diff options
Diffstat (limited to 'drivers/clk/imx/clk-fracn-gppll.c')
| -rw-r--r-- | drivers/clk/imx/clk-fracn-gppll.c | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/drivers/clk/imx/clk-fracn-gppll.c b/drivers/clk/imx/clk-fracn-gppll.c index c54f9999da04..090d60867250 100644 --- a/drivers/clk/imx/clk-fracn-gppll.c +++ b/drivers/clk/imx/clk-fracn-gppll.c @@ -78,9 +78,11 @@ struct clk_fracn_gppll { * The Fvco should be in range 2.5Ghz to 5Ghz */ static const struct imx_fracn_gppll_rate_table fracn_tbl[] = { + PLL_FRACN_GP(1039500000U, 173, 25, 100, 1, 4), PLL_FRACN_GP(650000000U, 162, 50, 100, 0, 6), PLL_FRACN_GP(594000000U, 198, 0, 1, 0, 8), PLL_FRACN_GP(560000000U, 140, 0, 1, 0, 6), + PLL_FRACN_GP(519750000U, 173, 25, 100, 1, 8), 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), @@ -105,6 +107,7 @@ 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), + PLL_FRACN_GP_INTEGER(800000000U, 200, 1, 6), }; struct imx_fracn_gppll_clk imx_fracn_gppll_integer = { @@ -131,8 +134,8 @@ imx_get_pll_settings(struct clk_fracn_gppll *pll, unsigned long rate) return NULL; } -static long clk_fracn_gppll_round_rate(struct clk_hw *hw, unsigned long rate, - unsigned long *prate) +static int clk_fracn_gppll_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { struct clk_fracn_gppll *pll = to_clk_fracn_gppll(hw); const struct imx_fracn_gppll_rate_table *rate_table = pll->rate_table; @@ -140,11 +143,16 @@ static long clk_fracn_gppll_round_rate(struct clk_hw *hw, unsigned long rate, /* Assuming rate_table is in descending order */ for (i = 0; i < pll->rate_count; i++) - if (rate >= rate_table[i].rate) - return rate_table[i].rate; + if (req->rate >= rate_table[i].rate) { + req->rate = rate_table[i].rate; + + return 0; + } /* return minimum supported value */ - return rate_table[pll->rate_count - 1].rate; + req->rate = rate_table[pll->rate_count - 1].rate; + + return 0; } static unsigned long clk_fracn_gppll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) @@ -251,9 +259,11 @@ 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); + readl(pll->base + PLL_DIV); 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); + readl(pll->base + PLL_NUMERATOR); } /* Wait for 5us according to fracn mode pll doc */ @@ -262,6 +272,7 @@ static int clk_fracn_gppll_set_rate(struct clk_hw *hw, unsigned long drate, /* Enable Powerup */ tmp |= POWERUP_MASK; writel_relaxed(tmp, pll->base + PLL_CTRL); + readl(pll->base + PLL_CTRL); /* Wait Lock */ ret = clk_fracn_gppll_wait_lock(pll); @@ -290,19 +301,24 @@ static int clk_fracn_gppll_prepare(struct clk_hw *hw) if (val & POWERUP_MASK) return 0; + if (pll->flags & CLK_FRACN_GPPLL_FRACN) + writel_relaxed(readl_relaxed(pll->base + PLL_NUMERATOR), + pll->base + PLL_NUMERATOR); + val |= CLKMUX_BYPASS; writel_relaxed(val, pll->base + PLL_CTRL); val |= POWERUP_MASK; writel_relaxed(val, pll->base + PLL_CTRL); - - val |= CLKMUX_EN; - writel_relaxed(val, pll->base + PLL_CTRL); + readl(pll->base + PLL_CTRL); ret = clk_fracn_gppll_wait_lock(pll); if (ret) return ret; + val |= CLKMUX_EN; + writel_relaxed(val, pll->base + PLL_CTRL); + val &= ~CLKMUX_BYPASS; writel_relaxed(val, pll->base + PLL_CTRL); @@ -334,7 +350,7 @@ static const struct clk_ops clk_fracn_gppll_ops = { .unprepare = clk_fracn_gppll_unprepare, .is_prepared = clk_fracn_gppll_is_prepared, .recalc_rate = clk_fracn_gppll_recalc_rate, - .round_rate = clk_fracn_gppll_round_rate, + .determine_rate = clk_fracn_gppll_determine_rate, .set_rate = clk_fracn_gppll_set_rate, }; |