linux-kernel - Re: [PATCH v2 2/3] mtd: spi-nor: Altera ASMI Parallel II IP Core

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Date:   Tue, 10 Oct 2017 11:24:03 +0200
From:   Marek Vasut <marek.vasut@...il.com>
To:     matthew.gerlach@...ux.intel.com, vndao@...era.com,
        dwmw2@...radead.org, computersforpeace@...il.com,
        boris.brezillon@...e-electrons.com, richard@....at,
        cyrille.pitchen@...ev4u.fr, robh+dt@...nel.org,
        mark.rutland@....com, linux-mtd@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        gregkh@...uxfoundation.org, davem@...emloft.net,
        mchehab@...nel.org, linux-fpga@...r.kernel.org,
        tien.hock.loh@...el.com, hean.loong.ong@...el.com
Subject: Re: [PATCH v2 2/3] mtd: spi-nor: Altera ASMI Parallel II IP Core

On 09/20/2017 08:28 PM, matthew.gerlach@...ux.intel.com wrote:
> From: Matthew Gerlach <matthew.gerlach@...ux.intel.com>
> 
> This patch adds support for a spi-nor, platform driver for the
> Altera ASMI Parallel II IP Core.  The intended use case is to be able
> to update the flash used to load a FPGA at power up with mtd-utils.
> 
> Signed-off-by: Matthew Gerlach <matthew.gerlach@...ux.intel.com>
> ---
> v2:
>     minor checkpatch fixing by Wu Hao <hao.wu@...el.com>
>     Use read_dummy value as suggested by Cyrille Pitchen.
>     Don't assume 4 byte addressing (Cryille Pichecn and Marek Vasut).
>     Fixed #define indenting as suggested by Marek Vasut.
>     Added units to timer values as suggested by Marek Vasut.
>     Use io(read|write)8_rep() as suggested by Marek Vasut.
>     Renamed function prefixed with __ as suggested by Marek Vasut.

[...]

> +#define QSPI_ACTION_REG			0
> +#define QSPI_ACTION_RST			BIT(0)
> +#define QSPI_ACTION_EN			BIT(1)
> +#define QSPI_ACTION_SC			BIT(2)
> +#define QSPI_ACTION_CHIP_SEL_SFT	4
> +#define QSPI_ACTION_DUMMY_SFT		8
> +#define QSPI_ACTION_READ_BACK_SFT	16
> +
> +#define QSPI_FIFO_CNT_REG		4
> +#define QSPI_FIFO_DEPTH			0x200
> +#define QSPI_FIFO_CNT_MSK		0x3ff
> +#define QSPI_FIFO_CNT_RX_SFT		0
> +#define QSPI_FIFO_CNT_TX_SFT		12
> +
> +#define QSPI_DATA_REG			0x8
> +
> +#define QSPI_POLL_TIMEOUT_US		10000000

10 s poll timeout ? :)

> +#define QSPI_POLL_INTERVAL_US		5
> +
> +struct altera_asmip2 {

[...]

Otherwise looks good

-- 
Best regards,
Marek Vasut