linux-kernel - Re: [PATCH 3/4] arm64: dts: ti: k3-am62a7-sk: Add overlay for fusion 2 board

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Message-ID: <83f805b2-afa7-4939-87c5-840d9aaf2443@linaro.org>
Date: Wed, 12 Feb 2025 21:13:10 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Sebastian LaVine <slavine@...mbedded.com>, devicetree@...r.kernel.org,
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Cc: Nícolas F. R. A. Prado <nfraprado@...labora.com>,
 Abel Vesa <abel.vesa@...aro.org>, Achath Vaishnav <vaishnav.a@...com>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 Ard Biesheuvel <ardb@...nel.org>,
 Benjamin Mugnier <benjamin.mugnier@...s.st.com>,
 Biju Das <biju.das.jz@...renesas.com>,
 Bjorn Andersson <quic_bjorande@...cinc.com>,
 Catalin Marinas <catalin.marinas@....com>, Conor Dooley
 <conor+dt@...nel.org>, Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
 Elinor Montmasson <elinor.montmasson@...oirfairelinux.com>,
 Fabio Estevam <festevam@...il.com>,
 Geert Uytterhoeven <geert+renesas@...der.be>,
 Hans Verkuil <hverkuil@...all.nl>,
 Javier Carrasco <javier.carrasco@...fvision.net>, Jianzhong Xu <xuj@...com>,
 Julien Massot <julien.massot@...labora.com>,
 Kieran Bingham <kieran.bingham@...asonboard.com>,
 Kory Maincent <kory.maincent@...tlin.com>,
 Laurent Pinchart <laurent.pinchart@...asonboard.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>,
 Mikhail Rudenko <mike.rudenko@...il.com>, Nishanth Menon <nm@...com>,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 Rob Herring <robh@...nel.org>, Sakari Ailus <sakari.ailus@...ux.intel.com>,
 Sascha Hauer <s.hauer@...gutronix.de>, Shawn Guo <shawnguo@...nel.org>,
 Stuart Burtner <sburtner@...mbedded.com>, Tero Kristo <kristo@...nel.org>,
 Thakkar Devarsh <devarsht@...com>,
 Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
 Umang Jain <umang.jain@...asonboard.com>,
 Vignesh Raghavendra <vigneshr@...com>, Will Deacon <will@...nel.org>,
 Zhi Mao <zhi.mao@...iatek.com>
Subject: Re: [PATCH 3/4] arm64: dts: ti: k3-am62a7-sk: Add overlay for fusion
 2 board

On 12/02/2025 20:56, Sebastian LaVine wrote:
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 27fb3c1be732..bf6a48da0887 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -21890,6 +21890,7 @@ M:      Stuart Burtner <sburtner@...mbedded.com>
>  L:     linux-media@...r.kernel.org
>  S:     Odd Fixes
>  F:     Documentation/devicetree/bindings/media/i2c/sony,imx728.yaml
> +F:     arch/arm64/boot/dts/ti/k3-am62a7-sk-fusion-2.dtso
>  F:     drivers/media/i2c/imx728.c
> 
>  SONY MEMORYSTICK SUBSYSTEM
> diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
> index f71360f14f23..fcd8d11e5678 100644
> --- a/arch/arm64/boot/dts/ti/Makefile
> +++ b/arch/arm64/boot/dts/ti/Makefile
> @@ -31,6 +31,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am62-lp-sk-nand.dtbo
>  # Boards with AM62Ax SoC
>  dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk.dtb
>  dtb-$(CONFIG_ARCH_K3) += k3-am62a7-phyboard-lyra-rdk.dtb
> +dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk-fusion-2.dtbo

I don't see the overlay being applied.

> 
>  # Boards with AM62Px SoC
>  dtb-$(CONFIG_ARCH_K3) += k3-am62p5-sk.dtb
> diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk-fusion-2.dtso b/arch/arm64/boot/dts/ti/k3-am62a7-sk-fusion-2.dtso
> new file mode 100644
> index 000000000000..68e06d643bfd
> --- /dev/null
> +++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk-fusion-2.dtso
> @@ -0,0 +1,115 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * DT Overlay for Fusion 2 (FPD-Link IV) board on SK-AM62A
> + * https://www.ti.com/tool/J7EXPAXEVM/
> + *
> + * Copyright (C) 2024 D3 Embedded - https://www.d3embedded.com
> + */
> +
> + /dts-v1/;
> + /plugin/;
> +
> +#include <dt-bindings/gpio/gpio.h>
> +
> +&{/} {
> +       clk_fusion2_25M_fixed: fixed-clock-25M {
> +               compatible = "fixed-clock";
> +               #clock-cells = <0>;
> +               clock-frequency = <25000000>;
> +       };
> +};
> +
> +&exp2 {
> +       p9-hog {
> +               /* P9 - CSI_RSTz */
> +               gpio-hog;
> +               gpios = <9 GPIO_ACTIVE_HIGH>;
> +               output-high;
> +               line-name = "CSI_RSTz";
> +       };
> +
> +       p19-hog {
> +               /* P19 -CSI_SEL2 */
> +               gpio-hog;
> +               gpios = <19 GPIO_ACTIVE_HIGH>;
> +               output-low;
> +               line-name = "CSI_SEL2";
> +       };
> +};
> +
> +&main_i2c2 {
> +       #address-cells = <1>;
> +       #size-cells = <0>;
> +       status = "okay";
> +
> +       i2c-switch@71 {
> +               compatible = "nxp,pca9543";
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +               reg = <0x71>;

reg is always the second property. See DTS coding style.

Best regards,
Krzysztof