diff options
| author | Peter De Schrijver <pdeschrijver@nvidia.com> | 2013-04-03 17:40:37 +0300 |
|---|---|---|
| committer | Stephen Warren <swarren@nvidia.com> | 2013-04-04 16:10:38 -0600 |
| commit | dd93587be8dc8acf23a0d8a23efc74a91d8f0dfe (patch) | |
| tree | 10a49812292f09a9b5d5d33fb09cc895dfb16b32 /drivers/clk/tegra/clk-pll.c | |
| parent | dba4072a4a20b2986562cced98ce04a887614528 (diff) | |
| download | lwn-dd93587be8dc8acf23a0d8a23efc74a91d8f0dfe.tar.gz lwn-dd93587be8dc8acf23a0d8a23efc74a91d8f0dfe.zip | |
clk: tegra: Add TEGRA_PLL_BYPASS flag
Not all PLLs in Tegra114 have a bypass bit. Adapt the common code to only use
this bit when available.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'drivers/clk/tegra/clk-pll.c')
| -rw-r--r-- | drivers/clk/tegra/clk-pll.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/clk/tegra/clk-pll.c b/drivers/clk/tegra/clk-pll.c index 3feefb15e473..4ee6d03bc575 100644 --- a/drivers/clk/tegra/clk-pll.c +++ b/drivers/clk/tegra/clk-pll.c @@ -171,7 +171,8 @@ static void _clk_pll_enable(struct clk_hw *hw) clk_pll_enable_lock(pll); val = pll_readl_base(pll); - val &= ~PLL_BASE_BYPASS; + if (pll->flags & TEGRA_PLL_BYPASS) + val &= ~PLL_BASE_BYPASS; val |= PLL_BASE_ENABLE; pll_writel_base(val, pll); @@ -188,7 +189,9 @@ static void _clk_pll_disable(struct clk_hw *hw) u32 val; val = pll_readl_base(pll); - val &= ~(PLL_BASE_BYPASS | PLL_BASE_ENABLE); + if (pll->flags & TEGRA_PLL_BYPASS) + val &= ~PLL_BASE_BYPASS; + val &= ~PLL_BASE_ENABLE; pll_writel_base(val, pll); if (pll->flags & TEGRA_PLLM) { @@ -459,7 +462,7 @@ static unsigned long clk_pll_recalc_rate(struct clk_hw *hw, val = pll_readl_base(pll); - if (val & PLL_BASE_BYPASS) + if ((pll->flags & TEGRA_PLL_BYPASS) && (val & PLL_BASE_BYPASS)) return parent_rate; if ((pll->flags & TEGRA_PLL_FIXED) && !(val & PLL_BASE_OVERRIDE)) { @@ -671,6 +674,7 @@ struct clk *tegra_clk_register_pll(const char *name, const char *parent_name, struct tegra_clk_pll *pll; struct clk *clk; + pll_flags |= TEGRA_PLL_BYPASS; pll = _tegra_init_pll(clk_base, pmc, fixed_rate, pll_params, pll_flags, freq_table, lock); if (IS_ERR(pll)) @@ -692,8 +696,8 @@ struct clk *tegra_clk_register_plle(const char *name, const char *parent_name, { struct tegra_clk_pll *pll; struct clk *clk; - pll_flags |= TEGRA_PLL_LOCK_MISC; + pll_flags |= TEGRA_PLL_LOCK_MISC | TEGRA_PLL_BYPASS; pll = _tegra_init_pll(clk_base, pmc, fixed_rate, pll_params, pll_flags, freq_table, lock); if (IS_ERR(pll)) |