linux-kernel - Re: [PATCH] ARM: dts: imx7ulp: add crypto support

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Date:   Wed, 12 Jun 2019 18:39:27 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Horia Geantă <horia.geanta@....com>
Cc:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Aymen Sghaier <aymen.sghaier@....com>,
        Iuliana Prodan <iuliana.prodan@....com>,
        Franck Lenormand <franck.lenormand@....com>,
        linux-crypto@...r.kernel.org,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: dts: imx7ulp: add crypto support

On Thu, Jun 06, 2019 at 11:02:55AM +0300, Horia Geantă wrote:
> From: Iuliana Prodan <iuliana.prodan@....com>
> 
> Add crypto node in device tree for CAAM support.
> 
> Noteworthy is that on 7ulp the interrupt line is shared
> between the two job rings.
> 
> Signed-off-by: Iuliana Prodan <iuliana.prodan@....com>
> Signed-off-by: Franck LENORMAND <franck.lenormand@....com>
> Signed-off-by: Horia Geantă <horia.geanta@....com>
> ---
> 
> I've just realized that this patch should be merged through the crypto tree,
> else bisectability could be affected due to cryptodev-2.6
> commit 385cfc84a5a8 ("crypto: caam - disable some clock checks for iMX7ULP")
> ( https://patchwork.kernel.org/patch/10970017/ )
> which should come first.

I'm not sure I follow it.  This is a new device added to imx7ulp DT.
It's never worked before on imx7ulp.  How would it affect git bisect?

Shawn

> 
>  arch/arm/boot/dts/imx7ulp.dtsi | 23 +++++++++++++++++++++++
>  1 file changed, 23 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/imx7ulp.dtsi b/arch/arm/boot/dts/imx7ulp.dtsi
> index d6b711011cba..e20483714be5 100644
> --- a/arch/arm/boot/dts/imx7ulp.dtsi
> +++ b/arch/arm/boot/dts/imx7ulp.dtsi
> @@ -100,6 +100,29 @@
>  		reg = <0x40000000 0x800000>;
>  		ranges;
>  
> +		crypto: crypto@...40000 {
> +			compatible = "fsl,sec-v4.0";
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			reg = <0x40240000 0x10000>;
> +			ranges = <0 0x40240000 0x10000>;
> +			clocks = <&pcc2 IMX7ULP_CLK_CAAM>,
> +				 <&scg1 IMX7ULP_CLK_NIC1_BUS_DIV>;
> +			clock-names = "aclk", "ipg";
> +
> +			sec_jr0: jr0@...0 {
> +				compatible = "fsl,sec-v4.0-job-ring";
> +				reg = <0x1000 0x1000>;
> +				interrupts = <GIC_SPI 54 IRQ_TYPE_LEVEL_HIGH>;
> +			};
> +
> +			sec_jr1: jr1@...0 {
> +				compatible = "fsl,sec-v4.0-job-ring";
> +				reg = <0x2000 0x1000>;
> +				interrupts = <GIC_SPI 54 IRQ_TYPE_LEVEL_HIGH>;
> +			};
> +		};
> +
>  		lpuart4: serial@...d0000 {
>  			compatible = "fsl,imx7ulp-lpuart";
>  			reg = <0x402d0000 0x1000>;
> -- 
> 2.17.1
>