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 10:44:50 -0700
From:   Angus Ainslie <angus@...ea.ca>
To:     Rob Herring <robh@...nel.org>
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

Hi Rob,


On 2019-04-18 08:13, Rob Herring wrote:
> 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.
> 

I not sure that I'm clear on what you mean. Here's what I think you want 
it changed to.

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts 
b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
index 846a72dc7640..7b8770fdc5fb 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
@@ -755,51 +755,50 @@
  };

  &uart4 { /* BT */
         pinctrl-names = "default";
         pinctrl-0 = <&pinctrl_uart4>, <&pinctrl_bt>;
         uart-has-rtscts;
         status = "okay";
  };

  &usb3_phy0 {
+       status = "okay";
+};
+
+&usb3_phy1 {
+       status = "okay";
+};
+
+&usb_dwc3_0 {
         #address-cells = <1>;
         #size-cells = <0>;
+       dr_mode = "otg";
         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>;
                 };
         };
  };

-&usb3_phy1 {
-       status = "okay";
-};
-
-&usb_dwc3_0 {
-       extcon = <&typec_ptn5100>;
-       dr_mode = "otg";
-       status = "okay";
-};
-
  &usb_dwc3_1 {
         dr_mode = "host";
         status = "okay";
  };



Thanks
Angus

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