AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/usb
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JC Kuo 3a9eb11413 xhci: tegra: Delay for disabling LFPS detector 
commit da7e0c3c2909a3d9bf8acfe1db3cb213bd7febfb upstream.

Occasionally, we are seeing some SuperSpeed devices resumes right after
being directed to U3. This commits add 500us delay to ensure LFPS
detector is disabled before sending ACK to firmware.

[   16.099363] tegra-xusb 70090000.usb: entering ELPG
[   16.104343] tegra-xusb 70090000.usb: 2-1 isn't suspended: 0x0c001203
[   16.114576] tegra-xusb 70090000.usb: not all ports suspended: -16
[   16.120789] tegra-xusb 70090000.usb: entering ELPG failed

The register write passes through a few flop stages of 32KHz clock domain.
NVIDIA ASIC designer reviewed RTL and suggests 500us delay.

Cc: stable@vger.kernel.org
Signed-off-by: JC Kuo <jckuo@nvidia.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20210115161907.2875631-3-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-27 11:55:18 +01:00
..
atm usb: atm: don't use snprintf() for sysfs attrs 2020-08-25 19:11:18 +02:00
c67x00 Linux 5.9-rc3 2020-08-31 07:11:45 +02:00
cdns3 usb: cdns3: imx: fix can't create core device the second time issue 2021-01-27 11:55:17 +01:00
chipidea usb: chipidea: ci_hdrc_imx: add missing put_device() call in usbmisc_get_init_data() 2021-01-12 20:18:19 +01:00
class USB: usblp: fix DMA to stack 2021-01-12 20:18:20 +01:00
common usb: common: usb-conn-gpio: Print error on failure to get VBUS 2020-08-18 12:13:44 +02:00
core USB: add RESET_RESUME quirk for Snapscan 1212 2020-12-21 13:30:07 +01:00
dwc2 usb: dwc2: Avoid leaving the error_debugfs label unused 2020-10-27 11:33:53 +02:00
dwc3 usb: dwc3: ulpi: Fix USB2.0 HS/FS/LS PHY suspend regression 2021-01-12 20:18:19 +01:00
early usb: early: ehci-dbgp: convert to readl_poll_timeout_atomic() 2020-09-25 16:29:09 +02:00
gadget usb: bdc: Make bdc pci driver depend on BROKEN 2021-01-27 11:55:17 +01:00
host xhci: tegra: Delay for disabling LFPS detector 2021-01-27 11:55:18 +01:00
image USB: microtek: use set_host_byte() 2020-09-16 12:42:10 +02:00
isp1760 usb: isp1760-hcd: convert to readl_poll_timeout_atomic() 2020-09-25 16:30:05 +02:00
misc USB: yurex: fix control-URB timeout handling 2021-01-12 20:18:20 +01:00
mon USB: mon: Use scnprintf() for avoiding potential buffer overflow 2020-03-12 09:49:28 +01:00
mtu3 usb: mtu3: fix memory corruption in mtu3_debugfs_regset() 2020-12-26 16:02:38 +01:00
musb Revert "usb: musb: convert to devm_platform_ioremap_resource_byname" 2020-11-13 14:30:23 +01:00
phy usb: phy: phy-ab8500-usb: fix spello of "function" 2020-10-02 09:57:41 +03:00
renesas_usbhs usb: Use fallthrough pseudo-keyword 2020-07-10 08:55:17 +02:00
roles device connection: Remove struct device_connection 2020-09-07 11:14:09 +02:00
serial USB: serial: keyspan_pda: remove unused variable 2021-01-12 20:18:22 +01:00
storage usb: uas: Add PNY USB Portable SSD to unusual_uas 2021-01-12 20:18:19 +01:00
typec usb: typec: Fix copy paste error for NVIDIA alt-mode description 2021-01-19 18:27:27 +01:00
usbip usb: usbip: vhci_hcd: protect shift size 2021-01-12 20:18:19 +01:00
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile
usb-skeleton.c