diff options
Diffstat (limited to 'drivers/usb/misc/usb3503.c')
| -rw-r--r-- | drivers/usb/misc/usb3503.c | 47 |
1 files changed, 24 insertions, 23 deletions
diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c index 258d2f546e43..64ff5b91752d 100644 --- a/drivers/usb/misc/usb3503.c +++ b/drivers/usb/misc/usb3503.c @@ -186,8 +186,31 @@ static int usb3503_probe(struct usb3503 *hub) hub->mode = pdata->initial_mode; } else if (np) { struct clk *clk; + u32 rate = 0; hub->port_off_mask = 0; + if (!of_property_read_u32(np, "refclk-frequency", &rate)) { + switch (rate) { + case 38400000: + case 26000000: + case 19200000: + case 12000000: + hub->secondary_ref_clk = 0; + break; + case 24000000: + case 27000000: + case 25000000: + case 50000000: + hub->secondary_ref_clk = 1; + break; + default: + dev_err(dev, + "unsupported reference clock rate (%d)\n", + (int) rate); + return -EINVAL; + } + } + clk = devm_clk_get(dev, "refclk"); if (IS_ERR(clk) && PTR_ERR(clk) != -ENOENT) { dev_err(dev, "unable to request refclk (%ld)\n", @@ -196,31 +219,9 @@ static int usb3503_probe(struct usb3503 *hub) } if (!IS_ERR(clk)) { - u32 rate = 0; hub->clk = clk; - if (!of_property_read_u32(np, "refclk-frequency", - &rate)) { - - switch (rate) { - case 38400000: - case 26000000: - case 19200000: - case 12000000: - hub->secondary_ref_clk = 0; - break; - case 24000000: - case 27000000: - case 25000000: - case 50000000: - hub->secondary_ref_clk = 1; - break; - default: - dev_err(dev, - "unsupported reference clock rate (%d)\n", - (int) rate); - return -EINVAL; - } + if (rate != 0) { err = clk_set_rate(hub->clk, rate); if (err) { dev_err(dev, |