diff options
| author |   Martin Blumenstingl <martin.blumenstingl@googlemail.com> | 2018-02-11 22:15:17 +0100 |
|---|---|---|
| committer |   Felipe Balbi <felipe.balbi@linux.intel.com> | 2018-03-13 10:47:50 +0200 |
| commit | e8284db48f1f5fde93285479d18ae528ec27dce4 (patch) | |
| tree | 51229b26e9de6cda72b02e1a085293547cc893df /drivers/usb/dwc3/dwc3-of-simple.c | |
| parent | usb: dwc3: of-simple: add support for shared and pulsed reset lines (diff) | |
| download | linux-dev-e8284db48f1f5fde93285479d18ae528ec27dce4.tar.xz linux-dev-e8284db48f1f5fde93285479d18ae528ec27dce4.zip | |
usb: dwc3: of-simple: add support for the Amlogic Meson GXL and AXG SoCs
Amlogic Meson GXL and AXG SoCs come with a (host-only) dwc3 USB
controller. To use this controller a clock has to be enabled and a reset
line has to be pulsed.
Enabling the clock works identical to other SoCs. However, the reset
line has to be pulsed (using reset_control_reset) instead of using a
level reset (reset_control_{assert,deassert}).
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Yixun Lan <yixun.lan@amlogic.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/dwc3/dwc3-of-simple.c')
| -rw-r--r-- | drivers/usb/dwc3/dwc3-of-simple.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c index b6d35413c00d..cb2ee96fd3e8 100644 --- a/drivers/usb/dwc3/dwc3-of-simple.c +++ b/drivers/usb/dwc3/dwc3-of-simple.c @@ -93,6 +93,12 @@ static int dwc3_of_simple_probe(struct platform_device *pdev) platform_set_drvdata(pdev, simple); simple->dev = dev; + if (of_device_is_compatible(np, "amlogic,meson-axg-dwc3") || + of_device_is_compatible(np, "amlogic,meson-gxl-dwc3")) { + shared_resets = true; + simple->pulse_resets = true; + } + simple->resets = of_reset_control_array_get(np, shared_resets, true); if (IS_ERR(simple->resets)) { ret = PTR_ERR(simple->resets); @@ -207,6 +213,8 @@ static const struct of_device_id of_dwc3_simple_match[] = { { .compatible = "xlnx,zynqmp-dwc3" }, { .compatible = "cavium,octeon-7130-usb-uctl" }, { .compatible = "sprd,sc9860-dwc3" }, + { .compatible = "amlogic,meson-axg-dwc3" }, + { .compatible = "amlogic,meson-gxl-dwc3" }, { /* Sentinel */ } }; MODULE_DEVICE_TABLE(of, of_dwc3_simple_match); |