diff options
| author | Peter De Schrijver <pdeschrijver@nvidia.com> | 2017-02-23 13:44:43 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2017-03-20 16:05:46 +0300 |
| commit | ef6ed2b9562c1b2354dbbbcfeacd37ce91111502 (patch) | |
| tree | 2bb146b5781504c2517d39c9861b288e107cd587 /drivers/clk/tegra/clk-tegra210.c | |
| parent | 8dce89a1c2cf458875e0a703f3671bdb72b54c53 (diff) | |
| download | linux-ef6ed2b9562c1b2354dbbbcfeacd37ce91111502.tar.xz | |
clk: tegra: Correct tegra210_pll_fixed_mdiv_cfg rate calculation
Return the actually achieved rate in cfg->output_rate rather than just
the requested rate. This is important to make clk_round_rate() return
the correct result.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Tested-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/clk/tegra/clk-tegra210.c')
| -rw-r--r-- | drivers/clk/tegra/clk-tegra210.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/clk/tegra/clk-tegra210.c b/drivers/clk/tegra/clk-tegra210.c index fe698d2f9004..58d7f9ce9197 100644 --- a/drivers/clk/tegra/clk-tegra210.c +++ b/drivers/clk/tegra/clk-tegra210.c @@ -1222,6 +1222,7 @@ static int tegra210_pll_fixed_mdiv_cfg(struct clk_hw *hw, cfg->n = p_rate / cf; cfg->sdm_data = 0; + cfg->output_rate = input_rate; if (params->sdm_ctrl_reg) { unsigned long rem = p_rate - cf * cfg->n; /* If ssc is enabled SDM enabled as well, even for integer n */ @@ -1232,10 +1233,15 @@ static int tegra210_pll_fixed_mdiv_cfg(struct clk_hw *hw, s -= PLL_SDM_COEFF / 2; cfg->sdm_data = sdin_din_to_data(s); } + cfg->output_rate *= cfg->n * PLL_SDM_COEFF + PLL_SDM_COEFF/2 + + sdin_data_to_din(cfg->sdm_data); + cfg->output_rate /= p * cfg->m * PLL_SDM_COEFF; + } else { + cfg->output_rate *= cfg->n; + cfg->output_rate /= p * cfg->m; } cfg->input_rate = input_rate; - cfg->output_rate = rate; return 0; } |