Subject: Re: [PATCH 1/1] arm64: dts: tqma8mqml: add PCIe support

From: Shawn Guo <[email-masked]>
Date: Wed, 26 Jan 2022 20:56:51 +0800

On Fri, Dec 17, 2021 at 11:22:07AM +0100, Alexander Stein wrote:
> Add PCIe support to TQMa8MxML series.
> 
> Signed-off-by: Alexander Stein <[email-masked]>

It doesn't apply to my imx/dt64 branch.  Could you rebase?

Shawn

> ---
> This goes on top of the series recently applied to pci/dwc [1]:
> [PATCH v7 0/8] Add the imx8m pcie phy driver and imx8mm pcie support
> [1] https://patchwork.kernel.org/project/linux-pci/list/?series=589031&state=*
> 
>  .../dts/freescale/imx8mm-tqma8mqml-mba8mx.dts | 19 +++++++++++++++++++
>  .../boot/dts/freescale/imx8mm-tqma8mqml.dtsi  |  5 +++++
>  arch/arm64/boot/dts/freescale/mba8mx.dtsi     |  6 ++++++
>  3 files changed, 30 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml-mba8mx.dts b/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml-mba8mx.dts
> index 7844878788f4..286d2df01cfa 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml-mba8mx.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml-mba8mx.dts
> @@ -5,6 +5,7 @@
>  
>  /dts-v1/;
>  
> +#include <dt-bindings/phy/phy-imx8-pcie.h>
>  #include "imx8mm-tqma8mqml.dtsi"
>  #include "mba8mx.dtsi"
>  
> @@ -58,6 +59,24 @@ expander2: gpio@27 {
>  	};
>  };
>  
> +&pcie_phy {
> +	clocks = <&pcie0_refclk>;
> +	status = "okay";
> +};
> +
> +&pcie0 {
> +	reset-gpio = <&expander0 14 GPIO_ACTIVE_LOW>;
> +	clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&clk IMX8MM_CLK_PCIE1_AUX>,
> +		<&pcie0_refclk>;
> +	clock-names = "pcie", "pcie_aux", "pcie_bus";
> +	assigned-clocks = <&clk IMX8MM_CLK_PCIE1_AUX>,
> +				<&clk IMX8MM_CLK_PCIE1_CTRL>;
> +	assigned-clock-rates = <10000000>, <250000000>;
> +	assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_50M>,
> +				<&clk IMX8MM_SYS_PLL2_250M>;
> +	status = "okay";
> +};
> +
>  &sai3 {
>  	assigned-clocks = <&clk IMX8MM_CLK_SAI3>;
>  	assigned-clock-parents = <&clk IMX8MM_AUDIO_PLL1_OUT>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi
> index 284e62acc0b4..16ee9b5179e6 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi
> @@ -227,6 +227,11 @@ eeprom0: eeprom@57 {
>  	};
>  };
>  
> +&pcie_phy {
> +	fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>;
> +	fsl,clkreq-unsupported;
> +};
> +
>  &usdhc3 {
>  	pinctrl-names = "default", "state_100mhz", "state_200mhz";
>  	pinctrl-0 = <&pinctrl_usdhc3>;
> diff --git a/arch/arm64/boot/dts/freescale/mba8mx.dtsi b/arch/arm64/boot/dts/freescale/mba8mx.dtsi
> index e694dacb16af..42e12c190e9e 100644
> --- a/arch/arm64/boot/dts/freescale/mba8mx.dtsi
> +++ b/arch/arm64/boot/dts/freescale/mba8mx.dtsi
> @@ -87,6 +87,12 @@ panel_in_lvds0: endpoint {
>  		};
>  	};
>  
> +	pcie0_refclk: pcie0-refclk {
> +		compatible = "fixed-clock";
> +		#clock-cells = <0>;
> +		clock-frequency = <100000000>;
> +	};
> +
>  	reg_12v: regulator-12v {
>  		compatible = "regulator-fixed";
>  		regulator-name = "MBA8MX_12V";
> -- 
> 2.25.1
> 

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