[PATCH 2/3] arm: dts: mt2701: Add display bls related nodes for MT2701

[Erin Lo]

From: YT Shen <yt.s...@mediatek.com>

This patch adds the device node of display backlight for MT2701

Signed-off-by: Weiqing Kong <weiqing.k...@mediatek.com>
Signed-off-by: Erin Lo <erin...@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 a483798..e49c2b7 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 = <&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>;
+       };
+};
+
+&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>;
+               };
+       };
 };
 
 &auxadc {
diff --git a/arch/arm/boot/dts/mt2701.dtsi b/arch/arm/boot/dts/mt2701.dtsi
index de88bd7..4f110d5 100644
--- a/arch/arm/boot/dts/mt2701.dtsi
+++ b/arch/arm/boot/dts/mt2701.dtsi
@@ -366,6 +366,15 @@
                #clock-cells = <1>;
        };
 
+       bls: bls@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";
+       };
+
        larb0: larb@14010000 {
                compatible = "mediatek,mt2701-smi-larb";
                reg = <0 0x14010000 0 0x1000>;
-- 
1.9.1