[U-Boot] [PATCH v3 083/108] spi: ich: Support of-platdata for fast-spi

[Bin Meng]

Hi Simon,

On Mon, Oct 21, 2019 at 11:40 AM Simon Glass <sjg at chromium.org> wrote:
>
> The Intel Fast SPI interface is similar to ICH. Add of-platdata support
> for this using the "intel,fast-spi" compatible string.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
> Changes in v3: None
> Changes in v2: None
>
>  drivers/spi/ich.c | 17 ++++++++++++++---
>  1 file changed, 14 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c
> index b28f3423584..ae3bff36bba 100644
> --- a/drivers/spi/ich.c
> +++ b/drivers/spi/ich.c
> @@ -10,6 +10,7 @@
>  #include <common.h>
>  #include <div64.h>
>  #include <dm.h>
> +#include <dt-structs.h>
>  #include <errno.h>
>  #include <malloc.h>
>  #include <pch.h>
> @@ -28,9 +29,13 @@
>  #endif
>
>  struct ich_spi_platdata {
> +#if CONFIG_IS_ENABLED(OF_PLATDATA)
> +       struct dtd_intel_fast_spi dtplat;
> +#endif
>         enum ich_version ich_version;   /* Controller version, 7 or 9 */
>         bool lockdown;                  /* lock down controller settings? */
>         ulong mmio_base;                /* Base of MMIO registers */
> +       pci_dev_t bdf;                  /* PCI address used by of-platdata */
>  };
>
>  static u8 ich_readb(struct ich_spi_priv *priv, int reg)
> @@ -597,10 +602,16 @@ static int ich_spi_ofdata_to_platdata(struct udevice *dev)
>  {
>         struct ich_spi_platdata *plat = dev_get_platdata(dev);
>
> +#if !CONFIG_IS_ENABLED(OF_PLATDATA)
>         plat->ich_version = dev_get_driver_data(dev);
>         plat->lockdown = dev_read_bool(dev, "intel,spi-lock-down");
> -
>         pch_get_spi_base(dev->parent, &plat->mmio_base);
> +#else
> +       plat->ich_version = ICHV_APL;

I don't think the ICH_VERSION is something that is controlled via OF_PLATDATA.

> +       plat->mmio_base = plat->dtplat.early_regs[0];
> +       plat->bdf = pci_x86_ofplat_get_devfn(plat->dtplat.reg[0]);
> +#endif
> +       debug("%s: mmio_base=%lx\n", __func__, plat->mmio_base);
>
>         return 0;
>  }
> @@ -628,8 +639,8 @@ static const struct udevice_id ich_spi_ids[] = {
>         { }
>  };
>
> -U_BOOT_DRIVER(ich_spi) = {
> -       .name   = "ich_spi",
> +U_BOOT_DRIVER(intel_fast_spi) = {

Why changing the driver name?

> +       .name   = "intel_fast_spi",
>         .id     = UCLASS_SPI,
>         .of_match = ich_spi_ids,
>         .ops    = &ich_spi_ops,
> --

Regards,
Bin