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Message-Id: <1403072180-4944-4-git-send-email-abrestic@chromium.org>
Date: Tue, 17 Jun 2014 23:16:14 -0700
From: Andrew Bresticker <abrestic@...omium.org>
To: devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-usb@...r.kernel.org
Cc: Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Randy Dunlap <rdunlap@...radead.org>,
Stephen Warren <swarren@...dotorg.org>,
Thierry Reding <thierry.reding@...il.com>,
Russell King <linux@....linux.org.uk>,
Linus Walleij <linus.walleij@...aro.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Mathias Nyman <mathias.nyman@...el.com>,
Grant Likely <grant.likely@...aro.org>,
Alan Stern <stern@...land.harvard.edu>,
Kishon Vijay Abraham I <kishon@...com>,
Arnd Bergmann <arnd@...db.de>,
Andrew Bresticker <abrestic@...omium.org>
Subject: [PATCH v1 3/9] of: Update Tegra XUSB pad controller binding for USB
Add new bindings used for USB support by the Tegra XUSB pad controller.
This includes additional PHY types, USB-specific pinconfig properties, etc.
Signed-off-by: Andrew Bresticker <abrestic@...omium.org>
---
.../pinctrl/nvidia,tegra124-xusb-padctl.txt | 53 ++++++++++++++++++++--
include/dt-bindings/pinctrl/pinctrl-tegra-xusb.h | 7 +++
2 files changed, 56 insertions(+), 4 deletions(-)
diff --git a/Documentation/devicetree/bindings/pinctrl/nvidia,tegra124-xusb-padctl.txt b/Documentation/devicetree/bindings/pinctrl/nvidia,tegra124-xusb-padctl.txt
index 2f9c0bd..6181019 100644
--- a/Documentation/devicetree/bindings/pinctrl/nvidia,tegra124-xusb-padctl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/nvidia,tegra124-xusb-padctl.txt
@@ -21,6 +21,12 @@ Required properties:
- padctl
- #phy-cells: Should be 1. The specifier is the index of the PHY to reference.
See <dt-bindings/pinctrl/pinctrl-tegra-xusb.h> for the list of valid values.
+- nvidia,xusb-mbox: Handle to the Tegra XUSB mailbox node.
+
+Optional properties:
+-------------------
+- vbus-otg-{0,1,2}-supply: VBUS regulator for the corresponding UTMI pad.
+- vddio-hsic-supply: VDDIO regulator for the HSIC pads.
Lane muxing:
------------
@@ -50,6 +56,16 @@ Optional properties:
pin or group should be assigned to. Valid values for function names are
listed below.
- nvidia,iddq: Enables IDDQ mode of the lane. (0: no, 1: yes)
+- nvidia,usb3-port-num: USB3 port (0 or 1) to which the lane is mapped.
+- nvidia,usb2-port-num: USB2 port (0, 1, or 2) to which the lane is mapped.
+- nvidia,hsic-strobe-trim: HSIC strobe trimmer value.
+- nvidia,hsic-rx-strobe-trim: HSIC RX strobe trimmer value.
+- nvidia,hsic-rx-data-trim: HSIC RX data trimmer value.
+- nvidia,hsic-tx-rtune-n: HSIC TX RTUNEN value.
+- nvidia,hsic-tx-rtune-p: HSIC TX RTUNEP value.
+- nvidia,hsic-tx-slew-n: HSIC TX SLEWN value.
+- nvidia,hsic-tx-slew-p: HSIC TX SLEWP value.
+- nvidia,hsic-auto-term: Enables HSIC AUTO_TERM. (0: no, 1: yes)
Note that not all of these properties are valid for all lanes. Lanes can be
divided into three groups:
@@ -58,18 +74,25 @@ divided into three groups:
Valid functions for this group are: "snps", "xusb", "uart", "rsvd".
- The nvidia,iddq property does not apply to this group.
+ The nvidia,iddq, nvidia,usb3-port-num, nvidia,usb2-port-num, and
+ nvidia,hsic-* properties do not apply to this group.
- ulpi-0, hsic-0, hsic-1:
Valid functions for this group are: "snps", "xusb".
- The nvidia,iddq property does not apply to this group.
+ The nvidia,iddq, nvidia,usb3-port-num, and nvidia,usb2-port-num
+ properties do not apply to this group. The nvidia,hsic-* properties
+ apply only to the pins hsic-{0,1} when the function is xusb.
- pcie-0, pcie-1, pcie-2, pcie-3, pcie-4, sata-0:
Valid functions for this group are: "pcie", "usb3", "sata", "rsvd".
+ The nvidia,usb3-port-num and nvidia,usb2-port-num properties only
+ apply and are required when the function is usb3. The nvidia,hsic-*
+ properties do not apply to this group.
+
Example:
========
@@ -83,6 +106,8 @@ SoC file extract:
resets = <&tegra_car 142>;
reset-names = "padctl";
+ nvidia,xusb-mbox = <&mbox>;
+
#phy-cells = <1>;
};
@@ -100,15 +125,35 @@ Board file extract:
...
+ usb@0,70090000 {
+ ...
+
+ phys = <&padctl 5>, <&padctl 6>, <&padctl 7>;
+ phy-names = "utmi-1", "utmi-2", "usb3-0";
+
+ ...
+ }
+
+ ...
+
padctl: padctl@0,7009f000 {
pinctrl-0 = <&padctl_default>;
pinctrl-names = "default";
+ vbus-otg-2-supply = <&vdd_usb3_vbus>;
+
padctl_default: pinmux {
- usb3 {
- nvidia,lanes = "pcie-0", "pcie-1";
+ otg {
+ nvidia,lanes = "otg-1", "otg-2";
+ nvidia,function = "xusb";
+ };
+
+ usb3p0 {
+ nvidia,lanes = "pcie-0";
nvidia,function = "usb3";
nvidia,iddq = <0>;
+ nvidia,usb3-port-num = <0>;
+ nvidia,usb2-port-num = <2>;
};
pcie {
diff --git a/include/dt-bindings/pinctrl/pinctrl-tegra-xusb.h b/include/dt-bindings/pinctrl/pinctrl-tegra-xusb.h
index 914d56d..c83a4d4 100644
--- a/include/dt-bindings/pinctrl/pinctrl-tegra-xusb.h
+++ b/include/dt-bindings/pinctrl/pinctrl-tegra-xusb.h
@@ -3,5 +3,12 @@
#define TEGRA_XUSB_PADCTL_PCIE 0
#define TEGRA_XUSB_PADCTL_SATA 1
+#define TEGRA_XUSB_PADCTL_USB3_P0 2
+#define TEGRA_XUSB_PADCTL_USB3_P1 3
+#define TEGRA_XUSB_PADCTL_UTMI_P0 4
+#define TEGRA_XUSB_PADCTL_UTMI_P1 5
+#define TEGRA_XUSB_PADCTL_UTMI_P2 6
+#define TEGRA_XUSB_PADCTL_HSIC_P0 7
+#define TEGRA_XUSB_PADCTL_HSIC_P1 8
#endif /* _DT_BINDINGS_PINCTRL_TEGRA_XUSB_H */
--
2.0.0.526.g5318336
--
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