This patch adds pwm support to arch-vt8500 board files, and adds
the use-case of pwm-backlight.
Signed-off-by: Tony Prisk <li...@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@d8220000 {
+ #pwm-cells = <2>;
+ compatible = "via,vt8500-pwm";
+ reg = <0xd8220000 0x100>;
+ clocks = <&clkpwm>;
+ };
+
timer@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@d8220000 {
+ #pwm-cells = <2>;
+ compatible = "via,vt8500-pwm";
+ reg = <0xd8220000 0x100>;
+ clocks = <&clkpwm>;
+ };
+
timer@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@d8220000 {
+ #pwm-cells = <2>;
+ compatible = "via,vt8500-pwm";
+ reg = <0xd8220000 0x100>;
+ clocks = <&clkpwm>;
+ };
+
timer@d8130100 {
compatible = "via,vt8500-timer";
reg = <0xd8130100 0x28>;
--
1.7.9.5
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