linux-kernel - Re: [PATCH v2 2/4] arm64: dts: qcom: msm8916-samsung-j5-common: Add initial common device tree

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Message-ID: <20221106025656.5s6bwcuk2blv5tvm@builder.lan>
Date:   Sat, 5 Nov 2022 21:56:56 -0500
From:   Bjorn Andersson <andersson@...nel.org>
To:     "Lin, Meng-Bo" <linmengbo0689@...tonmail.com>
Cc:     devicetree@...r.kernel.org, Stephan Gerhold <stephan@...hold.net>,
        Nikita Travkin <nikita@...n.ru>,
        Josef W Menad <JosefWMenad@...tonmail.ch>,
        Markuss Broks <markuss.broks@...il.com>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht,
        "Lin, Andy Gross" <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Subject: Re: [PATCH v2 2/4] arm64: dts: qcom: msm8916-samsung-j5-common: Add
 initial common device tree

On Wed, Sep 28, 2022 at 12:39:46PM +0000, Lin, Meng-Bo wrote:
> The smartphones below are using the MSM8916 SoC,
> which are released in 2015-2016:
> 
> Samsung Galaxy J5 2015 (SM-J500*)
> Samsung Galaxy J5 2016 (SM-J510*)
> Samsung Galaxy J3 2016
> - SM-J3109/SM-J320Y/SM-J320YZ
> - SM-J320N0/SM-J320ZN
> - SM-J320P/SM-J320R4/SM-J320V/SM-S320VL
> 
> Add a common device tree for with initial support for:
> 

I'm afraid I don't think this, or the $subject, reflects what you're
actually doing in this change.

This should say something about moving the J5 device definition to a
common file, so that it could be reused in other related devices.

> - GPIO keys
> - SDHCI (internal and external storage)
> - USB Device Mode
> - UART (on USB connector via the SM5703 MUIC)
> - WCNSS (WiFi/BT)
> - Regulators
> 
> The three devices (some varints of J3, all other variants of J5 released
> in 2015 and J5X released in 2016) are very similar, with some differences
> in display and GPIO pins. The common parts are shared in
> msm8916-samsung-j5-common.dtsi to reduce duplication.
> 
> Signed-off-by: Lin, Meng-Bo <linmengbo0689@...tonmail.com>
> ---
>  ...6-samsung-j5.dts => msm8916-samsung-j5-common.dtsi} | 10 ++--------
>  1 file changed, 2 insertions(+), 8 deletions(-)
>  rename arch/arm64/boot/dts/qcom/{msm8916-samsung-j5.dts => msm8916-samsung-j5-common.dtsi} (94%)
> 
> diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-j5.dts b/arch/arm64/boot/dts/qcom/msm8916-samsung-j5-common.dtsi
> similarity index 94%
> rename from arch/arm64/boot/dts/qcom/msm8916-samsung-j5.dts
> rename to arch/arm64/boot/dts/qcom/msm8916-samsung-j5-common.dtsi
> index eabeed18cfaa..4f71609bf6f8 100644
> --- a/arch/arm64/boot/dts/qcom/msm8916-samsung-j5.dts
> +++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-j5-common.dtsi

With this movewe have the Makefile referencing a file that doesn't
exist. Please introduce msm8916-samsung-j5.dts in the same commit.

> @@ -1,15 +1,10 @@
>  // SPDX-License-Identifier: GPL-2.0-only
>  
> 
> -/dts-v1/;
> -
>  #include "msm8916-pm8916.dtsi"
> +
>  #include <dt-bindings/gpio/gpio.h>
>  
> 
>  / {
> -	model = "Samsung Galaxy J5 (2015)";
> -	compatible = "samsung,j5", "qcom,msm8916";
> -	chassis-type = "handset";
> -
>  	aliases {
>  		serial0 = &blsp1_uart2;
>  	};
> @@ -92,7 +87,6 @@ &usb {
>  
> 
>  &usb_hs_phy {
>  	extcon = <&pm8916_usbin>;
> -	qcom,init-seq = /bits/ 8 <0x1 0x19 0x2 0x0b>;
>  };
>  
> 
>  &smd_rpm_regulators {
> @@ -199,7 +193,7 @@ l18 {
>  };
>  
> 
>  &msmgpio {
> -	gpio_keys_default: gpio-keys-default {
> +	gpio_keys_default: gpio-keys-default-state {

This is a good, but unrelated change.

Thanks,
Bjorn

>  		pins = "gpio107", "gpio109";
>  		function = "gpio";
>  
> 
> -- 
> 
> 2.30.2
>