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

[Vaishnav Achath]

Hi Sebastian,

On 13/02/25 01:26, Sebastian LaVine wrote:
> Adds an overlay for the Fusion 2 (FPD-Link IV) board on SK-AM62A.
> 

Were you able to test and get this working without additional patches on 
linux-next?

The multi-steam support for J721E-CSI2RX and CDNS-CSI2RX drivers are 
still WIP [1] and as per my understanding you will need those to get 
this overlay functional.

1 - 
https://lore.kernel.org/all/20240627-multistream-v2-0-6ae96c54c1c3@ti.com/

Thanks and Regards,
Vaishnav

> Signed-off-by: Sebastian LaVine <slavine at d3embedded.com>
> Mentored-by: Stuart Burtner <sburtner at d3embedded.com>
> ---
>   MAINTAINERS                                   |   1 +
>   arch/arm64/boot/dts/ti/Makefile               |   1 +
>   .../boot/dts/ti/k3-am62a7-sk-fusion-2.dtso    | 115 ++++++++++++++++++
>   3 files changed, 117 insertions(+)
>   create mode 100644 arch/arm64/boot/dts/ti/k3-am62a7-sk-fusion-2.dtso
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 27fb3c1be732..bf6a48da0887 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -21890,6 +21890,7 @@ M:      Stuart Burtner <sburtner at d3embedded.com>
>   L:     linux-media at vger.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
> 
>   # 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 at 71 {
> +               compatible = "nxp,pca9543";
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +               reg = <0x71>;
> +
> +               i2c at 1 {
> +                       #address-cells = <1>;
> +                       #size-cells = <0>;
> +                       reg = <1>;
> +
> +                       deser at 3d {
> +                               compatible = "ti,ds90ub9702-q1";
> +                               reg = <0x3d>;
> +
> +                               clock-names = "refclk";
> +                               clocks = <&clk_fusion2_25M_fixed>;
> +
> +                               i2c-alias-pool = <0x4a 0x4b 0x4c 0x4d 0x4e 0x4f>;
> +
> +                               ds90ub9702_0_ports: ports {
> +                                       #address-cells = <1>;
> +                                       #size-cells = <0>;
> +
> +                                       /* CSI-2 TX */
> +                                       port at 4 {
> +                                               reg = <4>;
> +                                               ds90ub9702_0_csi_out: endpoint {
> +                                                       data-lanes = <1 2 3 4>;
> +                                                       clock-lanes = <0>;
> +                                                       link-frequencies = /bits/ 64 <800000000>;
> +                                                       remote-endpoint = <&csi2_phy0>;
> +                                               };
> +                                       };
> +                               };
> +
> +                               ds90ub9702_0_links: links {
> +                                       #address-cells = <1>;
> +                                       #size-cells = <0>;
> +                               };
> +                       };
> +               };
> +       };
> +};
> +
> +&cdns_csi2rx0 {
> +       ports {
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +
> +               csi0_port0: port at 0 {
> +                       reg = <0>;
> +                       status = "okay";
> +
> +                       csi2_phy0: endpoint {
> +                               remote-endpoint = <&ds90ub9702_0_csi_out>;
> +                               data-lanes = <1 2 3 4>;
> +                               clock-lanes = <0>;
> +                               link-frequencies = /bits/ 64 <800000000>;
> +                       };
> +               };
> +       };
> +};
> +
> +&ti_csi2rx0 {
> +       status = "okay";
> +};
> +
> +&dphy0 {
> +       status = "okay";
> +};
> --
> 2.34.1
> 
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