[PATCH 1/3] ARM: dts: Update board files for pwm support

[Tony Prisk]

This patch adds pwm support to arch-vt8500 board files, and adds
the use-case of pwm-backlight.

Signed-off-by: Tony Prisk <linux at prisktech.co.nz>
---
 arch/arm/boot/dts/vt8500-bv07.dts |    8 ++++++++
 arch/arm/boot/dts/vt8500.dtsi     |   29 +++++++++++++++++++++++++++++
 arch/arm/boot/dts/wm8505-ref.dts  |    8 ++++++++
 arch/arm/boot/dts/wm8505.dtsi     |   29 +++++++++++++++++++++++++++++
 arch/arm/boot/dts/wm8650-mid.dts  |    8 ++++++++
 arch/arm/boot/dts/wm8650.dtsi     |   17 +++++++++++++----
 6 files changed, 95 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/vt8500-bv07.dts b/arch/arm/boot/dts/vt8500-bv07.dts
index 567cf4e..3cba367 100644
--- a/arch/arm/boot/dts/vt8500-bv07.dts
+++ b/arch/arm/boot/dts/vt8500-bv07.dts
@@ -33,4 +33,12 @@
 			};
 		};
 	};
+
+	backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm 0 50000>;
+
+		brightness-levels = <0 4 8 16 32 64 128 255>;
+		default-brightness-level = <5>;
+	};
 };
diff --git a/arch/arm/boot/dts/vt8500.dtsi b/arch/arm/boot/dts/vt8500.dtsi
index d8645e9..e196b2e 100644
--- a/arch/arm/boot/dts/vt8500.dtsi
+++ b/arch/arm/boot/dts/vt8500.dtsi
@@ -40,14 +40,43 @@
 				#address-cells = <1>;
 				#size-cells = <0>;
 
+				ref25: ref25M {
+					#clock-cells = <0>;
+					compatible = "fixed-clock";
+					clock-frequency = <25000000>;
+				};
+
 				ref24: ref24M {
 					#clock-cells = <0>;
 					compatible = "fixed-clock";
 					clock-frequency = <24000000>;
 				};
+
+				pllb: pllb {
+					#clock-cells = <0>;
+					compatible = "via,vt8500-pll-clock";
+					clocks = <&ref25>;
+					reg = <0x204>;
+				};
+
+				clkpwm: pwm {
+					#clock-cells = <0>;
+					compatible = "via,vt8500-device-clock";
+					clocks = <&pllb>;
+					divisor-reg = <0x348>;
+					enable-reg = <0x250>;
+					enable-bit = <14>;
+				};
 			};
 		};
 
+		pwm: pwm at d8220000 {
+			#pwm-cells = <2>;
+			compatible = "via,vt8500-pwm";
+			reg = <0xd8220000 0x100>;
+			clocks = <&clkpwm>;
+		};
+
 		timer at d8130100 {
 			compatible = "via,vt8500-timer";
 			reg = <0xd8130100 0x28>;
diff --git a/arch/arm/boot/dts/wm8505-ref.dts b/arch/arm/boot/dts/wm8505-ref.dts
index fd4e248..f51c0ed 100644
--- a/arch/arm/boot/dts/wm8505-ref.dts
+++ b/arch/arm/boot/dts/wm8505-ref.dts
@@ -33,4 +33,12 @@
 			};
 		};
 	};
+
+	backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm 0 50000>;
+
+		brightness-levels = <0 4 8 16 32 64 128 255>;
+		default-brightness-level = <5>;
+	};
 };
diff --git a/arch/arm/boot/dts/wm8505.dtsi b/arch/arm/boot/dts/wm8505.dtsi
index b459691..83c8ec5 100644
--- a/arch/arm/boot/dts/wm8505.dtsi
+++ b/arch/arm/boot/dts/wm8505.dtsi
@@ -54,14 +54,43 @@
 				#address-cells = <1>;
 				#size-cells = <0>;
 
+				ref25: ref25M {
+					#clock-cells = <0>;
+					compatible = "fixed-clock";
+					clock-frequency = <25000000>;
+				};
+
 				ref24: ref24M {
 					#clock-cells = <0>;
 					compatible = "fixed-clock";
 					clock-frequency = <24000000>;
 				};
+
+				pllb: pllb {
+					#clock-cells = <0>;
+					compatible = "via,vt8500-pll-clock";
+					clocks = <&ref25>;
+					reg = <0x204>;
+				};
+
+				clkpwm: pwm {
+					#clock-cells = <0>;
+					compatible = "via,vt8500-device-clock";
+					clocks = <&pllb>;
+					divisor-reg = <0x348>;
+					enable-reg = <0x250>;
+					enable-bit = <10>;
+				};
 			};
 		};
 
+		pwm: pwm at d8220000 {
+			#pwm-cells = <2>;
+			compatible = "via,vt8500-pwm";
+			reg = <0xd8220000 0x100>;
+			clocks = <&clkpwm>;
+		};
+
 		timer at d8130100 {
 			compatible = "via,vt8500-timer";
 			reg = <0xd8130100 0x28>;
diff --git a/arch/arm/boot/dts/wm8650-mid.dts b/arch/arm/boot/dts/wm8650-mid.dts
index cefd938..7a05dd5 100644
--- a/arch/arm/boot/dts/wm8650-mid.dts
+++ b/arch/arm/boot/dts/wm8650-mid.dts
@@ -33,4 +33,12 @@
 			};
 		};
 	};
+
+	backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm 0 50000>;
+
+		brightness-levels = <0 4 8 16 32 64 128 255>;
+		default-brightness-level = <5>;
+	};
 };
diff --git a/arch/arm/boot/dts/wm8650.dtsi b/arch/arm/boot/dts/wm8650.dtsi
index 83b9467..a25d240 100644
--- a/arch/arm/boot/dts/wm8650.dtsi
+++ b/arch/arm/boot/dts/wm8650.dtsi
@@ -75,14 +75,16 @@
 					reg = <0x204>;
 				};
 
-				arm: arm {
+				clkpwm: pwm {
 					#clock-cells = <0>;
 					compatible = "via,vt8500-device-clock";
-					clocks = <&plla>;
-					divisor-reg = <0x300>;
+					clocks = <&pllb>;
+					divisor-reg = <0x348>;
+					enable-reg = <0x250>;
+					enable-bit = <10>;
 				};
 
-				sdhc: sdhc {
+				clksdhc: sdhc {
 					#clock-cells = <0>;
 					compatible = "via,vt8500-device-clock";
 					clocks = <&pllb>;
@@ -94,6 +96,13 @@
 			};
 		};
 
+		pwm: pwm at d8220000 {
+			#pwm-cells = <2>;
+			compatible = "via,vt8500-pwm";
+			reg = <0xd8220000 0x100>;
+			clocks = <&clkpwm>;
+		};
+
 		timer at d8130100 {
 			compatible = "via,vt8500-timer";
 			reg = <0xd8130100 0x28>;
-- 
1.7.9.5