linux-kernel - Re: [PATCH v2] arm64: dts: mediatek: mt7988a-bpi-r4: allow hw variants of bpi-r4

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Message-ID: <c8f9f019-a238-47c8-a900-9ca48ce09503@collabora.com>
Date: Mon, 14 Apr 2025 11:27:23 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Frank Wunderlich <linux@...web.de>,
 Matthias Brugger <matthias.bgg@...il.com>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>
Cc: Frank Wunderlich <frank-w@...lic-files.de>, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org,
 devicetree@...r.kernel.org, Daniel Golle <daniel@...rotopia.org>
Subject: Re: [PATCH v2] arm64: dts: mediatek: mt7988a-bpi-r4: allow hw
 variants of bpi-r4

Il 12/04/25 12:21, Frank Wunderlich ha scritto:
> From: Frank Wunderlich <frank-w@...lic-files.de>
> 
> Sinovoip has released other variants of Bananapi-R4 board.
> The known changes affecting only the LAN SFP+ slot which is replaced
> by a 2.5G phy with optional PoE.
> 
> Just move the common parts to a new dtsi and keep differences (only
> i2c for lan-sfp) in dts.
> 
> Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
> ---
> v2:
> - added basic dts for 2g5 variant
> - moved i2c used for sfp-lan to board dts
> ---
>   arch/arm64/boot/dts/mediatek/Makefile         |   2 +
>   .../mediatek/mt7988a-bananapi-bpi-r4-2g5.dts  |   5 +
>   .../dts/mediatek/mt7988a-bananapi-bpi-r4.dts  | 404 +-----------------
>   .../dts/mediatek/mt7988a-bananapi-bpi-r4.dtsi | 403 +++++++++++++++++
>   4 files changed, 414 insertions(+), 400 deletions(-)
>   create mode 100644 arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-2g5.dts
>   create mode 100644 arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dtsi
> 
> diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
> index 58484e830063..a1ebc9aa4ba6 100644
> --- a/arch/arm64/boot/dts/mediatek/Makefile
> +++ b/arch/arm64/boot/dts/mediatek/Makefile
> @@ -22,6 +22,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-sd.dtbo
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-rfb.dtb
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986b-rfb.dtb
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4.dtb
> +dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-2g5.dtb
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-emmc.dtbo
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-sd.dtbo
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt8167-pumpkin.dtb
> @@ -107,4 +108,5 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt8516-pumpkin.dtb
>   DTC_FLAGS_mt7986a-bananapi-bpi-r3 := -@
>   DTC_FLAGS_mt7986a-bananapi-bpi-r3-mini := -@
>   DTC_FLAGS_mt7988a-bananapi-bpi-r4 := -@
> +DTC_FLAGS_mt7988a-bananapi-bpi-r4-2g5 := -@
>   DTC_FLAGS_mt8395-radxa-nio-12l := -@
> diff --git a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-2g5.dts b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-2g5.dts
> new file mode 100644
> index 000000000000..76eca976b968
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-2g5.dts
> @@ -0,0 +1,5 @@
> +// SPDX-License-Identifier: GPL-2.0-only OR MIT
> +
> +/dts-v1/;
> +
> +#include "mt7988a-bananapi-bpi-r4.dtsi"

This should at least have some different compatible, if not probably also a
different model string - as it's a different device.

	compatible = "bananapi,bpi-r4-2g5", "bananapi,bpi-r4", "mediatek,mt7988a";
	model = "Banana Pi BPI-R4 (2.5GbE)";
	chassis-type = "embedded";

> diff --git a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts
> index 6623112c24c7..431bf066fffb 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts

..snip..

a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dtsi 
b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dtsi
> new file mode 100644
> index 000000000000..1ab09ed2f151
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dtsi
> @@ -0,0 +1,403 @@
> +// SPDX-License-Identifier: GPL-2.0-only OR MIT
> +
> +/dts-v1/;
> +
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/regulator/richtek,rt5190a-regulator.h>
> +
> +#include "mt7988a.dtsi"
> +
> +/ {
> +	compatible = "bananapi,bpi-r4", "mediatek,mt7988a";
> +	model = "Banana Pi BPI-R4";
> +	chassis-type = "embedded";

Please keep compatible/model/chassis-type in dts files.


Cheers,
Angelo