Merge tag 'clk-for-linus-3.12' of git://git.linaro.org/people/mturquette/linux

Pull clock framework changes from Michael Turquette:
 "The common clk framework changes for 3.12 are dominated by clock
  driver patches, both new drivers and fixes to existing.  A high
  percentage of these are for Samsung platforms like Exynos.  Core
  framework fixes and some new features like automagical clock
  re-parenting round out the patches"

* tag 'clk-for-linus-3.12' of git://git.linaro.org/people/mturquette/linux: (102 commits)
  clk: only call get_parent if there is one
  clk: samsung: exynos5250: Simplify registration of PLL rate tables
  clk: samsung: exynos4: Register PLL rate tables for Exynos4x12
  clk: samsung: exynos4: Register PLL rate tables for Exynos4210
  clk: samsung: exynos4: Reorder registration of mout_vpllsrc
  clk: samsung: pll: Add support for rate configuration of PLL46xx
  clk: samsung: pll: Use new registration method for PLL46xx
  clk: samsung: pll: Add support for rate configuration of PLL45xx
  clk: samsung: pll: Use new registration method for PLL45xx
  clk: samsung: exynos4: Rename exynos4_plls to exynos4x12_plls
  clk: samsung: exynos4: Remove checks for DT node
  clk: samsung: exynos4: Remove unused static clkdev aliases
  clk: samsung: Modify _get_rate() helper to use __clk_lookup()
  clk: samsung: exynos4: Use separate aliases for cpufreq related clocks
  clocksource: samsung_pwm_timer: Get clock from device tree
  ARM: dts: exynos4: Specify PWM clocks in PWM node
  pwm: samsung: Update DT bindings documentation to cover clocks
  clk: Move symbol export to proper location
  clk: fix new_parent dereference before null check
  clk: wm831x: Initialise wm831x pointer on init
  ...

11 files changed, 414 insertions, 23 deletions

diff --git a/Documentation/clk.txt b/Documentation/clk.txt
index 6f68ba0d1e01..3aeb5c440442 100644
--- a/Documentation/clk.txt
+++ b/Documentation/clk.txt
@@ -70,6 +70,10 @@ the operations defined in clk.h:
 						unsigned long parent_rate);
 		long		(*round_rate)(struct clk_hw *hw, unsigned long,
 						unsigned long *);
+		long		(*determine_rate)(struct clk_hw *hw,
+						unsigned long rate,
+						unsigned long *best_parent_rate,
+						struct clk **best_parent_clk);
 		int		(*set_parent)(struct clk_hw *hw, u8 index);
 		u8		(*get_parent)(struct clk_hw *hw);
 		int		(*set_rate)(struct clk_hw *hw, unsigned long);
@@ -179,26 +183,28 @@ mandatory, a cell marked as "n" implies that either including that
 callback is invalid or otherwise unnecessary.  Empty cells are either
 optional or must be evaluated on a case-by-case basis.
 
-                           clock hardware characteristics
-	     -----------------------------------------------------------
-             | gate | change rate | single parent | multiplexer | root |
-             |------|-------------|---------------|-------------|------|
-.prepare     |      |             |               |             |      |
-.unprepare   |      |             |               |             |      |
-             |      |             |               |             |      |
-.enable      | y    |             |               |             |      |
-.disable     | y    |             |               |             |      |
-.is_enabled  | y    |             |               |             |      |
-             |      |             |               |             |      |
-.recalc_rate |      | y           |               |             |      |
-.round_rate  |      | y           |               |             |      |
-.set_rate    |      | y           |               |             |      |
-             |      |             |               |             |      |
-.set_parent  |      |             | n             | y           | n    |
-.get_parent  |      |             | n             | y           | n    |
-             |      |             |               |             |      |
-.init        |      |             |               |             |      |
-	     -----------------------------------------------------------
+                              clock hardware characteristics
+                -----------------------------------------------------------
+                | gate | change rate | single parent | multiplexer | root |
+                |------|-------------|---------------|-------------|------|
+.prepare        |      |             |               |             |      |
+.unprepare      |      |             |               |             |      |
+                |      |             |               |             |      |
+.enable         | y    |             |               |             |      |
+.disable        | y    |             |               |             |      |
+.is_enabled     | y    |             |               |             |      |
+                |      |             |               |             |      |
+.recalc_rate    |      | y           |               |             |      |
+.round_rate     |      | y [1]       |               |             |      |
+.determine_rate |      | y [1]       |               |             |      |
+.set_rate       |      | y           |               |             |      |
+                |      |             |               |             |      |
+.set_parent     |      |             | n             | y           | n    |
+.get_parent     |      |             | n             | y           | n    |
+                |      |             |               |             |      |
+.init           |      |             |               |             |      |
+                -----------------------------------------------------------
+[1] either one of round_rate or determine_rate is required.
 
 Finally, register your clock at run-time with a hardware-specific
 registration function.  This function simply populates struct clk_foo's
diff --git a/Documentation/devicetree/bindings/clock/exynos4-clock.txt b/Documentation/devicetree/bindings/clock/exynos4-clock.txt
index 14d5c2af26f4..c6bf8a6c8f52 100644
--- a/Documentation/devicetree/bindings/clock/exynos4-clock.txt
+++ b/Documentation/devicetree/bindings/clock/exynos4-clock.txt
@@ -236,6 +236,7 @@ Exynos4 SoC and this is specified where applicable.
   spi0_isp_sclk       380     Exynos4x12
   spi1_isp_sclk       381     Exynos4x12
   uart_isp_sclk       382     Exynos4x12
+  tmu_apbif           383
 
 		[Mux Clocks]
 
diff --git a/Documentation/devicetree/bindings/clock/exynos5250-clock.txt b/Documentation/devicetree/bindings/clock/exynos5250-clock.txt
index 781a6276adf7..24765c146e31 100644
--- a/Documentation/devicetree/bindings/clock/exynos5250-clock.txt
+++ b/Documentation/devicetree/bindings/clock/exynos5250-clock.txt
@@ -59,6 +59,9 @@ clock which they consume.
   sclk_spi0		154
   sclk_spi1		155
   sclk_spi2		156
+  div_i2s1		157
+  div_i2s2		158
+  sclk_hdmiphy		159
 
 
    [Peripheral Clock Gates]
@@ -154,7 +157,16 @@ clock which they consume.
   dsim0			341
   dp			342
   mixer			343
-  hdmi			345
+  hdmi			344
+  g2d			345
+
+
+   [Clock Muxes]
+
+  Clock			ID
+  ----------------------------
+  mout_hdmi		1024
+
 
 Example 1: An example of a clock controller node is listed below.
 
diff --git a/Documentation/devicetree/bindings/clock/exynos5420-clock.txt b/Documentation/devicetree/bindings/clock/exynos5420-clock.txt
index 9bcc4b1bff51..32aa34ecad36 100644
--- a/Documentation/devicetree/bindings/clock/exynos5420-clock.txt
+++ b/Documentation/devicetree/bindings/clock/exynos5420-clock.txt
@@ -59,6 +59,7 @@ clock which they consume.
   sclk_pwm		155
   sclk_gscl_wa		156
   sclk_gscl_wb		157
+  sclk_hdmiphy		158
 
    [Peripheral Clock Gates]
 
@@ -179,6 +180,17 @@ clock which they consume.
   fimc_lite3		495
   aclk_g3d		500
   g3d			501
+  smmu_mixer		502
+
+  Mux			ID
+  ----------------------------
+
+  mout_hdmi		640
+
+  Divider		ID
+  ----------------------------
+
+  dout_pixel		768
 
 Example 1: An example of a clock controller node is listed below.
 
diff --git a/Documentation/devicetree/bindings/clock/samsung,s3c64xx-clock.txt b/Documentation/devicetree/bindings/clock/samsung,s3c64xx-clock.txt
new file mode 100644
index 000000000000..fa171dc4bd3c
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/samsung,s3c64xx-clock.txt
@@ -0,0 +1,77 @@
+* Samsung S3C64xx Clock Controller
+
+The S3C64xx clock controller generates and supplies clock to various controllers
+within the SoC. The clock binding described here is applicable to all SoCs in
+the S3C64xx family.
+
+Required Properties:
+
+- compatible: should be one of the following.
+  - "samsung,s3c6400-clock" - controller compatible with S3C6400 SoC.
+  - "samsung,s3c6410-clock" - controller compatible with S3C6410 SoC.
+
+- reg: physical base address of the controller and length of memory mapped
+  region.
+
+- #clock-cells: should be 1.
+
+Each clock is assigned an identifier and client nodes can use this identifier
+to specify the clock which they consume. Some of the clocks are available only
+on a particular S3C64xx SoC and this is specified where applicable.
+
+All available clocks are defined as preprocessor macros in
+dt-bindings/clock/samsung,s3c64xx-clock.h header and can be used in device
+tree sources.
+
+External clocks:
+
+There are several clocks that are generated outside the SoC. It is expected
+that they are defined using standard clock bindings with following
+clock-output-names:
+ - "fin_pll" - PLL input clock (xtal/extclk) - required,
+ - "xusbxti" - USB xtal - required,
+ - "iiscdclk0" - I2S0 codec clock - optional,
+ - "iiscdclk1" - I2S1 codec clock - optional,
+ - "iiscdclk2" - I2S2 codec clock - optional,
+ - "pcmcdclk0" - PCM0 codec clock - optional,
+ - "pcmcdclk1" - PCM1 codec clock - optional, only S3C6410.
+
+Example: Clock controller node:
+
+	clock: clock-controller@7e00f000 {
+		compatible = "samsung,s3c6410-clock";
+		reg = <0x7e00f000 0x1000>;
+		#clock-cells = <1>;
+	};
+
+Example: Required external clocks:
+
+	fin_pll: clock-fin-pll {
+		compatible = "fixed-clock";
+		clock-output-names = "fin_pll";
+		clock-frequency = <12000000>;
+		#clock-cells = <0>;
+	};
+
+	xusbxti: clock-xusbxti {
+		compatible = "fixed-clock";
+		clock-output-names = "xusbxti";
+		clock-frequency = <48000000>;
+		#clock-cells = <0>;
+	};
+
+Example: UART controller node that consumes the clock generated by the clock
+  controller (refer to the standard clock bindings for information about
+  "clocks" and "clock-names" properties):
+
+		uart0: serial@7f005000 {
+			compatible = "samsung,s3c6400-uart";
+			reg = <0x7f005000 0x100>;
+			interrupt-parent = <&vic1>;
+			interrupts = <5>;
+			clock-names = "uart", "clk_uart_baud2",
+					"clk_uart_baud3";
+			clocks = <&clock PCLK_UART0>, <&clocks PCLK_UART0>,
+					<&clock SCLK_UART>;
+			status = "disabled";
+		};
diff --git a/Documentation/devicetree/bindings/clock/sunxi.txt b/Documentation/devicetree/bindings/clock/sunxi.txt
index d495521a79d2..00a5c26454eb 100644
--- a/Documentation/devicetree/bindings/clock/sunxi.txt
+++ b/Documentation/devicetree/bindings/clock/sunxi.txt
@@ -8,19 +8,31 @@ Required properties:
 - compatible : shall be one of the following:
 	"allwinner,sun4i-osc-clk" - for a gatable oscillator
 	"allwinner,sun4i-pll1-clk" - for the main PLL clock
+	"allwinner,sun6i-a31-pll1-clk" - for the main PLL clock on A31
 	"allwinner,sun4i-cpu-clk" - for the CPU multiplexer clock
 	"allwinner,sun4i-axi-clk" - for the AXI clock
 	"allwinner,sun4i-axi-gates-clk" - for the AXI gates
 	"allwinner,sun4i-ahb-clk" - for the AHB clock
 	"allwinner,sun4i-ahb-gates-clk" - for the AHB gates on A10
 	"allwinner,sun5i-a13-ahb-gates-clk" - for the AHB gates on A13
+	"allwinner,sun5i-a10s-ahb-gates-clk" - for the AHB gates on A10s
+	"allwinner,sun7i-a20-ahb-gates-clk" - for the AHB gates on A20
+	"allwinner,sun6i-a31-ahb1-mux-clk" - for the AHB1 multiplexer on A31
+	"allwinner,sun6i-a31-ahb1-gates-clk" - for the AHB1 gates on A31
 	"allwinner,sun4i-apb0-clk" - for the APB0 clock
 	"allwinner,sun4i-apb0-gates-clk" - for the APB0 gates on A10
 	"allwinner,sun5i-a13-apb0-gates-clk" - for the APB0 gates on A13
+	"allwinner,sun5i-a10s-apb0-gates-clk" - for the APB0 gates on A10s
+	"allwinner,sun7i-a20-apb0-gates-clk" - for the APB0 gates on A20
 	"allwinner,sun4i-apb1-clk" - for the APB1 clock
 	"allwinner,sun4i-apb1-mux-clk" - for the APB1 clock muxing
 	"allwinner,sun4i-apb1-gates-clk" - for the APB1 gates on A10
 	"allwinner,sun5i-a13-apb1-gates-clk" - for the APB1 gates on A13
+	"allwinner,sun5i-a10s-apb1-gates-clk" - for the APB1 gates on A10s
+	"allwinner,sun6i-a31-apb1-gates-clk" - for the APB1 gates on A31
+	"allwinner,sun7i-a20-apb1-gates-clk" - for the APB1 gates on A20
+	"allwinner,sun6i-a31-apb2-div-clk" - for the APB2 gates on A31
+	"allwinner,sun6i-a31-apb2-gates-clk" - for the APB2 gates on A31
 
 Required properties for all clocks:
 - reg : shall be the control register address for the clock.
diff --git a/Documentation/devicetree/bindings/clock/sunxi/sun5i-a10s-gates.txt b/Documentation/devicetree/bindings/clock/sunxi/sun5i-a10s-gates.txt
new file mode 100644
index 000000000000..d24279fe1429
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/sunxi/sun5i-a10s-gates.txt
@@ -0,0 +1,75 @@
+Gate clock outputs
+------------------
+
+  * AXI gates ("allwinner,sun4i-axi-gates-clk")
+
+    DRAM					0
+
+  * AHB gates ("allwinner,sun5i-a10s-ahb-gates-clk")
+
+    USB0					0
+    EHCI0					1
+    OHCI0					2
+
+    SS						5
+    DMA						6
+    BIST					7
+    MMC0					8
+    MMC1					9
+    MMC2					10
+
+    NAND					13
+    SDRAM					14
+
+    EMAC					17
+    TS						18
+
+    SPI0					20
+    SPI1					21
+    SPI2					22
+
+    GPS						26
+
+    HSTIMER					28
+
+    VE						32
+
+    TVE						34
+
+    LCD						36
+
+    CSI						40
+
+    HDMI					43
+    DE_BE					44
+
+    DE_FE					46
+
+    IEP						51
+    MALI400					52
+
+  * APB0 gates ("allwinner,sun5i-a10s-apb0-gates-clk")
+
+    CODEC					0
+
+    IIS						3
+
+    PIO						5
+    IR						6
+
+    KEYPAD					10
+
+  * APB1 gates ("allwinner,sun5i-a10s-apb1-gates-clk")
+
+    I2C0					0
+    I2C1					1
+    I2C2					2
+
+    UART0					16
+    UART1					17
+    UART2					18
+    UART3					19
+
+Notation:
+ [*]:  The datasheet didn't mention these, but they are present on AW code
+ [**]: The datasheet had this marked as "NC" but they are used on AW code
diff --git a/Documentation/devicetree/bindings/clock/sunxi/sun6i-a31-gates.txt b/Documentation/devicetree/bindings/clock/sunxi/sun6i-a31-gates.txt
new file mode 100644
index 000000000000..fe44932b5c6b
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/sunxi/sun6i-a31-gates.txt
@@ -0,0 +1,83 @@
+Gate clock outputs
+------------------
+
+  * AHB1 gates ("allwinner,sun6i-a31-ahb1-gates-clk")
+
+    MIPI DSI					1
+
+    SS						5
+    DMA						6
+
+    MMC0					8
+    MMC1					9
+    MMC2					10
+    MMC3					11
+
+    NAND1					12
+    NAND0					13
+    SDRAM					14
+
+    GMAC					17
+    TS						18
+    HSTIMER					19
+    SPI0					20
+    SPI1					21
+    SPI2					22
+    SPI3					23
+    USB_OTG					24
+
+    EHCI0					26
+    EHCI1					27
+
+    OHCI0					29
+    OHCI1					30
+    OHCI2					31
+    VE						32
+
+    LCD0					36
+    LCD1					37
+
+    CSI						40
+
+    HDMI					43
+    DE_BE0					44
+    DE_BE1					45
+    DE_FE1					46
+    DE_FE1					47
+
+    MP						50
+
+    GPU						52
+
+    DEU0					55
+    DEU1					56
+    DRC0					57
+    DRC1					58
+
+  * APB1 gates ("allwinner,sun6i-a31-apb1-gates-clk")
+
+    CODEC					0
+
+    DIGITAL MIC					4
+    PIO						5
+
+    DAUDIO0					12
+    DAUDIO1					13
+
+  * APB2 gates ("allwinner,sun6i-a31-apb2-gates-clk")
+
+    I2C0					0
+    I2C1					1
+    I2C2					2
+    I2C3					3
+
+    UART0					16
+    UART1					17
+    UART2					18
+    UART3					19
+    UART4					20
+    UART5					21
+
+Notation:
+ [*]:  The datasheet didn't mention these, but they are present on AW code
+ [**]: The datasheet had this marked as "NC" but they are used on AW code
diff --git a/Documentation/devicetree/bindings/clock/sunxi/sun7i-a20-gates.txt b/Documentation/devicetree/bindings/clock/sunxi/sun7i-a20-gates.txt
new file mode 100644
index 000000000000..357f4fdc02ef
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/sunxi/sun7i-a20-gates.txt
@@ -0,0 +1,98 @@
+Gate clock outputs
+------------------
+
+  * AXI gates ("allwinner,sun4i-axi-gates-clk")
+
+    DRAM					0
+
+  * AHB gates ("allwinner,sun7i-a20-ahb-gates-clk")
+
+    USB0					0
+    EHCI0					1
+    OHCI0					2
+    EHCI1					3
+    OHCI1					4
+    SS						5
+    DMA						6
+    BIST					7
+    MMC0					8
+    MMC1					9
+    MMC2					10
+    MMC3					11
+    MS						12
+    NAND					13
+    SDRAM					14
+
+    ACE						16
+    EMAC					17
+    TS						18
+
+    SPI0					20
+    SPI1					21
+    SPI2					22
+    SPI3					23
+
+    SATA					25
+
+    HSTIMER					28
+
+    VE						32
+    TVD						33
+    TVE0					34
+    TVE1					35
+    LCD0					36
+    LCD1					37
+
+    CSI0					40
+    CSI1					41
+
+    HDMI1					42
+    HDMI0					43
+    DE_BE0					44
+    DE_BE1					45
+    DE_FE1					46
+    DE_FE1					47
+
+    GMAC					49
+    MP						50
+
+    MALI400					52
+
+  * APB0 gates ("allwinner,sun7i-a20-apb0-gates-clk")
+
+    CODEC					0
+    SPDIF					1
+    AC97					2
+    IIS0					3
+    IIS1					4
+    PIO						5
+    IR0						6
+    IR1						7
+    IIS2					8
+
+    KEYPAD					10
+
+  * APB1 gates ("allwinner,sun7i-a20-apb1-gates-clk")
+
+    I2C0					0
+    I2C1					1
+    I2C2					2
+    I2C3					3
+    CAN						4
+    SCR						5
+    PS20					6
+    PS21					7
+
+    I2C4					15
+    UART0					16
+    UART1					17
+    UART2					18
+    UART3					19
+    UART4					20
+    UART5					21
+    UART6					22
+    UART7					23
+
+Notation:
+ [*]:  The datasheet didn't mention these, but they are present on AW code
+ [**]: The datasheet had this marked as "NC" but they are used on AW code
diff --git a/Documentation/devicetree/bindings/gpu/samsung-g2d.txt b/Documentation/devicetree/bindings/gpu/samsung-g2d.txt
index 3f454ffc654a..c4f358dafdaa 100644
--- a/Documentation/devicetree/bindings/gpu/samsung-g2d.txt
+++ b/Documentation/devicetree/bindings/gpu/samsung-g2d.txt
@@ -11,8 +11,11 @@ Required properties:
 
   - interrupts : G2D interrupt number to the CPU.
   - clocks : from common clock binding: handle to G2D clocks.
-  - clock-names : from common clock binding: must contain "sclk_fimg2d" and
-		  "fimg2d", corresponding to entries in the clocks property.
+  - clock-names : names of clocks listed in clocks property, in the same
+		  order, depending on SoC type:
+		  - for S5PV210 and Exynos4 based SoCs: "fimg2d" and
+		    "sclk_fimg2d"
+		  - for Exynos5250 SoC: "fimg2d".
 
 Example:
 	g2d@12800000 {
diff --git a/Documentation/devicetree/bindings/pwm/pwm-samsung.txt b/Documentation/devicetree/bindings/pwm/pwm-samsung.txt
index 4caa1a78863e..d61fccd40bad 100644
--- a/Documentation/devicetree/bindings/pwm/pwm-samsung.txt
+++ b/Documentation/devicetree/bindings/pwm/pwm-samsung.txt
@@ -19,6 +19,16 @@ Required properties:
 - reg: base address and size of register area
 - interrupts: list of timer interrupts (one interrupt per timer, starting at
   timer 0)
+- clock-names: should contain all following required clock names:
+    - "timers" - PWM base clock used to generate PWM signals,
+  and any subset of following optional clock names:
+    - "pwm-tclk0" - first external PWM clock source,
+    - "pwm-tclk1" - second external PWM clock source.
+  Note that not all IP variants allow using all external clock sources.
+  Refer to SoC documentation to learn which clock source configurations
+  are available.
+- clocks: should contain clock specifiers of all clocks, which input names
+  have been specified in clock-names property, in same order.
 - #pwm-cells: should be 3. See pwm.txt in this directory for a description of
   the cells format. The only third cell flag supported by this binding is
   PWM_POLARITY_INVERTED.
@@ -34,6 +44,8 @@ Example:
 		reg = <0x7f006000 0x1000>;
 		interrupt-parent = <&vic0>;
 		interrupts = <23>, <24>, <25>, <27>, <28>;
+		clocks = <&clock 67>;
+		clock-names = "timers";
 		samsung,pwm-outputs = <0>, <1>;
 		#pwm-cells = <3>;
 	}