Merge tag 'pwm/for-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm updates from Thierry Reding:
 "This contains a couple of fixes and cleanups for the Meson and
  ACPI/LPSS drivers as well as capture support for STM32.

  Note that given the cross- subsystem changes, the STM32 patches were
  merged through the MFD and PWM trees, both sharing an immutable
  branch"

* tag 'pwm/for-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  pwm: stm32: Fix build warning with CONFIG_DMA_ENGINE disabled
  pwm: stm32: Enforce dependency on CONFIG_MFD_STM32_TIMERS
  ACPI / LPSS: Add missing prv_offset setting for byt/cht PWM devices
  pwm: lpss: platform: Save/restore the ctrl register over a suspend/resume
  dt-bindings: mfd: stm32-timers: Add support for dmas
  pwm: simplify getting .drvdata
  pwm: meson: Fix allocation of PWM channel array

Documentation/devicetree/bindings/mfd/stm32-timers.txt

@@ -19,6 +19,11 @@ Required parameters:
 Optional parameters:
 - resets:		Phandle to the parent reset controller.
 			See ../reset/st,stm32-rcc.txt
+- dmas:			List of phandle to dma channels that can be used for
+			this timer instance. There may be up to 7 dma channels.
+- dma-names:		List of dma names. Must match 'dmas' property. Valid
+			names are: "ch1", "ch2", "ch3", "ch4", "up", "trig",
+			"com".
 
 Optional subnodes:
 - pwm:			See ../pwm/pwm-stm32.txt
@@ -44,3 +49,18 @@ Example:
 			reg = <0>;
 		};
 	};
+
+Example with all dmas:
+	timer@40010000 {
+		...
+		dmas = <&dmamux1 11 0x400 0x0>,
+		       <&dmamux1 12 0x400 0x0>,
+		       <&dmamux1 13 0x400 0x0>,
+		       <&dmamux1 14 0x400 0x0>,
+		       <&dmamux1 15 0x400 0x0>,
+		       <&dmamux1 16 0x400 0x0>,
+		       <&dmamux1 17 0x400 0x0>;
+		dma-names = "ch1", "ch2", "ch3", "ch4", "up", "trig", "com";
+		...
+		child nodes...
+	};