linux-kernel - Re: [PATCH 2/2] arm64: dts: qcom: Add basic support for LG G4 (H815)

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Date: Wed, 3 Apr 2024 19:37:53 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Alexander Reimelt <alexander.reimelt@...teo.de>, andersson@...nel.org,
 pvorel@...e.cz, konrad.dybcio@...aro.org, robh+dt@...nel.org,
 krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] arm64: dts: qcom: Add basic support for LG G4 (H815)

On 03/04/2024 12:43, Alexander Reimelt wrote:
> To make it easier for downstream projects and avoid duplication of work.
> Makes the device bootable and enables all buttons, most regulators, hall sensor, eMMC and SD-Card.
> 
> Signed-off-by: Alexander Reimelt <alexander.reimelt@...teo.de>
> ---
>  arch/arm64/boot/dts/qcom/Makefile            |   1 +
>  arch/arm64/boot/dts/qcom/msm8992-lg-h815.dts | 422 +++++++++++++++++++
>  2 files changed, 423 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/qcom/msm8992-lg-h815.dts
> 

Please use subject prefixes matching the subsystem. You can get them for
example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory
your patch is touching.

> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> index 7d40ec5e7d21..5b7f8741006f 100644
> --- a/arch/arm64/boot/dts/qcom/Makefile
> +++ b/arch/arm64/boot/dts/qcom/Makefile
> @@ -62,6 +62,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= msm8956-sony-xperia-loire-kugo.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8956-sony-xperia-loire-suzu.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8992-lg-bullhead-rev-10.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8992-lg-bullhead-rev-101.dtb
> +dtb-$(CONFIG_ARCH_QCOM)	+= msm8992-lg-h815.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8992-msft-lumia-octagon-talkman.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8992-xiaomi-libra.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8994-huawei-angler-rev-101.dtb
> diff --git a/arch/arm64/boot/dts/qcom/msm8992-lg-h815.dts b/arch/arm64/boot/dts/qcom/msm8992-lg-h815.dts
> new file mode 100644
> index 000000000000..b7fa48337e25
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/msm8992-lg-h815.dts
> @@ -0,0 +1,422 @@
> +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +/*
> + * MSM8992 LG G4 (h815) device tree.
> + *
> + * Copyright (c) 2024, Alexander Reimelt <alexander.reimelt@...teo.de>
> + */
> +
> +/dts-v1/;
> +
> +#include "msm8992.dtsi"
> +#include "pm8994.dtsi"
> +#include "pmi8994.dtsi"
> +#include <dt-bindings/leds/common.h>
> +
> +/* different mapping */
> +/delete-node/ &cont_splash_mem;
> +
> +/* disabled downstream */
> +/delete-node/ &dfps_data_mem;
> +
> +&CPU0 {
> +	enable-method = "spin-table";
> +};
> +
> +&CPU1 {
> +	enable-method = "spin-table";
> +};
> +
> +&CPU2 {
> +	enable-method = "spin-table";
> +};
> +
> +&CPU3 {
> +	enable-method = "spin-table";
> +};
> +
> +&CPU4 {
> +	enable-method = "spin-table";
> +};
> +
> +&CPU5 {
> +	enable-method = "spin-table";
> +};

That's wrong order. Top level nodes goes after node deletions. Please
observe DTS coding style.

> +
> +/ {
> +	model = "LG G4 (International)";
> +	compatible = "lg,h815", "qcom,msm8992";
> +	chassis-type = "handset";
> +
> +	qcom,msm-id = <251 0>;
> +	qcom,pmic-id = <0x10009 0x1000a 0x00 0x00>;
> +	qcom,board-id = <0xb64 0>;
> +
> +	/* psci is broken */
> +	/delete-node/ psci;
> +
> +	chosen {
> +		bootargs = "earlycon=tty0 console=tty0";

Drop

> +	};
> +
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		spin-table@...0000 {
> +			reg = <0 0x6000000 0 0x1000>;
> +			no-map;
> +		};
> +
> +		ramoops@...0000 {
> +			compatible = "ramoops";
> +			reg = <0x0 0xff00000 0x0 0x100000>;
> +			console-size = <0x20000>;
> +			pmsg-size = <0x20000>;
> +			record-size = <0x10000>;
> +			ecc-size = <0x10>;
> +		};
> +
> +		cont_splash_mem: fb@...0000 {
> +			compatible = "framebuffer";
> +			reg = <0 0x3400000 0 0xc00000>;
> +			no-map;
> +		};
> +
> +		crash_fb_mem: crash_fb@...0000 {

No undercores in node names. Please open DTS coding style and follow it.

...

> +
> +&pm8994_resin {
> +	status = "okay";

status is the last property.



Best regards,
Krzysztof