linux-kernel - Re: [PATCH 1/2] arm64: dts: mt7622: declare SPI-NAND present on BPI-R64

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Message-ID: <64b7c2ed-ccbe-8313-8a46-1adf57deb0df@gmail.com>
Date:   Mon, 29 May 2023 16:23:14 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Daniel Golle <daniel@...rotopia.org>, devicetree@...r.kernel.org,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH 1/2] arm64: dts: mt7622: declare SPI-NAND present on
 BPI-R64



On 19/04/2023 21:15, Daniel Golle wrote:
> The SPI-NOR node in the device tree of the BananaPi R64 has most likely
> been copied from the reference board's device tree even though the R64
> comes with an SPI-NAND chip rather than SPI-NOR.
> 
> Setup the Serial NAND Flash Interface (SNFI) controller, enable
> hardware BCH error detection and correction engine and add the SPI-NAND
> chip including basic partitions,
> 
> Signed-off-by: Daniel Golle <daniel@...rotopia.org>

Applied, thanks

> ---
>   .../dts/mediatek/mt7622-bananapi-bpi-r64.dts  | 39 ++++++++++++++++---
>   1 file changed, 34 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> index af3fe61e40938..d583e816684cf 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> @@ -248,14 +248,42 @@ &nandc {
>   	status = "disabled";
>   };
>   
> -&nor_flash {
> -	pinctrl-names = "default";
> -	pinctrl-0 = <&spi_nor_pins>;
> -	status = "disabled";
> +&bch {
> +	status = "okay";
> +};
>   
> +&snfi {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&serial_nand_pins>;
> +	status = "okay";
>   	flash@0 {
> -		compatible = "jedec,spi-nor";
> +		compatible = "spi-nand";
>   		reg = <0>;
> +		spi-tx-bus-width = <4>;
> +		spi-rx-bus-width = <4>;
> +		nand-ecc-engine = <&snfi>;
> +		partitions {
> +			compatible = "fixed-partitions";
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +
> +			partition@0 {
> +				label = "bl2";
> +				reg = <0x0 0x80000>;
> +				read-only;
> +			};
> +
> +			partition@...00 {
> +				label = "fip";
> +				reg = <0x80000 0x200000>;
> +				read-only;
> +			};
> +
> +			ubi: partition@...000 {
> +				label = "ubi";
> +				reg = <0x280000 0x7d80000>;
> +			};
> +		};
>   	};
>   };
>   
> 
> base-commit: 13961ef828cbc254cc272221b7fc54851caa39a7