[PATCH V2 3/3] dts: Add disp bls dtsi and dts config for MT2701

[Weiqing Kong]

Add disp_bls node in dtsi for CCF, add backlight_lcd
in dts for backlight subsystem driver, and init pwm gpio mode.

Signed-off-by: Weiqing Kong <weiqing.k...@mediatek.com>
---
 arch/arm/boot/dts/mt2701-evb.dts | 29 +++++++++++++++++++++++++++++
 arch/arm/boot/dts/mt2701.dtsi    |  9 +++++++++
 2 files changed, 38 insertions(+)

diff --git a/arch/arm/boot/dts/mt2701-evb.dts b/arch/arm/boot/dts/mt2701-evb.dts
index 082ca88..6d572f4 100644
--- a/arch/arm/boot/dts/mt2701-evb.dts
+++ b/arch/arm/boot/dts/mt2701-evb.dts
@@ -22,6 +22,35 @@
        memory {
                reg = <0 0x80000000 0 0x40000000>;
        };
+
+       backlight_lcd: backlight_lcd {
+               compatible = "pwm-backlight";
+               pwms = <&disp_bls 0 100000>;
+               brightness-levels = <
+                         0  16  32  48  64  80  96 112
+                       128 144 160 176 192 208 224 240
+                       255
+               >;
+               default-brightness-level = <9>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&pwm_bls_gpio>;
+       };
+};
+
+&disp_bls {
+       status = "okay";
+};
+
+&mmsys {
+       status = "okay";
+};
+
+&pio {
+       pwm_bls_gpio: pwm_bls_gpio {
+               pins_cmd_dat {
+                       pinmux = <MT2701_PIN_208_AUD_EXT_CK1__FUNC_DISP_PWM>;
+               };
+       };
 };
 
 &uart0 {
diff --git a/arch/arm/boot/dts/mt2701.dtsi b/arch/arm/boot/dts/mt2701.dtsi
index 42d5a37..49b8767 100644
--- a/arch/arm/boot/dts/mt2701.dtsi
+++ b/arch/arm/boot/dts/mt2701.dtsi
@@ -234,6 +234,15 @@
                status = "disabled";
        };
 
+       disp_bls: dispsys@1400a000 {
+               compatible = "mediatek,mt2701-disp-pwm";
+               reg = <0 0x1400a000 0 0x1000>;
+               #pwm-cells = <2>;
+               clocks = <&mmsys CLK_MM_MDP_BLS_26M>, <&mmsys CLK_MM_DISP_BLS>;
+               clock-names = "main", "mm";
+               status = "disabled";
+       };
+
        imgsys: syscon@15000000 {
                compatible = "mediatek,mt2701-imgsys", "syscon";
                reg = <0 0x15000000 0 0x1000>;
-- 
1.8.1.1.dirty