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Date: Tue, 28 Apr 2015 16:20:00 +0800
From: Peter Chen <peter.chen@...escale.com>
To: Shawn Guo <shawn.guo@...aro.org>,
Vagrant Cascadian <vagrant@...ian.org>,
<devicetree@...r.kernel.org>, Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
"Russell King" <linux@....linux.org.uk>,
Sascha Hauer <kernel@...gutronix.de>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM: dts: imx5: Add dts files for USB armory.
On Mon, Apr 27, 2015 at 03:37:08PM +0200, Andrej Rosano wrote:
> Hi Shawn,
>
> On Mon, Apr 27, 2015 at 07:57:48PM +0800, Shawn Guo wrote:
> > +Peter
> >
> > On Fri, Mar 27, 2015 at 01:23:00PM -0700, Vagrant Cascadian wrote:
> > > Add support for the USB armory board by Inverse Path. This board
> > > features a Freescale iMX53 SoC, 512MB RAM, and USB OTG operating in
> > > either peripheral or host mode, and 5 GPIO pins.
> > >
> > > One .dtb is generated for operating in peripheral mode, and one is
> > > generated for operating in host mode.
> >
> > Vagrant,
> >
> > Does that mean this board can work in peripheral or host mode but can
> > switch between them at run-time?
>
> The board can switch between host and peripheral mode without any
> hardware modification, but it need to reboot itself to pick up the
> corresponding dtb file. I am not sure if there is possible using the
> devicetree overlay feature to switch between the two modes runtime.
>
Not a good way, it is just one board with two different usb cables.
Current chipidea usb driver supports role switch function well, if you
have a gpio or id pin for it.
Peter
> Andrej
>
> >
> > Shawn
> >
> > >
> > > Signed-off-by: Vagrant Cascadian <vagrant@...ian.org>
> > > Cc: Andrej Rosano <andrej@...ersepath.com>
> > > Cc: Rob Herring <robh+dt@...nel.org>
> > > Cc: Pawel Moll <pawel.moll@....com>
> > > Cc: Mark Rutland <mark.rutland@....com>
> > > Cc: Ian Campbell <ijc+devicetree@...lion.org.uk>
> > > Cc: Kumar Gala <galak@...eaurora.org>
> > > Cc: Russell King <linux@....linux.org.uk>
> > > Cc: Shawn Guo <shawn.guo@...aro.org>
> > > Cc: Sascha Hauer <kernel@...gutronix.de>
> > > Cc: devicetree@...r.kernel.org
> > > Cc: linux-arm-kernel@...ts.infradead.org
> > > Cc: linux-kernel@...r.kernel.org
> > > ---
> > > arch/arm/boot/dts/Makefile | 2 +
> > > arch/arm/boot/dts/imx53-usbarmory-host_mode.dts | 17 +++
> > > arch/arm/boot/dts/imx53-usbarmory.dts | 13 ++
> > > arch/arm/boot/dts/imx53-usbarmory.dtsi | 183 ++++++++++++++++++++++++
> > > 4 files changed, 215 insertions(+)
> > > create mode 100644 arch/arm/boot/dts/imx53-usbarmory-host_mode.dts
> > > create mode 100644 arch/arm/boot/dts/imx53-usbarmory.dts
> > > create mode 100644 arch/arm/boot/dts/imx53-usbarmory.dtsi
> > >
> > > diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> > > index a1c776b..bd2258b 100644
> > > --- a/arch/arm/boot/dts/Makefile
> > > +++ b/arch/arm/boot/dts/Makefile
> > > @@ -244,6 +244,8 @@ dtb-$(CONFIG_SOC_IMX53) += \
> > > imx53-smd.dtb \
> > > imx53-tx53-x03x.dtb \
> > > imx53-tx53-x13x.dtb \
> > > + imx53-usbarmory.dtb \
> > > + imx53-usbarmory-host_mode.dtb \
> > > imx53-voipac-bsb.dtb
> > > dtb-$(CONFIG_SOC_IMX6Q) += \
> > > imx6dl-aristainetos_4.dtb \
> > > diff --git a/arch/arm/boot/dts/imx53-usbarmory-host_mode.dts b/arch/arm/boot/dts/imx53-usbarmory-host_mode.dts
> > > new file mode 100644
> > > index 0000000..a94cb1d
> > > --- /dev/null
> > > +++ b/arch/arm/boot/dts/imx53-usbarmory-host_mode.dts
> > > @@ -0,0 +1,17 @@
> > > +/*
> > > + * Copyright 2015 Inverse Path, S.r.l.
> > > + *
> > > + * The code contained herein is licensed under the GNU General Public
> > > + * License. You may obtain a copy of the GNU General Public License
> > > + * Version 2 or later at the following locations:
> > > + *
> > > + * http://www.opensource.org/licenses/gpl-license.html
> > > + * http://www.gnu.org/copyleft/gpl.html
> > > + */
> > > +
> > > +/dts-v1/;
> > > +#include "imx53-usbarmory.dtsi"
> > > +
> > > +&usbotg {
> > > + dr_mode = "host";
> > > +};
> > > diff --git a/arch/arm/boot/dts/imx53-usbarmory.dts b/arch/arm/boot/dts/imx53-usbarmory.dts
> > > new file mode 100644
> > > index 0000000..c86a4d8
> > > --- /dev/null
> > > +++ b/arch/arm/boot/dts/imx53-usbarmory.dts
> > > @@ -0,0 +1,13 @@
> > > +/*
> > > + * Copyright 2015 Inverse Path, S.r.l.
> > > + *
> > > + * The code contained herein is licensed under the GNU General Public
> > > + * License. You may obtain a copy of the GNU General Public License
> > > + * Version 2 or later at the following locations:
> > > + *
> > > + * http://www.opensource.org/licenses/gpl-license.html
> > > + * http://www.gnu.org/copyleft/gpl.html
> > > + */
> > > +
> > > +/dts-v1/;
> > > +#include "imx53-usbarmory.dtsi"
> > > diff --git a/arch/arm/boot/dts/imx53-usbarmory.dtsi b/arch/arm/boot/dts/imx53-usbarmory.dtsi
> > > new file mode 100644
> > > index 0000000..b4a9052
> > > --- /dev/null
> > > +++ b/arch/arm/boot/dts/imx53-usbarmory.dtsi
> > > @@ -0,0 +1,183 @@
> > > +/*
> > > + * Copyright 2015 Inverse Path, S.r.l.
> > > + *
> > > + * The code contained herein is licensed under the GNU General Public
> > > + * License. You may obtain a copy of the GNU General Public License
> > > + * Version 2 or later at the following locations:
> > > + *
> > > + * http://www.opensource.org/licenses/gpl-license.html
> > > + * http://www.gnu.org/copyleft/gpl.html
> > > + */
> > > +
> > > +#include "imx53.dtsi"
> > > +
> > > +/ {
> > > + model = "Inverse Path USB armory";
> > > + compatible = "inversepath,imx53-usbarmory", "fsl,imx53";
> > > +};
> > > +
> > > +/ {
> > > + chosen {
> > > + stdout-path = &uart1;
> > > + };
> > > +
> > > + memory {
> > > + reg = <0x70000000 0x20000000>;
> > > + };
> > > +
> > > + leds {
> > > + compatible = "gpio-leds";
> > > + pinctrl-names = "default";
> > > + pinctrl-0 = <&led_pin_gpio4_27>;
> > > +
> > > + user {
> > > + label = "LED";
> > > + gpios = <&gpio4 27 0>;
> > > + linux,default-trigger = "heartbeat";
> > > + };
> > > + };
> > > +};
> > > +
> > > +&esdhc1 {
> > > + pinctrl-names = "default";
> > > + pinctrl-0 = <&pinctrl_esdhc1>;
> > > + status = "okay";
> > > +};
> > > +
> > > +&iomuxc {
> > > + pinctrl-names = "default";
> > > + pinctrl-0 = <&pinctrl_hog>;
> > > +
> > > + imx53-usbarmory {
> > > + pinctrl_hog: hoggrp {
> > > + fsl,pins = <
> > > + MX53_PAD_GPIO_0__CCM_SSI_EXT1_CLK 0x80000000
> > > + MX53_PAD_GPIO_8__GPIO1_8 0x80000000
> > > + MX53_PAD_PATA_DATA14__GPIO2_14 0x80000000
> > > + MX53_PAD_PATA_DATA15__GPIO2_15 0x80000000
> > > + MX53_PAD_EIM_DA11__GPIO3_11 0x80000000
> > > + MX53_PAD_EIM_DA12__GPIO3_12 0x80000000
> > > + MX53_PAD_PATA_DA_0__GPIO7_6 0x80000000
> > > + MX53_PAD_PATA_DA_2__GPIO7_8 0x80000000
> > > + MX53_PAD_GPIO_16__GPIO7_11 0x80000000
> > > + >;
> > > + };
> > > +
> > > + led_pin_gpio4_27: led_gpio4_27@0 {
> > > + fsl,pins = <
> > > + MX53_PAD_DISP0_DAT6__GPIO4_27 0x80000000
> > > + >;
> > > + };
> > > +
> > > + pinctrl_esdhc1: esdhc1grp {
> > > + fsl,pins = <
> > > + MX53_PAD_SD1_DATA0__ESDHC1_DAT0 0x1d5
> > > + MX53_PAD_SD1_DATA1__ESDHC1_DAT1 0x1d5
> > > + MX53_PAD_SD1_DATA2__ESDHC1_DAT2 0x1d5
> > > + MX53_PAD_SD1_DATA3__ESDHC1_DAT3 0x1d5
> > > + MX53_PAD_SD1_CMD__ESDHC1_CMD 0x1d5
> > > + MX53_PAD_SD1_CLK__ESDHC1_CLK 0x1d5
> > > + >;
> > > + };
> > > +
> > > + pinctrl_i2c1: i2c1grp {
> > > + fsl,pins = <
> > > + MX53_PAD_CSI0_DAT8__I2C1_SDA 0xc0000000
> > > + MX53_PAD_CSI0_DAT9__I2C1_SCL 0xc0000000
> > > + >;
> > > + };
> > > +
> > > + pinctrl_uart1: uart1grp {
> > > + fsl,pins = <
> > > + MX53_PAD_CSI0_DAT10__UART1_TXD_MUX 0x1e4
> > > + MX53_PAD_CSI0_DAT11__UART1_RXD_MUX 0x1e4
> > > + >;
> > > + };
> > > + };
> > > +};
> > > +
> > > +&uart1 {
> > > + pinctrl-names = "default";
> > > + pinctrl-0 = <&pinctrl_uart1>;
> > > + status = "okay";
> > > +};
> > > +
> > > +&vpu {
> > > + status = "okay";
> > > +};
> > > +
> > > +&usbotg {
> > > + dr_mode = "peripheral";
> > > + status = "okay";
> > > +};
> > > +
> > > +&i2c1 {
> > > + ltc3589: pmic@34 {
> > > + compatible = "lltc,ltc3589-2";
> > > + reg = <0x34>;
> > > +
> > > + regulators {
> > > + sw1_reg: sw1 {
> > > + regulator-min-microvolt = <591930>;
> > > + regulator-max-microvolt = <1224671>;
> > > + lltc,fb-voltage-divider = <100000 158000>;
> > > + regulator-ramp-delay = <7000>;
> > > + regulator-boot-on;
> > > + regulator-always-on;
> > > + };
> > > +
> > > + sw2_reg: sw2 {
> > > + regulator-min-microvolt = <704123>;
> > > + regulator-max-microvolt = <1456803>;
> > > + lltc,fb-voltage-divider = <180000 191000>;
> > > + regulator-ramp-delay = <7000>;
> > > + regulator-boot-on;
> > > + regulator-always-on;
> > > + };
> > > +
> > > + sw3_reg: sw3 {
> > > + regulator-min-microvolt = <1341250>;
> > > + regulator-max-microvolt = <2775000>;
> > > + lltc,fb-voltage-divider = <270000 100000>;
> > > + regulator-ramp-delay = <7000>;
> > > + regulator-boot-on;
> > > + regulator-always-on;
> > > + };
> > > +
> > > + bb_out_reg: bb-out {
> > > + regulator-min-microvolt = <3387341>;
> > > + regulator-max-microvolt = <3387341>;
> > > + lltc,fb-voltage-divider = <511000 158000>;
> > > + regulator-boot-on;
> > > + regulator-always-on;
> > > + };
> > > + ldo1_reg: ldo1 {
> > > + regulator-min-microvolt = <1306329>;
> > > + regulator-max-microvolt = <1306329>;
> > > + lltc,fb-voltage-divider = <100000 158000>;
> > > + regulator-boot-on;
> > > + regulator-always-on;
> > > + };
> > > +
> > > + ldo2_reg: ldo2 {
> > > + regulator-min-microvolt = <704123>;
> > > + regulator-max-microvolt = <1456806>;
> > > + lltc,fb-voltage-divider = <180000 191000>;
> > > + regulator-ramp-delay = <7000>;
> > > + regulator-boot-on;
> > > + regulator-always-on;
> > > + };
> > > +
> > > + ldo3_reg: ldo3 {
> > > + regulator-min-microvolt = <2800000>;
> > > + regulator-max-microvolt = <2800000>;
> > > + regulator-boot-on;
> > > + };
> > > +
> > > + ldo4_reg: ldo4 {
> > > + regulator-min-microvolt = <1200000>;
> > > + regulator-max-microvolt = <3200000>;
> > > + };
> > > + };
> > > + };
> > > +};
> > > --
> > > 2.1.4
> > >
> >
> >
>
> --
> Andrej Rosano Inverse Path Srl
> <andrej@...ersepath.com> http://www.inversepath.com
>
> 0x01939B21 5BB8 574E 68E8 D841 E18F D5E9 CEAD E0CF 0193 9B21
--
Best Regards,
Peter Chen
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