Hello Aisheng,
I tried to add lvds pwm to imx8qm.dtsi to get backlight working. But without
success. I'am running into this issue:
[ 0.858737] lcd0-pwm0: failed to power up resource 188 ret -22
Can you review and comment please?
This patch is based on your patch series.
Best regards,
Oliver
---
arch/arm64/boot/dts/freescale/imx8qm.dtsi | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8qm.dtsi b/arch/arm64/boot/dts/freescale/imx8qm.dtsi
index fd0e706ea011..cf9aea4b26f4 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qm.dtsi
@@ -137,6 +137,22 @@ hsio: hsio@5f080000 {
reg = <0x0 0x5f080000 0x0 0xF0000>; /* lpcg, csr, msic, gpio */
};
+
+ lvds1_pwm: pwm@57244000 {
+ compatible = "fsl,imx8qm-pwm", "fsl,imx27-pwm";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x57244000 0x1000>;
+ clocks = <&pwm0_lpcg IMX_LPCG_CLK_4>,
+ <&pwm0_lpcg IMX_LPCG_CLK_0>;
+ clock-names = "ipg", "per";
+ assigned-clocks = <&clk IMX_SC_R_PWM_0 IMX_SC_PM_CLK_PER>;
+ assigned-clock-rates = <24000000>;
+ #pwm-cells = <2>;
+ power-domains = <&pd IMX_SC_R_LVDS_1_PWM_0>;
+ status = "disabled";
+ };
+
pmu {
compatible = "arm,armv8-pmuv3";
interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
--
2.26.0
