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Date:   Tue, 29 Dec 2020 06:26:41 -0600
From:   Adam Ford <aford173@...il.com>
To:     Peng Fan <peng.fan@....com>
Cc:     Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        NXP Linux Team <linux-imx@....com>,
        Sascha Hauer <kernel@...gutronix.de>,
        arm-soc <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 2/4] arm64: dts: imx8mn: add spba bus node

On Tue, Dec 29, 2020 at 6:15 AM <peng.fan@....com> wrote:
>
> From: Peng Fan <peng.fan@....com>
>
> According to RM, there is a spba bus inside aips3 and aips1, add it.
>
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  arch/arm64/boot/dts/freescale/imx8mm.dtsi | 362 +++++++++++-----------
>  1 file changed, 189 insertions(+), 173 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> index c824f2615fe8..91f85b8cee9a 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> @@ -269,117 +269,125 @@ aips1: bus@...00000 {
>                         #size-cells = <1>;
>                         ranges = <0x30000000 0x30000000 0x400000>;
>
> -                       sai1: sai@...10000 {
> -                               #sound-dai-cells = <0>;
> -                               compatible = "fsl,imx8mm-sai", "fsl,imx8mq-sai";
> -                               reg = <0x30010000 0x10000>;
> -                               interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
> -                               clocks = <&clk IMX8MM_CLK_SAI1_IPG>,
> -                                        <&clk IMX8MM_CLK_SAI1_ROOT>,
> -                                        <&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
> -                               clock-names = "bus", "mclk1", "mclk2", "mclk3";
> -                               dmas = <&sdma2 0 2 0>, <&sdma2 1 2 0>;
> -                               dma-names = "rx", "tx";
> -                               status = "disabled";
> -                       };
> +                       bus@...00000 {

There is already a bus@...00000 (aips1), and I think the system
doesn't like it when there are multiple busses with the same name.

There was some discussion on fixing the 8mn [1], but it doesn't look
like it went anywhere.

I am guessing the Mini will need something similar to the nano.

[1] - https://patchwork.kernel.org/project/linux-arm-kernel/patch/1607324004-12960-1-git-send-email-shengjiu.wang@nxp.com/

adam



> +                               compatible = "fsl,spba-bus", "simple-bus";
> +                               #address-cells = <1>;
> +                               #size-cells = <1>;
> +                               reg = <0x30000000 0x100000>;
> +                               ranges;
> +
> +                               sai1: sai@...10000 {
> +                                       #sound-dai-cells = <0>;
> +                                       compatible = "fsl,imx8mm-sai", "fsl,imx8mq-sai";
> +                                       reg = <0x30010000 0x10000>;
> +                                       interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
> +                                       clocks = <&clk IMX8MM_CLK_SAI1_IPG>,
> +                                                <&clk IMX8MM_CLK_SAI1_ROOT>,
> +                                                <&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
> +                                       clock-names = "bus", "mclk1", "mclk2", "mclk3";
> +                                       dmas = <&sdma2 0 2 0>, <&sdma2 1 2 0>;
> +                                       dma-names = "rx", "tx";
> +                                       status = "disabled";
> +                               };
>
> -                       sai2: sai@...20000 {
> -                               #sound-dai-cells = <0>;
> -                               compatible = "fsl,imx8mm-sai", "fsl,imx8mq-sai";
> -                               reg = <0x30020000 0x10000>;
> -                               interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
> -                               clocks = <&clk IMX8MM_CLK_SAI2_IPG>,
> -                                       <&clk IMX8MM_CLK_SAI2_ROOT>,
> -                                       <&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
> -                               clock-names = "bus", "mclk1", "mclk2", "mclk3";
> -                               dmas = <&sdma2 2 2 0>, <&sdma2 3 2 0>;
> -                               dma-names = "rx", "tx";
> -                               status = "disabled";
> -                       };
> +                               sai2: sai@...20000 {
> +                                       #sound-dai-cells = <0>;
> +                                       compatible = "fsl,imx8mm-sai", "fsl,imx8mq-sai";
> +                                       reg = <0x30020000 0x10000>;
> +                                       interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
> +                                       clocks = <&clk IMX8MM_CLK_SAI2_IPG>,
> +                                               <&clk IMX8MM_CLK_SAI2_ROOT>,
> +                                               <&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
> +                                       clock-names = "bus", "mclk1", "mclk2", "mclk3";
> +                                       dmas = <&sdma2 2 2 0>, <&sdma2 3 2 0>;
> +                                       dma-names = "rx", "tx";
> +                                       status = "disabled";
> +                               };
>
> -                       sai3: sai@...30000 {
> -                               #sound-dai-cells = <0>;
> -                               compatible = "fsl,imx8mm-sai", "fsl,imx8mq-sai";
> -                               reg = <0x30030000 0x10000>;
> -                               interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
> -                               clocks = <&clk IMX8MM_CLK_SAI3_IPG>,
> -                                        <&clk IMX8MM_CLK_SAI3_ROOT>,
> -                                        <&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
> -                               clock-names = "bus", "mclk1", "mclk2", "mclk3";
> -                               dmas = <&sdma2 4 2 0>, <&sdma2 5 2 0>;
> -                               dma-names = "rx", "tx";
> -                               status = "disabled";
> -                       };
> +                               sai3: sai@...30000 {
> +                                       #sound-dai-cells = <0>;
> +                                       compatible = "fsl,imx8mm-sai", "fsl,imx8mq-sai";
> +                                       reg = <0x30030000 0x10000>;
> +                                       interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
> +                                       clocks = <&clk IMX8MM_CLK_SAI3_IPG>,
> +                                                <&clk IMX8MM_CLK_SAI3_ROOT>,
> +                                                <&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
> +                                       clock-names = "bus", "mclk1", "mclk2", "mclk3";
> +                                       dmas = <&sdma2 4 2 0>, <&sdma2 5 2 0>;
> +                                       dma-names = "rx", "tx";
> +                                       status = "disabled";
> +                               };
>
> -                       sai5: sai@...50000 {
> -                               #sound-dai-cells = <0>;
> -                               compatible = "fsl,imx8mm-sai", "fsl,imx8mq-sai";
> -                               reg = <0x30050000 0x10000>;
> -                               interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>;
> -                               clocks = <&clk IMX8MM_CLK_SAI5_IPG>,
> -                                        <&clk IMX8MM_CLK_SAI5_ROOT>,
> -                                        <&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
> -                               clock-names = "bus", "mclk1", "mclk2", "mclk3";
> -                               dmas = <&sdma2 8 2 0>, <&sdma2 9 2 0>;
> -                               dma-names = "rx", "tx";
> -                               status = "disabled";
> -                       };
> +                               sai5: sai@...50000 {
> +                                       #sound-dai-cells = <0>;
> +                                       compatible = "fsl,imx8mm-sai", "fsl,imx8mq-sai";
> +                                       reg = <0x30050000 0x10000>;
> +                                       interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>;
> +                                       clocks = <&clk IMX8MM_CLK_SAI5_IPG>,
> +                                                <&clk IMX8MM_CLK_SAI5_ROOT>,
> +                                                <&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
> +                                       clock-names = "bus", "mclk1", "mclk2", "mclk3";
> +                                       dmas = <&sdma2 8 2 0>, <&sdma2 9 2 0>;
> +                                       dma-names = "rx", "tx";
> +                                       status = "disabled";
> +                               };
>
> -                       sai6: sai@...60000 {
> -                               #sound-dai-cells = <0>;
> -                               compatible = "fsl,imx8mm-sai", "fsl,imx8mq-sai";
> -                               reg = <0x30060000 0x10000>;
> -                               interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>;
> -                               clocks = <&clk IMX8MM_CLK_SAI6_IPG>,
> -                                        <&clk IMX8MM_CLK_SAI6_ROOT>,
> -                                        <&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
> -                               clock-names = "bus", "mclk1", "mclk2", "mclk3";
> -                               dmas = <&sdma2 10 2 0>, <&sdma2 11 2 0>;
> -                               dma-names = "rx", "tx";
> -                               status = "disabled";
> -                       };
> +                               sai6: sai@...60000 {
> +                                       #sound-dai-cells = <0>;
> +                                       compatible = "fsl,imx8mm-sai", "fsl,imx8mq-sai";
> +                                       reg = <0x30060000 0x10000>;
> +                                       interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>;
> +                                       clocks = <&clk IMX8MM_CLK_SAI6_IPG>,
> +                                                <&clk IMX8MM_CLK_SAI6_ROOT>,
> +                                                <&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
> +                                       clock-names = "bus", "mclk1", "mclk2", "mclk3";
> +                                       dmas = <&sdma2 10 2 0>, <&sdma2 11 2 0>;
> +                                       dma-names = "rx", "tx";
> +                                       status = "disabled";
> +                               };
>
> -                       micfil: audio-controller@...80000 {
> -                               compatible = "fsl,imx8mm-micfil";
> -                               reg = <0x30080000 0x10000>;
> -                               interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
> -                                            <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>,
> -                                            <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>,
> -                                            <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
> -                               clocks = <&clk IMX8MM_CLK_PDM_IPG>,
> -                                        <&clk IMX8MM_CLK_PDM_ROOT>,
> -                                        <&clk IMX8MM_AUDIO_PLL1_OUT>,
> -                                        <&clk IMX8MM_AUDIO_PLL2_OUT>,
> -                                        <&clk IMX8MM_CLK_EXT3>;
> -                               clock-names = "ipg_clk", "ipg_clk_app",
> -                                             "pll8k", "pll11k", "clkext3";
> -                               dmas = <&sdma2 24 25 0x80000000>;
> -                               dma-names = "rx";
> -                               status = "disabled";
> -                       };
> +                               micfil: audio-controller@...80000 {
> +                                       compatible = "fsl,imx8mm-micfil";
> +                                       reg = <0x30080000 0x10000>;
> +                                       interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
> +                                                    <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>,
> +                                                    <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>,
> +                                                    <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
> +                                       clocks = <&clk IMX8MM_CLK_PDM_IPG>,
> +                                                <&clk IMX8MM_CLK_PDM_ROOT>,
> +                                                <&clk IMX8MM_AUDIO_PLL1_OUT>,
> +                                                <&clk IMX8MM_AUDIO_PLL2_OUT>,
> +                                                <&clk IMX8MM_CLK_EXT3>;
> +                                       clock-names = "ipg_clk", "ipg_clk_app",
> +                                                     "pll8k", "pll11k", "clkext3";
> +                                       dmas = <&sdma2 24 25 0x80000000>;
> +                                       dma-names = "rx";
> +                                       status = "disabled";
> +                               };
>
> -                       spdif1: spdif@...90000 {
> -                               compatible = "fsl,imx35-spdif";
> -                               reg = <0x30090000 0x10000>;
> -                               interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
> -                               clocks = <&clk IMX8MM_CLK_AUDIO_AHB>, /* core */
> -                                        <&clk IMX8MM_CLK_24M>, /* rxtx0 */
> -                                        <&clk IMX8MM_CLK_SPDIF1>, /* rxtx1 */
> -                                        <&clk IMX8MM_CLK_DUMMY>, /* rxtx2 */
> -                                        <&clk IMX8MM_CLK_DUMMY>, /* rxtx3 */
> -                                        <&clk IMX8MM_CLK_DUMMY>, /* rxtx4 */
> -                                        <&clk IMX8MM_CLK_AUDIO_AHB>, /* rxtx5 */
> -                                        <&clk IMX8MM_CLK_DUMMY>, /* rxtx6 */
> -                                        <&clk IMX8MM_CLK_DUMMY>, /* rxtx7 */
> -                                        <&clk IMX8MM_CLK_DUMMY>; /* spba */
> -                               clock-names = "core", "rxtx0",
> -                                             "rxtx1", "rxtx2",
> -                                             "rxtx3", "rxtx4",
> -                                             "rxtx5", "rxtx6",
> -                                             "rxtx7", "spba";
> -                               dmas = <&sdma2 28 18 0>, <&sdma2 29 18 0>;
> -                               dma-names = "rx", "tx";
> -                               status = "disabled";
> +                               spdif1: spdif@...90000 {
> +                                       compatible = "fsl,imx35-spdif";
> +                                       reg = <0x30090000 0x10000>;
> +                                       interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
> +                                       clocks = <&clk IMX8MM_CLK_AUDIO_AHB>, /* core */
> +                                                <&clk IMX8MM_CLK_24M>, /* rxtx0 */
> +                                                <&clk IMX8MM_CLK_SPDIF1>, /* rxtx1 */
> +                                                <&clk IMX8MM_CLK_DUMMY>, /* rxtx2 */
> +                                                <&clk IMX8MM_CLK_DUMMY>, /* rxtx3 */
> +                                                <&clk IMX8MM_CLK_DUMMY>, /* rxtx4 */
> +                                                <&clk IMX8MM_CLK_AUDIO_AHB>, /* rxtx5 */
> +                                                <&clk IMX8MM_CLK_DUMMY>, /* rxtx6 */
> +                                                <&clk IMX8MM_CLK_DUMMY>, /* rxtx7 */
> +                                                <&clk IMX8MM_CLK_DUMMY>; /* spba */
> +                                       clock-names = "core", "rxtx0",
> +                                                     "rxtx1", "rxtx2",
> +                                                     "rxtx3", "rxtx4",
> +                                                     "rxtx5", "rxtx6",
> +                                                     "rxtx7", "spba";
> +                                       dmas = <&sdma2 28 18 0>, <&sdma2 29 18 0>;
> +                                       dma-names = "rx", "tx";
> +                                       status = "disabled";
> +                               };
>                         };
>
>                         gpio1: gpio@...00000 {
> @@ -660,80 +668,88 @@ aips3: bus@...00000 {
>                         ranges = <0x30800000 0x30800000 0x400000>,
>                                  <0x8000000 0x8000000 0x10000000>;
>
> -                       ecspi1: spi@...20000 {
> -                               compatible = "fsl,imx8mm-ecspi", "fsl,imx51-ecspi";
> +                       bus@...00000 {
> +                               compatible = "fsl,spba-bus", "simple-bus";
>                                 #address-cells = <1>;
> -                               #size-cells = <0>;
> -                               reg = <0x30820000 0x10000>;
> -                               interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
> -                               clocks = <&clk IMX8MM_CLK_ECSPI1_ROOT>,
> -                                        <&clk IMX8MM_CLK_ECSPI1_ROOT>;
> -                               clock-names = "ipg", "per";
> -                               dmas = <&sdma1 0 7 1>, <&sdma1 1 7 2>;
> -                               dma-names = "rx", "tx";
> -                               status = "disabled";
> -                       };
> +                               #size-cells = <1>;
> +                               reg = <0x30800000 0x100000>;
> +                               ranges;
> +
> +                               ecspi1: spi@...20000 {
> +                                       compatible = "fsl,imx8mm-ecspi", "fsl,imx51-ecspi";
> +                                       #address-cells = <1>;
> +                                       #size-cells = <0>;
> +                                       reg = <0x30820000 0x10000>;
> +                                       interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
> +                                       clocks = <&clk IMX8MM_CLK_ECSPI1_ROOT>,
> +                                                <&clk IMX8MM_CLK_ECSPI1_ROOT>;
> +                                       clock-names = "ipg", "per";
> +                                       dmas = <&sdma1 0 7 1>, <&sdma1 1 7 2>;
> +                                       dma-names = "rx", "tx";
> +                                       status = "disabled";
> +                               };
>
> -                       ecspi2: spi@...30000 {
> -                               compatible = "fsl,imx8mm-ecspi", "fsl,imx51-ecspi";
> -                               #address-cells = <1>;
> -                               #size-cells = <0>;
> -                               reg = <0x30830000 0x10000>;
> -                               interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
> -                               clocks = <&clk IMX8MM_CLK_ECSPI2_ROOT>,
> -                                        <&clk IMX8MM_CLK_ECSPI2_ROOT>;
> -                               clock-names = "ipg", "per";
> -                               dmas = <&sdma1 2 7 1>, <&sdma1 3 7 2>;
> -                               dma-names = "rx", "tx";
> -                               status = "disabled";
> -                       };
> +                               ecspi2: spi@...30000 {
> +                                       compatible = "fsl,imx8mm-ecspi", "fsl,imx51-ecspi";
> +                                       #address-cells = <1>;
> +                                       #size-cells = <0>;
> +                                       reg = <0x30830000 0x10000>;
> +                                       interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
> +                                       clocks = <&clk IMX8MM_CLK_ECSPI2_ROOT>,
> +                                                <&clk IMX8MM_CLK_ECSPI2_ROOT>;
> +                                       clock-names = "ipg", "per";
> +                                       dmas = <&sdma1 2 7 1>, <&sdma1 3 7 2>;
> +                                       dma-names = "rx", "tx";
> +                                       status = "disabled";
> +                               };
>
> -                       ecspi3: spi@...40000 {
> -                               compatible = "fsl,imx8mm-ecspi", "fsl,imx51-ecspi";
> -                               #address-cells = <1>;
> -                               #size-cells = <0>;
> -                               reg = <0x30840000 0x10000>;
> -                               interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
> -                               clocks = <&clk IMX8MM_CLK_ECSPI3_ROOT>,
> -                                        <&clk IMX8MM_CLK_ECSPI3_ROOT>;
> -                               clock-names = "ipg", "per";
> -                               dmas = <&sdma1 4 7 1>, <&sdma1 5 7 2>;
> -                               dma-names = "rx", "tx";
> -                               status = "disabled";
> -                       };
> +                               ecspi3: spi@...40000 {
> +                                       compatible = "fsl,imx8mm-ecspi", "fsl,imx51-ecspi";
> +                                       #address-cells = <1>;
> +                                       #size-cells = <0>;
> +                                       reg = <0x30840000 0x10000>;
> +                                       interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
> +                                       clocks = <&clk IMX8MM_CLK_ECSPI3_ROOT>,
> +                                                <&clk IMX8MM_CLK_ECSPI3_ROOT>;
> +                                       clock-names = "ipg", "per";
> +                                       dmas = <&sdma1 4 7 1>, <&sdma1 5 7 2>;
> +                                       dma-names = "rx", "tx";
> +                                       status = "disabled";
> +                               };
>
> -                       uart1: serial@...60000 {
> -                               compatible = "fsl,imx8mm-uart", "fsl,imx6q-uart";
> -                               reg = <0x30860000 0x10000>;
> -                               interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
> -                               clocks = <&clk IMX8MM_CLK_UART1_ROOT>,
> -                                        <&clk IMX8MM_CLK_UART1_ROOT>;
> -                               clock-names = "ipg", "per";
> -                               dmas = <&sdma1 22 4 0>, <&sdma1 23 4 0>;
> -                               dma-names = "rx", "tx";
> -                               status = "disabled";
> -                       };
> +                               uart1: serial@...60000 {
> +                                       compatible = "fsl,imx8mm-uart", "fsl,imx6q-uart";
> +                                       reg = <0x30860000 0x10000>;
> +                                       interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
> +                                       clocks = <&clk IMX8MM_CLK_UART1_ROOT>,
> +                                                <&clk IMX8MM_CLK_UART1_ROOT>;
> +                                       clock-names = "ipg", "per";
> +                                       dmas = <&sdma1 22 4 0>, <&sdma1 23 4 0>;
> +                                       dma-names = "rx", "tx";
> +                                       status = "disabled";
> +                               };
>
> -                       uart3: serial@...80000 {
> -                               compatible = "fsl,imx8mm-uart", "fsl,imx6q-uart";
> -                               reg = <0x30880000 0x10000>;
> -                               interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>;
> -                               clocks = <&clk IMX8MM_CLK_UART3_ROOT>,
> -                                        <&clk IMX8MM_CLK_UART3_ROOT>;
> -                               clock-names = "ipg", "per";
> -                               dmas = <&sdma1 26 4 0>, <&sdma1 27 4 0>;
> -                               dma-names = "rx", "tx";
> -                               status = "disabled";
> -                       };
> +                               uart3: serial@...80000 {
> +                                       compatible = "fsl,imx8mm-uart", "fsl,imx6q-uart";
> +                                       reg = <0x30880000 0x10000>;
> +                                       interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>;
> +                                       clocks = <&clk IMX8MM_CLK_UART3_ROOT>,
> +                                                <&clk IMX8MM_CLK_UART3_ROOT>;
> +                                       clock-names = "ipg", "per";
> +                                       dmas = <&sdma1 26 4 0>, <&sdma1 27 4 0>;
> +                                       dma-names = "rx", "tx";
> +                                       status = "disabled";
> +                               };
>
> -                       uart2: serial@...90000 {
> -                               compatible = "fsl,imx8mm-uart", "fsl,imx6q-uart";
> -                               reg = <0x30890000 0x10000>;
> -                               interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>;
> -                               clocks = <&clk IMX8MM_CLK_UART2_ROOT>,
> -                                        <&clk IMX8MM_CLK_UART2_ROOT>;
> -                               clock-names = "ipg", "per";
> -                               status = "disabled";
> +                               uart2: serial@...90000 {
> +                                       compatible = "fsl,imx8mm-uart", "fsl,imx6q-uart";
> +                                       reg = <0x30890000 0x10000>;
> +                                       interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>;
> +                                       clocks = <&clk IMX8MM_CLK_UART2_ROOT>,
> +                                                <&clk IMX8MM_CLK_UART2_ROOT>;
> +                                       clock-names = "ipg", "per";
> +                                       status = "disabled";
> +                               };
>                         };
>
>                         crypto: crypto@...00000 {
> --
> 2.28.0
>
>
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