diff mbox series

[v7,5/5] arm64: dts: imx8m: Add ddr controller nodes

Message ID 23e46c12c98947315229c20dea6784ad40d294c4.1574458460.git.leonard.crestez@nxp.com (mailing list archive)
State New, archived
Headers show
Series PM / devfreq: Add dynamic scaling for imx8m ddr controller | expand

Commit Message

Leonard Crestez Nov. 22, 2019, 9:45 p.m. UTC 
This is used by the imx-ddrc devfreq driver to implement dynamic
frequency scaling of DRAM.

Support for proactive scaling via interconnect will come later. The
high-performance bus masters which need that (display, vpu, gpu) are
mostly not yet enabled in upstream anyway.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
---
 arch/arm64/boot/dts/freescale/imx8mm-evk.dts  | 18 ++++++++++++++
 arch/arm64/boot/dts/freescale/imx8mm.dtsi     | 10 ++++++++
 .../boot/dts/freescale/imx8mn-ddr4-evk.dts    | 18 ++++++++++++++
 arch/arm64/boot/dts/freescale/imx8mn.dtsi     | 10 ++++++++
 arch/arm64/boot/dts/freescale/imx8mq-evk.dts  | 24 +++++++++++++++++++
 arch/arm64/boot/dts/freescale/imx8mq.dtsi     | 10 ++++++++
 6 files changed, 90 insertions(+)

Comments

Adam Ford Nov. 28, 2019, 2:43 p.m. UTC | #1 
On Fri, Nov 22, 2019 at 3:46 PM Leonard Crestez <leonard.crestez@nxp.com> wrote:
>
> This is used by the imx-ddrc devfreq driver to implement dynamic
> frequency scaling of DRAM.
>
> Support for proactive scaling via interconnect will come later. The
> high-performance bus masters which need that (display, vpu, gpu) are
> mostly not yet enabled in upstream anyway.
>
> Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
> ---
>  arch/arm64/boot/dts/freescale/imx8mm-evk.dts  | 18 ++++++++++++++
>  arch/arm64/boot/dts/freescale/imx8mm.dtsi     | 10 ++++++++
>  .../boot/dts/freescale/imx8mn-ddr4-evk.dts    | 18 ++++++++++++++
>  arch/arm64/boot/dts/freescale/imx8mn.dtsi     | 10 ++++++++
>  arch/arm64/boot/dts/freescale/imx8mq-evk.dts  | 24 +++++++++++++++++++
>  arch/arm64/boot/dts/freescale/imx8mq.dtsi     | 10 ++++++++
>  6 files changed, 90 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> index 28ab17a277bb..ecf0d385c164 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> @@ -75,10 +75,28 @@
>
>  &A53_0 {
>         cpu-supply = <&buck2_reg>;
>  };
>
> +&ddrc {
> +       operating-points-v2 = <&ddrc_opp_table>;
> +
> +       ddrc_opp_table: opp-table {
> +               compatible = "operating-points-v2";
> +
> +               opp-25M {
> +                       opp-hz = /bits/ 64 <25000000>;
> +               };
> +               opp-100M {
> +                       opp-hz = /bits/ 64 <100000000>;
> +               };
> +               opp-750M {
> +                       opp-hz = /bits/ 64 <750000000>;
> +               };
> +       };
> +};

The SoC's device tree has the opp for the SoC.  Since the SoC also has
the DDR controller, why not put the opp for the DDR into the SoC's
device tree set for its maximum rates.  If the individual boards need
to change them, they can do it on a case-by-case basis.

As more and more people add devices based on imx8m q/m/n, I can
imaging a lot of these entries will be duplicated if they base their
design on the reference evk for their respective SoC.

> +
>  &fec1 {
>         pinctrl-names = "default";
>         pinctrl-0 = <&pinctrl_fec1>;
>         phy-mode = "rgmii-id";
>         phy-handle = <&ethphy0>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> index 6edbdfe2d0d7..3d4802375715 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> @@ -856,10 +856,20 @@
>                         #interrupt-cells = <3>;
>                         interrupt-controller;
>                         interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
>                 };
>
> +               ddrc: memory-controller@3d400000 {
> +                       compatible = "fsl,imx8mm-ddrc", "fsl,imx8m-ddrc";
> +                       reg = <0x3d400000 0x400000>;
> +                       clock-names = "core", "pll", "alt", "apb";
> +                       clocks = <&clk IMX8MM_CLK_DRAM_CORE>,
> +                                <&clk IMX8MM_DRAM_PLL>,
> +                                <&clk IMX8MM_CLK_DRAM_ALT>,
> +                                <&clk IMX8MM_CLK_DRAM_APB>;
> +               };
> +
>                 ddr-pmu@3d800000 {
>                         compatible = "fsl,imx8mm-ddr-pmu", "fsl,imx8m-ddr-pmu";
>                         reg = <0x3d800000 0x400000>;
>                         interrupt-parent = <&gic>;
>                         interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts b/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts
> index 071949412caf..b051c927c11e 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts
> @@ -15,10 +15,28 @@
>
>  &A53_0 {
>         cpu-supply = <&buck2_reg>;
>  };
>
> +&ddrc {
> +       operating-points-v2 = <&ddrc_opp_table>;
> +
> +       ddrc_opp_table: opp-table {
> +               compatible = "operating-points-v2";
> +
> +               opp-25M {
> +                       opp-hz = /bits/ 64 <25000000>;
> +               };
> +               opp-100M {
> +                       opp-hz = /bits/ 64 <100000000>;
> +               };
> +               opp-600M {
> +                       opp-hz = /bits/ 64 <600000000>;
> +               };
> +       };
> +};
> +
>  &i2c1 {
>         pmic@4b {
>                 compatible = "rohm,bd71847";
>                 reg = <0x4b>;
>                 pinctrl-0 = <&pinctrl_pmic>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
> index e91625063f8e..3a79fdddc72b 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
> @@ -757,10 +757,20 @@
>                         #interrupt-cells = <3>;
>                         interrupt-controller;
>                         interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
>                 };
>
> +               ddrc: memory-controller@3d400000 {
> +                       compatible = "fsl,imx8mn-ddrc", "fsl,imx8m-ddrc";
> +                       reg = <0x3d400000 0x400000>;
> +                       clock-names = "core", "pll", "alt", "apb";
> +                       clocks = <&clk IMX8MN_CLK_DRAM_CORE>,
> +                                <&clk IMX8MN_DRAM_PLL>,
> +                                <&clk IMX8MN_CLK_DRAM_ALT>,
> +                                <&clk IMX8MN_CLK_DRAM_APB>;
> +               };
> +
>                 ddr-pmu@3d800000 {
>                         compatible = "fsl,imx8mn-ddr-pmu", "fsl,imx8m-ddr-pmu";
>                         reg = <0x3d800000 0x400000>;
>                         interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
>                 };
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> index c36685916683..ee6dc5f07622 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> @@ -103,10 +103,34 @@
>
>  &A53_3 {
>         cpu-supply = <&buck2_reg>;
>  };
>
> +&ddrc {
> +       operating-points-v2 = <&ddrc_opp_table>;
> +
> +       ddrc_opp_table: opp-table {
> +               compatible = "operating-points-v2";
> +
> +               opp-25M {
> +                       opp-hz = /bits/ 64 <25000000>;
> +               };
> +               opp-100M {
> +                       opp-hz = /bits/ 64 <100000000>;
> +               };
> +               /*
> +                * On imx8mq B0 PLL can't be bypassed so low bus is 166M
> +                */
> +               opp-166M {
> +                       opp-hz = /bits/ 64 <166935483>;
> +               };
> +               opp-800M {
> +                       opp-hz = /bits/ 64 <800000000>;
> +               };
> +       };
> +};
> +
>  &fec1 {
>         pinctrl-names = "default";
>         pinctrl-0 = <&pinctrl_fec1>;
>         phy-mode = "rgmii-id";
>         phy-handle = <&ethphy0>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> index 7f9319452b58..d1fcf9887f8b 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> @@ -1111,10 +1111,20 @@
>                         interrupt-controller;
>                         interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
>                         interrupt-parent = <&gic>;
>                 };
>
> +               ddrc: memory-controller@3d400000 {
> +                       compatible = "fsl,imx8mq-ddrc", "fsl,imx8m-ddrc";
> +                       reg = <0x3d400000 0x400000>;
> +                       clock-names = "core", "pll", "alt", "apb";
> +                       clocks = <&clk IMX8MQ_CLK_DRAM_CORE>,
> +                                <&clk IMX8MQ_DRAM_PLL_OUT>,
> +                                <&clk IMX8MQ_CLK_DRAM_ALT>,
> +                                <&clk IMX8MQ_CLK_DRAM_APB>;
> +               };
> +
>                 ddr-pmu@3d800000 {
>                         compatible = "fsl,imx8mq-ddr-pmu", "fsl,imx8m-ddr-pmu";
>                         reg = <0x3d800000 0x400000>;
>                         interrupt-parent = <&gic>;
>                         interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
> --
> 2.17.1
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Leonard Crestez Nov. 29, 2019, 5:33 a.m. UTC | #2 
On 2019-11-28 4:43 PM, Adam Ford wrote:
> On Fri, Nov 22, 2019 at 3:46 PM Leonard Crestez <leonard.crestez@nxp.com> wrote:
>>
>> This is used by the imx-ddrc devfreq driver to implement dynamic
>> frequency scaling of DRAM.
>>
>> Support for proactive scaling via interconnect will come later. The
>> high-performance bus masters which need that (display, vpu, gpu) are
>> mostly not yet enabled in upstream anyway.
>>
>> Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
>> ---
>>   arch/arm64/boot/dts/freescale/imx8mm-evk.dts  | 18 ++++++++++++++
>>   arch/arm64/boot/dts/freescale/imx8mm.dtsi     | 10 ++++++++
>>   .../boot/dts/freescale/imx8mn-ddr4-evk.dts    | 18 ++++++++++++++
>>   arch/arm64/boot/dts/freescale/imx8mn.dtsi     | 10 ++++++++
>>   arch/arm64/boot/dts/freescale/imx8mq-evk.dts  | 24 +++++++++++++++++++
>>   arch/arm64/boot/dts/freescale/imx8mq.dtsi     | 10 ++++++++
>>   6 files changed, 90 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
>> index 28ab17a277bb..ecf0d385c164 100644
>> --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
>> +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
>> @@ -75,10 +75,28 @@
>>
>>   &A53_0 {
>>          cpu-supply = <&buck2_reg>;
>>   };
>>
>> +&ddrc {
>> +       operating-points-v2 = <&ddrc_opp_table>;
>> +
>> +       ddrc_opp_table: opp-table {
>> +               compatible = "operating-points-v2";
>> +
>> +               opp-25M {
>> +                       opp-hz = /bits/ 64 <25000000>;
>> +               };
>> +               opp-100M {
>> +                       opp-hz = /bits/ 64 <100000000>;
>> +               };
>> +               opp-750M {
>> +                       opp-hz = /bits/ 64 <750000000>;
>> +               };
>> +       };
>> +};
> 
> The SoC's device tree has the opp for the SoC.  Since the SoC also has
> the DDR controller, why not put the opp for the DDR into the SoC's
> device tree set for its maximum rates.  If the individual boards need
> to change them, they can do it on a case-by-case basis.
> 
> As more and more people add devices based on imx8m q/m/n, I can
> imaging a lot of these entries will be duplicated if they base their
> design on the reference evk for their respective SoC.

The OPPs can vary from board to board for the same SoC. For example ddr4 
and lpddr4 variants of the NXP evk boards have different setpoints.

If a default set was included in soc dtsi then some boards would end up 
having to use /delete-node/ and I wanted to avoid that. Last I check 
that feature wasn't even officially documented for dtc?

Perhaps this could be revisited if it ends up being duplicated on many 
boards.

--
Regards,
Leonard
Shawn Guo Dec. 9, 2019, 1:34 a.m. UTC | #3 
On Fri, Nov 22, 2019 at 11:45:04PM +0200, Leonard Crestez wrote:
> This is used by the imx-ddrc devfreq driver to implement dynamic
> frequency scaling of DRAM.
> 
> Support for proactive scaling via interconnect will come later. The
> high-performance bus masters which need that (display, vpu, gpu) are
> mostly not yet enabled in upstream anyway.
> 
> Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
> ---
>  arch/arm64/boot/dts/freescale/imx8mm-evk.dts  | 18 ++++++++++++++
>  arch/arm64/boot/dts/freescale/imx8mm.dtsi     | 10 ++++++++
>  .../boot/dts/freescale/imx8mn-ddr4-evk.dts    | 18 ++++++++++++++
>  arch/arm64/boot/dts/freescale/imx8mn.dtsi     | 10 ++++++++
>  arch/arm64/boot/dts/freescale/imx8mq-evk.dts  | 24 +++++++++++++++++++
>  arch/arm64/boot/dts/freescale/imx8mq.dtsi     | 10 ++++++++
>  6 files changed, 90 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> index 28ab17a277bb..ecf0d385c164 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> @@ -75,10 +75,28 @@
>  
>  &A53_0 {
>  	cpu-supply = <&buck2_reg>;
>  };
>  
> +&ddrc {
> +	operating-points-v2 = <&ddrc_opp_table>;
> +
> +	ddrc_opp_table: opp-table {
> +		compatible = "operating-points-v2";
> +
> +		opp-25M {
> +			opp-hz = /bits/ 64 <25000000>;
> +		};

As an idiomatic practice, we have newline between nodes.

I fixed it up and applied the patch.

Shawn

> +		opp-100M {
> +			opp-hz = /bits/ 64 <100000000>;
> +		};
> +		opp-750M {
> +			opp-hz = /bits/ 64 <750000000>;
> +		};
> +	};
> +};
> +
>  &fec1 {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&pinctrl_fec1>;
>  	phy-mode = "rgmii-id";
>  	phy-handle = <&ethphy0>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> index 6edbdfe2d0d7..3d4802375715 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> @@ -856,10 +856,20 @@
>  			#interrupt-cells = <3>;
>  			interrupt-controller;
>  			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
>  		};
>  
> +		ddrc: memory-controller@3d400000 {
> +			compatible = "fsl,imx8mm-ddrc", "fsl,imx8m-ddrc";
> +			reg = <0x3d400000 0x400000>;
> +			clock-names = "core", "pll", "alt", "apb";
> +			clocks = <&clk IMX8MM_CLK_DRAM_CORE>,
> +				 <&clk IMX8MM_DRAM_PLL>,
> +				 <&clk IMX8MM_CLK_DRAM_ALT>,
> +				 <&clk IMX8MM_CLK_DRAM_APB>;
> +		};
> +
>  		ddr-pmu@3d800000 {
>  			compatible = "fsl,imx8mm-ddr-pmu", "fsl,imx8m-ddr-pmu";
>  			reg = <0x3d800000 0x400000>;
>  			interrupt-parent = <&gic>;
>  			interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts b/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts
> index 071949412caf..b051c927c11e 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts
> @@ -15,10 +15,28 @@
>  
>  &A53_0 {
>  	cpu-supply = <&buck2_reg>;
>  };
>  
> +&ddrc {
> +	operating-points-v2 = <&ddrc_opp_table>;
> +
> +	ddrc_opp_table: opp-table {
> +		compatible = "operating-points-v2";
> +
> +		opp-25M {
> +			opp-hz = /bits/ 64 <25000000>;
> +		};
> +		opp-100M {
> +			opp-hz = /bits/ 64 <100000000>;
> +		};
> +		opp-600M {
> +			opp-hz = /bits/ 64 <600000000>;
> +		};
> +	};
> +};
> +
>  &i2c1 {
>  	pmic@4b {
>  		compatible = "rohm,bd71847";
>  		reg = <0x4b>;
>  		pinctrl-0 = <&pinctrl_pmic>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
> index e91625063f8e..3a79fdddc72b 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
> @@ -757,10 +757,20 @@
>  			#interrupt-cells = <3>;
>  			interrupt-controller;
>  			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
>  		};
>  
> +		ddrc: memory-controller@3d400000 {
> +			compatible = "fsl,imx8mn-ddrc", "fsl,imx8m-ddrc";
> +			reg = <0x3d400000 0x400000>;
> +			clock-names = "core", "pll", "alt", "apb";
> +			clocks = <&clk IMX8MN_CLK_DRAM_CORE>,
> +				 <&clk IMX8MN_DRAM_PLL>,
> +				 <&clk IMX8MN_CLK_DRAM_ALT>,
> +				 <&clk IMX8MN_CLK_DRAM_APB>;
> +		};
> +
>  		ddr-pmu@3d800000 {
>  			compatible = "fsl,imx8mn-ddr-pmu", "fsl,imx8m-ddr-pmu";
>  			reg = <0x3d800000 0x400000>;
>  			interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
>  		};
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> index c36685916683..ee6dc5f07622 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> @@ -103,10 +103,34 @@
>  
>  &A53_3 {
>  	cpu-supply = <&buck2_reg>;
>  };
>  
> +&ddrc {
> +	operating-points-v2 = <&ddrc_opp_table>;
> +
> +	ddrc_opp_table: opp-table {
> +		compatible = "operating-points-v2";
> +
> +		opp-25M {
> +			opp-hz = /bits/ 64 <25000000>;
> +		};
> +		opp-100M {
> +			opp-hz = /bits/ 64 <100000000>;
> +		};
> +		/*
> +		 * On imx8mq B0 PLL can't be bypassed so low bus is 166M
> +		 */
> +		opp-166M {
> +			opp-hz = /bits/ 64 <166935483>;
> +		};
> +		opp-800M {
> +			opp-hz = /bits/ 64 <800000000>;
> +		};
> +	};
> +};
> +
>  &fec1 {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&pinctrl_fec1>;
>  	phy-mode = "rgmii-id";
>  	phy-handle = <&ethphy0>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> index 7f9319452b58..d1fcf9887f8b 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> @@ -1111,10 +1111,20 @@
>  			interrupt-controller;
>  			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
>  			interrupt-parent = <&gic>;
>  		};
>  
> +		ddrc: memory-controller@3d400000 {
> +			compatible = "fsl,imx8mq-ddrc", "fsl,imx8m-ddrc";
> +			reg = <0x3d400000 0x400000>;
> +			clock-names = "core", "pll", "alt", "apb";
> +			clocks = <&clk IMX8MQ_CLK_DRAM_CORE>,
> +				 <&clk IMX8MQ_DRAM_PLL_OUT>,
> +				 <&clk IMX8MQ_CLK_DRAM_ALT>,
> +				 <&clk IMX8MQ_CLK_DRAM_APB>;
> +		};
> +
>  		ddr-pmu@3d800000 {
>  			compatible = "fsl,imx8mq-ddr-pmu", "fsl,imx8m-ddr-pmu";
>  			reg = <0x3d800000 0x400000>;
>  			interrupt-parent = <&gic>;
>  			interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
> -- 
> 2.17.1
>
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
index 28ab17a277bb..ecf0d385c164 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
@@ -75,10 +75,28 @@ 
 
 &A53_0 {
 	cpu-supply = <&buck2_reg>;
 };
 
+&ddrc {
+	operating-points-v2 = <&ddrc_opp_table>;
+
+	ddrc_opp_table: opp-table {
+		compatible = "operating-points-v2";
+
+		opp-25M {
+			opp-hz = /bits/ 64 <25000000>;
+		};
+		opp-100M {
+			opp-hz = /bits/ 64 <100000000>;
+		};
+		opp-750M {
+			opp-hz = /bits/ 64 <750000000>;
+		};
+	};
+};
+
 &fec1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_fec1>;
 	phy-mode = "rgmii-id";
 	phy-handle = <&ethphy0>;
diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index 6edbdfe2d0d7..3d4802375715 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -856,10 +856,20 @@ 
 			#interrupt-cells = <3>;
 			interrupt-controller;
 			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
+		ddrc: memory-controller@3d400000 {
+			compatible = "fsl,imx8mm-ddrc", "fsl,imx8m-ddrc";
+			reg = <0x3d400000 0x400000>;
+			clock-names = "core", "pll", "alt", "apb";
+			clocks = <&clk IMX8MM_CLK_DRAM_CORE>,
+				 <&clk IMX8MM_DRAM_PLL>,
+				 <&clk IMX8MM_CLK_DRAM_ALT>,
+				 <&clk IMX8MM_CLK_DRAM_APB>;
+		};
+
 		ddr-pmu@3d800000 {
 			compatible = "fsl,imx8mm-ddr-pmu", "fsl,imx8m-ddr-pmu";
 			reg = <0x3d800000 0x400000>;
 			interrupt-parent = <&gic>;
 			interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts b/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts
index 071949412caf..b051c927c11e 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts
@@ -15,10 +15,28 @@ 
 
 &A53_0 {
 	cpu-supply = <&buck2_reg>;
 };
 
+&ddrc {
+	operating-points-v2 = <&ddrc_opp_table>;
+
+	ddrc_opp_table: opp-table {
+		compatible = "operating-points-v2";
+
+		opp-25M {
+			opp-hz = /bits/ 64 <25000000>;
+		};
+		opp-100M {
+			opp-hz = /bits/ 64 <100000000>;
+		};
+		opp-600M {
+			opp-hz = /bits/ 64 <600000000>;
+		};
+	};
+};
+
 &i2c1 {
 	pmic@4b {
 		compatible = "rohm,bd71847";
 		reg = <0x4b>;
 		pinctrl-0 = <&pinctrl_pmic>;
diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
index e91625063f8e..3a79fdddc72b 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
@@ -757,10 +757,20 @@ 
 			#interrupt-cells = <3>;
 			interrupt-controller;
 			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
+		ddrc: memory-controller@3d400000 {
+			compatible = "fsl,imx8mn-ddrc", "fsl,imx8m-ddrc";
+			reg = <0x3d400000 0x400000>;
+			clock-names = "core", "pll", "alt", "apb";
+			clocks = <&clk IMX8MN_CLK_DRAM_CORE>,
+				 <&clk IMX8MN_DRAM_PLL>,
+				 <&clk IMX8MN_CLK_DRAM_ALT>,
+				 <&clk IMX8MN_CLK_DRAM_APB>;
+		};
+
 		ddr-pmu@3d800000 {
 			compatible = "fsl,imx8mn-ddr-pmu", "fsl,imx8m-ddr-pmu";
 			reg = <0x3d800000 0x400000>;
 			interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
 		};
diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
index c36685916683..ee6dc5f07622 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
@@ -103,10 +103,34 @@ 
 
 &A53_3 {
 	cpu-supply = <&buck2_reg>;
 };
 
+&ddrc {
+	operating-points-v2 = <&ddrc_opp_table>;
+
+	ddrc_opp_table: opp-table {
+		compatible = "operating-points-v2";
+
+		opp-25M {
+			opp-hz = /bits/ 64 <25000000>;
+		};
+		opp-100M {
+			opp-hz = /bits/ 64 <100000000>;
+		};
+		/*
+		 * On imx8mq B0 PLL can't be bypassed so low bus is 166M
+		 */
+		opp-166M {
+			opp-hz = /bits/ 64 <166935483>;
+		};
+		opp-800M {
+			opp-hz = /bits/ 64 <800000000>;
+		};
+	};
+};
+
 &fec1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_fec1>;
 	phy-mode = "rgmii-id";
 	phy-handle = <&ethphy0>;
diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
index 7f9319452b58..d1fcf9887f8b 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
@@ -1111,10 +1111,20 @@ 
 			interrupt-controller;
 			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
 			interrupt-parent = <&gic>;
 		};
 
+		ddrc: memory-controller@3d400000 {
+			compatible = "fsl,imx8mq-ddrc", "fsl,imx8m-ddrc";
+			reg = <0x3d400000 0x400000>;
+			clock-names = "core", "pll", "alt", "apb";
+			clocks = <&clk IMX8MQ_CLK_DRAM_CORE>,
+				 <&clk IMX8MQ_DRAM_PLL_OUT>,
+				 <&clk IMX8MQ_CLK_DRAM_ALT>,
+				 <&clk IMX8MQ_CLK_DRAM_APB>;
+		};
+
 		ddr-pmu@3d800000 {
 			compatible = "fsl,imx8mq-ddr-pmu", "fsl,imx8m-ddr-pmu";
 			reg = <0x3d800000 0x400000>;
 			interrupt-parent = <&gic>;
 			interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;