diff options
Diffstat (limited to 'drivers/clk/imx/clk-fracn-gppll.c')
| -rw-r--r-- | drivers/clk/imx/clk-fracn-gppll.c | 91 |
1 files changed, 77 insertions, 14 deletions
diff --git a/drivers/clk/imx/clk-fracn-gppll.c b/drivers/clk/imx/clk-fracn-gppll.c index a2aaa14fc1ae..c54f9999da04 100644 --- a/drivers/clk/imx/clk-fracn-gppll.c +++ b/drivers/clk/imx/clk-fracn-gppll.c @@ -15,6 +15,7 @@ #include "clk.h" #define PLL_CTRL 0x0 +#define HW_CTRL_SEL BIT(16) #define CLKMUX_BYPASS BIT(2) #define CLKMUX_EN BIT(1) #define POWERUP_MASK BIT(0) @@ -52,26 +53,40 @@ .odiv = (_odiv), \ } +#define PLL_FRACN_GP_INTEGER(_rate, _mfi, _rdiv, _odiv) \ + { \ + .rate = (_rate), \ + .mfi = (_mfi), \ + .mfn = 0, \ + .mfd = 0, \ + .rdiv = (_rdiv), \ + .odiv = (_odiv), \ + } + struct clk_fracn_gppll { struct clk_hw hw; void __iomem *base; const struct imx_fracn_gppll_rate_table *rate_table; int rate_count; + u32 flags; }; /* - * Fvco = Fref * (MFI + MFN / MFD) - * Fout = Fvco / (rdiv * odiv) + * Fvco = (Fref / rdiv) * (MFI + MFN / MFD) + * Fout = Fvco / odiv + * The (Fref / rdiv) should be in range 20MHz to 40MHz + * The Fvco should be in range 2.5Ghz to 5Ghz */ static const struct imx_fracn_gppll_rate_table fracn_tbl[] = { - PLL_FRACN_GP(650000000U, 81, 0, 1, 0, 3), + PLL_FRACN_GP(650000000U, 162, 50, 100, 0, 6), PLL_FRACN_GP(594000000U, 198, 0, 1, 0, 8), - PLL_FRACN_GP(560000000U, 70, 0, 1, 0, 3), - PLL_FRACN_GP(498000000U, 83, 0, 1, 0, 4), + PLL_FRACN_GP(560000000U, 140, 0, 1, 0, 6), + PLL_FRACN_GP(498000000U, 166, 0, 1, 0, 8), PLL_FRACN_GP(484000000U, 121, 0, 1, 0, 6), PLL_FRACN_GP(445333333U, 167, 0, 1, 0, 9), - PLL_FRACN_GP(400000000U, 50, 0, 1, 0, 3), - PLL_FRACN_GP(393216000U, 81, 92, 100, 0, 5) + PLL_FRACN_GP(400000000U, 200, 0, 1, 0, 12), + PLL_FRACN_GP(393216000U, 163, 84, 100, 0, 10), + PLL_FRACN_GP(300000000U, 150, 0, 1, 0, 12) }; struct imx_fracn_gppll_clk imx_fracn_gppll = { @@ -80,6 +95,24 @@ struct imx_fracn_gppll_clk imx_fracn_gppll = { }; EXPORT_SYMBOL_GPL(imx_fracn_gppll); +/* + * Fvco = (Fref / rdiv) * MFI + * Fout = Fvco / odiv + * The (Fref / rdiv) should be in range 20MHz to 40MHz + * The Fvco should be in range 2.5Ghz to 5Ghz + */ +static const struct imx_fracn_gppll_rate_table int_tbl[] = { + PLL_FRACN_GP_INTEGER(1700000000U, 141, 1, 2), + PLL_FRACN_GP_INTEGER(1400000000U, 175, 1, 3), + PLL_FRACN_GP_INTEGER(900000000U, 150, 1, 4), +}; + +struct imx_fracn_gppll_clk imx_fracn_gppll_integer = { + .rate_table = int_tbl, + .rate_count = ARRAY_SIZE(int_tbl), +}; +EXPORT_SYMBOL_GPL(imx_fracn_gppll_integer); + static inline struct clk_fracn_gppll *to_clk_fracn_gppll(struct clk_hw *hw) { return container_of(hw, struct clk_fracn_gppll, hw); @@ -166,9 +199,15 @@ static unsigned long clk_fracn_gppll_recalc_rate(struct clk_hw *hw, unsigned lon break; } - /* Fvco = Fref * (MFI + MFN / MFD) */ - fvco = fvco * mfi * mfd + fvco * mfn; - do_div(fvco, mfd * rdiv * odiv); + if (pll->flags & CLK_FRACN_GPPLL_INTEGER) { + /* Fvco = (Fref / rdiv) * MFI */ + fvco = fvco * mfi; + do_div(fvco, rdiv * odiv); + } else { + /* Fvco = (Fref / rdiv) * (MFI + MFN / MFD) */ + fvco = fvco * mfi * mfd + fvco * mfn; + do_div(fvco, mfd * rdiv * odiv); + } return (unsigned long)fvco; } @@ -191,6 +230,11 @@ static int clk_fracn_gppll_set_rate(struct clk_hw *hw, unsigned long drate, rate = imx_get_pll_settings(pll, drate); + /* Hardware control select disable. PLL is control by register */ + tmp = readl_relaxed(pll->base + PLL_CTRL); + tmp &= ~HW_CTRL_SEL; + writel_relaxed(tmp, pll->base + PLL_CTRL); + /* Disable output */ tmp = readl_relaxed(pll->base + PLL_CTRL); tmp &= ~CLKMUX_EN; @@ -207,8 +251,10 @@ static int clk_fracn_gppll_set_rate(struct clk_hw *hw, unsigned long drate, pll_div = FIELD_PREP(PLL_RDIV_MASK, rate->rdiv) | rate->odiv | FIELD_PREP(PLL_MFI_MASK, rate->mfi); writel_relaxed(pll_div, pll->base + PLL_DIV); - writel_relaxed(rate->mfd, pll->base + PLL_DENOMINATOR); - writel_relaxed(FIELD_PREP(PLL_MFN_MASK, rate->mfn), pll->base + PLL_NUMERATOR); + if (pll->flags & CLK_FRACN_GPPLL_FRACN) { + writel_relaxed(rate->mfd, pll->base + PLL_DENOMINATOR); + writel_relaxed(FIELD_PREP(PLL_MFN_MASK, rate->mfn), pll->base + PLL_NUMERATOR); + } /* Wait for 5us according to fracn mode pll doc */ udelay(5); @@ -292,8 +338,10 @@ static const struct clk_ops clk_fracn_gppll_ops = { .set_rate = clk_fracn_gppll_set_rate, }; -struct clk_hw *imx_clk_fracn_gppll(const char *name, const char *parent_name, void __iomem *base, - const struct imx_fracn_gppll_clk *pll_clk) +static struct clk_hw *_imx_clk_fracn_gppll(const char *name, const char *parent_name, + void __iomem *base, + const struct imx_fracn_gppll_clk *pll_clk, + u32 pll_flags) { struct clk_fracn_gppll *pll; struct clk_hw *hw; @@ -314,6 +362,7 @@ struct clk_hw *imx_clk_fracn_gppll(const char *name, const char *parent_name, vo pll->hw.init = &init; pll->rate_table = pll_clk->rate_table; pll->rate_count = pll_clk->rate_count; + pll->flags = pll_flags; hw = &pll->hw; @@ -326,4 +375,18 @@ struct clk_hw *imx_clk_fracn_gppll(const char *name, const char *parent_name, vo return hw; } + +struct clk_hw *imx_clk_fracn_gppll(const char *name, const char *parent_name, void __iomem *base, + const struct imx_fracn_gppll_clk *pll_clk) +{ + return _imx_clk_fracn_gppll(name, parent_name, base, pll_clk, CLK_FRACN_GPPLL_FRACN); +} EXPORT_SYMBOL_GPL(imx_clk_fracn_gppll); + +struct clk_hw *imx_clk_fracn_gppll_integer(const char *name, const char *parent_name, + void __iomem *base, + const struct imx_fracn_gppll_clk *pll_clk) +{ + return _imx_clk_fracn_gppll(name, parent_name, base, pll_clk, CLK_FRACN_GPPLL_INTEGER); +} +EXPORT_SYMBOL_GPL(imx_clk_fracn_gppll_integer); |