diff options
Diffstat (limited to 'drivers/clk/at91/clk-usb.c')
| -rw-r--r-- | drivers/clk/at91/clk-usb.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/clk/at91/clk-usb.c b/drivers/clk/at91/clk-usb.c index 2cf68593c0..4862f881fc 100644 --- a/drivers/clk/at91/clk-usb.c +++ b/drivers/clk/at91/clk-usb.c @@ -30,6 +30,7 @@ struct at91sam9x5_clk_usb { struct regmap *regmap; const char *parent_names[USB_SOURCE_MAX]; u32 usbs_mask; + u8 num_parents; }; #define to_at91sam9x5_clk_usb(clk) \ @@ -62,7 +63,7 @@ static int at91sam9x5_clk_usb_set_parent(struct clk *clk, u8 index) { struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(clk); - if (index > 1) + if (index >= usb->num_parents) return -EINVAL; regmap_write_bits(usb->regmap, AT91_PMC_USB, usb->usbs_mask, index); @@ -160,7 +161,8 @@ _at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name, /* init.flags = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE | */ /* CLK_SET_RATE_PARENT; */ usb->regmap = regmap; - usb->usbs_mask = SAM9X5_USBS_MASK; + usb->usbs_mask = usbs_mask; + usb->num_parents = num_parents; ret = clk_register(&usb->clk); if (ret) { @@ -247,6 +249,9 @@ static long at91rm9200_clk_usb_round_rate(struct clk *clk, unsigned long rate, tmp_parent_rate = rate * usb->divisors[i]; tmp_parent_rate = clk_round_rate(parent, tmp_parent_rate); + if (!tmp_parent_rate) + continue; + tmprate = DIV_ROUND_CLOSEST(tmp_parent_rate, usb->divisors[i]); if (tmprate < rate) tmpdiff = rate - tmprate; |