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Message-ID: <43fec656-8fda-49ad-a117-1ada0c2b7a79@linaro.org>
Date:   Tue, 31 Oct 2023 18:17:01 +0100
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Subject: Re: [RFC PATCH 5/5] arm64: dts: qcom: ipq9574: Add support for SPI
 nand
Content-Language: en-US
To:     Md Sadre Alam <quic_mdalam@quicinc.com>, agross@kernel.org,
        andersson@kernel.org, konrad.dybcio@linaro.org, robh+dt@kernel.org,
        conor+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
        miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com,
        broonie@kernel.org, linux-arm-msm@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-mtd@lists.infradead.org, linux-spi@vger.kernel.org,
        quic_srichara@quicinc.com, qpic_varada@quicinc.com
References: <20231031120307.1600689-1-quic_mdalam@quicinc.com>
 <20231031120307.1600689-6-quic_mdalam@quicinc.com>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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In-Reply-To: <20231031120307.1600689-6-quic_mdalam@quicinc.com>
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Precedence: bulk

On 31/10/2023 13:03, Md Sadre Alam wrote:
> Add support for QPIC SPI NAND for IPQ9574
> 
> Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
> Signed-off-by: Sricharan R <quic_srichara@quicinc.com>
> ---
>  arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts | 56 ++++++++++-----------
>  arch/arm64/boot/dts/qcom/ipq9574.dtsi       | 30 ++++++++++-
>  2 files changed, 57 insertions(+), 29 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts b/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> index 1bb8d96c9a82..5e4200edb873 100644
> --- a/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> +++ b/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> @@ -15,48 +15,48 @@ / {
>  	compatible = "qcom,ipq9574-ap-al02-c7", "qcom,ipq9574";
>  };
>  
> -&sdhc_1 {
> -	pinctrl-0 = <&sdc_default_state>;
> -	pinctrl-names = "default";
> -	mmc-ddr-1_8v;
> -	mmc-hs200-1_8v;
> -	mmc-hs400-1_8v;
> -	mmc-hs400-enhanced-strobe;
> -	max-frequency = <384000000>;
> -	bus-width = <8>;
> -	status = "okay";

Why? This is not explained in commit msg.

> -};
> -
>  &tlmm {
> -	sdc_default_state: sdc-default-state {
> -		clk-pins {
> +	qspi_nand_pins: qspi_nand_pins {
> +		spi_clock {
>  			pins = "gpio5";
> -			function = "sdc_clk";
> +			function = "qspi_clk";

Why?

>  			drive-strength = <8>;
>  			bias-disable;
>  		};
>  
> -		cmd-pins {
> +		qspi_cs {

No, come one. Code was good and you replace it to incorrect one. Please
stop bringing more issues to fix.

>  			pins = "gpio4";
> -			function = "sdc_cmd";
> +			function = "qspi_cs";
>  			drive-strength = <8>;
>  			bias-pull-up;
>  		};
>  

...

> +
>  		bch: qpic_ecc {
>  			compatible = "qcom,ipq9574-ecc";
>  			status = "ok";
> -		}
> +		};

This is the saddest part of the entire patchset...

>  
>  		blsp_dma: dma-controller@7884000 {
>  			compatible = "qcom,bam-v1.7.0";

Best regards,
Krzysztof