Re: [PATCH v3 2/2] arm64: dts: qcom: sm8250-asus-obiwan: Add ASUS ROG Phone 3

[Konrad Dybcio]

On 3/11/26 3:43 AM, Alexander Koskovich wrote:
> Supported functionality as of this initial submission:
> * Armor Case & Dock Hall Sensors
> * Camera flash/torch LED
> * Display (Tianma TA066VVHM03)
> * DisplayPort Alt Mode
> * Macro Camera (OV8856)
> * GPU (Adreno 650)
> * NFC (NXP PN553)
> * Power Button, Volume Keys
> * Regulators
> * Remoteprocs (ADSP, CDSP, SLPI)
> * UFS
> * USB
> * Video Codec (Venus)
> * Wi-Fi / Bluetooth (QCA6390)
> 
> Signed-off-by: Alexander Koskovich <akoskovich@xxxxx>
> ---

[...]

> +	/*
> +	 * There are also ER & EVB boards, but those have meaningful hardware
> +	 * differences that make them not compatible with this devicetree.
> +	 */
> +	qcom,board-id = <31 0>, /* ER2 */
> +			<40 0>, /* PR */
> +			<41 0>, /* PR2 */
> +			<50 0>; /* MP */

I would guesstimate MP is Mass Production and everything before that is
engineering samples.. perhaps that doesn't hurt - maybe some curious Asus 
engineer swings by one day!

[...]


> +&i2c1 {
> +	status = "okay";

Please ensure 'status' is the last property, preceded by a \n

> +	clock-frequency = <400000>;
> +
> +	nfc@28 {
> +		compatible = "nxp,pn553",
> +			     "nxp,nxp-nci-i2c";
> +		reg = <0x28>;
> +
> +		interrupt-parent = <&tlmm>;
> +		interrupts = <111 IRQ_TYPE_EDGE_RISING>;

interrupts-extended = <&tlmm 111 ...>


> +
> +		enable-gpios = <&tlmm 6 GPIO_ACTIVE_HIGH>;
> +		firmware-gpios = <&tlmm 110 GPIO_ACTIVE_HIGH>;
> +
> +		pinctrl-0 = <&nfc_en_default>,
> +			    <&nfc_clk_req_default>,
> +			    <&nfc_firmware_default>,
> +			    <&nfc_irq_default>;

You can bunch them up into:

nfc_default_state: xyz-abc-state {
	nfc-en-pins {
		pins = "....
		...
	};

	nfc-clk-req-pins {
		pins = "...
	};
};


> +	/*
> +	 * When low the USB 2 data lanes are routed to the bottom USB port.
> +	 * When high they are routed to the pogo port on the side of the device.
> +	 */
> +	usb2_mux_en: usb2-mux-en-default-state {
> +		pins = "gpio9";
> +		function = PMIC_GPIO_FUNC_NORMAL;
> +		power-source = <0>;
> +		output-low;
> +	};


[...]

> +		source-pdos = <PDO_FIXED(5000, 900,
> +					 PDO_FIXED_DUAL_ROLE |
> +					 PDO_FIXED_USB_COMM |
> +					 PDO_FIXED_DATA_SWAP)>;
> +
> +		sink-pdos = <PDO_FIXED(5000, 3000,
> +				       PDO_FIXED_DUAL_ROLE |
> +				       PDO_FIXED_USB_COMM |
> +				       PDO_FIXED_DATA_SWAP)
> +			     PDO_FIXED(9000, 3000, 0)
> +			     PDO_FIXED(12000, 2250, 0)>;

Both ports have the same PDOs - will this kaboom if you plug in two chargers?

[...]

> +	wlan_en_default: wlan-default-state {
> +		pins = "gpio20";
> +		function = "gpio";
> +		drive-strength = <16>;
> +		output-low;
> +		bias-pull-up;
> +	};
> +
> +	bt_en_default: bt-default-state {
> +		pins = "gpio21";
> +		function = "gpio";
> +		drive-strength = <16>;
> +		output-low;
> +		bias-pull-up;
> +	};

you can drop output-low from both - the PMU driver will set it via the
GPIO APIs

[...]

> +&usb_2 {
> +	pinctrl-0 = <&rt1715_mux_en>, <&usb2_mux_en>;
> +	pinctrl-names = "default";
> +
> +	/*
> +	 * Disable USB3 clock requirement as the bottom port only supports USB2.
> +	 * The USB3 lanes are routed through the pogo connector on this board for
> +	 * use with accessories, so will need to revisit this when we start to add
> +	 * support for those.
> +	 */
> +	qcom,select-utmi-as-pipe-clk;

So, is that right?

                                  ┌───────┐                    
                                  │ POGO  │                    
                                  └──┬──┬─┘                    
                   superspeed        │  │                      
       ┌─────────────────────────────┘  │                      
       │                                │                      
┌──────┼─┐      highspeed               │                      
│ DWC3_2 ┼─────────────────────┐   ┌────┴──┐                   
└────────┘                     └───┤  MUX  ┼───────PM8150_GPIO9
                 ┌─────────┐       └──┬────┘                   
                 │ GPIO170 │          │                        
                 └─────────┘          │                        
                      │               │                        
┌────────┐ RXTX   ┌───┴──┐        ┌───┴──┐                     
│ UART   ┼────────│ MUX  ┼────────┤USB-C2│                     
└────────┘        └──┬───┘        └──────┘                     
                     │                                         
                     ▼                                         
                    GND                                        

Konrad