Difference between revisions of "Zynq development issues"
From ElphelWiki
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* [http://www.wiki.xilinx.com/Zynq+Linux+USB+Device+Driver Zynq Linux USB Device Driver] - typo came from here. | * [http://www.wiki.xilinx.com/Zynq+Linux+USB+Device+Driver Zynq Linux USB Device Driver] - typo came from here. | ||
* [https://forums.xilinx.com/t5/Embedded-Linux/USB-boot-with-Linux-2015-2-build/td-p/643868 A discussion]. | * [https://forums.xilinx.com/t5/Embedded-Linux/USB-boot-with-Linux-2015-2-build/td-p/643868 A discussion]. | ||
− | * [https://forums.xilinx.com/t5/Embedded-Linux/USB-works-in-device-mode-but-not-in-host-mode/td-p/679097 | + | * [https://forums.xilinx.com/t5/Embedded-Linux/USB-works-in-device-mode-but-not-in-host-mode/td-p/679097 Forgot the contents, probably unrelated] |
Revision as of 21:57, 12 April 2016
Contents
ISSUE 1: USB
Description
- Stopped working after switching from 3.10 to 4.0 kernel
Config
- kernel: 4.0 (linux-xlnx 468329e7fac2b22e76897fbd40532cc0884ded2a)
- new device tree record:
... ps7_usb_0: ps7-usb@e0002000 { clocks = <&clkc 28>; compatible = "xlnx,zynq-usb-2.20a", "chipidea,usb2"; reg = <0xe0002000 0x1000>; interrupt-parent = <&ps7_scugic_0>; interrupts = <0 21 4>; dr_mode = "host"; phy_type = "ulpi"; usb-phy = <&usb_phy0>; } ; ... } ; ... usb_phy0: phy0{ compatible = "ulpi-phy"; #phy-cells = <0>; reg = <0xe0002000 0x1000>; viewport = <0x170>; } ;
- .config
CONFIG_USB_ULPI=y CONFIG_USB_ULPI_VIEWPORT=y CONFIG_USB_CHIPIDEA_DEBUG=y CONFIG_USB_GPIO_VBUS=n CONFIG_USB_OTG=n /*do not care if dr_mode = "host";*/ CONFIG_USB_GADGET=n
Log
- dmesg:
[ 1.035759] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 1.042319] usbcore: registered new interface driver usb-storage [ 1.073619] e0002000.ps7-usb supply vbus not found, using dummy regulator [ 1.103560] Registering platform device 'ci_hdrc.0'. Parent at e0002000.ps7-usb [ 1.114806] ci_hdrc ci_hdrc.0: ChipIdea HDRC found, revision: 22, lpm: 0; cap: f00d4100 op: f00d4140 [ 1.136023] ci_hdrc ci_hdrc.0: unable to init phy: -110 [ 1.141232] ci_hdrc: probe of ci_hdrc.0 failed with error -110
a: vbus not found
- the problem is not critical
b: unable to init phy: -110
- Zynq Linux USB Device Driver - typo in docs but it's correct in the released image
- note: order in the device tree does not matter
- corrected the device tree record (s/viewport/view-port/):
usb_phy0: phy0{ compatible = "ulpi-phy"; #phy-cells = <0>; reg = <0xe0002000 0x1000>; view-port = <0x170>; } ;
Links
- Zynq Linux USB Device Driver - typo came from here.
- A discussion.
- Forgot the contents, probably unrelated