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

Rob Herring
2019-04-18T15:13:54Z

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@akkea.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";
> +};