linux-kernel - Re: [PATCH v4 2/8] arm64: dts: imx8qm: add lvds subsystem

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Date: Tue, 2 Jul 2024 00:22:37 -0400
From: Frank Li <Frank.li@....com>
To: Shawn Guo <shawnguo2@...h.net>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Dong Aisheng <aisheng.dong@....com>, devicetree@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 2/8] arm64: dts: imx8qm: add lvds subsystem

On Tue, Jul 02, 2024 at 12:10:58PM +0800, Shawn Guo wrote:
> On Mon, Jul 01, 2024 at 11:03:28AM -0400, Frank Li wrote:
> > Add irqsteer, pwm and i2c in lvds subsystem.
> > 
> > Signed-off-by: Frank Li <Frank.Li@....com>
> > ---
> >  arch/arm64/boot/dts/freescale/imx8qm-ss-lvds.dtsi | 77 +++++++++++++++++++++++
> >  arch/arm64/boot/dts/freescale/imx8qm.dtsi         | 10 +++
> >  2 files changed, 87 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/freescale/imx8qm-ss-lvds.dtsi b/arch/arm64/boot/dts/freescale/imx8qm-ss-lvds.dtsi
> > new file mode 100644
> > index 0000000000000..1da3934847057
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/freescale/imx8qm-ss-lvds.dtsi
> > @@ -0,0 +1,77 @@
> > +// SPDX-License-Identifier: GPL-2.0+
> > +
> > +/*
> > + * Copyright 2024 NXP
> > + */
> > +
> > +&qm_lvds0_lis_lpcg {
> > +	clocks = <&lvds_ipg_clk>;
> > +	clock-indices = <IMX_LPCG_CLK_4>;
> > +};
> > +
> > +&qm_lvds0_pwm_lpcg {
> > +	clocks = <&clk IMX_SC_R_LVDS_0_PWM_0 IMX_SC_PM_CLK_PER>,
> > +		 <&lvds_ipg_clk>;
> > +	clock-indices = <IMX_LPCG_CLK_0>, <IMX_LPCG_CLK_4>;
> > +};
> > +
> > +&qm_lvds0_i2c0_lpcg {
> > +	clocks = <&clk IMX_SC_R_LVDS_0_I2C_0 IMX_SC_PM_CLK_PER>,
> > +		 <&lvds_ipg_clk>;
> > +	clock-indices = <IMX_LPCG_CLK_0>, <IMX_LPCG_CLK_4>;
> > +};
> > +
> > +&qm_pwm_lvds0 {
> > +	clocks = <&qm_lvds0_pwm_lpcg IMX_LPCG_CLK_4>,
> > +		 <&qm_lvds0_pwm_lpcg IMX_LPCG_CLK_0>;
> > +};
> > +
> > +&qm_i2c0_lvds0 {
> > +	clocks = <&qm_lvds0_i2c0_lpcg IMX_LPCG_CLK_0>,
> > +		 <&qm_lvds0_i2c0_lpcg IMX_LPCG_CLK_4>;
> > +};
> > +
> > +&lvds0_subsys {
> > +	interrupt-parent = <&irqsteer_lvds0>;
> > +
> > +	irqsteer_lvds0: interrupt-controller@...40000 {
> > +		compatible = "fsl,imx8qm-irqsteer", "fsl,imx-irqsteer";
> 
> Is compatible "fsl,imx8qm-irqsteer" documented in bindings?

In rob' tree

https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git/commit/?h=dt/next&id=285c645d842c5a15d3be2d653faaa5f68d81be1f

Frank
> 
> Shawn
> 
> > +		reg = <0x56240000 0x1000>;
> > +		interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
> > +		interrupt-controller;
> > +		interrupt-parent = <&gic>;
> > +		#interrupt-cells = <1>;
> > +		clocks = <&qm_lvds0_lis_lpcg IMX_LPCG_CLK_4>;
> > +		clock-names = "ipg";
> > +		power-domains = <&pd IMX_SC_R_LVDS_0>;
> > +
> > +		fsl,channel = <0>;
> > +		fsl,num-irqs = <32>;
> > +	};
> > +
> > +	lvds0_i2c1_lpcg: clock-controller@...43014 {
> > +		compatible = "fsl,imx8qxp-lpcg";
> > +		reg = <0x56243014 0x4>;
> > +		#clock-cells = <1>;
> > +		clocks = <&clk IMX_SC_R_LVDS_0_I2C_0 IMX_SC_PM_CLK_PER>,
> > +			 <&lvds_ipg_clk>;
> > +		clock-indices = <IMX_LPCG_CLK_0>, <IMX_LPCG_CLK_4>;
> > +		clock-output-names = "lvds0_i2c1_lpcg_clk",
> > +				     "lvds0_i2c1_lpcg_ipg_clk";
> > +		power-domains = <&pd IMX_SC_R_LVDS_0_I2C_0>;
> > +	};
> > +
> > +	i2c1_lvds0: i2c@...47000 {
> > +		compatible = "fsl,imx8qm-lpi2c", "fsl,imx7ulp-lpi2c";
> > +		reg = <0x56247000 0x1000>;
> > +		interrupts = <9>;
> > +		clocks = <&lvds0_i2c1_lpcg IMX_LPCG_CLK_0>,
> > +			 <&lvds0_i2c1_lpcg IMX_LPCG_CLK_4>;
> > +		clock-names = "per", "ipg";
> > +		assigned-clocks = <&clk IMX_SC_R_LVDS_0_I2C_0 IMX_SC_PM_CLK_PER>;
> > +		assigned-clock-rates = <24000000>;
> > +		power-domains = <&pd IMX_SC_R_LVDS_0_I2C_0>;
> > +		status = "disabled";
> > +	};
> > +};
> > +
> > diff --git a/arch/arm64/boot/dts/freescale/imx8qm.dtsi b/arch/arm64/boot/dts/freescale/imx8qm.dtsi
> > index 61986e0639e53..1e8511e8d8577 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8qm.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8qm.dtsi
> > @@ -560,11 +560,20 @@ clk_spdif1_rx: clock-spdif1-rx {
> >  		clock-output-names = "spdif1_rx";
> >  	};
> >  
> > +	lvds_ipg_clk: clock-controller-lvds-ipg {
> > +		compatible = "fixed-clock";
> > +		#clock-cells = <0>;
> > +		clock-frequency = <24000000>;
> > +		clock-output-names = "lvds0_ipg_clk";
> > +	};
> > +
> >  	/* sorted in register address */
> >  	#include "imx8-ss-cm41.dtsi"
> >  	#include "imx8-ss-audio.dtsi"
> >  	#include "imx8-ss-vpu.dtsi"
> >  	#include "imx8-ss-gpu0.dtsi"
> > +	#include "imx8-ss-lvds0.dtsi"
> > +	#include "imx8-ss-lvds1.dtsi"
> >  	#include "imx8-ss-img.dtsi"
> >  	#include "imx8-ss-dma.dtsi"
> >  	#include "imx8-ss-conn.dtsi"
> > @@ -576,3 +585,4 @@ clk_spdif1_rx: clock-spdif1-rx {
> >  #include "imx8qm-ss-conn.dtsi"
> >  #include "imx8qm-ss-lsio.dtsi"
> >  #include "imx8qm-ss-audio.dtsi"
> > +#include "imx8qm-ss-lvds.dtsi"
> > 
> > -- 
> > 2.34.1
> > 
>