Changes in xusb.h

8b798761 - phy: tegra: xusb: Support sleepwalk for Tegra234

Thu, 09 Mar 2023 06:17:08 +0000

phy: tegra: xusb: Support sleepwalk for Tegra234Add new registers programming in sleepwalk sequence for Tegra234:MASTER_ENABLE_A/B/C/D in XUSB_AO_UTMIP_SLEEPWALK.Signed-off-by: Henry Lin Signed-off-by: Haotien Hsu Link: https://lore.kernel.org/r/20230309061708.4156383-1-haotienh@nvidia.comSigned-off-by: Vinod Koul List of files: /linux-6.15/drivers/phy/tegra/xusb.h

d8163a32 - phy: tegra: xusb: Add Tegra234 support

Wed, 11 Jan 2023 11:04:49 +0000

phy: tegra: xusb: Add Tegra234 supportAdd support for the XUSB pad controller found on Tegra234 SoCs. It ismostly similar to the same IP found on Tegra194, because most ofthe Tegra234 XUSB PADCTL registers definition and programming sequenceare the same as Tegra194, Tegra234 XUSB PADCTL can share the samedriver with Tegra186 and Tegra194 XUSB PADCTL.Introduce a new feature, USB2 HW tracking, for Tegra234.The feature is to enable HW periodical PAD tracking which measureand capture the electric parameters of USB2.0 PAD.Signed-off-by: Sing-Han Chen Co-developed-by: Wayne Chang Signed-off-by: Wayne Chang Signed-off-by: Jon Hunter Link: https://lore.kernel.org/r/20230111110450.24617-6-jonathanh@nvidia.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/phy/tegra/xusb.h

5c7f94f8 - phy: tegra: xusb: Add Tegra234 support

Wed, 11 Jan 2023 11:04:49 +0000

phy: tegra: xusb: Add Tegra234 supportAdd support for the XUSB pad controller found on Tegra234 SoCs. It ismostly similar to the same IP found on Tegra194, because most ofthe Tegra234 XUSB PADCTL registers definition and programming sequenceare the same as Tegra194, Tegra234 XUSB PADCTL can share the samedriver with Tegra186 and Tegra194 XUSB PADCTL.Introduce a new feature, USB2 HW tracking, for Tegra234.The feature is to enable HW periodical PAD tracking which measureand capture the electric parameters of USB2.0 PAD.Signed-off-by: Sing-Han Chen Co-developed-by: Wayne Chang Signed-off-by: Wayne Chang Signed-off-by: Jon Hunter Link: https://lore.kernel.org/r/20230111110450.24617-6-jonathanh@nvidia.comSigned-off-by: Vinod Koul List of files: /linux-6.15/drivers/phy/tegra/xusb.h

2428787f - phy: tegra: xusb: Remove usb3 supply

Wed, 05 Oct 2022 08:40:31 +0000

phy: tegra: xusb: Remove usb3 supplyRemove redundant codes for getting the vbus supply of usb3 ports becausewe get and control the vbus supply by the companion usb2 portsSigned-off-by: Wayne Chang Signed-off-by: Haotien Hsu Reviewed-by: Jon Hunter Link: https://lore.kernel.org/r/20221005084031.2154251-1-haotienh@nvidia.comSigned-off-by: Vinod Koul List of files: /linux-6.15/drivers/phy/tegra/xusb.h

77bfa0fc - phy: tegra: xusb: add utmi pad power on/down ops

Tue, 16 Aug 2022 08:23:52 +0000

phy: tegra: xusb: add utmi pad power on/down opsAdd utmi_pad_power_on/down ops for each SOC instead of exportingtegra_phy_xusb_utmi_pad_power_on/down directly for Tegra186 chip.Signed-off-by: BH Hsieh Signed-off-by: Jim Lin Link: https://lore.kernel.org/r/20220816082353.13390-2-jilin@nvidia.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/phy/tegra/xusb.h

c545a905 - phy: tegra: xusb: Add sleepwalk and suspend/resume

Wed, 20 Jan 2021 07:34:06 +0000

phy: tegra: xusb: Add sleepwalk and suspend/resumeThis commit adds sleepwalk/wake and suspend/resume interfacesto Tegra XUSB PHY driver.Tegra XUSB host controller driver makes use of sleepwalk functionsto enable/disable sleepwalk circuit which is in always-on partitionand can respond to USB resume signals when controller is not powered.Sleepwalk can be enabled/disabled for any USB UPHY individually. - tegra_xusb_padctl_enable_phy_sleepwalk() - tegra_xusb_padctl_disable_phy_sleepwalk()Tegra XUSB host controller driver makes use of wake functions toenable/disable/query wake circuit which is in always-on partitioncan wake system up when USB resume happens.Wake circuit can be enabled/disabled for any USB PHY individually. - tegra_xusb_padctl_enable_phy_wake() - tegra_xusb_padctl_disable_phy_wake() - tegra_xusb_padctl_remote_wake_detected()This commit also adds two system suspend stubs that can be used tosave and restore XUSB PADCTL context during system suspend andresume. - tegra_xusb_padctl_suspend_noirq() - tegra_xusb_padctl_resume_noirq()Signed-off-by: JC Kuo Acked-By: Vinod Koul Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/phy/tegra/xusb.h

c339605c - phy: tegra: xusb: Add Tegra210 lane_iddq operation

Wed, 20 Jan 2021 07:34:05 +0000

phy: tegra: xusb: Add Tegra210 lane_iddq operationAs per Tegra210 TRM, before changing lane assignments, driver shouldkeep lanes in IDDQ and sleep state; after changing lane assignments,driver should bring lanes out of IDDQ.This commit implements the required operations.Signed-off-by: JC Kuo Acked-By: Vinod Koul Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/phy/tegra/xusb.h

2352fdb0 - phy: tegra: xusb: Rearrange UPHY init on Tegra210

Wed, 20 Jan 2021 07:34:04 +0000

phy: tegra: xusb: Rearrange UPHY init on Tegra210This commit is a preparation for enabling XUSB SC7 support.It rearranges Tegra210 XUSB PADCTL UPHY initialization sequence,for the following reasons:1. PLLE hardware power sequencer has to be enabled only after both PEX UPHY PLL and SATA UPHY PLL are initialized. tegra210_uphy_init() -> tegra210_pex_uphy_enable() -> tegra210_sata_uphy_enable() -> tegra210_plle_hw_sequence_start() -> tegra210_aux_mux_lp0_clamp_disable()2. At cold boot and SC7 exit, the following bits must be cleared after PEX/SATA lanes are out of IDDQ (IDDQ_DISABLE=1). a. XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_CLAMP_EN, b. XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_CLAMP_EN_EARLY c. XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_VCORE_DOWN tegra210_pex_uphy_enable() and tegra210_sata_uphy_enable() are in charge of bringing lanes out of IDDQ, and then AUX_MUX_LP0_* bits will be cleared by tegra210_aux_mux_lp0_clamp_disable().3. Once UPHY PLL hardware power sequencer is enabled, do not assert reset to PEX/SATA PLLs, otherwise UPHY PLL operation will be broken.Signed-off-by: JC Kuo Acked-By: Vinod Koul Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/phy/tegra/xusb.h

23d5ec3f - phy: tegra: xusb: Move usb3 port init for Tegra210

Wed, 20 Jan 2021 07:34:03 +0000

phy: tegra: xusb: Move usb3 port init for Tegra210The programming sequence in tegra210_usb3_port_enable() is requiredfor both cold boot and SC7 exit, and must be performed only afterPEX/SATA UPHY is initialized. Therefore, this commit moves theprogramming sequence to tegra210_usb3_phy_power_on(). PCIE/SATA phy.power_on() stub will invoke tegra210_usb3_phy_power_on() if the laneis assigned for XUSB super-speed.Signed-off-by: JC Kuo Acked-By: Vinod Koul Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/phy/tegra/xusb.h

e78fdbad - phy: tegra: Don't use device-managed API to allocate ports

Thu, 19 Mar 2020 10:52:13 +0000

phy: tegra: Don't use device-managed API to allocate portsThe device-managed allocation API doesn't work well with the life-cycleof device objects. Since ports have device objects allocated within, itcan lead to situations where these devices need to stay around untilafter their parent pad controller has been unbound from its driver. Thedevice-managed memory allocated for the port objects will, however, getfreed when the pad controller unbinds from the driver. This can causeuse-after-free errors down the road.Note that the device is deleted as part of the driver unbind operation,so there isn't much that can be done with it after that point, but thememory still needs to stay around to ensure none of the references areinvalidated.One situation where this arises is when a VBUS supply is associated witha USB 2 or 3 port. When that supply is released using regulator_put() anSRCU call will queue the release of the device link connecting the portand the regulator after a grace period. This means that the regulator isgoing to keep on to the last reference of the port device even after thepad controller driver was unbound (which is when the memory backing theport device is freed).Fix this by allocating port objects using non-device-managed memory. Addrelease callbacks for these objects so that their memory gets freed whenthe last reference goes away. This decouples the port devices' lifetimefrom the "active" lifetime of the pad controller (i.e. the time duringwhich the pad controller driver owns the device).Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/phy/tegra/xusb.h

2f8da84d - phy: tegra: Fix regulator leak

Wed, 18 Mar 2020 22:25:54 +0000

phy: tegra: Fix regulator leakDevices are created for each port of the XUSB pad controller. Each USB 2and USB 3 port can potentially have an associated VBUS power supply thatneeds to be removed when the device is removed.Since port devices never bind to a driver, the driver core will not getto perform the cleanup of device-managed resources that usually happenson driver unbind.Now, the driver core will also perform device-managed resource cleanupfor driver-less devices when they are released. However, when a devicelink is created between the regulator and the port device, as part ofregulator_get(), the regulator takes a reference to the port device andprevents it from being released unless regulator_put() is called, whichwill never happen.Avoid this by using the non-device-managed API and manually releasingthe regulator reference when the port is unregistered.Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/phy/tegra/xusb.h

1ef535c6 - phy: tegra: xusb: Add Tegra194 support

Wed, 12 Feb 2020 06:11:30 +0000

phy: tegra: xusb: Add Tegra194 supportAdd support for the XUSB pad controller found on Tegra194 SoCs. It ismostly similar to the same IP found on Tegra186, but the number ofpads exposed differs, as do the programming sequences. Because most ofthe Tegra194 XUSB PADCTL registers definition and programming sequenceare the same as Tegra186, Tegra194 XUSB PADCTL can share the samedriver, xusb-tegra186.c, with Tegra186 XUSB PADCTL.Tegra194 XUSB PADCTL supports up to USB 3.1 Gen 2 speed, however, itis possible for some platforms have long signal trace that could notprovide sufficient electrical environment for Gen 2 speed. This patchadds a "maximum-speed" property to usb3 ports which can be used tospecify the maximum supported speed for any particular USB 3.1 port.For a port that is not capable of SuperSpeedPlus, "maximum-speed"property should carry "super-speed".Signed-off-by: JC Kuo Acked-by: Thierry Reding Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/phy/tegra/xusb.h

e8f7d2f4 - phy: tegra: xusb: Add usb-phy support

Mon, 10 Feb 2020 08:11:30 +0000

phy: tegra: xusb: Add usb-phy supportFor USB 2 ports that has usb-role-switch enabled, add usb-phy forcorresponding USB 2 phy. USB role changes from role switch are thenupdated to corresponding host and device mode drivers via usb-phy notifierblock.Signed-off-by: Nagarjuna Kristam Acked-by: Kishon Vijay Abraham I [treding@nvidia.com: rebase onto Greg's usb-next branch]Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/phy/tegra/xusb.h

f67213ce - phy: tegra: xusb: Add usb-role-switch support

Mon, 10 Feb 2020 08:11:29 +0000

phy: tegra: xusb: Add usb-role-switch supportIf usb-role-switch property is present in USB 2 port, registerusb-role-switch to receive usb role changes.Signed-off-by: Nagarjuna Kristam Acked-by: Kishon Vijay Abraham I [treding@nvidia.com: rebase onto Greg's usb-next branch]Signed-off-by: Thierry Reding List of files: /linux-6.15/drivers/phy/tegra/xusb.h

90767cdf - phy: tegra: xusb: Add vbus override support on Tegra210

Fri, 18 Oct 2019 09:38:08 +0000

phy: tegra: xusb: Add vbus override support on Tegra210Tegra XUSB device control driver needs to control vbus overrideduring its operations, add API for the support.Signed-off-by: Nagarjuna Kristam Acked-by: Thierry Reding Signed-off-by: Kishon Vijay Abraham I List of files: /linux-6.15/drivers/phy/tegra/xusb.h

a5be28c3 - phy: tegra: xusb: Add usb3 port fake support on Tegra210

Fri, 18 Oct 2019 09:38:07 +0000

phy: tegra: xusb: Add usb3 port fake support on Tegra210On Tegra210, usb2 only otg/peripheral ports dont work in device mode.They need an assosciated usb3 port to work in device mode. Identifyan unused usb3 port and assign it as a fake USB3 port to USB2 onlyport whose mode is otg/peripheral.Based on work by BH Hsieh .Signed-off-by: Nagarjuna Kristam Acked-by: Thierry Reding Signed-off-by: Kishon Vijay Abraham I List of files: /linux-6.15/drivers/phy/tegra/xusb.h

2025cf9e - treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288

Wed, 29 May 2019 14:18:02 +0000

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more detailsextracted by the scancode license scanner the SPDX license identifier GPL-2.0-onlyhas been chosen to replace the boilerplate/reference in 263 file(s).Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Alexios Zavras Cc: linux-spdx@vger.kernel.orgLink: https://lkml.kernel.org/r/20190529141901.208660670@linutronix.deSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/phy/tegra/xusb.h

bbf71168 - phy: tegra: xusb: Add Tegra186 support

Thu, 21 Feb 2019 15:46:34 +0000

phy: tegra: xusb: Add Tegra186 supportAdd support for the XUSB pad controller found on Tegra186 SoCs. It ismostly similar to the same IP found on earlier chips, but the number ofpads exposed differs, as do the programming sequences.Note that the DVDD_PEX, DVDD_PEX_PLL, HVDD_PEX and HVDD_PEX_PLL powersupplies of the XUSB pad controller require strict power sequencing andare therefore controlled by the PMIC on Tegra186.Signed-off-by: JC Kuo Signed-off-by: Thierry Reding [dan.carpenter@oracle.com: Fix testing the wrong variable in probe()]Signed-off-by: Dan Carpenter [yuehaibing@huawei.com: Make two functions static to fix sparse warning]Signed-off-by: YueHaibing Signed-off-by: Kishon Vijay Abraham I List of files: /linux-6.15/drivers/phy/tegra/xusb.h

a630d54d - phy: tegra: xusb: Add support for power supplies

Thu, 21 Feb 2019 15:46:33 +0000

phy: tegra: xusb: Add support for power suppliesSupport enabling various supplies needed to provide power to the PLLsand logic used to drive the USB, PCI and SATA pads.Reviewed-by: JC Kuo Signed-off-by: Thierry Reding Signed-off-by: Kishon Vijay Abraham I List of files: /linux-6.15/drivers/phy/tegra/xusb.h

5311a7b8 - phy: tegra: xusb: Parse dual-role mode property

Thu, 21 Feb 2019 15:46:32 +0000

phy: tegra: xusb: Parse dual-role mode propertyThe device tree bindings document the "mode" property of "ports"subnodes, but the driver was not parsing the property. In preparationfor adding role switching, parse the property at probe time.Based on work by JC Kuo .Reviewed-by: JC Kuo Signed-off-by: Thierry Reding Signed-off-by: Kishon Vijay Abraham I List of files: /linux-6.15/drivers/phy/tegra/xusb.h