From 8aec5fc1d4d881fe446addb94309efb39d4e5b23 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Mon, 26 Mar 2018 23:17:42 +0200 Subject: ARM64: dts: meson-gxl: add USB host support This adds USB host support to the Meson GXL SoC. A dwc3 controller is used for host-mode, while a dwc2 controller (not added in this patch because I could not get it working) is used for device-mode only. The dwc3 controller's internal roothub has two USB2 ports enabled but no USB3 port. Each of the ports is supplied by a separate PHY. The USB pins are connected to the SoC's USBHOST_A and USBOTG_B pins. Due to the way the roothub works internally the USB PHYs are left enabled. When the dwc3 controller is disabled the PHY is never powered on so it does not draw any extra power. However, when the dwc3 host controller is enabled then all PHYs also have to be enabled, otherwise USB devices will not be detected (regardless of whether they are plugged into an enabled port or not). This means that only the dwc3 controller has to be enabled on boards with USB support (instead of requiring all boards to enable the PHYs additionally with the chance of forgetting to enable one and breaking all other ports with that as well). This also adds the USB3 PHY which currently only does some basic initialization. That however is required because without it high-speed devices (like USB thumb drives) do not work on some devices (probably because the bootloader does not configure the USB3 PHY registers). Signed-off-by: Martin Blumenstingl Signed-off-by: Kevin Hilman --- arch/arm64/boot/dts/amlogic/meson-gxl.dtsi | 61 ++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) (limited to 'arch') diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi index e1a39cbed8c9..dba365ed4bd5 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi @@ -20,6 +20,67 @@ no-map; }; }; + + soc { + usb0: usb@c9000000 { + status = "disabled"; + compatible = "amlogic,meson-gxl-dwc3"; + #address-cells = <2>; + #size-cells = <2>; + ranges; + + clocks = <&clkc CLKID_USB>; + clock-names = "usb_general"; + resets = <&reset RESET_USB_OTG>; + reset-names = "usb_otg"; + + dwc3: dwc3@c9000000 { + compatible = "snps,dwc3"; + reg = <0x0 0xc9000000 0x0 0x100000>; + interrupts = ; + dr_mode = "host"; + maximum-speed = "high-speed"; + snps,dis_u2_susphy_quirk; + phys = <&usb3_phy>, <&usb2_phy0>, <&usb2_phy1>; + }; + }; + }; +}; + +&apb { + usb2_phy0: phy@78000 { + compatible = "amlogic,meson-gxl-usb2-phy"; + #phy-cells = <0>; + reg = <0x0 0x78000 0x0 0x20>; + clocks = <&clkc CLKID_USB>; + clock-names = "phy"; + resets = <&reset RESET_USB_OTG>; + reset-names = "phy"; + status = "okay"; + }; + + usb2_phy1: phy@78020 { + compatible = "amlogic,meson-gxl-usb2-phy"; + #phy-cells = <0>; + reg = <0x0 0x78020 0x0 0x20>; + clocks = <&clkc CLKID_USB>; + clock-names = "phy"; + resets = <&reset RESET_USB_OTG>; + reset-names = "phy"; + status = "okay"; + }; + + usb3_phy: phy@78080 { + compatible = "amlogic,meson-gxl-usb3-phy"; + #phy-cells = <0>; + reg = <0x0 0x78080 0x0 0x20>; + interrupts = ; + clocks = <&clkc CLKID_USB>, <&clkc_AO CLKID_AO_CEC_32K>; + clock-names = "phy", "peripheral"; + resets = <&reset RESET_USB_OTG>, <&reset RESET_USB_OTG>; + reset-names = "phy", "peripheral"; + status = "okay"; + }; }; ðmac { -- cgit v1.2.3 From 458baa95c86406c81c6ebac0a98d1689075a3ec4 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Mon, 26 Mar 2018 23:17:43 +0200 Subject: ARM64: dts: meson-gxm: add GXM specific USB host configuration The USB configuration on GXM is slightly different than on GXL. The dwc3 controller's internal hub has three USB2 ports (instead of 2 on GXL) along with a dedicated USB2 PHY for this port. However, it seems that there are no pins on GXM which would allow connecting the third port to a physical USB port. Passing the third PHY is required though, because without it none of the other USB ports is working (this seems to be a limitation of how the internal USB hub works, if one PHY is disabled then no USB port works). Signed-off-by: Martin Blumenstingl Signed-off-by: Kevin Hilman --- arch/arm64/boot/dts/amlogic/meson-gxm.dtsi | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'arch') diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi index d076a7c425dd..247888d68a3a 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi @@ -80,6 +80,19 @@ }; }; +&apb { + usb2_phy2: phy@78040 { + compatible = "amlogic,meson-gxl-usb2-phy"; + #phy-cells = <0>; + reg = <0x0 0x78040 0x0 0x20>; + clocks = <&clkc CLKID_USB>; + clock-names = "phy"; + resets = <&reset RESET_USB_OTG>; + reset-names = "phy"; + status = "okay"; + }; +}; + &clkc_AO { compatible = "amlogic,meson-gxm-aoclkc", "amlogic,meson-gx-aoclkc"; }; @@ -100,3 +113,7 @@ &hdmi_tx { compatible = "amlogic,meson-gxm-dw-hdmi", "amlogic,meson-gx-dw-hdmi"; }; + +&dwc3 { + phys = <&usb3_phy>, <&usb2_phy0>, <&usb2_phy1>, <&usb2_phy2>; +}; -- cgit v1.2.3 From b9f07cb4f41fccbe7616482015d28e6e26aec3a3 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Mon, 26 Mar 2018 23:17:44 +0200 Subject: ARM64: dts: meson-gxl-s905x-p212: enable the USB controller All boards based on the P212 reference design (the P212 reference board itself and the Khadas VIM) have USB connectors (in case of the Khadas VIM the first port is exposed through the USB Type-C connector, the second port is connected to a 4-port USB hub). This enables the USB controller on these boards to make the USB ports actually usable. Signed-off-by: Martin Blumenstingl Signed-off-by: Kevin Hilman --- arch/arm64/boot/dts/amlogic/meson-gxl-s905x-p212.dtsi | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch') diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-p212.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-p212.dtsi index 0a0953fbc7d4..0cfd701809de 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-p212.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-p212.dtsi @@ -185,3 +185,7 @@ pinctrl-0 = <&uart_ao_a_pins>; pinctrl-names = "default"; }; + +&usb0 { + status = "okay"; +}; -- cgit v1.2.3 From 972cd12a027256061c19c164021f2a771e860438 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Mon, 26 Mar 2018 23:17:45 +0200 Subject: ARM64: dts: meson-gx-p23x-q20x: enable the USB controller All S905D (GXL) and S912 (GXM) reference boards (namely these are P230, P231, Q200 and Q201) provide USB connectors. This enables the USB controller on these boards to make the USB ports actually usable. Signed-off-by: Martin Blumenstingl Signed-off-by: Kevin Hilman --- arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch') diff --git a/arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi index 4eef36b22538..88e712ea757a 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi @@ -212,3 +212,7 @@ pinctrl-0 = <&uart_ao_a_pins>; pinctrl-names = "default"; }; + +&usb0 { + status = "okay"; +}; -- cgit v1.2.3 From b83687f359d9b4128073f06ab7a06489eb04aa7c Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Mon, 26 Mar 2018 23:17:46 +0200 Subject: ARM64: dts: meson-gxl-s905x-libretech-cc: enable the USB controller The LibreTech CC ("Le Potato") board provides four USB connectors. These are provided by a hub which is connected to the SoC's USB controller. Enable the SoC's USB controller to make the USB ports usable. Also turn on the HDMI_5V regulator when powering on the PHY because (even though it's not shown in the schematics) HDMI_5V also supplies the USB VBUS. Signed-off-by: Martin Blumenstingl Signed-off-by: Kevin Hilman --- arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'arch') diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts index 22bf37404ff1..3e3eb31748a3 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts +++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts @@ -271,3 +271,15 @@ pinctrl-0 = <&uart_ao_a_pins>; pinctrl-names = "default"; }; + +&usb0 { + status = "okay"; +}; + +&usb2_phy0 { + /* + * even though the schematics don't show it: + * HDMI_5V is also used as supply for the USB VBUS. + */ + phy-supply = <&hdmi_5v>; +}; -- cgit v1.2.3 From 55ef32249bb647c6b64adcf943918d302a0020a7 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Mon, 26 Mar 2018 23:17:47 +0200 Subject: ARM64: dts: meson-gxl-nexbox-a95x: enable the USB controller The Nexbox A95X provides two USB ports. Enable the SoC's USB controller on this board to make these USB ports usable. Signed-off-by: Martin Blumenstingl Signed-off-by: Kevin Hilman --- arch/arm64/boot/dts/amlogic/meson-gxl-s905x-nexbox-a95x.dts | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch') diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-nexbox-a95x.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-nexbox-a95x.dts index 69c721a70e44..6739697be1de 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-nexbox-a95x.dts +++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-nexbox-a95x.dts @@ -215,3 +215,7 @@ pinctrl-0 = <&uart_ao_a_pins>; pinctrl-names = "default"; }; + +&usb0 { + status = "okay"; +}; -- cgit v1.2.3 From 4b7b0d7b25538d2ad421a1041267d5208d3425bc Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Mon, 26 Mar 2018 23:17:48 +0200 Subject: ARM64: dts: meson-gxm-khadas-vim2: enable the USB controller The Khadas VIM2 board connects the dwc3 controller to an internal 4-port USB hub which. Two of these ports are accessible directly soldered to the board, while the other two are accessible through the 40-pin "GPIO" header. Signed-off-by: Martin Blumenstingl Signed-off-by: Kevin Hilman --- arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch') diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts b/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts index 4fd46c1546a7..0868da476e41 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts +++ b/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts @@ -406,3 +406,7 @@ status = "okay"; vref-supply = <&vddio_ao18>; }; + +&usb0 { + status = "okay"; +}; -- cgit v1.2.3