[PATCH v3] Terasic DE0-Nano-SoC: add support

[Trent Piepho]

On Mon, 2016-02-01 at 15:07 +0100, Tim Sander wrote:
> v3: forgot to amend my changes in v2.
> 
> +
> +static int socfpga_console_init(void)
> +{
> +       if (!of_machine_is_compatible("altr,socfpga-cyclone5"))
> +               return 0;

Seems like this should be a board specific check instead of a generic
one, since it's programming board specific phy timing values to a board
specific PHY.

> +
> +       if (IS_ENABLED(CONFIG_PHYLIB))
> +               phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK, phy_fixup);
> +
> +       return 0;
> +}

> +
> +static inline void ledon(int led)
> +{
> +       u32 val;
> +
> +       val = readl(0xFF709000);
> +       val |= 1 << (led + 24);
> +       writel(val, 0xFF709000);

There a macro CYCLONE5_GPIO1_BASE that could be used instead of
0xFF709000.

> +
> +       val = readl(0xFF709004);
> +       val |= 1 << (led + 24);
> +       writel(val, 0xFF709004);
> +}
> +
> +static inline void ledoff(int led)
> +{
> +       u32 val;
> +
> +       val = readl(0xFF709000);
> +       val &= ~(1 << (led + 24));
> +       writel(val, 0xFF709000);
> +
> +       val = readl(0xFF709004);
> +       val &= ~(1 << (led + 24));
> +       writel(val, 0xFF709004);
> +}


> +#include <arm/socfpga_cyclone5_de0_nano_soc.dts>
> +#include "socfpga.dtsi"
> +
> +/ {
> +       model = "Terasic DE0-Nano-SoC (Atlas)";
> +       compatible = "altr,socfpga-cyclone5", "altr,socfpga";

Wouldn't the right thing to do here be to have a compatible entry for
this board type?  Like the existing "terasic,sockit" or something more
specific.