Re: [PATCH 3/6] arm64: dts: broadcom: Add support for BCM2712

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Hi Phil,

Am 15.04.24 um 10:52 schrieb Phil Elwell:
Stefan,


On Mon, 15 Apr 2024 at 09:20, Stefan Wahren <wahrenst@xxxxxxx> wrote:
Hi Phil,

Am 14.04.24 um 00:14 schrieb Andrea della Porta:
Signed-off-by: Andrea della Porta <andrea.porta@xxxxxxxx>
---
   arch/arm64/boot/dts/broadcom/Makefile         |   1 +
   .../boot/dts/broadcom/bcm2712-rpi-5-b.dts     | 313 +++++++
   arch/arm64/boot/dts/broadcom/bcm2712-rpi.dtsi |  81 ++
   arch/arm64/boot/dts/broadcom/bcm2712.dtsi     | 841 ++++++++++++++++++
   4 files changed, 1236 insertions(+)
   create mode 100644 arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
   create mode 100644 arch/arm64/boot/dts/broadcom/bcm2712-rpi.dtsi
   create mode 100644 arch/arm64/boot/dts/broadcom/bcm2712.dtsi

diff --git a/arch/arm64/boot/dts/broadcom/Makefile b/arch/arm64/boot/dts/broadcom/Makefile
index 8b4591ddd27c..92565e9781ad 100644
--- a/arch/arm64/boot/dts/broadcom/Makefile
+++ b/arch/arm64/boot/dts/broadcom/Makefile
@@ -6,6 +6,7 @@ DTC_FLAGS := -@
   dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rpi-400.dtb \
                             bcm2711-rpi-4-b.dtb \
                             bcm2711-rpi-cm4-io.dtb \
+                           bcm2712-rpi-5-b.dtb \
                             bcm2837-rpi-3-a-plus.dtb \
                             bcm2837-rpi-3-b.dtb \
                             bcm2837-rpi-3-b-plus.dtb \
diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
new file mode 100644
index 000000000000..2ce180a54e5b
--- /dev/null
+++ b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
@@ -0,0 +1,313 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pwm/pwm.h>
+#include <dt-bindings/reset/raspberrypi,firmware-reset.h>
+
+#define spi0 _spi0
+#define uart0 _uart0
+
+#include "bcm2712.dtsi"
+
+#undef spi0
+#undef uart0
+
+/ {
+     compatible = "raspberrypi,5-model-b", "brcm,bcm2712";
+     model = "Raspberry Pi 5";
+

according to this downstream commit [1] it's just called "Raspberry Pi
5" without Model B, but the filename and the compatible says something
different. Is there still a chance to get this consistent or is it too
late because the firmware expect the compatible?

[1] -
https://github.com/raspberrypi/linux/commit/99e359d2f2da2c820fd2a30b1ad08b32c9549adb
Nothing cares about the compatible string, but the product name was
changed too late for the firmware, which expects the current DTB file
name.
should i send a pull request to address the compatible? This would avoid
a little bit confusion in the upstreaming process, because
devicetree/bindings/arm/bcm/bcm2835.yaml needs to be updated as well.

Best regards
  I'm happy with the naming as it stands, since we use Pi 4 to
refer to all the BCM2711-based devices, and Pi 5 can include CM5.

Phil






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