[PATCH v3 3/6] pinctrl: Add documentation for SPMI PMIC pinctrl driver bindings

From: Ivan T. Ivanov
Date: Mon Aug 11 2014 - 11:41:50 EST

From: "Ivan T. Ivanov" <iivanov@xxxxxxxxxx>

DeviceTree binding documentation for Qualcomm SPMI PMIC GPIO and
MPP pinctrl drivers.

Signed-off-by: Ivan T. Ivanov <iivanov@xxxxxxxxxx>
---
.../devicetree/bindings/pinctrl/qcom,pmic-gpio.txt | 4 +
.../devicetree/bindings/pinctrl/qcom,pmic-mpp.txt | 179 +++++++++++++++++++++
include/dt-bindings/pinctrl/qcom,pmic-gpio.h | 35 ++++
include/dt-bindings/pinctrl/qcom,pmic-mpp.h | 70 ++++++++
4 files changed, 288 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,pmic-mpp.txt
create mode 100644 include/dt-bindings/pinctrl/qcom,pmic-mpp.h

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt b/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt
index 7e57102..c2d01b4 100644
--- a/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt
@@ -12,6 +12,8 @@ Qualcomm.
"qcom,pm8058-gpio"
"qcom,pm8917-gpio"
"qcom,pm8921-gpio"
+ "qcom,pm8941-gpio"
+ "qcom,pma8084-gpio"

- reg:
Usage: required
@@ -74,6 +76,8 @@ to specify in a pin configuration subnode:
gpio1-gpio40 for pm8058
gpio1-gpio38 for pm8917
gpio1-gpio44 for pm8921
+ gpio1-gpio36 for pm8941
+ gpio1-gpio22 for pma8084

- function:
Usage: required
diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,pmic-mpp.txt b/Documentation/devicetree/bindings/pinctrl/qcom,pmic-mpp.txt
new file mode 100644
index 0000000..0a64567
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,pmic-mpp.txt
@@ -0,0 +1,179 @@
+Qualcomm PMIC Multi-Purpose Pin (MPP) block
+
+This binding describes the MPP block(s) found in the 8xxx series of pmics from
+Qualcomm.
+
+- compatible:
+ Usage: required
+ Value type: <string>
+ Definition: must be one of:
+ "qcom,pm8841-mpp"
+ "qcom,pm8941-mpp"
+ "qcom,pma8084-mpp"
+
+- reg:
+ Usage: required
+ Value type: <u32>
+ Definition: Register base of the gpio block
+
+- interrupts:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: Must contain an array of encoded interrupt specifiers for
+ each available gpio
+
+- gpio-controller:
+ Usage: required
+ Value type: <none>
+ Definition: Mark the device node as a GPIO controller
+
+- #gpio-cells:
+ Usage: required
+ Value type: <u32>
+ Definition: Must be 2;
+ the first cell will be used to define gpio number and the
+ second denotes the flags for this gpio
+
+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".
+
+The pin configuration nodes act as a container for an abitrary number of
+subnodes. Each of these subnodes represents some desired configuration for a
+pin or a list of pins. This configuration can include the
+mux function to select on those pin(s), and various pin configuration
+parameters, as listed below.
+
+
+SUBNODES:
+
+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:
+ Usage: required
+ Value type: <string-array>
+ Definition: List of gpio pins affected by the properties specified in
+ this subnode. Valid pins are:
+ mpp1-mpp4 for pm8841
+ mpp1-mpp8 for pm8941
+ mpp1-mpp4 for pma8084
+
+- function:
+ Usage: optional
+ Value type: <string>
+ Definition: Specify the alternative function to be configured for the
+ specified pins. Valid values are:
+ "normal",
+ "paired",
+ "dtest1",
+ "dtest2",
+ "dtest3",
+ "dtest4"
+
+- qcom,mode:
+ Usage: optional
+ Value type: <u32>
+ Definition: Selects MPP mode of operation: Digital Input, Digital Output,
+ Digital Input and Digital Output, Bidirectional Logic,
+ Analog Input, Analog Output, Current Sink Valid values are
+ defined in <dt-bindings/pinctrl/qcom,pmic-mpp.h>
+ PMIC_MPP_MODE_DI, PMIC_MPP_MODE_DO, PMIC_MPP_MODE_DIO...
+
+- bias-disable:
+ Usage: optional
+ Value type: <none>
+ Definition: The specified pins should be configued as no pull.
+
+- bias-pull-up:
+ Usage: optional
+ Value type: <u32>
+ Definition: The specified pins should be configued as pull up.
+ Valid values are 600, 10000 and 30000.
+
+- bias-high-impedance:
+ Usage: optional
+ Value type: <none>
+ Definition: The specified pins will put in high-Z mode and disabled.
+
+- input-enable:
+ Usage: optional
+ Value type: <none>
+ Definition: The specified pins are put in input mode.
+
+- output-high:
+ Usage: optional
+ Value type: <none>
+ Definition: The specified pins are configured in output mode, driven
+ high.
+
+- output-low:
+ Usage: optional
+ Value type: <none>
+ Definition: The specified pins are configured in output mode, driven
+ low.
+
+- power-source:
+ Usage: optional
+ Value type: <u32>
+ Definition: Selects the power source for the specified pins. Valid only
+ when pin operate in Digital I/O mode ("gpio"). Valid
+ power sources are defined in
+ <dt-bindings/pinctrl/qcom,pmic-mpp.h>
+
+- drive-strength:
+ Usage: optional
+ Value type: <u32>
+ Definition: Selects the drive strength for the specified pins. Value
+ drive strengths are: 5-40mA with 5mA step
+
+- qcom,amux-route:
+ Usage: optional
+ Value type: <u32>
+ Definition: Selects the source for analog input. Valid values are
+ defined in <dt-bindings/pinctrl/qcom,pmic-mpp.h>
+ PMIC_MPP_AMUX_ROUTE_CH5, PMIC_MPP_AMUX_ROUTE_CH6...
+
+- qcom,vrefence:
+ Usage: optional
+ Value type: <u32>
+ Definition: Selects the analog output voltage reference. Valid values
+ are defined in <dt-bindings/pinctrl/qcom,pmic-mpp.h>
+ PMIC_MPP_VREFERENCE_1V25, PMIC_MPP_VREFERENCE_0V625...
+
+Example:
+
+ mpps@a000 {
+ compatible = "qcom,pm8841-mpp";
+ reg = <0xa000>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupts = <4 0xa0 0 0>, <4 0xa1 0 0>, <4 0xa2 0 0>, <4 0xa3 0 0>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&pm8841_default>;
+
+ pm8841_default: default {
+ gpio {
+ pins = "mpp1", "mpp2", "mpp3", "mpp4";
+ function = "normal";
+
+ input-enable;
+
+ power-source = <PM8841_MPP_S3>;
+ bias-pull-up = <600>;
+ };
+ };
+ };
diff --git a/include/dt-bindings/pinctrl/qcom,pmic-gpio.h b/include/dt-bindings/pinctrl/qcom,pmic-gpio.h
index 994e748..b208fdd 100644
--- a/include/dt-bindings/pinctrl/qcom,pmic-gpio.h
+++ b/include/dt-bindings/pinctrl/qcom,pmic-gpio.h
@@ -63,6 +63,24 @@
#define PM8921_GPIO_L3 5
#define PM8921_GPIO_L17 6

+/*
+ * Note: PM8941 gpios from 15 to 18 are supporting
+ * only S3 and L6 options (1.8V)
+ */
+#define PM8941_GPIO_VPH 0
+#define PM8941_GPIO_L1 1
+#define PM8941_GPIO_S3 2
+#define PM8941_GPIO_L6 3
+
+/*
+ * Note: PMA8084 gpios from 15 to 18 are supporting
+ * only S4 and L6 options (1.8V)
+ */
+#define PMA8084_GPIO_VPH 0
+#define PMA8084_GPIO_L1 1
+#define PMA8084_GPIO_S4 2
+#define PMA8084_GPIO_L6 3
+
/* To be used with "function = " */
#define PMIC_GPIO_FUNC_NORMAL "normal"
#define PMIC_GPIO_FUNC_PAIRED "paired"
@@ -104,4 +122,21 @@
#define PM8917_GPIO37_38_XO_SLEEP_CLK PMIC_GPIO_FUNC_FUNC1
#define PM8917_GPIO37_38_MP3_CLK PMIC_GPIO_FUNC_FUNC2

+#define PM8941_GPIO9_14_KYPD_DRV PMIC_GPIO_FUNC_FUNC1
+#define PM8941_GPIO15_18_DIV_CLK PMIC_GPIO_FUNC_FUNC1
+#define PM8941_GPIO15_18_SLEEP_CLK PMIC_GPIO_FUNC_FUNC2
+#define PM8941_GPIO23_26_KYPD_DRV PMIC_GPIO_FUNC_FUNC1
+#define PM8941_GPIO23_26_LPG_DRV_HI PMIC_GPIO_FUNC_FUNC2
+#define PM8941_GPIO31_BAT_ALRM_OUT PMIC_GPIO_FUNC_FUNC1
+#define PM8941_GPIO33_36_LPG_DRV_3D PMIC_GPIO_FUNC_FUNC1
+#define PM8941_GPIO33_36_LPG_DRV_HI PMIC_GPIO_FUNC_FUNC2
+
+#define PMA8084_GPIO4_5_LPG_DRV PMIC_GPIO_FUNC_FUNC1
+#define PMA8084_GPIO7_10_LPG_DRV PMIC_GPIO_FUNC_FUNC1
+#define PMA8084_GPIO5_14_KEYP_DRV PMIC_GPIO_FUNC_FUNC2
+#define PMA8084_GPIO19_21_KEYP_DRV PMIC_GPIO_FUNC_FUNC2
+#define PMA8084_GPIO15_18_DIV_CLK PMIC_GPIO_FUNC_FUNC1
+#define PMA8084_GPIO15_18_SLEEP_CLK PMIC_GPIO_FUNC_FUNC2
+#define PMA8084_GPIO22_BAT_ALRM_OUT PMIC_GPIO_FUNC_FUNC1
+
#endif
diff --git a/include/dt-bindings/pinctrl/qcom,pmic-mpp.h b/include/dt-bindings/pinctrl/qcom,pmic-mpp.h
new file mode 100644
index 0000000..1bda99d
--- /dev/null
+++ b/include/dt-bindings/pinctrl/qcom,pmic-mpp.h
@@ -0,0 +1,70 @@
+/*
+ * This header provides constants for the Qualcomm PMIC's
+ * Multi-Purpose Pin binding.
+ */
+
+#ifndef _DT_BINDINGS_PINCTRL_QCOM_PMIC_MPP_H
+#define _DT_BINDINGS_PINCTRL_QCOM_PMIC_MPP_H
+
+/* power-source */
+#define PM8841_MPP_VPH 0
+#define PM8841_MPP_S3 2
+
+#define PM8941_MPP_VPH 0
+#define PM8941_MPP_L1 1
+#define PM8941_MPP_S3 2
+#define PM8941_MPP_L6 3
+
+#define PMA8084_MPP_VPH 0
+#define PMA8084_MPP_L1 1
+#define PMA8084_MPP_S4 2
+#define PMA8084_MPP_L6 3
+
+/*
+ * Analog Output - Set the analog output voltage reference.
+ * To be used with "qcom,vrefence = <>"
+ */
+#define PMIC_MPP_VREFERENCE_1V25 0
+#define PMIC_MPP_VREFERENCE_0V625 1
+#define PMIC_MPP_VREFERENCE_0V3125 2
+#define PMIC_MPP_VREFERENCE_PAIRED_MPP 3
+#define PMIC_MPP_VREFERENCE_ABUS1 4
+#define PMIC_MPP_VREFERENCE_ABUS2 5
+#define PMIC_MPP_VREFERENCE_ABUS3 6
+#define PMIC_MPP_VREFERENCE_ABUS4 7
+
+/*
+ * Analog Input - Set the source for analog input.
+ * To be used with "qcom,amux-route = <>"
+ */
+#define PMIC_MPP_AMUX_ROUTE_CH5 0
+#define PMIC_MPP_AMUX_ROUTE_CH6 1
+#define PMIC_MPP_AMUX_ROUTE_CH7 2
+#define PMIC_MPP_AMUX_ROUTE_CH8 3
+#define PMIC_MPP_AMUX_ROUTE_ABUS1 4
+#define PMIC_MPP_AMUX_ROUTE_ABUS2 5
+#define PMIC_MPP_AMUX_ROUTE_ABUS3 6
+#define PMIC_MPP_AMUX_ROUTE_ABUS4 7
+
+/*
+ * Mode select - indicates whether the pin should be digital input, output, both
+ * or analog input, output or current sink. To be used with "qcom,mode = <>"
+ */
+#define PMIC_MPP_MODE_DI 0
+#define PMIC_MPP_MODE_DO 1
+#define PMIC_MPP_MODE_DIO 2
+#define PMIC_MPP_MODE_AIO 3
+#define PMIC_MPP_MODE_AI 4
+#define PMIC_MPP_MODE_AO 5
+#define PMIC_MPP_MODE_CS 6
+
+/* To be used with "function = " */
+#define PMIC_MPP_FUNC_NORMAL "normal"
+#define PMIC_MPP_FUNC_PAIRED "paired"
+#define PMIC_MPP_FUNC_DTEST1 "dtest1"
+#define PMIC_MPP_FUNC_DTEST2 "dtest2"
+#define PMIC_MPP_FUNC_DTEST3 "dtest3"
+#define PMIC_MPP_FUNC_DTEST4 "dtest4"
+
+#endif
+
--
1.8.3.2

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