Re: [PATCH 3/4] ARM: dts: BCM5301X: Add DT for ASUS RT-AC3200

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On 14.04.2024 17:13, Krzysztof Kozlowski wrote:
On 14/04/2024 13:46, Arınç ÜNAL via B4 Relay wrote:
From: Arınç ÜNAL <arinc.unal@xxxxxxxxxx>

Add the device tree for ASUS RT-AC3200 which is an AC3200 router featuring
5 Ethernet ports over the integrated Broadcom switch.

Hardware info:
* Processor: Broadcom BCM4709A0 dual-core @ 1.0 GHz
* Switch: BCM53012 in BCM4709A0
* DDR3 RAM: 256 MB
* Flash: 128 MB
* 2.4GHz: BCM43602 3x3 single chip 802.11b/g/n SoC
* 5GHz: BCM43602 3x3 two chips 802.11a/n/ac SoC
* Ports: 4 LAN Ports, 1 WAN Port

Co-developed-by: Tom Brautaset <tbrautaset@xxxxxxxxx>
Signed-off-by: Tom Brautaset <tbrautaset@xxxxxxxxx>
Signed-off-by: Arınç ÜNAL <arinc.unal@xxxxxxxxxx>
---
  arch/arm/boot/dts/broadcom/Makefile                |   1 +
  .../boot/dts/broadcom/bcm4709-asus-rt-ac3200.dts   | 164 +++++++++++++++++++++
  2 files changed, 165 insertions(+)

diff --git a/arch/arm/boot/dts/broadcom/Makefile b/arch/arm/boot/dts/broadcom/Makefile
index 7099d9560033..c61fca514775 100644
--- a/arch/arm/boot/dts/broadcom/Makefile
+++ b/arch/arm/boot/dts/broadcom/Makefile
@@ -64,6 +64,7 @@ dtb-$(CONFIG_ARCH_BCM_5301X) += \
  	bcm47081-luxul-xap-1410.dtb \
  	bcm47081-luxul-xwr-1200.dtb \
  	bcm47081-tplink-archer-c5-v2.dtb \
+	bcm4709-asus-rt-ac3200.dtb \
  	bcm4709-asus-rt-ac87u.dtb \
  	bcm4709-buffalo-wxr-1900dhp.dtb \
  	bcm4709-linksys-ea9200.dtb \
diff --git a/arch/arm/boot/dts/broadcom/bcm4709-asus-rt-ac3200.dts b/arch/arm/boot/dts/broadcom/bcm4709-asus-rt-ac3200.dts
new file mode 100644
index 000000000000..8640dda211ae
--- /dev/null
+++ b/arch/arm/boot/dts/broadcom/bcm4709-asus-rt-ac3200.dts
@@ -0,0 +1,164 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Author: Tom Brautaset <tbrautaset@xxxxxxxxx>
+ */
+
+/dts-v1/;
+
+#include "bcm4709.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
+
+#include <dt-bindings/leds/common.h>
+
+/ {
+	compatible = "asus,rt-ac3200", "brcm,bcm4709", "brcm,bcm4708";
+	model = "ASUS RT-AC3200";
+
+	chosen {
+		bootargs = "console=ttyS0,115200 earlycon";

1. Use stdout.
2. Drop earlycon, it is for debugging, not regular mainline usage.

I see that bcm4708.dtsi which this device tree includes already describes
stdout-path with the same value so I'll just get rid of the chosen node
here.


+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00000000 0x08000000>,
+		      <0x88000000 0x08000000>;
+	};
+
+	nvram@1c080000 {
+		compatible = "brcm,nvram";
+		reg = <0x1c080000 0x00180000>;

Why is this outside of soc? Both soc node and soc DTSI?

I don't maintain the SoC device tree files so I don't know. The nvram node
doesn't exist on any of the device tree files included by this device tree.

Arınç




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