[U-Boot] [PATCH 1/2] net: mvpp2: fix lookup of mdio registers base address

[Joe Hershberger]

On Wed, Nov 21, 2018 at 5:08 AM Baruch Siach <baruch at tkos.co.il> wrote:
>
> Current mdio base lookup code relies on a 'reg' property at the upper CP
> node. There is no 'reg' property there in current DT files of Armada
> CP110. Use ofnode_get_addr() instead since it provides proper DT address
> translation.
>
> Cc: Ken Ma <make at marvell.com>
> Cc: Stefan Chulski <stefanc at marvell.com>
> Signed-off-by: Baruch Siach <baruch at tkos.co.il>
> ---
>  drivers/net/mvpp2.c | 17 +++++++----------
>  1 file changed, 7 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/net/mvpp2.c b/drivers/net/mvpp2.c
> index 9b3ab25c1954..23c4da8cebbd 100644
> --- a/drivers/net/mvpp2.c
> +++ b/drivers/net/mvpp2.c
> @@ -4705,21 +4705,22 @@ static int phy_info_parse(struct udevice *dev, struct mvpp2_port *port)
>  {
>         int port_node = dev_of_offset(dev);
>         const char *phy_mode_str;
> -       int phy_node, mdio_off, cp_node;
> +       int phy_node;
>         u32 id;
>         u32 phyaddr = 0;
>         int phy_mode = -1;
> -       phys_addr_t mdio_addr;
>
>         phy_node = fdtdec_lookup_phandle(gd->fdt_blob, port_node, "phy");
>
>         if (phy_node > 0) {
> +               ofnode phy_ofnode;
> +               fdt_addr_t phy_base;
> +
>                 phyaddr = fdtdec_get_int(gd->fdt_blob, phy_node, "reg", 0);
>                 if (phyaddr < 0) {
>                         dev_err(&pdev->dev, "could not find phy address\n");
>                         return -1;
>                 }
> -               mdio_off = fdt_parent_offset(gd->fdt_blob, phy_node);
>
>                 /* TODO: This WA for mdio issue. U-boot 2017 don't have
>                  * mdio driver and on MACHIATOBin board ports from CP1
> @@ -4728,14 +4729,10 @@ static int phy_info_parse(struct udevice *dev, struct mvpp2_port *port)
>                  * base address. WA should be removed after
>                  * mdio driver implementation.
>                  */
> -               mdio_addr = fdtdec_get_uint(gd->fdt_blob,
> -                                           mdio_off, "reg", 0);
> -
> -               cp_node = fdt_parent_offset(gd->fdt_blob, mdio_off);
> -               mdio_addr |= fdt_get_base_address((void *)gd->fdt_blob,
> -                                                 cp_node);
>
> -               port->priv->mdio_base = (void *)mdio_addr;
> +               phy_ofnode = ofnode_get_parent(offset_to_ofnode(phy_node));
> +               phy_base = ofnode_get_addr(phy_ofnode);
> +               port->priv->mdio_base = (void *)phy_base;
>
>                 if (port->priv->mdio_base < 0) {
>                         dev_err(&pdev->dev, "could not find mdio base address\n");

Apologies for the delay.

Acked-by: Joe Hershberger <joe.hershberger at ni.com>