Re: [PATCH 2/3] mtd: rawnand: stm32_fmc2: add STM32 FMC2 NAND flash controller driver

[Boris Brezillon]

Hi Christophe,

On Mon, 17 Sep 2018 17:47:39 +0200
<christophe.kerello@xxxxxx> wrote:

> +struct stm32_fmc2 {
> +	struct nand_chip chip;
> +	struct device *dev;
> +	void __iomem *io_base;
> +	void __iomem *data_base[FMC2_MAX_CE];
> +	void __iomem *cmd_base[FMC2_MAX_CE];
> +	void __iomem *addr_base[FMC2_MAX_CE];
> +	phys_addr_t io_phys_addr;
> +	phys_addr_t data_phys_addr[FMC2_MAX_CE];
> +	struct clk *clk;
> +
> +	struct dma_chan *dma_tx_ch;
> +	struct dma_chan *dma_rx_ch;
> +	struct dma_chan *dma_ecc_ch;
> +	struct sg_table dma_data_sg;
> +	struct sg_table dma_ecc_sg;
> +	u8 *ecc_buf;
> +	int dma_ecc_len;
> +
> +	struct completion complete;
> +	struct completion dma_data_complete;
> +	struct completion dma_ecc_complete;
> +
> +	struct stm32_fmc2_timings timings;
> +	u8 cs_assigned;
> +	int cs_sel;
> +	int ncs;
> +	int cs_used[FMC2_MAX_CE];
> +};

Can we have a clear separation between the NAND controller and NAND
chip structures. I know you only support a single chip per-controller
right now, but I prefer to have things clearly separated from the
beginning. 

Regards,

Boris