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arm: Xilinx Zynq clock changes for v3.12 

Just small two changes where the first fixes
 documentation and the second improves
 code readability.
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Merge tag 'zynq-clk-for-3.12' of git://git.xilinx.com/linux-xlnx into clk-next

arm: Xilinx Zynq clock changes for v3.12

Just small two changes where the first fixes
documentation and the second improves
code readability.
This commit is contained in:
Mike Turquette 2013-08-20 14:58:48 -07:00
parent e366fdd725 353dc6c47d
commit bddbd13453
1 changed files with 14 additions and 5 deletions
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19
drivers/clk/zynq/pll.c
View File

@ -50,6 +50,9 @@ struct zynq_pll {
#define PLLCTRL_RESET_MASK 1
#define PLLCTRL_RESET_SHIFT 0
#define PLL_FBDIV_MIN 13
#define PLL_FBDIV_MAX 66
/**
* zynq_pll_round_rate() - Round a clock frequency
* @hw: Handle between common and hardware-specific interfaces
@ -63,10 +66,10 @@ static long zynq_pll_round_rate(struct clk_hw *hw, unsigned long rate,
u32 fbdiv;
fbdiv = DIV_ROUND_CLOSEST(rate, *prate);
if (fbdiv < 13)
fbdiv = 13;
else if (fbdiv > 66)
fbdiv = 66;
if (fbdiv < PLL_FBDIV_MIN)
fbdiv = PLL_FBDIV_MIN;
else if (fbdiv > PLL_FBDIV_MAX)
fbdiv = PLL_FBDIV_MAX;
return *prate * fbdiv;
}
@ -182,7 +185,13 @@ static const struct clk_ops zynq_pll_ops = {
/**
* clk_register_zynq_pll() - Register PLL with the clock framework
* @np Pointer to the DT device node
* @name PLL name
* @parent Parent clock name
* @pll_ctrl Pointer to PLL control register
* @pll_status Pointer to PLL status register
* @lock_index Bit index to this PLL's lock status bit in @pll_status
* @lock Register lock
* Returns handle to the registered clock.
*/
struct clk *clk_register_zynq_pll(const char *name, const char *parent,
void __iomem *pll_ctrl, void __iomem *pll_status, u8 lock_index,