[PATCH] serial: ns16550: Fix reading clock-frequency property

[Sascha Hauer]

On Mon, Jun 22, 2015 at 12:33:07PM +0300, Antony Pavlov wrote:
> On Mon, 22 Jun 2015 10:48:40 +0200
> Sascha Hauer <s.hauer at pengutronix.de> wrote:
> 
> > The clock-frequency property is never read because the driver
> 
> hmmm, but how qemu-malta works?

Probably qemu-malta has clk support disabled, so:

static inline struct clk *clk_get(struct device_d *dev, const char *id)
{
	return NULL;
}

Which is a valid clk and the driver is happy. clk_get_rate(priv->clk)
returns 0 and the drivers continues with:

        if (priv->plat.clock == 0 && IS_ENABLED(CONFIG_OFDEVICE)) {
                struct device_node *np = dev->device_node;

                of_property_read_u32(np, "clock-frequency", &priv->plat.clock);
        }

Which will read the correct clock-frequency from the device tree.

Sascha

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