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phy: tegra: Changes for v4.7-rc1

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This set of patches adds support for the Tegra XUSB pad controller. The
 controller provides a set of pads (lanes) that are used for I/O by other
 IP blocks within Tegra SoCs (PCIe, SATA and XUSB).
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Merge tag 'tegra-for-4.7-phy' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers

Merge "phy: tegra: Changes for v4.7-rc1" from Thierry Reding:

This set of patches adds support for the Tegra XUSB pad controller. The
controller provides a set of pads (lanes) that are used for I/O by other
IP blocks within Tegra SoCs (PCIe, SATA and XUSB).

* tag 'tegra-for-4.7-phy' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  phy: tegra: Add Tegra210 support
  phy: Add Tegra XUSB pad controller support
  dt-bindings: phy: tegra-xusb-padctl: Add Tegra210 support
  dt-bindings: phy: Add NVIDIA Tegra XUSB pad controller binding
  phy: core: Allow children node to be overridden
  clk: tegra: Add interface to enable hardware control of SATA/XUSB PLLs
This commit is contained in:
Arnd Bergmann 2016-05-09 16:18:37 +02:00
commit 4ace926172
18 changed files with 6173 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

733
Documentation/devicetree/bindings/phy/nvidia,tegra124-xusb-padctl.txt Normal file
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@ -0,0 +1,733 @@
Device tree binding for NVIDIA Tegra XUSB pad controller
========================================================
The Tegra XUSB pad controller manages a set of I/O lanes (with differential
signals) which connect directly to pins/pads on the SoC package. Each lane
is controlled by a HW block referred to as a "pad" in the Tegra hardware
documentation. Each such "pad" may control either one or multiple lanes,
and thus contains any logic common to all its lanes. Each lane can be
separately configured and powered up.
Some of the lanes are high-speed lanes, which can be used for PCIe, SATA or
super-speed USB. Other lanes are for various types of low-speed, full-speed
or high-speed USB (such as UTMI, ULPI and HSIC). The XUSB pad controller
contains a software-configurable mux that sits between the I/O controller
ports (e.g. PCIe) and the lanes.
In addition to per-lane configuration, USB 3.0 ports may require additional
settings on a per-board basis.
Pads will be represented as children of the top-level XUSB pad controller
device tree node. Each lane exposed by the pad will be represented by its
own subnode and can be referenced by users of the lane using the standard
PHY bindings, as described by the phy-bindings.txt file in this directory.
The Tegra hardware documentation refers to the connection between the XUSB
pad controller and the XUSB controller as "ports". This is confusing since
"port" is typically used to denote the physical USB receptacle. The device
tree binding in this document uses the term "port" to refer to the logical
abstraction of the signals that are routed to a USB receptacle (i.e. a PHY
for the USB signal, the VBUS power supply, the USB 2.0 companion port for
USB 3.0 receptacles, ...).
Required properties:
--------------------
- compatible: Must be:
- Tegra124: "nvidia,tegra124-xusb-padctl"
- Tegra132: "nvidia,tegra132-xusb-padctl", "nvidia,tegra124-xusb-padctl"
- Tegra210: "nvidia,tegra210-xusb-padctl"
- reg: Physical base address and length of the controller's registers.
- resets: Must contain an entry for each entry in reset-names.
- reset-names: Must include the following entries:
- "padctl"
Pad nodes:
==========
A required child node named "pads" contains a list of subnodes, one for each
of the pads exposed by the XUSB pad controller. Each pad may need additional
resources that can be referenced in its pad node.
The "status" property is used to enable or disable the use of a pad. If set
to "disabled", the pad will not be used on the given board. In order to use
the pad and any of its lanes, this property must be set to "okay".
For Tegra124 and Tegra132, the following pads exist: usb2, ulpi, hsic, pcie
and sata. No extra resources are required for operation of these pads.
For Tegra210, the following pads exist: usb2, hsic, pcie and sata. Below is
a description of the properties of each pad.
UTMI pad:
---------
Required properties:
- clocks: Must contain an entry for each entry in clock-names.
- clock-names: Must contain the following entries:
- "trk": phandle and specifier referring to the USB2 tracking clock
HSIC pad:
---------
Required properties:
- clocks: Must contain an entry for each entry in clock-names.
- clock-names: Must contain the following entries:
- "trk": phandle and specifier referring to the HSIC tracking clock
PCIe pad:
---------
Required properties:
- clocks: Must contain an entry for each entry in clock-names.
- clock-names: Must contain the following entries:
- "pll": phandle and specifier referring to the PLLE
- resets: Must contain an entry for each entry in reset-names.
- reset-names: Must contain the following entries:
- "phy": reset for the PCIe UPHY block
SATA pad:
---------
Required properties:
- resets: Must contain an entry for each entry in reset-names.
- reset-names: Must contain the following entries:
- "phy": reset for the SATA UPHY block
PHY nodes:
==========
Each pad node has a child named "lanes" that contains one or more children of
its own, each representing one of the lanes controlled by the pad.
Required properties:
--------------------
- status: Defines the operation status of the PHY. Valid values are:
- "disabled": the PHY is disabled
- "okay": the PHY is enabled
- #phy-cells: Should be 0. Since each lane represents a single PHY, there is
no need for an additional specifier.
- nvidia,function: The output function of the PHY. See below for a list of
valid functions per SoC generation.
For Tegra124 and Tegra132, the list of valid PHY nodes is given below:
- usb2: usb2-0, usb2-1, usb2-2
- functions: "snps", "xusb", "uart"
- ulpi: ulpi-0
- functions: "snps", "xusb"
- hsic: hsic-0, hsic-1
- functions: "snps", "xusb"
- pcie: pcie-0, pcie-1, pcie-2, pcie-3, pcie-4
- functions: "pcie", "usb3-ss"
- sata: sata-0
- functions: "usb3-ss", "sata"
For Tegra210, the list of valid PHY nodes is given below:
- utmi: utmi-0, utmi-1, utmi-2, utmi-3
- functions: "snps", "xusb", "uart"
- hsic: hsic-0, hsic-1
- functions: "snps", "xusb"
- pcie: pcie-0, pcie-1, pcie-2, pcie-3, pcie-4, pcie-5, pcie-6
- functions: "pcie-x1", "usb3-ss", "pcie-x4"
- sata: sata-0
- functions: "usb3-ss", "sata"
Port nodes:
===========
A required child node named "ports" contains a list of all the ports exposed
by the XUSB pad controller. Per-port configuration is only required for USB.
USB2 ports:
-----------
Required properties:
- status: Defines the operation status of the port. Valid values are:
- "disabled": the port is disabled
- "okay": the port is enabled
- mode: A string that determines the mode in which to run the port. Valid
values are:
- "host": for USB host mode
- "device": for USB device mode
- "otg": for USB OTG mode
Optional properties:
- nvidia,internal: A boolean property whose presence determines that a port
is internal. In the absence of this property the port is considered to be
external.
- vbus-supply: phandle to a regulator supplying the VBUS voltage.
ULPI ports:
-----------
Optional properties:
- status: Defines the operation status of the port. Valid values are:
- "disabled": the port is disabled
- "okay": the port is enabled
- nvidia,internal: A boolean property whose presence determines that a port
is internal. In the absence of this property the port is considered to be
external.
- vbus-supply: phandle to a regulator supplying the VBUS voltage.
HSIC ports:
-----------
Required properties:
- status: Defines the operation status of the port. Valid values are:
- "disabled": the port is disabled
- "okay": the port is enabled
Optional properties:
- vbus-supply: phandle to a regulator supplying the VBUS voltage.
Super-speed USB ports:
----------------------
Required properties:
- status: Defines the operation status of the port. Valid values are:
- "disabled": the port is disabled
- "okay": the port is enabled
- nvidia,usb2-companion: A single cell that specifies the physical port number
to map this super-speed USB port to. The range of valid port numbers varies
with the SoC generation:
- 0-2: for Tegra124 and Tegra132
- 0-3: for Tegra210
Optional properties:
- nvidia,internal: A boolean property whose presence determines that a port
is internal. In the absence of this property the port is considered to be
external.
For Tegra124 and Tegra132, the XUSB pad controller exposes the following
ports:
- 3x USB2: usb2-0, usb2-1, usb2-2
- 1x ULPI: ulpi-0
- 2x HSIC: hsic-0, hsic-1
- 2x super-speed USB: usb3-0, usb3-1
For Tegra210, the XUSB pad controller exposes the following ports:
- 4x USB2: usb2-0, usb2-1, usb2-2, usb2-3
- 2x HSIC: hsic-0, hsic-1
- 4x super-speed USB: usb3-0, usb3-1, usb3-2, usb3-3
Examples:
=========
Tegra124 and Tegra132:
----------------------
SoC include:
padctl@7009f000 {
/* for Tegra124 */
compatible = "nvidia,tegra124-xusb-padctl";
/* for Tegra132 */
compatible = "nvidia,tegra132-xusb-padctl",
"nvidia,tegra124-xusb-padctl";
reg = <0x0 0x7009f000 0x0 0x1000>;
resets = <&tegra_car 142>;
reset-names = "padctl";
pads {
usb2 {
status = "disabled";
lanes {
usb2-0 {
status = "disabled";
#phy-cells = <0>;
};
usb2-1 {
status = "disabled";
#phy-cells = <0>;
};
usb2-2 {
status = "disabled";
#phy-cells = <0>;
};
};
};
ulpi {
status = "disabled";
lanes {
ulpi-0 {
status = "disabled";
#phy-cells = <0>;
};
};
};
hsic {
status = "disabled";
lanes {
hsic-0 {
status = "disabled";
#phy-cells = <0>;
};
hsic-1 {
status = "disabled";
#phy-cells = <0>;
};
};
};
pcie {
status = "disabled";
lanes {
pcie-0 {
status = "disabled";
#phy-cells = <0>;
};
pcie-1 {
status = "disabled";
#phy-cells = <0>;
};
pcie-2 {
status = "disabled";
#phy-cells = <0>;
};
pcie-3 {
status = "disabled";
#phy-cells = <0>;
};
pcie-4 {
status = "disabled";
#phy-cells = <0>;
};
};
};
sata {
status = "disabled";
lanes {
sata-0 {
status = "disabled";
#phy-cells = <0>;
};
};
};
};
ports {
usb2-0 {
status = "disabled";
};
usb2-1 {
status = "disabled";
};
usb2-2 {
status = "disabled";
};
ulpi-0 {
status = "disabled";
};
hsic-0 {
status = "disabled";
};
hsic-1 {
status = "disabled";
};
usb3-0 {
status = "disabled";
};
usb3-1 {
status = "disabled";
};
};
};
Board file:
padctl@7009f000 {
status = "okay";
pads {
usb2 {
status = "okay";
lanes {
usb2-0 {
nvidia,function = "xusb";
status = "okay";
};
usb2-1 {
nvidia,function = "xusb";
status = "okay";
};
usb2-2 {
nvidia,function = "xusb";
status = "okay";
};
};
};
pcie {
status = "okay";
lanes {
pcie-0 {
nvidia,function = "usb3-ss";
status = "okay";
};
pcie-2 {
nvidia,function = "pcie";
status = "okay";
};
pcie-4 {
nvidia,function = "pcie";
status = "okay";
};
};
};
sata {
status = "okay";
lanes {
sata-0 {
nvidia,function = "sata";
status = "okay";
};
};
};
};
ports {
/* Micro A/B */
usb2-0 {
status = "okay";
mode = "otg";
};
/* Mini PCIe */
usb2-1 {
status = "okay";
mode = "host";
};
/* USB3 */
usb2-2 {
status = "okay";
mode = "host";
vbus-supply = <&vdd_usb3_vbus>;
};
usb3-0 {
nvidia,port = <2>;
status = "okay";
};
};
};
Tegra210:
---------
SoC include:
padctl@7009f000 {
compatible = "nvidia,tegra210-xusb-padctl";
reg = <0x0 0x7009f000 0x0 0x1000>;
resets = <&tegra_car 142>;
reset-names = "padctl";
status = "disabled";
pads {
usb2 {
clocks = <&tegra_car TEGRA210_CLK_USB2_TRK>;
clock-names = "trk";
status = "disabled";
lanes {
usb2-0 {
status = "disabled";
#phy-cells = <0>;
};
usb2-1 {
status = "disabled";
#phy-cells = <0>;
};
usb2-2 {
status = "disabled";
#phy-cells = <0>;
};
usb2-3 {
status = "disabled";
#phy-cells = <0>;
};
};
};
hsic {
clocks = <&tegra_car TEGRA210_CLK_HSIC_TRK>;
clock-names = "trk";
status = "disabled";
lanes {
hsic-0 {
status = "disabled";
#phy-cells = <0>;
};
hsic-1 {
status = "disabled";
#phy-cells = <0>;
};
};
};
pcie {
clocks = <&tegra_car TEGRA210_CLK_PLL_E>;
clock-names = "pll";
resets = <&tegra_car 205>;
reset-names = "phy";
status = "disabled";
lanes {
pcie-0 {
status = "disabled";
#phy-cells = <0>;
};
pcie-1 {
status = "disabled";
#phy-cells = <0>;
};
pcie-2 {
status = "disabled";
#phy-cells = <0>;
};
pcie-3 {
status = "disabled";
#phy-cells = <0>;
};
pcie-4 {
status = "disabled";
#phy-cells = <0>;
};
pcie-5 {
status = "disabled";
#phy-cells = <0>;
};
pcie-6 {
status = "disabled";
#phy-cells = <0>;
};
};
};
sata {
clocks = <&tegra_car TEGRA210_CLK_PLL_E>;
clock-names = "pll";
resets = <&tegra_car 204>;
reset-names = "phy";
status = "disabled";
lanes {
sata-0 {
status = "disabled";
#phy-cells = <0>;
};
};
};
};
ports {
usb2-0 {
status = "disabled";
};
usb2-1 {
status = "disabled";
};
usb2-2 {
status = "disabled";
};
usb2-3 {
status = "disabled";
};
hsic-0 {
status = "disabled";
};
hsic-1 {
status = "disabled";
};
usb3-0 {
status = "disabled";
};
usb3-1 {
status = "disabled";
};
usb3-2 {
status = "disabled";
};
usb3-3 {
status = "disabled";
};
};
};
Board file:
padctl@7009f000 {
status = "okay";
pads {
usb2 {
status = "okay";
lanes {
usb2-0 {
nvidia,function = "xusb";
status = "okay";
};
usb2-1 {
nvidia,function = "xusb";
status = "okay";
};
usb2-2 {
nvidia,function = "xusb";
status = "okay";
};
usb2-3 {
nvidia,function = "xusb";
status = "okay";
};
};
};
pcie {
status = "okay";
lanes {
pcie-0 {
nvidia,function = "pcie-x1";
status = "okay";
};
pcie-1 {
nvidia,function = "pcie-x4";
status = "okay";
};
pcie-2 {
nvidia,function = "pcie-x4";
status = "okay";
};
pcie-3 {
nvidia,function = "pcie-x4";
status = "okay";
};
pcie-4 {
nvidia,function = "pcie-x4";
status = "okay";
};
pcie-5 {
nvidia,function = "usb3-ss";
status = "okay";
};
pcie-6 {
nvidia,function = "usb3-ss";
status = "okay";
};
};
};
sata {
status = "okay";
lanes {
sata-0 {
nvidia,function = "sata";
status = "okay";
};
};
};
};
ports {
usb2-0 {
status = "okay";
mode = "otg";
};
usb2-1 {
status = "okay";
vbus-supply = <&vdd_5v0_rtl>;
mode = "host";
};
usb2-2 {
status = "okay";
vbus-supply = <&vdd_usb_vbus>;
mode = "host";
};
usb2-3 {
status = "okay";
mode = "host";
};
usb3-0 {
status = "okay";
nvidia,lanes = "pcie-6";
nvidia,port = <1>;
};
usb3-1 {
status = "okay";
nvidia,lanes = "pcie-5";
nvidia,port = <2>;
};
};
};

6
Documentation/devicetree/bindings/pinctrl/nvidia,tegra124-xusb-padctl.txt
View File

@ -1,6 +1,12 @@
Device tree binding for NVIDIA Tegra XUSB pad controller
========================================================
NOTE: It turns out that this binding isn't an accurate description of the XUSB
pad controller. While the description is good enough for the functional subset
required for PCIe and SATA, it lacks the flexibility to represent the features
needed for USB. For the new binding, see ../phy/nvidia,tegra-xusb-padctl.txt.
The binding described in this file is deprecated and should not be used.
The Tegra XUSB pad controller manages a set of lanes, each of which can be
assigned to one out of a set of different pads. Some of these pads have an
associated PHY that must be powered up before the pad can be used.

16
Documentation/phy.txt
View File

@ -31,16 +31,28 @@ should provide its own implementation of of_xlate. of_xlate is used only for
dt boot case.
#define of_phy_provider_register(dev, xlate) \
__of_phy_provider_register((dev), THIS_MODULE, (xlate))
__of_phy_provider_register((dev), NULL, THIS_MODULE, (xlate))
#define devm_of_phy_provider_register(dev, xlate) \
__devm_of_phy_provider_register((dev), THIS_MODULE, (xlate))
__devm_of_phy_provider_register((dev), NULL, THIS_MODULE, (xlate))
of_phy_provider_register and devm_of_phy_provider_register macros can be used to
register the phy_provider and it takes device and of_xlate as
arguments. For the dt boot case, all PHY providers should use one of the above
2 macros to register the PHY provider.
Often the device tree nodes associated with a PHY provider will contain a set
of children that each represent a single PHY. Some bindings may nest the child
nodes within extra levels for context and extensibility, in which case the low
level of_phy_provider_register_full() and devm_of_phy_provider_register_full()
macros can be used to override the node containing the children.
#define of_phy_provider_register_full(dev, children, xlate) \
__of_phy_provider_register(dev, children, THIS_MODULE, xlate)
#define devm_of_phy_provider_register_full(dev, children, xlate) \
__devm_of_phy_provider_register_full(dev, children, THIS_MODULE, xlate)
void devm_of_phy_provider_unregister(struct device *dev,
struct phy_provider *phy_provider);
void of_phy_provider_unregister(struct phy_provider *phy_provider);

58
drivers/clk/tegra/clk-tegra210.c
View File

@ -175,6 +175,19 @@
#define UTMIP_PLL_CFG1_FORCE_PLL_ENABLE_POWERDOWN BIT(14)
#define UTMIP_PLL_CFG1_FORCE_PLL_ACTIVE_POWERDOWN BIT(12)
#define SATA_PLL_CFG0 0x490
#define SATA_PLL_CFG0_PADPLL_RESET_SWCTL BIT(0)
#define SATA_PLL_CFG0_PADPLL_USE_LOCKDET BIT(2)
#define SATA_PLL_CFG0_PADPLL_SLEEP_IDDQ BIT(13)
#define SATA_PLL_CFG0_SEQ_ENABLE BIT(24)
#define XUSBIO_PLL_CFG0 0x51c
#define XUSBIO_PLL_CFG0_PADPLL_RESET_SWCTL BIT(0)
#define XUSBIO_PLL_CFG0_CLK_ENABLE_SWCTL BIT(2)
#define XUSBIO_PLL_CFG0_PADPLL_USE_LOCKDET BIT(6)
#define XUSBIO_PLL_CFG0_PADPLL_SLEEP_IDDQ BIT(13)
#define XUSBIO_PLL_CFG0_SEQ_ENABLE BIT(24)
#define UTMIPLL_HW_PWRDN_CFG0 0x52c
#define UTMIPLL_HW_PWRDN_CFG0_UTMIPLL_LOCK BIT(31)
#define UTMIPLL_HW_PWRDN_CFG0_SEQ_START_STATE BIT(25)
@ -416,6 +429,51 @@ static const char *mux_pllmcp_clkm[] = {
#define PLLU_MISC0_WRITE_MASK 0xbfffffff
#define PLLU_MISC1_WRITE_MASK 0x00000007
void tegra210_xusb_pll_hw_control_enable(void)
{
u32 val;
val = readl_relaxed(clk_base + XUSBIO_PLL_CFG0);
val &= ~(XUSBIO_PLL_CFG0_CLK_ENABLE_SWCTL |
XUSBIO_PLL_CFG0_PADPLL_RESET_SWCTL);
val |= XUSBIO_PLL_CFG0_PADPLL_USE_LOCKDET |
XUSBIO_PLL_CFG0_PADPLL_SLEEP_IDDQ;
writel_relaxed(val, clk_base + XUSBIO_PLL_CFG0);
}
EXPORT_SYMBOL_GPL(tegra210_xusb_pll_hw_control_enable);
void tegra210_xusb_pll_hw_sequence_start(void)
{
u32 val;
val = readl_relaxed(clk_base + XUSBIO_PLL_CFG0);
val |= XUSBIO_PLL_CFG0_SEQ_ENABLE;
writel_relaxed(val, clk_base + XUSBIO_PLL_CFG0);
}
EXPORT_SYMBOL_GPL(tegra210_xusb_pll_hw_sequence_start);
void tegra210_sata_pll_hw_control_enable(void)
{
u32 val;
val = readl_relaxed(clk_base + SATA_PLL_CFG0);
val &= ~SATA_PLL_CFG0_PADPLL_RESET_SWCTL;
val |= SATA_PLL_CFG0_PADPLL_USE_LOCKDET |
SATA_PLL_CFG0_PADPLL_SLEEP_IDDQ;
writel_relaxed(val, clk_base + SATA_PLL_CFG0);
}
EXPORT_SYMBOL_GPL(tegra210_sata_pll_hw_control_enable);
void tegra210_sata_pll_hw_sequence_start(void)
{
u32 val;
val = readl_relaxed(clk_base + SATA_PLL_CFG0);
val |= SATA_PLL_CFG0_SEQ_ENABLE;
writel_relaxed(val, clk_base + SATA_PLL_CFG0);
}
EXPORT_SYMBOL_GPL(tegra210_sata_pll_hw_sequence_start);
static inline void _pll_misc_chk_default(void __iomem *base,
struct tegra_clk_pll_params *params,
u8 misc_num, u32 default_val, u32 mask)

2
drivers/phy/Kconfig
View File

@ -421,4 +421,6 @@ config PHY_CYGNUS_PCIE
Enable this to support the Broadcom Cygnus PCIe PHY.
If unsure, say N.
source "drivers/phy/tegra/Kconfig"
endmenu

2
drivers/phy/Makefile
View File

@ -52,3 +52,5 @@ obj-$(CONFIG_PHY_TUSB1210) += phy-tusb1210.o
obj-$(CONFIG_PHY_BRCMSTB_SATA) += phy-brcmstb-sata.o
obj-$(CONFIG_PHY_PISTACHIO_USB) += phy-pistachio-usb.o
obj-$(CONFIG_PHY_CYGNUS_PCIE) += phy-bcm-cygnus-pcie.o
obj-$(CONFIG_ARCH_TEGRA) += tegra/

50
drivers/phy/phy-core.c
View File

@ -141,7 +141,7 @@ static struct phy_provider *of_phy_provider_lookup(struct device_node *node)
if (phy_provider->dev->of_node == node)
return phy_provider;
for_each_child_of_node(phy_provider->dev->of_node, child)
for_each_child_of_node(phy_provider->children, child)
if (child == node)
return phy_provider;
}
@ -811,24 +811,59 @@ EXPORT_SYMBOL_GPL(devm_phy_destroy);
/**
* __of_phy_provider_register() - create/register phy provider with the framework
* @dev: struct device of the phy provider
* @children: device node containing children (if different from dev->of_node)
* @owner: the module owner containing of_xlate
* @of_xlate: function pointer to obtain phy instance from phy provider
*
* Creates struct phy_provider from dev and of_xlate function pointer.
* This is used in the case of dt boot for finding the phy instance from
* phy provider.
*
* If the PHY provider doesn't nest children directly but uses a separate
* child node to contain the individual children, the @children parameter
* can be used to override the default. If NULL, the default (dev->of_node)
* will be used. If non-NULL, the device node must be a child (or further
* descendant) of dev->of_node. Otherwise an ERR_PTR()-encoded -EINVAL
* error code is returned.
*/
struct phy_provider *__of_phy_provider_register(struct device *dev,
struct module *owner, struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args))
struct device_node *children, struct module *owner,
struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args))
{
struct phy_provider *phy_provider;
/*
* If specified, the device node containing the children must itself
* be the provider's device node or a child (or further descendant)
* thereof.
*/
if (children) {
struct device_node *parent = of_node_get(children), *next;
while (parent) {
if (parent == dev->of_node)
break;
next = of_get_parent(parent);
of_node_put(parent);
parent = next;
}
if (!parent)
return ERR_PTR(-EINVAL);
of_node_put(parent);
} else {
children = dev->of_node;
}
phy_provider = kzalloc(sizeof(*phy_provider), GFP_KERNEL);
if (!phy_provider)
return ERR_PTR(-ENOMEM);
phy_provider->dev = dev;
phy_provider->children = of_node_get(children);
phy_provider->owner = owner;
phy_provider->of_xlate = of_xlate;
@ -854,8 +889,9 @@ EXPORT_SYMBOL_GPL(__of_phy_provider_register);
* on the devres data, then, devres data is freed.
*/
struct phy_provider *__devm_of_phy_provider_register(struct device *dev,
struct module *owner, struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args))
struct device_node *children, struct module *owner,
struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args))
{
struct phy_provider **ptr, *phy_provider;
@ -863,7 +899,8 @@ struct phy_provider *__devm_of_phy_provider_register(struct device *dev,
if (!ptr)
return ERR_PTR(-ENOMEM);
phy_provider = __of_phy_provider_register(dev, owner, of_xlate);
phy_provider = __of_phy_provider_register(dev, children, owner,
of_xlate);
if (!IS_ERR(phy_provider)) {
*ptr = phy_provider;
devres_add(dev, ptr);
@ -888,6 +925,7 @@ void of_phy_provider_unregister(struct phy_provider *phy_provider)
mutex_lock(&phy_provider_mutex);
list_del(&phy_provider->list);
of_node_put(phy_provider->children);
kfree(phy_provider);
mutex_unlock(&phy_provider_mutex);
}

8
drivers/phy/tegra/Kconfig Normal file
View File

@ -0,0 +1,8 @@
config PHY_TEGRA_XUSB
tristate "NVIDIA Tegra XUSB pad controller driver"
depends on ARCH_TEGRA
help
Choose this option if you have an NVIDIA Tegra SoC.
To compile this driver as a module, choose M here: the module will
be called phy-tegra-xusb.

6
drivers/phy/tegra/Makefile Normal file
View File

@ -0,0 +1,6 @@
obj-$(CONFIG_PHY_TEGRA_XUSB) += phy-tegra-xusb.o
phy-tegra-xusb-y += xusb.o
phy-tegra-xusb-$(CONFIG_ARCH_TEGRA_124_SOC) += xusb-tegra124.o
phy-tegra-xusb-$(CONFIG_ARCH_TEGRA_132_SOC) += xusb-tegra124.o
phy-tegra-xusb-$(CONFIG_ARCH_TEGRA_210_SOC) += xusb-tegra210.o

1752
drivers/phy/tegra/xusb-tegra124.c Normal file
View File

File diff suppressed because it is too large Load Diff

2045
drivers/phy/tegra/xusb-tegra210.c Normal file
View File

File diff suppressed because it is too large Load Diff

1021
drivers/phy/tegra/xusb.c Normal file
View File

File diff suppressed because it is too large Load Diff

421
drivers/phy/tegra/xusb.h Normal file
View File

@ -0,0 +1,421 @@
/*
* Copyright (c) 2014-2015, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2015, Google Inc.
*
* 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 details.
*/
#ifndef __PHY_TEGRA_XUSB_H
#define __PHY_TEGRA_XUSB_H
#include <linux/io.h>
#include <linux/mutex.h>
#include <linux/workqueue.h>
/* legacy entry points for backwards-compatibility */
int tegra_xusb_padctl_legacy_probe(struct platform_device *pdev);
int tegra_xusb_padctl_legacy_remove(struct platform_device *pdev);
struct phy;
struct phy_provider;
struct platform_device;
struct regulator;
/*
* lanes
*/
struct tegra_xusb_lane_soc {
const char *name;
unsigned int offset;
unsigned int shift;
unsigned int mask;
const char * const *funcs;
unsigned int num_funcs;
};
struct tegra_xusb_lane {
const struct tegra_xusb_lane_soc *soc;
struct tegra_xusb_pad *pad;
struct device_node *np;
struct list_head list;
unsigned int function;
unsigned int index;
};
int tegra_xusb_lane_parse_dt(struct tegra_xusb_lane *lane,
struct device_node *np);
struct tegra_xusb_usb2_lane {
struct tegra_xusb_lane base;
u32 hs_curr_level_offset;
};
static inline struct tegra_xusb_usb2_lane *
to_usb2_lane(struct tegra_xusb_lane *lane)
{
return container_of(lane, struct tegra_xusb_usb2_lane, base);
}
struct tegra_xusb_ulpi_lane {
struct tegra_xusb_lane base;
};
static inline struct tegra_xusb_ulpi_lane *
to_ulpi_lane(struct tegra_xusb_lane *lane)
{
return container_of(lane, struct tegra_xusb_ulpi_lane, base);
}
struct tegra_xusb_hsic_lane {
struct tegra_xusb_lane base;
u32 strobe_trim;
u32 rx_strobe_trim;
u32 rx_data_trim;
u32 tx_rtune_n;
u32 tx_rtune_p;
u32 tx_rslew_n;
u32 tx_rslew_p;
bool auto_term;
};
static inline struct tegra_xusb_hsic_lane *
to_hsic_lane(struct tegra_xusb_lane *lane)
{
return container_of(lane, struct tegra_xusb_hsic_lane, base);
}
struct tegra_xusb_pcie_lane {
struct tegra_xusb_lane base;
};
static inline struct tegra_xusb_pcie_lane *
to_pcie_lane(struct tegra_xusb_lane *lane)
{
return container_of(lane, struct tegra_xusb_pcie_lane, base);
}
struct tegra_xusb_sata_lane {
struct tegra_xusb_lane base;
};
static inline struct tegra_xusb_sata_lane *
to_sata_lane(struct tegra_xusb_lane *lane)
{
return container_of(lane, struct tegra_xusb_sata_lane, base);
}
struct tegra_xusb_lane_ops {
struct tegra_xusb_lane *(*probe)(struct tegra_xusb_pad *pad,
struct device_node *np,
unsigned int index);
void (*remove)(struct tegra_xusb_lane *lane);
};
/*
* pads
*/
struct tegra_xusb_pad_soc;
struct tegra_xusb_padctl;
struct tegra_xusb_pad_ops {
struct tegra_xusb_pad *(*probe)(struct tegra_xusb_padctl *padctl,
const struct tegra_xusb_pad_soc *soc,
struct device_node *np);
void (*remove)(struct tegra_xusb_pad *pad);
};
struct tegra_xusb_pad_soc {
const char *name;
const struct tegra_xusb_lane_soc *lanes;
unsigned int num_lanes;
const struct tegra_xusb_pad_ops *ops;
};
struct tegra_xusb_pad {
const struct tegra_xusb_pad_soc *soc;
struct tegra_xusb_padctl *padctl;
struct phy_provider *provider;
struct phy **lanes;
struct device dev;
const struct tegra_xusb_lane_ops *ops;
struct list_head list;
};
static inline struct tegra_xusb_pad *to_tegra_xusb_pad(struct device *dev)
{
return container_of(dev, struct tegra_xusb_pad, dev);
}
int tegra_xusb_pad_init(struct tegra_xusb_pad *pad,
struct tegra_xusb_padctl *padctl,
struct device_node *np);
int tegra_xusb_pad_register(struct tegra_xusb_pad *pad,
const struct phy_ops *ops);
void tegra_xusb_pad_unregister(struct tegra_xusb_pad *pad);
struct tegra_xusb_usb2_pad {
struct tegra_xusb_pad base;
struct clk *clk;
unsigned int enable;
struct mutex lock;
};
static inline struct tegra_xusb_usb2_pad *
to_usb2_pad(struct tegra_xusb_pad *pad)
{
return container_of(pad, struct tegra_xusb_usb2_pad, base);
}
struct tegra_xusb_ulpi_pad {
struct tegra_xusb_pad base;
};
static inline struct tegra_xusb_ulpi_pad *
to_ulpi_pad(struct tegra_xusb_pad *pad)
{
return container_of(pad, struct tegra_xusb_ulpi_pad, base);
}
struct tegra_xusb_hsic_pad {
struct tegra_xusb_pad base;
struct regulator *supply;
struct clk *clk;
};
static inline struct tegra_xusb_hsic_pad *
to_hsic_pad(struct tegra_xusb_pad *pad)
{
return container_of(pad, struct tegra_xusb_hsic_pad, base);
}
struct tegra_xusb_pcie_pad {
struct tegra_xusb_pad base;
struct reset_control *rst;
struct clk *pll;
unsigned int enable;
};
static inline struct tegra_xusb_pcie_pad *
to_pcie_pad(struct tegra_xusb_pad *pad)
{
return container_of(pad, struct tegra_xusb_pcie_pad, base);
}
struct tegra_xusb_sata_pad {
struct tegra_xusb_pad base;
struct reset_control *rst;
struct clk *pll;
unsigned int enable;
};
static inline struct tegra_xusb_sata_pad *
to_sata_pad(struct tegra_xusb_pad *pad)
{
return container_of(pad, struct tegra_xusb_sata_pad, base);
}
/*
* ports
*/
struct tegra_xusb_port_ops;
struct tegra_xusb_port {
struct tegra_xusb_padctl *padctl;
struct tegra_xusb_lane *lane;
unsigned int index;
struct list_head list;
struct device dev;
const struct tegra_xusb_port_ops *ops;
};
struct tegra_xusb_lane_map {
unsigned int port;
const char *type;
unsigned int index;
const char *func;
};
struct tegra_xusb_lane *
tegra_xusb_port_find_lane(struct tegra_xusb_port *port,
const struct tegra_xusb_lane_map *map,
const char *function);
struct tegra_xusb_port *
tegra_xusb_find_port(struct tegra_xusb_padctl *padctl, const char *type,
unsigned int index);
struct tegra_xusb_usb2_port {
struct tegra_xusb_port base;
struct regulator *supply;
bool internal;
};
static inline struct tegra_xusb_usb2_port *
to_usb2_port(struct tegra_xusb_port *port)
{
return container_of(port, struct tegra_xusb_usb2_port, base);
}
struct tegra_xusb_usb2_port *
tegra_xusb_find_usb2_port(struct tegra_xusb_padctl *padctl,
unsigned int index);
struct tegra_xusb_ulpi_port {
struct tegra_xusb_port base;
struct regulator *supply;
bool internal;
};
static inline struct tegra_xusb_ulpi_port *
to_ulpi_port(struct tegra_xusb_port *port)
{
return container_of(port, struct tegra_xusb_ulpi_port, base);
}
struct tegra_xusb_hsic_port {
struct tegra_xusb_port base;
};
static inline struct tegra_xusb_hsic_port *
to_hsic_port(struct tegra_xusb_port *port)
{
return container_of(port, struct tegra_xusb_hsic_port, base);
}
struct tegra_xusb_usb3_port {
struct tegra_xusb_port base;
struct regulator *supply;
bool context_saved;
unsigned int port;
bool internal;
u32 tap1;
u32 amp;
u32 ctle_z;
u32 ctle_g;
};
static inline struct tegra_xusb_usb3_port *
to_usb3_port(struct tegra_xusb_port *port)
{
return container_of(port, struct tegra_xusb_usb3_port, base);
}
struct tegra_xusb_usb3_port *
tegra_xusb_find_usb3_port(struct tegra_xusb_padctl *padctl,
unsigned int index);
struct tegra_xusb_port_ops {
int (*enable)(struct tegra_xusb_port *port);
void (*disable)(struct tegra_xusb_port *port);
struct tegra_xusb_lane *(*map)(struct tegra_xusb_port *port);
};
/*
* pad controller
*/
struct tegra_xusb_padctl_soc;
struct tegra_xusb_padctl_ops {
struct tegra_xusb_padctl *
(*probe)(struct device *dev,
const struct tegra_xusb_padctl_soc *soc);
void (*remove)(struct tegra_xusb_padctl *padctl);
int (*usb3_save_context)(struct tegra_xusb_padctl *padctl,
unsigned int index);
int (*hsic_set_idle)(struct tegra_xusb_padctl *padctl,
unsigned int index, bool idle);
int (*usb3_set_lfps_detect)(struct tegra_xusb_padctl *padctl,
unsigned int index, bool enable);
};
struct tegra_xusb_padctl_soc {
const struct tegra_xusb_pad_soc * const *pads;
unsigned int num_pads;
struct {
struct {
const struct tegra_xusb_port_ops *ops;
unsigned int count;
} usb2, ulpi, hsic, usb3;
} ports;
const struct tegra_xusb_padctl_ops *ops;
};
struct tegra_xusb_padctl {
struct device *dev;
void __iomem *regs;
struct mutex lock;
struct reset_control *rst;
const struct tegra_xusb_padctl_soc *soc;
struct tegra_xusb_pad *pcie;
struct tegra_xusb_pad *sata;
struct tegra_xusb_pad *ulpi;
struct tegra_xusb_pad *usb2;
struct tegra_xusb_pad *hsic;
struct list_head ports;
struct list_head lanes;
struct list_head pads;
unsigned int enable;
struct clk *clk;
};
static inline void padctl_writel(struct tegra_xusb_padctl *padctl, u32 value,
unsigned long offset)
{
dev_dbg(padctl->dev, "%08lx < %08x\n", offset, value);
writel(value, padctl->regs + offset);
}
static inline u32 padctl_readl(struct tegra_xusb_padctl *padctl,
unsigned long offset)
{
u32 value = readl(padctl->regs + offset);
dev_dbg(padctl->dev, "%08lx > %08x\n", offset, value);
return value;
}
struct tegra_xusb_lane *tegra_xusb_find_lane(struct tegra_xusb_padctl *padctl,
const char *name,
unsigned int index);
#if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
extern const struct tegra_xusb_padctl_soc tegra124_xusb_padctl_soc;
#endif
#if defined(CONFIG_ARCH_TEGRA_210_SOC)
extern const struct tegra_xusb_padctl_soc tegra210_xusb_padctl_soc;
#endif
#endif /* __PHY_TEGRA_XUSB_H */

20
drivers/pinctrl/tegra/pinctrl-tegra-xusb.c
View File

@ -873,7 +873,7 @@ static const struct of_device_id tegra_xusb_padctl_of_match[] = {
};
MODULE_DEVICE_TABLE(of, tegra_xusb_padctl_of_match);
static int tegra_xusb_padctl_probe(struct platform_device *pdev)
int tegra_xusb_padctl_legacy_probe(struct platform_device *pdev)
{
struct tegra_xusb_padctl *padctl;
const struct of_device_id *match;
@ -955,8 +955,9 @@ reset:
reset_control_assert(padctl->rst);
return err;
}
EXPORT_SYMBOL_GPL(tegra_xusb_padctl_legacy_probe);
static int tegra_xusb_padctl_remove(struct platform_device *pdev)
int tegra_xusb_padctl_legacy_remove(struct platform_device *pdev)
{
struct tegra_xusb_padctl *padctl = platform_get_drvdata(pdev);
int err;
@ -969,17 +970,4 @@ static int tegra_xusb_padctl_remove(struct platform_device *pdev)
return err;
}
static struct platform_driver tegra_xusb_padctl_driver = {
.driver = {
.name = "tegra-xusb-padctl",
.of_match_table = tegra_xusb_padctl_of_match,
},
.probe = tegra_xusb_padctl_probe,
.remove = tegra_xusb_padctl_remove,
};
module_platform_driver(tegra_xusb_padctl_driver);
MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
MODULE_DESCRIPTION("Tegra 124 XUSB Pad Control driver");
MODULE_LICENSE("GPL v2");
EXPORT_SYMBOL_GPL(tegra_xusb_padctl_legacy_remove);

5
include/linux/clk/tegra.h
View File

@ -121,4 +121,9 @@ static inline void tegra_cpu_clock_resume(void)
}
#endif
extern void tegra210_xusb_pll_hw_control_enable(void);
extern void tegra210_xusb_pll_hw_sequence_start(void);
extern void tegra210_sata_pll_hw_control_enable(void);
extern void tegra210_sata_pll_hw_sequence_start(void);
#endif /* __LINUX_CLK_TEGRA_H_ */

31
include/linux/phy/phy.h
View File

@ -77,6 +77,7 @@ struct phy {
*/
struct phy_provider {
struct device *dev;
struct device_node *children;
struct module *owner;
struct list_head list;
struct phy * (*of_xlate)(struct device *dev,
@ -93,10 +94,16 @@ struct phy_lookup {
#define to_phy(a) (container_of((a), struct phy, dev))
#define of_phy_provider_register(dev, xlate) \
__of_phy_provider_register((dev), THIS_MODULE, (xlate))
__of_phy_provider_register((dev), NULL, THIS_MODULE, (xlate))
#define devm_of_phy_provider_register(dev, xlate) \
__devm_of_phy_provider_register((dev), THIS_MODULE, (xlate))
__devm_of_phy_provider_register((dev), NULL, THIS_MODULE, (xlate))
#define of_phy_provider_register_full(dev, children, xlate) \
__of_phy_provider_register(dev, children, THIS_MODULE, xlate)
#define devm_of_phy_provider_register_full(dev, children, xlate) \
__devm_of_phy_provider_register(dev, children, THIS_MODULE, xlate)
static inline void phy_set_drvdata(struct phy *phy, void *data)
{
@ -147,11 +154,13 @@ struct phy *devm_phy_create(struct device *dev, struct device_node *node,
void phy_destroy(struct phy *phy);
void devm_phy_destroy(struct device *dev, struct phy *phy);
struct phy_provider *__of_phy_provider_register(struct device *dev,
struct module *owner, struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args));
struct device_node *children, struct module *owner,
struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args));
struct phy_provider *__devm_of_phy_provider_register(struct device *dev,
struct module *owner, struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args));
struct device_node *children, struct module *owner,
struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args));
void of_phy_provider_unregister(struct phy_provider *phy_provider);
void devm_of_phy_provider_unregister(struct device *dev,
struct phy_provider *phy_provider);
@ -312,15 +321,17 @@ static inline void devm_phy_destroy(struct device *dev, struct phy *phy)
}
static inline struct phy_provider *__of_phy_provider_register(
struct device *dev, struct module *owner, struct phy * (*of_xlate)(
struct device *dev, struct of_phandle_args *args))
struct device *dev, struct device_node *children, struct module *owner,
struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args))
{
return ERR_PTR(-ENOSYS);
}
static inline struct phy_provider *__devm_of_phy_provider_register(struct device
*dev, struct module *owner, struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args))
*dev, struct device_node *children, struct module *owner,
struct phy * (*of_xlate)(struct device *dev,
struct of_phandle_args *args))
{
return ERR_PTR(-ENOSYS);
}

30
include/linux/phy/tegra/xusb.h Normal file
View File

@ -0,0 +1,30 @@
/*
* Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
*
* 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 details.
*/
#ifndef PHY_TEGRA_XUSB_H
#define PHY_TEGRA_XUSB_H
struct tegra_xusb_padctl;
struct device;
struct tegra_xusb_padctl *tegra_xusb_padctl_get(struct device *dev);
void tegra_xusb_padctl_put(struct tegra_xusb_padctl *padctl);
int tegra_xusb_padctl_usb3_save_context(struct tegra_xusb_padctl *padctl,
unsigned int port);
int tegra_xusb_padctl_hsic_set_idle(struct tegra_xusb_padctl *padctl,
unsigned int port, bool idle);
int tegra_xusb_padctl_usb3_set_lfps_detect(struct tegra_xusb_padctl *padctl,
unsigned int port, bool enable);
#endif /* PHY_TEGRA_XUSB_H */

1
include/soc/tegra/fuse.h
View File

@ -26,6 +26,7 @@
#define TEGRA_FUSE_SKU_CALIB_0 0xf0
#define TEGRA30_FUSE_SATA_CALIB 0x124
#define TEGRA_FUSE_USB_CALIB_EXT_0 0x250
#ifndef __ASSEMBLY__