linux-kernel - Re: [PATCH v5 1/3] arm64: dts: fsl: librem5: Add a device tree for the Librem5 devkit

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Date:   Thu, 18 Apr 2019 10:13:50 -0500
From:   Rob Herring <robh@...nel.org>
To:     "Angus Ainslie (Purism)" <angus@...ea.ca>
Cc:     angus.ainslie@...i.sm, m.felsch@...gutronix.de,
        Mark Rutland <mark.rutland@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Palmer Dabbelt <palmer@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Guo Ren <guoren@...nel.org>,
        Thierry Reding <treding@...dia.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Kevin Hilman <khilman@...libre.com>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Andrey Smirnov <andrew.smirnov@...il.com>,
        Jonathan Neuschäfer <j.neuschaefer@....net>,
        Jacky Bai <ping.bai@....com>,
        Aisheng Dong <aisheng.dong@....com>,
        Bruno Thomsen <bruno.thomsen@...il.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v5 1/3] arm64: dts: fsl: librem5: Add a device tree for
 the Librem5 devkit

On Wed, Apr 17, 2019 at 09:55:12AM -0700, Angus Ainslie (Purism) wrote:
> This is the development kit board for the Librem 5. The current level of
> support yields a working console and is able to boot userspace from the
> Network or eMMC.
> 
> Additional subsystems that are active :
> 
> - Both USB ports
> - SD card socket
> - WiFi usdhc
> - WWAN modem
> - GNSS
> - GPIO keys
> - LEDs
> - gyro
> - magnetometer
> - touchscreen
> - pwm
> - backlight
> - haptic motor
> 
> Signed-off-by: Angus Ainslie (Purism) <angus@...ea.ca>
> ---
>  arch/arm64/boot/dts/freescale/Makefile        |   1 +
>  .../dts/freescale/imx8mq-librem5-devkit.dts   | 833 ++++++++++++++++++
>  2 files changed, 834 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> 
> diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
> index 0bd122f60549..c043aca66572 100644
> --- a/arch/arm64/boot/dts/freescale/Makefile
> +++ b/arch/arm64/boot/dts/freescale/Makefile
> @@ -22,6 +22,7 @@ dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2160a-rdb.dtb
>  
>  dtb-$(CONFIG_ARCH_MXC) += imx8mm-evk.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx8mq-evk.dtb
> +dtb-$(CONFIG_ARCH_MXC) += imx8mq-librem5-devkit.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx8mq-zii-ultra-rmb3.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx8mq-zii-ultra-zest.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx8qxp-mek.dtb
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> new file mode 100644
> index 000000000000..846a72dc7640
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts

> +&usb3_phy0 {
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +	status = "okay";
> +
> +	port@0 {
> +		reg = <0>;
> +
> +		typec_hs: endpoint {
> +			remote-endpoint = <&usb_con_hs>;
> +		};
> +	};
> +
> +	port@1 {
> +		reg = <1>;
> +
> +		typec_ss: endpoint {
> +			remote-endpoint = <&usb_con_ss>;
> +		};
> +	};

This is wrong. The graph should be between the USB controller and the 
connector. The phy is not involved.

> +};
> +
> +&usb3_phy1 {
> +	status = "okay";
> +};
> +
> +&usb_dwc3_0 {
> +	extcon = <&typec_ptn5100>;

extcon is deprecated and you should only have the usb-connector binding. 
>From the controller, you can walk the graph to the connector.

> +	dr_mode = "otg";
> +	status = "okay";
> +};