Re: [PATCH 3/5] mtd: rawnand: gpmi: add iMX8QXP support.

From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Frank Li <Frank.Li@nxp.com>
Cc: Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>, Han Xu <han.xu@nxp.com>,
	Vinod Koul <vkoul@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>, Marek Vasut <marex@denx.de>,
	linux-mtd@lists.infradead.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org,
	imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 3/5] mtd: rawnand: gpmi: add iMX8QXP support.
Date: Fri, 17 May 2024 20:39:04 +0200	[thread overview]
Message-ID: <20240517203904.2879419a@xps-13> (raw)
In-Reply-To: <20240517-gpmi_nand-v1-3-73bb8d2cd441@nxp.com>

Hi Frank,

Frank.Li@nxp.com wrote on Fri, 17 May 2024 14:09:50 -0400:

> From: Han Xu <han.xu@nxp.com>
> 
> Add "fsl,imx8qxp-gpmi-nand" compatible string. iMX8QXP gpmi nand is similar
> with iMX7D. But it using 4 clock: "gpmi_io", "gpmi_apb", "gpmi_bch" and

  to?             is         clocks

> "gpmi_bch_apb".
> 
> Signed-off-by: Han Xu <han.xu@nxp.com>
> Signed-off-by: Frank Li <Frank.Li@nxp.com>
> ---
>  drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 20 +++++++++++++++++---
>  drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h |  4 ++++
>  2 files changed, 21 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> index e71ad2fcec232..f90c5207bacb6 100644
> --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> @@ -983,7 +983,8 @@ static int gpmi_setup_interface(struct nand_chip *chip, int chipnr,
>  		return PTR_ERR(sdr);
>  
>  	/* Only MX28/MX6 GPMI controller can reach EDO timings */
> -	if (sdr->tRC_min <= 25000 && !GPMI_IS_MX28(this) && !GPMI_IS_MX6(this))
> +	if (sdr->tRC_min <= 25000 && !GPMI_IS_MX28(this) &&
> +	    !(GPMI_IS_MX6(this) || GPMI_IS_MX8(this)))

Feels completely redundant, no? If it's not an imx6 nor an imx28, it
already returns -ENOTSUPP.

>  		return -ENOTSUPP;

Fine otherwise.

Thanks,
Miquèl

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