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authorOlof Johansson <olof@lixom.net>2013-06-14 18:09:41 -0700
committerOlof Johansson <olof@lixom.net>2013-06-14 18:09:41 -0700
commit36d29fb57ccbf3cea2e46fea2ef5f0ffc22308e4 (patch)
tree60038ef374cbfd97b1f75c14c6b44f5dde9c2d8d /Documentation/devicetree/bindings/usb
parent3b2e6296abeefb6f602e1cf1bd67e4e3a9b9ee7e (diff)
parent23037bbd9661b53236ebe934c77952e8f73f1c7a (diff)
Merge tag 'tegra-for-3.11-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/dt
From Stephen Warren: ARM: tegra: device tree updates This branch contains all device tree updates for Tegra boards. The changes are: * Converted all DT files to use the C pre-processor, to support the use of named constants. This included use of defines for GPIO, IRQ, and clock constants. * Enabling new features such as: - SPI on Dalmore. - Audio on Dalmore and Beaver. - gpio-leds on Beaver. - Power-supply/batter linkage on Dalmore. * A minor fix to the RAM size node on Beaver. It is based on previous pull request tegra-for-3.11-deps-for-usb followed by a merge of tegra-for-3.11-deps-for-clk. * tag 'tegra-for-3.11-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra: (21 commits) ARM: tegra: enable audio on Beaver ARM: tegra: enable audio on Dalmore ARM: tegra: add power-supplies link between battery and charger ARM: tegra: add audio-related nodes to Tegra114 DT ARM: tegra114: convert device tree files to use CLK defines ARM: tegra30: convert device tree files to use CLK defines ARM: tegra20: convert device tree files to use CLK defines ARM: tegra: Add charger subnode to tps65090 node ARM: tegra: convert device tree files to use IRQ defines ARM: tegra: convert device tree files to use GPIO defines ARM: tegra: create a DT header defining GPIO IDs ARM: tegra: use #include for all device trees ARM: tegra: Add gpio-leds to Tegra30 Beaver ARM: tegra: fix memory size on Beaver ARM: tegra: enable spi4 on Dalmore ARM: tegra114: create a DT header defining CLK IDs ARM: tegra30: create a DT header defining CLK IDs ARM: tegra20: create a DT header defining CLK IDs ARM: tegra: update device trees for USB binding rework ARM: tegra: modify ULPI reset GPIO properties ... Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'Documentation/devicetree/bindings/usb')
-rw-r--r--Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt27
-rw-r--r--Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt41
2 files changed, 43 insertions, 25 deletions
diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
index 34c95288327..df0933043a5 100644
--- a/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
+++ b/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
@@ -6,27 +6,10 @@ Practice : Universal Serial Bus" with the following modifications
and additions :
Required properties :
- - compatible : Should be "nvidia,tegra20-ehci" for USB controllers
- used in host mode.
- - phy_type : Should be one of "ulpi" or "utmi".
- - nvidia,vbus-gpio : If present, specifies a gpio that needs to be
- activated for the bus to be powered.
- - nvidia,phy : phandle of the PHY instance, the controller is connected to.
-
-Required properties for phy_type == ulpi:
- - nvidia,phy-reset-gpio : The GPIO used to reset the PHY.
+ - compatible : Should be "nvidia,tegra20-ehci".
+ - nvidia,phy : phandle of the PHY that the controller is connected to.
+ - clocks : Contains a single entry which defines the USB controller's clock.
Optional properties:
- - dr_mode : dual role mode. Indicates the working mode for
- nvidia,tegra20-ehci compatible controllers. Can be "host", "peripheral",
- or "otg". Default to "host" if not defined for backward compatibility.
- host means this is a host controller
- peripheral means it is device controller
- otg means it can operate as either ("on the go")
- - nvidia,has-legacy-mode : boolean indicates whether this controller can
- operate in legacy mode (as APX 2500 / 2600). In legacy mode some
- registers are accessed through the APB_MISC base address instead of
- the USB controller. Since this is a legacy issue it probably does not
- warrant a compatible string of its own.
- - nvidia,needs-double-reset : boolean is to be set for some of the Tegra2
- USB ports, which need reset twice due to hardware issues.
+ - nvidia,needs-double-reset : boolean is to be set for some of the Tegra20
+ USB ports, which need reset twice due to hardware issues.
diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt
index 6bdaba2f0aa..c4c9e9e664a 100644
--- a/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt
+++ b/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt
@@ -4,14 +4,49 @@ The device node for Tegra SOC USB PHY:
Required properties :
- compatible : Should be "nvidia,tegra20-usb-phy".
- - reg : Address and length of the register set for the USB PHY interface.
- - phy_type : Should be one of "ulpi" or "utmi".
+ - reg : Defines the following set of registers, in the order listed:
+ - The PHY's own register set.
+ Always present.
+ - The register set of the PHY containing the UTMI pad control registers.
+ Present if-and-only-if phy_type == utmi.
+ - phy_type : Should be one of "utmi", "ulpi" or "hsic".
+ - clocks : Defines the clocks listed in the clock-names property.
+ - clock-names : The following clock names must be present:
+ - reg: The clock needed to access the PHY's own registers. This is the
+ associated EHCI controller's clock. Always present.
+ - pll_u: PLL_U. Always present.
+ - timer: The timeout clock (clk_m). Present if phy_type == utmi.
+ - utmi-pads: The clock needed to access the UTMI pad control registers.
+ Present if phy_type == utmi.
+ - ulpi-link: The clock Tegra provides to the ULPI PHY (cdev2).
+ Present if phy_type == ulpi, and ULPI link mode is in use.
Required properties for phy_type == ulpi:
- nvidia,phy-reset-gpio : The GPIO used to reset the PHY.
+Required PHY timing params for utmi phy:
+ - nvidia,hssync-start-delay : Number of 480 Mhz clock cycles to wait before
+ start of sync launches RxActive
+ - nvidia,elastic-limit : Variable FIFO Depth of elastic input store
+ - nvidia,idle-wait-delay : Number of 480 Mhz clock cycles of idle to wait
+ before declare IDLE.
+ - nvidia,term-range-adj : Range adjusment on terminations
+ - nvidia,xcvr-setup : HS driver output control
+ - nvidia,xcvr-lsfslew : LS falling slew rate control.
+ - nvidia,xcvr-lsrslew : LS rising slew rate control.
+
Optional properties:
- nvidia,has-legacy-mode : boolean indicates whether this controller can
operate in legacy mode (as APX 2500 / 2600). In legacy mode some
registers are accessed through the APB_MISC base address instead of
- the USB controller. \ No newline at end of file
+ the USB controller.
+ - nvidia,is-wired : boolean. Indicates whether we can do certain kind of power
+ optimizations for the devices that are always connected. e.g. modem.
+ - dr_mode : dual role mode. Indicates the working mode for the PHY. Can be
+ "host", "peripheral", or "otg". Defaults to "host" if not defined.
+ host means this is a host controller
+ peripheral means it is device controller
+ otg means it can operate as either ("on the go")
+
+Required properties for dr_mode == otg:
+ - vbus-supply: regulator for VBUS