linux-kernel - Re: [PATCH V2 3/3] arm64: dts: ti: k3-am68-sk: Add support for AM68 SK base board

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Message-ID: <8b56062f-946d-b28d-a050-99dbf4c856df@linaro.org>
Date:   Mon, 7 Nov 2022 14:35:47 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Sinthu Raja <sinthu.raja@...tralsolutions.com>,
        Nishanth Menon <nm@...com>, Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Vignesh Raghavendra <vigneshr@...com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Sinthu Raja <sinthu.raja@...com>
Subject: Re: [PATCH V2 3/3] arm64: dts: ti: k3-am68-sk: Add support for AM68
 SK base board

On 07/11/2022 13:38, Sinthu Raja wrote:
> From: Sinthu Raja <sinthu.raja@...com>
> 
> The SK architecture comprises of baseboard and a SOM board. The
> AM68 Starter Kit's baseboard contains most of the actual connectors,
> power supply etc. The System on Module (SoM) is plugged on to the base
> board. Therefore, add support for peripherals brought out in the base
> board.
> 
> Schematics: https://www.ti.com/lit/zip/SPRR463
> 
> Signed-off-by: Sinthu Raja <sinthu.raja@...com>
> ---
> 
> Changes in V2:
> *Addressed the review comments:
>  - Updated the commit description.
>  - Updated the regulator nodes: fixedregulator to "regulator-"
>  - Updated the commit $subject to align with rest of the commits.
>  - Dropped the blank lines
>  - Changed the node names that are added with underscore("_") with "-"
> 
> V1: https://lore.kernel.org/linux-arm-kernel/20221018123849.23695-3-sinthu.raja@ti.com/
>  
>  arch/arm64/boot/dts/ti/Makefile               |   2 +
>  .../boot/dts/ti/k3-am68-sk-base-board.dts     | 447 ++++++++++++++++++
>  2 files changed, 449 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
> 
> diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
> index 4555a5be2257..eeeebda30e3d 100644
> --- a/arch/arm64/boot/dts/ti/Makefile
> +++ b/arch/arm64/boot/dts/ti/Makefile
> @@ -12,6 +12,8 @@ dtb-$(CONFIG_ARCH_K3) += k3-am6528-iot2050-basic-pg2.dtb
>  dtb-$(CONFIG_ARCH_K3) += k3-am6548-iot2050-advanced.dtb
>  dtb-$(CONFIG_ARCH_K3) += k3-am6548-iot2050-advanced-pg2.dtb
>  
> +dtb-$(CONFIG_ARCH_K3) += k3-am68-sk-base-board.dtb
> +
>  dtb-$(CONFIG_ARCH_K3) += k3-j721e-common-proc-board.dtb
>  dtb-$(CONFIG_ARCH_K3) += k3-j721e-sk.dtb
>  
> diff --git a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
> new file mode 100644
> index 000000000000..ad727495e99b
> --- /dev/null
> +++ b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
> @@ -0,0 +1,447 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
> + *
> + * Base Board: https://www.ti.com/lit/zip/SPRR463
> + */
> +
> +/dts-v1/;
> +
> +#include "k3-am68-sk-som.dtsi"
> +#include <dt-bindings/net/ti-dp83867.h>
> +#include <dt-bindings/phy/phy-cadence.h>
> +#include <dt-bindings/phy/phy.h>
> +#include <dt-bindings/mux/ti-serdes.h>
> +
> +/ {
> +	compatible = "ti,am68-sk", "ti,j721s2";
> +	model = "Texas Instruments AM68 SK";
> +
> +	chosen {
> +		stdout-path = "serial2:115200n8";
> +	};
> +
> +	aliases {
> +		serial2 = &main_uart8;
> +		mmc1 = &main_sdhci1;
> +		can0 = &mcu_mcan0;
> +		can1 = &mcu_mcan1;
> +		can2 = &main_mcan6;
> +		can3 = &main_mcan7;
> +	};
> +
> +	vusb_main: regulator-vusb-main5v0 {
> +		/* USB MAIN INPUT 5V DC */
> +		compatible = "regulator-fixed";
> +		regulator-name = "vusb-main5v0";
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +		regulator-always-on;
> +		regulator-boot-on;
> +	};
> +
> +	vsys_3v3: regulator-vsys3v3 {
> +		/* Output of LM5141 */
> +		compatible = "regulator-fixed";
> +		regulator-name = "vsys_3v3";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		vin-supply = <&vusb_main>;
> +		regulator-always-on;
> +		regulator-boot-on;
> +	};
> +
> +	vdd_mmc1: regulator-sd {
> +		/* Output of TPS22918 */
> +		compatible = "regulator-fixed";
> +		regulator-name = "vdd_mmc1";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		regulator-boot-on;
> +		enable-active-high;
> +		vin-supply = <&vsys_3v3>;
> +		gpio = <&exp1 10 GPIO_ACTIVE_HIGH>;
> +	};
> +
> +	vdd_sd_dv: gpio-regulator-tlv71033 {

regulator-tlv... not gpio-regulator.

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

> +		/* Output of TLV71033 */
> +		compatible = "regulator-gpio";
> +		regulator-name = "tlv71033";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&vdd_sd_dv_pins_default>;
> +		regulator-min-microvolt = <1800000>;
> +		regulator-max-microvolt = <3300000>;
> +		regulator-boot-on;
> +		vin-supply = <&vsys_3v3>;
> +		gpios = <&main_gpio0 49 GPIO_ACTIVE_HIGH>;
> +		states = <1800000 0x0>,
> +			 <3300000 0x1>;
> +	};
> +
Best regards,
Krzysztof