From 05306b848b367e326dc76e7552192056338ac6ad Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 25 May 2017 09:15:58 -0700 Subject: [PATCH] ARM: dts: Configure USB host for 37xx-evm Looks like nobody bothered to configure USB host for 37xx-evm when we converted things to device tree, so let's add it. This is similar to beagleboard configuration with few extra quirks to configure the port. And as with beagleboard, OHCI won't work because there is no USB LS/FS PHY. A HS USB hub is needed to use devices like keyboard and mice. Acked-by: Roger Quadros Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/omap3-evm-37xx.dts | 102 ++++++++++++++++++++++++++++++++ arch/arm/boot/dts/omap3-evm-common.dtsi | 33 +++++++++++ 2 files changed, 135 insertions(+) diff --git a/arch/arm/boot/dts/omap3-evm-37xx.dts b/arch/arm/boot/dts/omap3-evm-37xx.dts index 4f9a765..c963b31 100644 --- a/arch/arm/boot/dts/omap3-evm-37xx.dts +++ b/arch/arm/boot/dts/omap3-evm-37xx.dts @@ -34,7 +34,15 @@ >; }; +&hsusb2_phy { + pinctrl-names = "default"; + pinctrl-0 = <&ehci_phy_pins>; +}; + &omap3_pmx_core { + pinctrl-names = "default"; + pinctrl-0 = <&on_board_gpio_61 &hsusb2_pins>; + dss_dpi_pins1: pinmux_dss_dpi_pins2 { pinctrl-single,pins = < OMAP3_CORE1_IOPAD(0x20d4, PIN_OUTPUT | MUX_MODE0) /* dss_pclk.dss_pclk */ @@ -98,6 +106,37 @@ >; }; + /* Devices are routed with gpmc_nbe1.gpio_61 to on-board devices */ + on_board_gpio_61: pinmux_ehci_port_select_pins { + pinctrl-single,pins = < + OMAP3_CORE1_IOPAD(0x20c8, PIN_OUTPUT | MUX_MODE4) + >; + }; + + /* Used by OHCI and EHCI. OHCI won't work without external phy */ + hsusb2_pins: pinmux_hsusb2_pins { + pinctrl-single,pins = < + + /* mcspi1_cs3.hsusb2_data2 */ + OMAP3_CORE1_IOPAD(0x21d4, PIN_INPUT_PULLDOWN | MUX_MODE3) + + /* mcspi2_clk.hsusb2_data7 */ + OMAP3_CORE1_IOPAD(0x21d6, PIN_INPUT_PULLDOWN | MUX_MODE3) + + /* mcspi2_simo.hsusb2_data4 */ + OMAP3_CORE1_IOPAD(0x21d8, PIN_INPUT_PULLDOWN | MUX_MODE3) + + /* mcspi2_somi.hsusb2_data5 */ + OMAP3_CORE1_IOPAD(0x21da, PIN_INPUT_PULLDOWN | MUX_MODE3) + + /* mcspi2_cs0.hsusb2_data6 */ + OMAP3_CORE1_IOPAD(0x21dc, PIN_INPUT_PULLDOWN | MUX_MODE3) + + /* mcspi2_cs1.hsusb2_data3 */ + OMAP3_CORE1_IOPAD(0x21de, PIN_INPUT_PULLDOWN | MUX_MODE3) + >; + }; + wl12xx_gpio: pinmux_wl12xx_gpio { pinctrl-single,pins = < OMAP3_CORE1_IOPAD(0x2180, PIN_OUTPUT | MUX_MODE4) /* uart1_cts.gpio_150 */ @@ -112,6 +151,46 @@ }; }; +&omap3_pmx_core2 { + pinctrl-names = "default"; + pinctrl-0 = <&hsusb2_2_pins>; + + ehci_phy_pins: pinmux_ehci_phy_pins { + pinctrl-single,pins = < + + /* EHCI PHY reset GPIO etk_d7.gpio_21 */ + OMAP3630_CORE2_IOPAD(0x25ea, PIN_OUTPUT | MUX_MODE4) + + /* EHCI VBUS etk_d8.gpio_22 */ + OMAP3630_CORE2_IOPAD(0x25ec, PIN_OUTPUT | MUX_MODE4) + >; + }; + + /* Used by OHCI and EHCI. OHCI won't work without external phy */ + hsusb2_2_pins: pinmux_hsusb2_2_pins { + pinctrl-single,pins = < + + /* etk_d10.hsusb2_clk */ + OMAP3630_CORE2_IOPAD(0x25f0, PIN_OUTPUT | MUX_MODE3) + + /* etk_d11.hsusb2_stp */ + OMAP3630_CORE2_IOPAD(0x25f2, PIN_OUTPUT | MUX_MODE3) + + /* etk_d12.hsusb2_dir */ + OMAP3630_CORE2_IOPAD(0x25f4, PIN_INPUT_PULLDOWN | MUX_MODE3) + + /* etk_d13.hsusb2_nxt */ + OMAP3630_CORE2_IOPAD(0x25f6, PIN_INPUT_PULLDOWN | MUX_MODE3) + + /* etk_d14.hsusb2_data0 */ + OMAP3630_CORE2_IOPAD(0x25f8, PIN_INPUT_PULLDOWN | MUX_MODE3) + + /* etk_d15.hsusb2_data1 */ + OMAP3630_CORE2_IOPAD(0x25fa, PIN_INPUT_PULLDOWN | MUX_MODE3) + >; + }; +}; + &omap3_pmx_wkup { dss_dpi_pins2: pinmux_dss_dpi_pins1 { pinctrl-single,pins = < @@ -153,6 +232,29 @@ pinctrl-0 = <&uart3_pins>; }; +/* + * GPIO_61 (nUSB2_EN_1V8) must be low to enable on-board EHCI USB2 interface + * for bus switch SN74CB3Q3384A, level-shifter SN74AVC16T245DGGR, and 1.8V. + */ +&gpio2 { + en_usb2_port { + gpio-hog; + gpios = <29 GPIO_ACTIVE_HIGH>; /* gpio_61 */ + output-low; + line-name = "enable usb2 port"; + }; +}; + +/* T2_GPIO_2 low to route GPIO_61 to on-board devices */ +&twl_gpio { + en_on_board_gpio_61 { + gpio-hog; + gpios = <2 GPIO_ACTIVE_HIGH>; + output-low; + line-name = "en_hsusb2_clk"; + }; +}; + &gpmc { ranges = <0 0 0x30000000 0x1000000>, /* CS0: 16MB for NAND */ <5 0 0x2c000000 0x01000000>; diff --git a/arch/arm/boot/dts/omap3-evm-common.dtsi b/arch/arm/boot/dts/omap3-evm-common.dtsi index 7780e25..2b1d697 100644 --- a/arch/arm/boot/dts/omap3-evm-common.dtsi +++ b/arch/arm/boot/dts/omap3-evm-common.dtsi @@ -12,6 +12,24 @@ }; }; + /* HS USB Port 2 Power */ + hsusb2_power: hsusb2_power_reg { + compatible = "regulator-fixed"; + regulator-name = "hsusb2_vbus"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + gpio = <&gpio1 22 GPIO_ACTIVE_HIGH>; /* gpio_22 */ + startup-delay-us = <70000>; + enable-active-high; + }; + + /* HS USB Host PHY on PORT 2 */ + hsusb2_phy: hsusb2_phy { + compatible = "usb-nop-xceiv"; + reset-gpios = <&gpio1 21 GPIO_ACTIVE_LOW>; /* gpio_21 */ + vcc-supply = <&hsusb2_power>; + }; + leds { compatible = "gpio-leds"; ledb { @@ -142,6 +160,14 @@ >; }; +&usbhshost { + port2-mode = "ehci-phy"; +}; + +&usbhsehci { + phys = <0 &hsusb2_phy>; +}; + &usb_otg_hs { interface-type = <0>; usb-phy = <&usb2_phy>; @@ -158,3 +184,10 @@ reg = <5 0 0xff>; }; }; + +&vaux2 { + regulator-name = "usb_1v8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-always-on; +}; -- 2.7.4