You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
114 lines
4.0 KiB
114 lines
4.0 KiB
From 425015979d3b1600d14403be7d6d64ba1238e58d Mon Sep 17 00:00:00 2001
|
|
From: Andy Gross <agross@codeaurora.org>
|
|
Date: Mon, 14 Apr 2014 22:10:36 -0500
|
|
Subject: [PATCH 041/182] dt: Document Qualcomm IPQ8064 pinctrl binding
|
|
|
|
Define a new binding for the Qualcomm TLMMv2 based pin controller inside the
|
|
IPQ8064.
|
|
|
|
Signed-off-by: Andy Gross <agross@codeaurora.org>
|
|
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
|
|
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
---
|
|
.../bindings/pinctrl/qcom,ipq8064-pinctrl.txt | 95 ++++++++++++++++++++
|
|
1 file changed, 95 insertions(+)
|
|
create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,ipq8064-pinctrl.txt
|
|
|
|
--- /dev/null
|
|
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,ipq8064-pinctrl.txt
|
|
@@ -0,0 +1,95 @@
|
|
+Qualcomm IPQ8064 TLMM block
|
|
+
|
|
+Required properties:
|
|
+- compatible: "qcom,ipq8064-pinctrl"
|
|
+- reg: Should be the base address and length of the TLMM block.
|
|
+- interrupts: Should be the parent IRQ of the TLMM block.
|
|
+- interrupt-controller: Marks the device node as an interrupt controller.
|
|
+- #interrupt-cells: Should be two.
|
|
+- gpio-controller: Marks the device node as a GPIO controller.
|
|
+- #gpio-cells : Should be two.
|
|
+ The first cell is the gpio pin number and the
|
|
+ second cell is used for optional parameters.
|
|
+
|
|
+Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
|
|
+a general description of GPIO and interrupt bindings.
|
|
+
|
|
+Please refer to pinctrl-bindings.txt in this directory for details of the
|
|
+common pinctrl bindings used by client devices, including the meaning of the
|
|
+phrase "pin configuration node".
|
|
+
|
|
+Qualcomm's pin configuration nodes act as a container for an abitrary number of
|
|
+subnodes. Each of these subnodes represents some desired configuration for a
|
|
+pin, a group, or a list of pins or groups. This configuration can include the
|
|
+mux function to select on those pin(s)/group(s), and various pin configuration
|
|
+parameters, such as pull-up, drive strength, etc.
|
|
+
|
|
+The name of each subnode is not important; all subnodes should be enumerated
|
|
+and processed purely based on their content.
|
|
+
|
|
+Each subnode only affects those parameters that are explicitly listed. In
|
|
+other words, a subnode that lists a mux function but no pin configuration
|
|
+parameters implies no information about any pin configuration parameters.
|
|
+Similarly, a pin subnode that describes a pullup parameter implies no
|
|
+information about e.g. the mux function.
|
|
+
|
|
+
|
|
+The following generic properties as defined in pinctrl-bindings.txt are valid
|
|
+to specify in a pin configuration subnode:
|
|
+
|
|
+ pins, function, bias-disable, bias-pull-down, bias-pull,up, drive-strength,
|
|
+ output-low, output-high.
|
|
+
|
|
+Non-empty subnodes must specify the 'pins' property.
|
|
+
|
|
+Valid values for qcom,pins are:
|
|
+ gpio0-gpio68
|
|
+ Supports mux, bias, and drive-strength
|
|
+
|
|
+ sdc3_clk, sdc3_cmd, sdc3_data
|
|
+ Supports bias and drive-strength
|
|
+
|
|
+
|
|
+Valid values for function are:
|
|
+ mdio, mi2s, pdm, ssbi, spmi, audio_pcm, gsbi1, gsbi2, gsbi4, gsbi5,
|
|
+ gsbi5_spi_cs1, gsbi5_spi_cs2, gsbi5_spi_cs3, gsbi6, gsbi7, nss_spi, sdc1,
|
|
+ spdif, nand, tsif1, tsif2, usb_fs_n, usb_fs, usb2_hsic, rgmii2, sata,
|
|
+ pcie1_rst, pcie1_prsnt, pcie1_pwren_n, pcie1_pwren, pcie1_pwrflt,
|
|
+ pcie1_clk_req, pcie2_rst, pcie2_prsnt, pcie2_pwren_n, pcie2_pwren,
|
|
+ pcie2_pwrflt, pcie2_clk_req, pcie3_rst, pcie3_prsnt, pcie3_pwren_n,
|
|
+ pcie3_pwren, pcie3_pwrflt, pcie3_clk_req, ps_hold
|
|
+
|
|
+Example:
|
|
+
|
|
+ pinmux: pinctrl@800000 {
|
|
+ compatible = "qcom,ipq8064-pinctrl";
|
|
+ reg = <0x800000 0x4000>;
|
|
+
|
|
+ gpio-controller;
|
|
+ #gpio-cells = <2>;
|
|
+ interrupt-controller;
|
|
+ #interrupt-cells = <2>;
|
|
+ interrupts = <0 32 0x4>;
|
|
+
|
|
+ pinctrl-names = "default";
|
|
+ pinctrl-0 = <&gsbi5_uart_default>;
|
|
+
|
|
+ gsbi5_uart_default: gsbi5_uart_default {
|
|
+ mux {
|
|
+ pins = "gpio18", "gpio19";
|
|
+ function = "gsbi5";
|
|
+ };
|
|
+
|
|
+ tx {
|
|
+ pins = "gpio18";
|
|
+ drive-strength = <4>;
|
|
+ bias-disable;
|
|
+ };
|
|
+
|
|
+ rx {
|
|
+ pins = "gpio19";
|
|
+ drive-strength = <2>;
|
|
+ bias-pull-up;
|
|
+ };
|
|
+ };
|
|
+ };
|
|
|