2023-01-11 19:32:14

by Matti Lehtimäki

Subject: [PATCH v2] ARM: dts: qcom: apq8026-samsung-matisse-wifi: Add display backlight

Uses ti,lp8556 backlight with clk-pwm.

Signed-off-by: Matti Lehtimäki <[email protected]>
---
This patch was part of the series
https://lore.kernel.org/linux-arm-msm/[email protected]/
which already had the other patches applied.

Changes in v2:
- Add empty line between subnodes
- Move pwm node to correct place
- Reorder pinctrl properties
---
.../dts/qcom-apq8026-samsung-matisse-wifi.dts | 61 +++++++++++++++++++
1 file changed, 61 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts b/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
index 15b9590ba07b..91b860e24681 100644
--- a/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
+++ b/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
@@ -80,6 +80,55 @@ key-volume-up {
};
};

+ i2c-backlight {
+ compatible = "i2c-gpio";
+ sda-gpios = <&tlmm 20 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+ scl-gpios = <&tlmm 21 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+
+ pinctrl-0 = <&backlight_i2c_default_state>;
+ pinctrl-names = "default";
+
+ i2c-gpio,delay-us = <4>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ backlight@2c {
+ compatible = "ti,lp8556";
+ reg = <0x2c>;
+
+ dev-ctrl = /bits/ 8 <0x80>;
+ init-brt = /bits/ 8 <0x3f>;
+ pwm-period = <100000>;
+
+ pwms = <&backlight_pwm 0 100000>;
+ pwm-names = "lp8556";
+
+ rom-a0h {
+ rom-addr = /bits/ 8 <0xa0>;
+ rom-val = /bits/ 8 <0x44>;
+ };
+
+ rom-a1h {
+ rom-addr = /bits/ 8 <0xa1>;
+ rom-val = /bits/ 8 <0x6c>;
+ };
+
+ rom-a5h {
+ rom-addr = /bits/ 8 <0xa5>;
+ rom-val = /bits/ 8 <0x24>;
+ };
+ };
+ };
+
+ backlight_pwm: pwm {
+ compatible = "clk-pwm";
+ #pwm-cells = <2>;
+ clocks = <&mmcc CAMSS_GP0_CLK>;
+ pinctrl-0 = <&backlight_pwm_default_state>;
+ pinctrl-names = "default";
+ };
+
reg_tsp_1p8v: regulator-tsp-1p8v {
compatible = "regulator-fixed";
regulator-name = "tsp_1p8v";
@@ -418,6 +467,18 @@ accel_int_default_state: accel-int-default-state {
bias-disable;
};

+ backlight_i2c_default_state: backlight-i2c-default-state {
+ pins = "gpio20", "gpio21";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ };
+
+ backlight_pwm_default_state: backlight-pwm-default-state {
+ pins = "gpio33";
+ function = "gp0_clk";
+ };
+
muic_int_default_state: muic-int-default-state {
pins = "gpio67";
function = "gpio";
--
2.34.1

2023-01-11 20:31:49

by Bjorn Andersson

Subject: Re: [PATCH v2] ARM: dts: qcom: apq8026-samsung-matisse-wifi: Add display backlight

On Wed, 11 Jan 2023 20:35:01 +0200, Matti Lehtimäki wrote:
> Uses ti,lp8556 backlight with clk-pwm.
>
>

Applied, thanks!

[1/1] ARM: dts: qcom: apq8026-samsung-matisse-wifi: Add display backlight
commit: 5fec7cb2e3e1d469312b2870e5545a5468a10f6b

Best regards,
--
Bjorn Andersson <[email protected]>