linux-kernel - Re: [PATCH v3 2/3] arm64: dts: marvell: Add NAND flash controller to AC5

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Date:   Thu, 13 Jul 2023 10:59:52 +0200
From:   Gregory CLEMENT <gregory.clement@...tlin.com>
To:     Chris Packham <chris.packham@...iedtelesis.co.nz>,
        miquel.raynal@...tlin.com, richard@....at, vigneshr@...com,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org
Cc:     linux-mtd@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Chris Packham <chris.packham@...iedtelesis.co.nz>
Subject: Re: [PATCH v3 2/3] arm64: dts: marvell: Add NAND flash controller
 to AC5

Chris Packham <chris.packham@...iedtelesis.co.nz> writes:

> The AC5/AC5X SoC has a NAND flash controller (NFC). Add this to
> the base SoC dtsi file as a disabled node. The NFC integration
> on the AC5/AC5X only supports SDR timing modes up to 3 so requires a
> dedicated compatible property so this limitation can be enforced.
>
> Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>

Now that binding and code has beeen applied I can apply this one on
mvebu/dt64

Thanks,

Gregory

> ---
>
> Notes:
>     Changes in v3:
>     - Use correct clock for NFC
>     Changes in v2:
>     - New.
>
>  arch/arm64/boot/dts/marvell/ac5-98dx25xx.dtsi | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/marvell/ac5-98dx25xx.dtsi b/arch/arm64/boot/dts/marvell/ac5-98dx25xx.dtsi
> index c9ce1010c415..c64aaf51deb8 100644
> --- a/arch/arm64/boot/dts/marvell/ac5-98dx25xx.dtsi
> +++ b/arch/arm64/boot/dts/marvell/ac5-98dx25xx.dtsi
> @@ -297,6 +297,16 @@ spi1: spi@...a8000 {
>  			status = "disabled";
>  		};
>  
> +		nand: nand-controller@...b0000 {
> +			compatible = "marvell,ac5-nand-controller";
> +			reg =  <0x0 0x805b0000 0x0 0x00000054>;
> +			#address-cells = <0x1>;
> +			#size-cells = <0x0>;
> +			interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&nand_clock>;
> +			status = "disabled";
> +		};
> +
>  		gic: interrupt-controller@...00000 {
>  			compatible = "arm,gic-v3";
>  			#interrupt-cells = <3>;
> @@ -319,5 +329,11 @@ spi_clock: spi-clock {
>  			#clock-cells = <0>;
>  			clock-frequency = <200000000>;
>  		};
> +
> +		nand_clock: nand-clock {
> +			compatible = "fixed-clock";
> +			#clock-cells = <0>;
> +			clock-frequency = <400000000>;
> +		};
>  	};
>  };
> -- 
> 2.41.0
>

-- 
Gregory Clement, Bootlin
Embedded Linux and Kernel engineering
http://bootlin.com