[U-Boot] [RFC PATCH] common: miiphyutil: Work and report phy address in hex in mdio cmd

[Dongpo Li <lidongpo@hisilicon.com>]

On 2016/11/16 16:24, Michal Simek wrote:
> It is confusing that mdio commands work and report phy id as
> decimal value when mii is working with hex values.
> 
> For example:
> ZynqMP> mdio list
> gem:
> 21 - TI DP83867 <--> ethernet at ff0e0000
> ZynqMP> mdio read ethernet at ff0e0000 0
> Reading from bus gem
> PHY at address 21:
> 0 - 0x1140
> ZynqMP> mii dump 21 0
> Incorrect PHY address. Range should be 0-31
> ...
> ZynqMP> mii dump 15
> 0.     (1140)                 -- PHY control register --
>   (8000:0000) 0.15    =     0    reset
> 
> U-Boot normally takes hex values that's why this patch is changing mdio
> command to handle hex instead of changing mii command to handle decimal
> values.
> 
> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
> ---
> 
>  cmd/mdio.c             | 6 +++---
>  common/miiphyutil.c    | 2 +-
>  drivers/net/zynq_gem.c | 2 +-
>  3 files changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/cmd/mdio.c b/cmd/mdio.c
> index fb13d050752a..21dc103736e7 100644
> --- a/cmd/mdio.c
> +++ b/cmd/mdio.c
> @@ -27,12 +27,12 @@ static uint last_reg_hi;
>  static int extract_range(char *input, int *plo, int *phi)
>  {
>  	char *end;
> -	*plo = simple_strtol(input, &end, 0);
> +	*plo = simple_strtol(input, &end, 16);
Hi, the last parameter 0 of function simple_strtol should mean
it can recognize the integer automatic as hex value if the data is beginning with 0x,
as octet value if beginning with 0, else decimal value.
So this code has no problem.
I checked the implementation of function simple_strtol and found the following code:
        if (!base)
                base = 10;
So I think we should fix the implementation of simple_strtol.

>  	if (end == input)
>  		return -1;
>  
>  	if ((*end == '-') && *(++end))
> -		*phi = simple_strtol(end, NULL, 0);
> +		*phi = simple_strtol(end, NULL, 16);
>  	else if (*end == '\0')
>  		*phi = *plo;
>  	else
> @@ -79,7 +79,7 @@ static int mdio_read_ranges(struct phy_device *phydev, struct mii_dev *bus,
>  
>  	printf("Reading from bus %s\n", bus->name);
>  	for (addr = addrlo; addr <= addrhi; addr++) {
> -		printf("PHY at address %d:\n", addr);
> +		printf("PHY at address %x:\n", addr);
Maybe '0x%x' is more clear than '%x'.

>  
>  		for (devad = devadlo; devad <= devadhi; devad++) {
>  			for (reg = reglo; reg <= reghi; reg++) {
> diff --git a/common/miiphyutil.c b/common/miiphyutil.c
> index d8ebb384dbfa..aca18db52a00 100644
> --- a/common/miiphyutil.c
> +++ b/common/miiphyutil.c
> @@ -135,7 +135,7 @@ void mdio_list_devices(void)
>  			struct phy_device *phydev = bus->phymap[i];
>  
>  			if (phydev) {
> -				printf("%d - %s", i, phydev->drv->name);
> +				printf("%x - %s", i, phydev->drv->name);
Ditto.

>  
>  				if (phydev->dev)
>  					printf(" <--> %s\n", phydev->dev->name);
> diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c
> index 3319e10467d0..526eac658ac5 100644
> --- a/drivers/net/zynq_gem.c
> +++ b/drivers/net/zynq_gem.c
> @@ -706,7 +706,7 @@ static int zynq_gem_ofdata_to_platdata(struct udevice *dev)
>  
>  	priv->emio = fdtdec_get_bool(gd->fdt_blob, dev->of_offset, "xlnx,emio");
>  
> -	printf("ZYNQ GEM: %lx, phyaddr %d, interface %s\n", (ulong)priv->iobase,
> +	printf("ZYNQ GEM: %lx, phyaddr %x, interface %s\n", (ulong)priv->iobase,
Ditto.

>  	       priv->phyaddr, phy_string_for_interface(priv->interface));
>  
>  	return 0;
> 


    Regards,
    Dongpo

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