7150bc9b4d
In order to the save power consumption, as a workaround, suspend forcibly the USB PORTA/B/C via set the SUSPEND_A/B/C bits of OHCI Interrupt Configuration Register in the SFRs while OHCI USB suspend. This suspend operation must be done before the USB clock is disabled, resume after the USB clock is enabled. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
170 lines
4.4 KiB
Plaintext
170 lines
4.4 KiB
Plaintext
Atmel SOC USB controllers
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OHCI
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Required properties:
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- compatible: Should be one of the following
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"atmel,at91rm9200-ohci" for USB controllers used in host mode.
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"atmel,sama5d2-ohci" for USB controllers used in host mode
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on SAMA5D2 which can force to suspend.
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- reg: Address and length of the register set for the device
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- interrupts: Should contain ehci interrupt
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- clocks: Should reference the peripheral, host and system clocks
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- clock-names: Should contains two strings
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"ohci_clk" for the peripheral clock
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"hclk" for the host clock
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"uhpck" for the system clock
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- num-ports: Number of ports.
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- atmel,vbus-gpio: If present, specifies a gpio that needs to be
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activated for the bus to be powered.
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- atmel,oc-gpio: If present, specifies a gpio that needs to be
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activated for the overcurrent detection.
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usb0: ohci@00500000 {
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compatible = "atmel,at91rm9200-ohci", "usb-ohci";
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reg = <0x00500000 0x100000>;
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clocks = <&uhphs_clk>, <&uhphs_clk>, <&uhpck>;
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clock-names = "ohci_clk", "hclk", "uhpck";
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interrupts = <20 4>;
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num-ports = <2>;
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};
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EHCI
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Required properties:
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- compatible: Should be "atmel,at91sam9g45-ehci" for USB controllers
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used in host mode.
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- reg: Address and length of the register set for the device
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- interrupts: Should contain ehci interrupt
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- clocks: Should reference the peripheral and the UTMI clocks
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- clock-names: Should contains two strings
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"ehci_clk" for the peripheral clock
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"usb_clk" for the UTMI clock
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usb1: ehci@00800000 {
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compatible = "atmel,at91sam9g45-ehci", "usb-ehci";
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reg = <0x00800000 0x100000>;
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interrupts = <22 4>;
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clocks = <&utmi>, <&uhphs_clk>;
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clock-names = "usb_clk", "ehci_clk";
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};
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AT91 USB device controller
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Required properties:
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- compatible: Should be one of the following
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"atmel,at91rm9200-udc"
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"atmel,at91sam9260-udc"
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"atmel,at91sam9261-udc"
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"atmel,at91sam9263-udc"
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- reg: Address and length of the register set for the device
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- interrupts: Should contain macb interrupt
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- clocks: Should reference the peripheral and the AHB clocks
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- clock-names: Should contains two strings
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"pclk" for the peripheral clock
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"hclk" for the AHB clock
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Optional properties:
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- atmel,vbus-gpio: If present, specifies a gpio that needs to be
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activated for the bus to be powered.
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usb1: gadget@fffa4000 {
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compatible = "atmel,at91rm9200-udc";
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reg = <0xfffa4000 0x4000>;
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interrupts = <10 4>;
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clocks = <&udc_clk>, <&udpck>;
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clock-names = "pclk", "hclk";
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atmel,vbus-gpio = <&pioC 5 0>;
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};
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Atmel High-Speed USB device controller
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Required properties:
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- compatible: Should be one of the following
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"atmel,at91sam9rl-udc"
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"atmel,at91sam9g45-udc"
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"atmel,sama5d3-udc"
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- reg: Address and length of the register set for the device
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- interrupts: Should contain usba interrupt
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- clocks: Should reference the peripheral and host clocks
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- clock-names: Should contains two strings
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"pclk" for the peripheral clock
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"hclk" for the host clock
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- ep childnode: To specify the number of endpoints and their properties.
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Optional properties:
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- atmel,vbus-gpio: If present, specifies a gpio that allows to detect whether
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vbus is present (USB is connected).
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Required child node properties:
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- name: Name of the endpoint.
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- reg: Num of the endpoint.
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- atmel,fifo-size: Size of the fifo.
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- atmel,nb-banks: Number of banks.
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- atmel,can-dma: Boolean to specify if the endpoint support DMA.
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- atmel,can-isoc: Boolean to specify if the endpoint support ISOC.
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usb2: gadget@fff78000 {
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#address-cells = <1>;
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#size-cells = <0>;
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compatible = "atmel,at91sam9rl-udc";
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reg = <0x00600000 0x80000
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0xfff78000 0x400>;
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interrupts = <27 4 0>;
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clocks = <&utmi>, <&udphs_clk>;
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clock-names = "hclk", "pclk";
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atmel,vbus-gpio = <&pioB 19 0>;
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ep0 {
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reg = <0>;
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atmel,fifo-size = <64>;
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atmel,nb-banks = <1>;
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};
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ep1 {
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reg = <1>;
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atmel,fifo-size = <1024>;
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atmel,nb-banks = <2>;
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atmel,can-dma;
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atmel,can-isoc;
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};
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ep2 {
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reg = <2>;
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atmel,fifo-size = <1024>;
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atmel,nb-banks = <2>;
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atmel,can-dma;
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atmel,can-isoc;
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};
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ep3 {
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reg = <3>;
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atmel,fifo-size = <1024>;
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atmel,nb-banks = <3>;
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atmel,can-dma;
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};
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ep4 {
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reg = <4>;
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atmel,fifo-size = <1024>;
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atmel,nb-banks = <3>;
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atmel,can-dma;
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};
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ep5 {
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reg = <5>;
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atmel,fifo-size = <1024>;
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atmel,nb-banks = <3>;
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atmel,can-dma;
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atmel,can-isoc;
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};
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ep6 {
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reg = <6>;
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atmel,fifo-size = <1024>;
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atmel,nb-banks = <3>;
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atmel,can-dma;
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atmel,can-isoc;
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};
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};
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