dt-bindings: regulator/clock/mfd: Reorganize S2MPS-family bindings
authorKrzysztof Kozlowski <k.kozlowski@samsung.com>
Fri, 4 Dec 2015 01:10:03 +0000 (10:10 +0900)
committerLee Jones <lee.jones@linaro.org>
Thu, 14 Jan 2016 08:43:48 +0000 (08:43 +0000)
Bindings for Samsung S2M and S5M family PMICs are in mess. They are
spread over different files and subdirectories in a non-consistent way.
The devices and respective drivers for them share a lot in common so
everything could be organized in a more readable way.

Reorganize the S2MPS11/13/14/15 Device Tree bindings to match the
drivers for this family of devices:
 - move mfd/s2mps11.txt to mfd/samsung,sec-core.txt for the main MFD
   driver (common for entire family),
 - split clock block to clock/samsung,s2mps11.txt,
 - split regulator block to regulator/samsung,s2mps11.txt.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Michael Turquette <mturquette@baylibre.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Documentation/devicetree/bindings/clock/samsung,s2mps11.txt [new file with mode: 0644]
Documentation/devicetree/bindings/mfd/s2mps11.txt [deleted file]
Documentation/devicetree/bindings/mfd/samsung,sec-core.txt [new file with mode: 0644]
Documentation/devicetree/bindings/regulator/samsung,s2mps11.txt [new file with mode: 0644]
MAINTAINERS

diff --git a/Documentation/devicetree/bindings/clock/samsung,s2mps11.txt b/Documentation/devicetree/bindings/clock/samsung,s2mps11.txt
new file mode 100644 (file)
index 0000000..2726c1d
--- /dev/null
@@ -0,0 +1,49 @@
+Binding for Samsung S2M and S5M family clock generator block
+============================================================
+
+This is a part of device tree bindings for S2M and S5M family multi-function
+devices.
+More information can be found in bindings/mfd/sec-core.txt file.
+
+The S2MPS11/13/15 and S5M8767 provide three(AP/CP/BT) buffered 32.768 kHz
+outputs. The S2MPS14 provides two (AP/BT) buffered 32.768 KHz outputs.
+
+To register these as clocks with common clock framework instantiate under
+main device node a sub-node named "clocks".
+
+It uses the common clock binding documented in:
+ - Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+
+Required properties of the "clocks" sub-node:
+ - #clock-cells: should be 1.
+ - compatible: Should be one of: "samsung,s2mps11-clk", "samsung,s2mps13-clk",
+               "samsung,s2mps14-clk", "samsung,s5m8767-clk"
+   The S2MPS15 uses the same compatible as S2MPS13, as both provides similar
+   clocks.
+
+
+Each clock is assigned an identifier and client nodes use this identifier
+to specify the clock which they consume.
+    Clock               ID           Devices
+    ----------------------------------------------------------
+    32KhzAP            0            S2MPS11/13/14/15, S5M8767
+    32KhzCP            1            S2MPS11/13/15, S5M8767
+    32KhzBT            2            S2MPS11/13/14/15, S5M8767
+
+Include dt-bindings/clock/samsung,s2mps11.h file to use preprocessor defines
+in device tree sources.
+
+
+Example:
+
+       s2mps11_pmic@66 {
+               compatible = "samsung,s2mps11-pmic";
+               reg = <0x66>;
+
+               s2m_osc: clocks {
+                       compatible = "samsung,s2mps11-clk";
+                       #clock-cells = <1>;
+                       clock-output-names = "xx", "yy", "zz";
+               };
+       };
diff --git a/Documentation/devicetree/bindings/mfd/s2mps11.txt b/Documentation/devicetree/bindings/mfd/s2mps11.txt
deleted file mode 100644 (file)
index 09b94c9..0000000
+++ /dev/null
@@ -1,153 +0,0 @@
-
-* Samsung S2MPS11/13/14/15 and S2MPU02 Voltage and Current Regulator
-
-The Samsung S2MPS11 is a multi-function device which includes voltage and
-current regulators, RTC, charger controller and other sub-blocks. It is
-interfaced to the host controller using an I2C interface. Each sub-block is
-addressed by the host system using different I2C slave addresses.
-
-Required properties:
-- compatible: Should be one of the following
-       - "samsung,s2mps11-pmic"
-       - "samsung,s2mps13-pmic"
-       - "samsung,s2mps14-pmic"
-       - "samsung,s2mps15-pmic"
-       - "samsung,s2mpu02-pmic".
-- reg: Specifies the I2C slave address of the pmic block. It should be 0x66.
-
-Optional properties:
-- interrupt-parent: Specifies the phandle of the interrupt controller to which
-  the interrupts from s2mps11 are delivered to.
-- interrupts: Interrupt specifiers for interrupt sources.
-- samsung,s2mps11-wrstbi-ground: Indicates that WRSTBI pin of PMIC is pulled
-  down. When the system is suspended it will always go down thus triggerring
-  unwanted buck warm reset (setting buck voltages to default values).
-- samsung,s2mps11-acokb-ground: Indicates that ACOKB pin of S2MPS11 PMIC is
-  connected to the ground so the PMIC must manually set PWRHOLD bit in CTRL1
-  register to turn off the power. Usually the ACOKB is pulled up to VBATT so
-  when PWRHOLD pin goes low, the rising ACOKB will trigger power off.
-
-Optional nodes:
-- clocks: s2mps11, s2mps13, s2mps15 and s5m8767 provide three(AP/CP/BT) buffered 32.768
-  KHz outputs, so to register these as clocks with common clock framework
-  instantiate a sub-node named "clocks". It uses the common clock binding
-  documented in :
-  [Documentation/devicetree/bindings/clock/clock-bindings.txt]
-  The s2mps14 provides two (AP/BT) buffered 32.768 KHz outputs.
-  - #clock-cells: should be 1.
-
-  - The following is the list of clocks generated by the controller. Each clock
-    is assigned an identifier and client nodes use this identifier to specify
-    the clock which they consume.
-    Clock               ID           Devices
-    ----------------------------------------------------------
-    32KhzAP            0            S2MPS11, S2MPS13, S2MPS14, S2MPS15, S5M8767
-    32KhzCP            1            S2MPS11, S2MPS13, S2MPS15, S5M8767
-    32KhzBT            2            S2MPS11, S2MPS13, S2MPS14, S2MPS15, S5M8767
-
-  - compatible: Should be one of: "samsung,s2mps11-clk", "samsung,s2mps13-clk",
-               "samsung,s2mps14-clk", "samsung,s5m8767-clk"
-    The s2msp15 uses the same compatible as s2mps13, as both provides similar clocks.
-
-- regulators: The regulators of s2mps11 that have to be instantiated should be
-included in a sub-node named 'regulators'. Regulator nodes included in this
-sub-node should be of the format as listed below.
-
-       regulator_name {
-               [standard regulator constraints....];
-       };
-
- regulator-ramp-delay for BUCKs = [6250/12500/25000(default)/50000] uV/us
-
- BUCK[2/3/4/6] supports disabling ramp delay on hardware, so explicitly
- regulator-ramp-delay = <0> can be used for them to disable ramp delay.
- In the absence of the regulator-ramp-delay property, the default ramp
- delay will be used.
-
-NOTE: Some BUCKs share the ramp rate setting i.e. same ramp value will be set
-for a particular group of BUCKs. So provide same regulator-ramp-delay<value>.
-Grouping of BUCKs sharing ramp rate setting is as follow : BUCK[1, 6],
-BUCK[3, 4], and BUCK[7, 8, 10]
-
-On S2MPS14 the LDO10, LDO11 and LDO12 can be configured to external control
-over GPIO. To turn this feature on this property must be added to the regulator
-sub-node:
-       - samsung,ext-control-gpios: GPIO specifier for one GPIO
-               controlling this regulator (enable/disable);
-Example:
-       LDO12 {
-               regulator-name = "V_EMMC_2.8V";
-               regulator-min-microvolt = <2800000>;
-               regulator-max-microvolt = <2800000>;
-               samsung,ext-control-gpios = <&gpk0 2 0>;
-       };
-
-
-The regulator constraints inside the regulator nodes use the standard regulator
-bindings which are documented elsewhere.
-
-The following are the names of the regulators that the s2mps11 pmic block
-supports. Note: The 'n' in LDOn and BUCKn represents the LDO or BUCK number
-as per the datasheet of s2mps11.
-
-       - LDOn
-                 - valid values for n are:
-                       - S2MPS11: 1 to 38
-                       - S2MPS13: 1 to 40
-                       - S2MPS14: 1 to 25
-                       - S2MPS15: 1 to 27
-                       - S2MPU02: 1 to 28
-                 - Example: LDO1, LDO2, LDO28
-       - BUCKn
-                 - valid values for n are:
-                       - S2MPS11: 1 to 10
-                       - S2MPS13: 1 to 10
-                       - S2MPS14: 1 to 5
-                       - S2MPS15: 1 to 10
-                       - S2MPU02: 1 to 7
-                 - Example: BUCK1, BUCK2, BUCK9
-
-Example:
-
-       s2mps11_pmic@66 {
-               compatible = "samsung,s2mps11-pmic";
-               reg = <0x66>;
-
-               s2m_osc: clocks {
-                       compatible = "samsung,s2mps11-clk";
-                       #clock-cells = <1>;
-                       clock-output-names = "xx", "yy", "zz";
-               };
-
-               regulators {
-                       ldo1_reg: LDO1 {
-                               regulator-name = "VDD_ABB_3.3V";
-                               regulator-min-microvolt = <3300000>;
-                               regulator-max-microvolt = <3300000>;
-                       };
-
-                       ldo2_reg: LDO2 {
-                               regulator-name = "VDD_ALIVE_1.1V";
-                               regulator-min-microvolt = <1100000>;
-                               regulator-max-microvolt = <1100000>;
-                               regulator-always-on;
-                       };
-
-                       buck1_reg: BUCK1 {
-                               regulator-name = "vdd_mif";
-                               regulator-min-microvolt = <950000>;
-                               regulator-max-microvolt = <1350000>;
-                               regulator-always-on;
-                               regulator-boot-on;
-                       };
-
-                       buck2_reg: BUCK2 {
-                               regulator-name = "vdd_arm";
-                               regulator-min-microvolt = <950000>;
-                               regulator-max-microvolt = <1350000>;
-                               regulator-always-on;
-                               regulator-boot-on;
-                               regulator-ramp-delay = <50000>;
-                       };
-               };
-       };
diff --git a/Documentation/devicetree/bindings/mfd/samsung,sec-core.txt b/Documentation/devicetree/bindings/mfd/samsung,sec-core.txt
new file mode 100644 (file)
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--- /dev/null
@@ -0,0 +1,84 @@
+Binding for Samsung S2M and S5M family multi-function device
+============================================================
+
+This is a part of device tree bindings for S2M and S5M family multi-function
+devices.
+
+The Samsung S2MPS11/13/14/15, S2MPU02 and S5M8767 is a family
+of multi-function devices which include voltage and current regulators, RTC,
+charger controller, clock outputs and other sub-blocks. It is interfaced
+to the host controller using an I2C interface. Each sub-block is usually
+addressed by the host system using different I2C slave addresses.
+
+
+This document describes bindings for main device node. Optional sub-blocks
+must be a sub-nodes to it. Bindings for them can be found in:
+ - bindings/regulator/samsung,s2mps11.txt
+ - bindings/clock/samsung,s2mps11.txt
+
+
+Required properties:
+ - compatible: Should be one of the following
+       - "samsung,s2mps11-pmic",
+       - "samsung,s2mps13-pmic",
+       - "samsung,s2mps14-pmic",
+       - "samsung,s2mps15-pmic",
+       - "samsung,s2mpu02-pmic".
+ - reg: Specifies the I2C slave address of the pmic block. It should be 0x66.
+
+Optional properties:
+ - interrupt-parent: Specifies the phandle of the interrupt controller to which
+   the interrupts from s2mps11 are delivered to.
+ - interrupts: Interrupt specifiers for interrupt sources.
+ - samsung,s2mps11-wrstbi-ground: Indicates that WRSTBI pin of PMIC is pulled
+   down. When the system is suspended it will always go down thus triggerring
+   unwanted buck warm reset (setting buck voltages to default values).
+ - samsung,s2mps11-acokb-ground: Indicates that ACOKB pin of S2MPS11 PMIC is
+   connected to the ground so the PMIC must manually set PWRHOLD bit in CTRL1
+   register to turn off the power. Usually the ACOKB is pulled up to VBATT so
+   when PWRHOLD pin goes low, the rising ACOKB will trigger power off.
+
+Example:
+
+       s2mps11_pmic@66 {
+               compatible = "samsung,s2mps11-pmic";
+               reg = <0x66>;
+
+               s2m_osc: clocks {
+                       compatible = "samsung,s2mps11-clk";
+                       #clock-cells = <1>;
+                       clock-output-names = "xx", "yy", "zz";
+               };
+
+               regulators {
+                       ldo1_reg: LDO1 {
+                               regulator-name = "VDD_ABB_3.3V";
+                               regulator-min-microvolt = <3300000>;
+                               regulator-max-microvolt = <3300000>;
+                       };
+
+                       ldo2_reg: LDO2 {
+                               regulator-name = "VDD_ALIVE_1.1V";
+                               regulator-min-microvolt = <1100000>;
+                               regulator-max-microvolt = <1100000>;
+                               regulator-always-on;
+                       };
+
+                       buck1_reg: BUCK1 {
+                               regulator-name = "vdd_mif";
+                               regulator-min-microvolt = <950000>;
+                               regulator-max-microvolt = <1350000>;
+                               regulator-always-on;
+                               regulator-boot-on;
+                       };
+
+                       buck2_reg: BUCK2 {
+                               regulator-name = "vdd_arm";
+                               regulator-min-microvolt = <950000>;
+                               regulator-max-microvolt = <1350000>;
+                               regulator-always-on;
+                               regulator-boot-on;
+                               regulator-ramp-delay = <50000>;
+                       };
+               };
+       };
diff --git a/Documentation/devicetree/bindings/regulator/samsung,s2mps11.txt b/Documentation/devicetree/bindings/regulator/samsung,s2mps11.txt
new file mode 100644 (file)
index 0000000..27a48bf
--- /dev/null
@@ -0,0 +1,102 @@
+Binding for Samsung S2M family regulator block
+==============================================
+
+This is a part of device tree bindings for S2M family multi-function devices.
+More information can be found in bindings/mfd/sec-core.txt file.
+
+The S2MPS11/13/14/15 and S2MPU02 devices provide buck and LDO regulators.
+
+To register these with regulator framework instantiate under main device node
+a sub-node named "regulators" with more sub-nodes for each regulator using the
+common regulator binding documented in:
+ - Documentation/devicetree/bindings/regulator/regulator.txt
+
+
+Names of regulators supported by different devices:
+       - LDOn
+                 - valid values for n are:
+                       - S2MPS11: 1 to 38
+                       - S2MPS13: 1 to 40
+                       - S2MPS14: 1 to 25
+                       - S2MPS15: 1 to 27
+                       - S2MPU02: 1 to 28
+                 - Example: LDO1, LDO2, LDO28
+       - BUCKn
+                 - valid values for n are:
+                       - S2MPS11: 1 to 10
+                       - S2MPS13: 1 to 10
+                       - S2MPS14: 1 to 5
+                       - S2MPS15: 1 to 10
+                       - S2MPU02: 1 to 7
+                 - Example: BUCK1, BUCK2, BUCK9
+Note: The 'n' in LDOn and BUCKn represents the LDO or BUCK number
+as per the datasheet of device.
+
+
+Optional properties of the nodes under "regulators" sub-node:
+ - regulator-ramp-delay: ramp delay in uV/us. May be 6250, 12500,
+   25000 (default) or 50000.
+
+   Additionally S2MPS11 supports disabling ramp delay for BUCK{2,3,4,6}
+   by setting it to <0>.
+
+   Note: On S2MPS11 some bucks share the ramp rate setting i.e. same ramp value
+   will be set for a particular group of bucks so provide the same
+   regulator-ramp-delay value for them.
+   Groups sharing ramp rate:
+    - buck{1,6},
+    - buck{3,4},
+    - buck{7,8,10}.
+
+ - samsung,ext-control-gpios: On S2MPS14 the LDO10, LDO11 and LDO12 can be
+   configured to external control over GPIO. To turn this feature on this
+   property must be added to the regulator sub-node:
+    - samsung,ext-control-gpios: GPIO specifier for one GPIO
+                                 controlling this regulator (enable/disable)
+  Example:
+       LDO12 {
+               regulator-name = "V_EMMC_2.8V";
+               regulator-min-microvolt = <2800000>;
+               regulator-max-microvolt = <2800000>;
+               samsung,ext-control-gpios = <&gpk0 2 0>;
+       };
+
+
+Example:
+
+       s2mps11_pmic@66 {
+               compatible = "samsung,s2mps11-pmic";
+               reg = <0x66>;
+
+               regulators {
+                       ldo1_reg: LDO1 {
+                               regulator-name = "VDD_ABB_3.3V";
+                               regulator-min-microvolt = <3300000>;
+                               regulator-max-microvolt = <3300000>;
+                       };
+
+                       ldo2_reg: LDO2 {
+                               regulator-name = "VDD_ALIVE_1.1V";
+                               regulator-min-microvolt = <1100000>;
+                               regulator-max-microvolt = <1100000>;
+                               regulator-always-on;
+                       };
+
+                       buck1_reg: BUCK1 {
+                               regulator-name = "vdd_mif";
+                               regulator-min-microvolt = <950000>;
+                               regulator-max-microvolt = <1350000>;
+                               regulator-always-on;
+                               regulator-boot-on;
+                       };
+
+                       buck2_reg: BUCK2 {
+                               regulator-name = "vdd_arm";
+                               regulator-min-microvolt = <950000>;
+                               regulator-max-microvolt = <1350000>;
+                               regulator-always-on;
+                               regulator-boot-on;
+                               regulator-ramp-delay = <50000>;
+                       };
+               };
+       };
index 25b727556dc77a1fc4fe5428b7065ef89936f08b..2c0bbced0532d5a007d61acec712642c961d3d23 100644 (file)
@@ -9224,7 +9224,9 @@ F:        drivers/clk/clk-s2mps11.c
 F:     drivers/rtc/rtc-s5m.c
 F:     include/linux/mfd/samsung/
 F:     Documentation/devicetree/bindings/regulator/s5m8767-regulator.txt
-F:     Documentation/devicetree/bindings/mfd/s2mp*.txt
+F:     Documentation/devicetree/bindings/mfd/samsung,sec-core.txt
+F:     Documentation/devicetree/bindings/regulator/samsung,s2m*.txt
+F:     Documentation/devicetree/bindings/clock/samsung,s2mps11.txt
 
 SAMSUNG S5P/EXYNOS4 SOC SERIES CAMERA SUBSYSTEM DRIVERS
 M:     Kyungmin Park <kyungmin.park@samsung.com>