diff options
| author | Daehwan Jung <[email protected]> | 2024-06-10 20:39:13 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2024-06-20 19:30:30 +0200 |
| commit | a353686e7f5f3f3eef3ac4561ae7ade1f8e5dfdd (patch) | |
| tree | 26c2d0e264d8253321edd720c82a0e3ffd8b5246 | |
| parent | bc162403e33e1d57e40994977acaf19f1434e460 (diff) | |
usb: host: xhci-plat: Add support for XHCI_WRITE_64_HI_LO
xHCI specification 5.1 "Register Conventions" states that 64 bit
registers should be written in low-high order. All writing operations
in xhci is done low-high order following the spec.
Add a new quirk to support workaround for high-low order.
Signed-off-by: Daehwan Jung <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
| -rw-r--r-- | drivers/usb/host/xhci-plat.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 3d071b875308..31bdfa52eeb2 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -256,6 +256,9 @@ int xhci_plat_probe(struct platform_device *pdev, struct device *sysdev, const s if (device_property_read_bool(tmpdev, "xhci-sg-trb-cache-size-quirk")) xhci->quirks |= XHCI_SG_TRB_CACHE_SIZE_QUIRK; + if (device_property_read_bool(tmpdev, "write-64-hi-lo-quirk")) + xhci->quirks |= XHCI_WRITE_64_HI_LO; + device_property_read_u32(tmpdev, "imod-interval-ns", &xhci->imod_interval); } |