq.h>
+#include "bcm2166x-common.dtsi"
 
 / {
-	#address-cells = <1>;
-	#size-cells = <1>;
-	model = "BCM23550 SoC";
-	compatible = "brcm,bcm23550";
 	interrupt-parent = <&gic>;
 
 	cpus {
@@ -80,180 +48,9 @@ cpu3: cpu@3 {
 			clock-frequency = <1000000000>;
 		};
 	};
+};
 
-	/* Hub bus */
-	hub@34000000 {
-		compatible = "simple-bus";
-		ranges = <0 0x34000000 0x102f83ac>;
-		#address-cells = <1>;
-		#size-cells = <1>;
-
-		smc@4e000 {
-			compatible = "brcm,bcm23550-smc", "brcm,kona-smc";
-			reg = <0x0004e000 0x400>; /* 1 KiB in SRAM */
-		};
-
-		resetmgr: reset-controller@1001f00 {
-			compatible = "brcm,bcm21664-resetmgr";
-			reg = <0x01001f00 0x24>;
-		};
-
-		gpio: gpio@1003000 {
-			compatible = "brcm,bcm23550-gpio", "brcm,kona-gpio";
-			reg = <0x01003000 0x524>;
-			interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>,
-				     <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>,
-				     <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>,
-				     <GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH>;
-			#gpio-cells = <2>;
-			#interrupt-cells = <2>;
-			gpio-controller;
-			interrupt-controller;
-		};
-
-		timer@1006000 {
-			compatible = "brcm,kona-timer";
-			reg = <0x01006000 0x1c>;
-			interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&aon_ccu BCM21664_AON_CCU_HUB_TIMER>;
-		};
-	};
-
-	/* Slaves bus */
-	slaves@3e000000 {
-		compatible = "simple-bus";
-		ranges = <0 0x3e000000 0x0001c070>;
-		#address-cells = <1>;
-		#size-cells = <1>;
-
-		uartb: serial@0 {
-			compatible = "snps,dw-apb-uart";
-			reg = <0x00000000 0x118>;
-			clocks = <&slave_ccu BCM21664_SLAVE_CCU_UARTB>;
-			interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
-			reg-shift = <2>;
-			reg-io-width = <4>;
-			status = "disabled";
-		};
-
-		uartb2: serial@1000 {
-			compatible = "snps,dw-apb-uart";
-			reg = <0x00001000 0x118>;
-			clocks = <&slave_ccu BCM21664_SLAVE_CCU_UARTB2>;
-			interrupts = <GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH>;
-			reg-shift = <2>;
-			reg-io-width = <4>;
-			status = "disabled";
-		};
-
-		uartb3: serial@2000 {
-			compatible = "snps,dw-apb-uart";
-			reg = <0x00002000 0x118>;
-			clocks = <&slave_ccu BCM21664_SLAVE_CCU_UARTB3>;
-			interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
-			reg-shift = <2>;
-			reg-io-width = <4>;
-			status = "disabled";
-		};
-
-		bsc1: i2c@16000 {
-			compatible = "brcm,bcm23550-i2c", "brcm,kona-i2c";
-			reg = <0x00016000 0x70>;
-			interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
-			#address-cells = <1>;
-			#size-cells = <0>;
-			clocks = <&slave_ccu BCM21664_SLAVE_CCU_BSC1>;
-			status = "disabled";
-		};
-
-		bsc2: i2c@17000 {
-			compatible = "brcm,bcm23550-i2c", "brcm,kona-i2c";
-			reg = <0x00017000 0x70>;
-			interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
-			#address-cells = <1>;
-			#size-cells = <0>;
-			clocks = <&slave_ccu BCM21664_SLAVE_CCU_BSC2>;
-			status = "disabled";
-		};
-
-		bsc3: i2c@18000 {
-			compatible = "brcm,bcm23550-i2c", "brcm,kona-i2c";
-			reg = <0x00018000 0x70>;
-			interrupts = <GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH>;
-			#address-cells = <1>;
-			#size-cells = <0>;
-			clocks = <&slave_ccu BCM21664_SLAVE_CCU_BSC3>;
-			status = "disabled";
-		};
-
-		bsc4: i2c@1c000 {
-			compatible = "brcm,bcm23550-i2c", "brcm,kona-i2c";
-			reg = <0x0001c000 0x70>;
-			interrupts = <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>;
-			#address-cells = <1>;
-			#size-cells = <0>;
-			clocks = <&slave_ccu BCM21664_SLAVE_CCU_BSC4>;
-			status = "disabled";
-		};
-	};
-
-	/* Apps bus */
-	apps@3e300000 {
-		compatible = "simple-bus";
-		ranges = <0 0x3e300000 0x01b77000>;
-		#address-cells = <1>;
-		#size-cells = <1>;
-
-		usbotg: usb@e20000 {
-			compatible = "snps,dwc2";
-			reg = <0x00e20000 0x10000>;
-			interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&usb_otg_ahb_clk>;
-			clock-names = "otg";
-			phys = <&usbphy>;
-			phy-names = "usb2-phy";
-			status = "disabled";
-		};
-
-		usbphy: usb-phy@e30000 {
-			compatible = "brcm,kona-usb2-phy";
-			reg = <0x00e30000 0x28>;
-			#phy-cells = <0>;
-			status = "disabled";
-		};
-
-		sdio1: mmc@e80000 {
-			compatible = "brcm,kona-sdhci";
-			reg = <0x00e80000 0x801c>;
-			interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&master_ccu BCM21664_MASTER_CCU_SDIO1>;
-			status = "disabled";
-		};
-
-		sdio2: mmc@e90000 {
-			compatible = "brcm,kona-sdhci";
-			reg = <0x00e90000 0x801c>;
-			interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&master_ccu BCM21664_MASTER_CCU_SDIO2>;
-			status = "disabled";
-		};
-
-		sdio3: mmc@ea0000 {
-			compatible = "brcm,kona-sdhci";
-			reg = <0x00ea0000 0x801c>;
-			interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&master_ccu BCM21664_MASTER_CCU_SDIO3>;
-			status = "disabled";
-		};
-
-		sdio4: mmc@eb0000 {
-			compatible = "brcm,kona-sdhci";
-			reg = <0x00eb0000 0x801c>;
-			interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&master_ccu BCM21664_MASTER_CCU_SDIO4>;
-			status = "disabled";
-		};
-
+&apps {
 		cdc: cdc@1b0e000 {
 			compatible = "brcm,bcm23550-cdc";
 			reg = <0x01b0e000 0x78>;
@@ -267,147 +64,28 @@ gic: interrupt-controller@1b21000 {
 			reg = <0x01b21000 0x1000>,
 			      <0x01b22000 0x1000>;
 		};
-	};
-
-	clocks {
-		#address-cells = <1>;
-		#size-cells = <1>;
-		ranges;
-
-		/*
-		 * Fixed clocks are defined before CCUs whose
-		 * clocks may depend on them.
-		 */
-
-		ref_32k_clk: ref_32k {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <32768>;
-		};
-
-		bbl_32k_clk: bbl_32k {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <32768>;
-		};
-
-		ref_13m_clk: ref_13m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <13000000>;
-		};
-
-		var_13m_clk: var_13m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <13000000>;
-		};
-
-		dft_19_5m_clk: dft_19_5m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <19500000>;
-		};
-
-		ref_crystal_clk: ref_crystal {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <26000000>;
-		};
-
-		ref_52m_clk: ref_52m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <52000000>;
-		};
-
-		var_52m_clk: var_52m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <52000000>;
-		};
-
-		usb_otg_ahb_clk: usb_otg_ahb {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <52000000>;
-		};
-
-		ref_96m_clk: ref_96m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <96000000>;
-		};
-
-		var_96m_clk: var_96m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <96000000>;
-		};
-
-		ref_104m_clk: ref_104m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <104000000>;
-		};
-
-		var_104m_clk: var_104m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <104000000>;
-		};
+};
 
-		ref_156m_clk: ref_156m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <156000000>;
-		};
+&bsc1 {
+	compatible = "brcm,bcm23550-i2c", "brcm,kona-i2c";
+};
 
-		var_156m_clk: var_156m {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <156000000>;
-		};
+&bsc2 {
+	compatible = "brcm,bcm23550-i2c", "brcm,kona-i2c";
+};
 
-		root_ccu: root_ccu@35001000 {
-			compatible = "brcm,bcm21664-root-ccu";
-			reg = <0x35001000 0x0f00>;
-			#clock-cells = <1>;
-			clock-output-names = "frac_1m";
-		};
+&bsc3 {
+	compatible = "brcm,bcm23550-i2c", "brcm,kona-i2c";
+};
 
-		aon_ccu: aon_ccu@35002000 {
-			compatible = "brcm,bcm21664-aon-ccu";
-			reg = <0x35002000 0x0f00>;
-			#clock-cells = <1>;
-			clock-output-names = "hub_timer";
-		};
+&bsc4 {
+	compatible = "brcm,bcm23550-i2c", "brcm,kona-i2c";
+};
 
-		slave_ccu: slave_ccu@3e011000 {
-			compatible = "brcm,bcm21664-slave-ccu";
-			reg = <0x3e011000 0x0f00>;
-			#clock-cells = <1>;
-			clock-output-names = "uartb",
-					     "uartb2",
-					     "uartb3",
-					     "bsc1",
-					     "bsc2",
-					     "bsc3",
-					     "bsc4";
-		};
+&gpio {
+	compatible = "brcm,bcm23550-gpio", "brcm,kona-gpio";
+};
 
-		master_ccu: master_ccu@3f001000 {
-			compatible = "brcm,bcm21664-master-ccu";
-			reg = <0x3f001000 0x0f00>;
-			#clock-cells = <1>;
-			clock-output-names = "sdio1",
-					     "sdio2",
-					     "sdio3",
-					     "sdio4",
-					     "sdio1_sleep",
-					     "sdio2_sleep",
-					     "sdio3_sleep",
-					     "sdio4_sleep";
-		};
-	};
+&smc {
+	compatible = "brcm,bcm23550-smc", "brcm,kona-smc";
 };

-- 
2.45.2

Re: [PATCH RESEND v2 0/2] ARM: dts: bcm-mobile: Split out nodes used by both BCM21664 and BCM23550

[Florian Fainelli]

On 7/29/24 05:34, Artur Weber wrote:
> The BCM21664 and BCM23550 are nearly identical to each other in terms
> of register layout. This was verified against a downstream kernel[1] -
> Broadcom's kernel has "RDB" directories which includes headers with
> the full register maps for the included hardware. Running:
> 
>    diff --recursive arch/arm/mach-{hawaii,java}/include/mach/rdb
> 
> reveals that the differences are minuscule - some things related to
> ISP and H264 decoding. Most of the other differences are related to
> the different CPUs in the two chipsets - the BCM21664 has 2x Cortex-A9
> cores, and the BCM23550 has 4x Cortex-A7 cores.
> 
> In mainline, most drivers are also re-used between the two.
> 
> To make development for both platforms easier, split out the common
> nodes into a separate DTSI, bcm2166x-common.dtsi. This only leaves
> the device-specific nodes - so, CPU and related things - in the SoC-
> specific DTSIs (bcm21664.dtsi and bcm23550.dtsi).
> 
> The new DTSI is based off the bcm23550.dtsi, with its split into
> busses. Since it's pretty much 99% identical, I kept the licensing
> of the original file (BSD 3-clause). The license for the bcm21664.dtsi
> file remains GPL 2.0 as it originally was.
> 
> make CHECK_DTBS=y on bcm21664-garnet.dtb and bcm23550-sparrow.dtb
> seem to pass fine for me (thanks to Stanislav Jakubek for converting
> the bindings to YAML format!).
> 
> [1] https://github.com/knuxdroid/android_kernel_samsung_baffinlite
> 
> Signed-off-by: Artur Weber <aweber.kernel@gmail.com>

Thanks for resending, I had those on my radar to push out, now done!

Applied to https://github.com/Broadcom/stblinux/commits/devicetree/next
-- 
Florian