linux-kernel - Re: [PATCH 3/3] arm64: dts: qcom: msm8953: Add device tree for Billion Capture+

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Message-ID: <557166bd-cbe2-4a7b-bd6c-8daec1cecc3d@oss.qualcomm.com>
Date: Sat, 21 Jun 2025 12:16:58 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: cristian_ci@...tonmail.com, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
        phone-devel@...r.kernel.org
Subject: Re: [PATCH 3/3] arm64: dts: qcom: msm8953: Add device tree for
 Billion Capture+

On 6/20/25 11:51 PM, Cristian Cozzolino via B4 Relay wrote:
> From: Cristian Cozzolino <cristian_ci@...tonmail.com>
> 
> Billion Capture+ (flipkart,rimob) is a smartphone released in 2017, based
> on Snapdragon 625 (MSM8953) SoC.
> 
> Add a device tree with initial support for:
> 
> - GPIO keys
> - SDHCI (internal and external storage)
> - USB Device Mode
> - Regulators
> - Simple framebuffer
> 
> Signed-off-by: Cristian Cozzolino <cristian_ci@...tonmail.com>
> ---

[...]

> +
> +	gpio-keys {
> +		compatible = "gpio-keys";
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&gpio_key_default>;

property-n
property-names

please

[...]

> +	reserved-memory {
> +		qseecom@0 {
> +			reg = <0x00 0x84a00000 0x00 0x1900000>;

'0x0'

[...]

> +
> +&sdhc_1 {
> +	vmmc-supply = <&pm8953_l8>;
> +	vqmmc-supply = <&pm8953_l5>;

you should add regulator-allow-set-load to these vregs

[...]

> +&tlmm {
> +	gpio-reserved-ranges = <0 4>,

These GPIOs correspond to I2C/SPI_1

<135 4>;

And these correspond to I2C/SPI_7

Without much more knowledge, I would guesstimate one of them is
for a fingerprint reader and the other for NFC eSE

Konrad