[U-Boot] [PATCH v2 5/9] spi: Add support for SPL_OF_PLATDATA to mxs_spi.c driver

[Peng Fan]

> Subject: [PATCH v2 5/9] spi: Add support for SPL_OF_PLATDATA to mxs_spi.c
> driver
> 
> After this patch the mxs_spi.c DM/DTS driver can be used at early SPL to read
> payload from SPI-NOR memories.
> 
> It was necessary to adjust its name to 'fsl_imx_2{38}_spi' to match
> requirements for SPL_OF_PLATDATA usage.
> 
> Signed-off-by: Lukasz Majewski <lukma at denx.de>
> ---
> 
> Changes in v2: None
> 
>  drivers/spi/mxs_spi.c | 34 ++++++++++++++++++++++++++++++++--
>  1 file changed, 32 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/spi/mxs_spi.c b/drivers/spi/mxs_spi.c index
> d475830f17..58b1c67a19 100644
> --- a/drivers/spi/mxs_spi.c
> +++ b/drivers/spi/mxs_spi.c
> @@ -57,7 +57,18 @@ static inline struct mxs_spi_slave *to_mxs_slave(struct
> spi_slave *slave)  #else  #include <dm.h>  #include <errno.h>
> +#include <dt-structs.h>
> +
> +#ifdef CONFIG_MX28
> +#define dtd_fsl_imx_spi dtd_fsl_imx28_spi #else /* CONFIG_MX23 */
> +#define dtd_fsl_imx_spi dtd_fsl_imx23_spi #endif
> +
>  struct mxs_spi_platdata {
> +#if CONFIG_IS_ENABLED(OF_PLATDATA)
> +	struct dtd_fsl_imx_spi dtplat;
> +#endif
>  	s32 frequency;		/* Default clock frequency, -1 for none */
>  	fdt_addr_t base;        /* SPI IP block base address */
>  	int num_cs;             /* Number of CSes supported */
> @@ -430,11 +441,26 @@ static int mxs_spi_probe(struct udevice *bus)
>  	int ret;
> 
>  	debug("%s: probe\n", __func__);
> +
> +#if CONFIG_IS_ENABLED(OF_PLATDATA)
> +	struct dtd_fsl_imx_spi *dtplat = &plat->dtplat;
> +	struct phandle_1_arg *p1a = &dtplat->clocks[0];
> +
> +	priv->regs = (struct mxs_ssp_regs *)dtplat->reg[0];
> +	priv->dma_channel = dtplat->dmas[1];
> +	priv->clk_id = p1a->arg[0];
> +	priv->max_freq = dtplat->spi_max_frequency;
> +	plat->num_cs = dtplat->num_cs;
> +
> +	debug("OF_PLATDATA: regs: 0x%x max freq: %d clkid: %d\n",
> +	      (unsigned int)priv->regs, priv->max_freq, priv->clk_id); #else
>  	priv->regs = (struct mxs_ssp_regs *)plat->base;
>  	priv->max_freq = plat->frequency;
> 
>  	priv->dma_channel = plat->dma_id;
>  	priv->clk_id = plat->clk_id;
> +#endif
> 
>  	mxs_reset_block(&priv->regs->hw_ssp_ctrl0_reg);
> 
> @@ -571,16 +597,20 @@ static int mxs_ofdata_to_platdata(struct udevice
> *bus)
> 
>  	return 0;
>  }
> -#endif
> 
>  static const struct udevice_id mxs_spi_ids[] = {
>  	{ .compatible = "fsl,imx23-spi" },
>  	{ .compatible = "fsl,imx28-spi" },
>  	{ }
>  };
> +#endif
> 
>  U_BOOT_DRIVER(mxs_spi) = {
> -	.name	= "mxs_spi",
> +#ifdef CONFIG_MX28
> +	.name = "fsl_imx28_spi",
> +#else /* CONFIG_MX23 */
> +	.name = "fsl_imx23_spi",
> +#endif
>  	.id	= UCLASS_SPI,
>  #if CONFIG_IS_ENABLED(OF_CONTROL)
> && !CONFIG_IS_ENABLED(OF_PLATDATA)
>  	.of_match = mxs_spi_ids,

Reviewed-by: Peng Fan <peng.fan at nxp.com>

> --
> 2.11.0