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| author | Tom Warren <twarren@nvidia.com> | 2015-06-25 09:50:44 -0700 |
|---|---|---|
| committer | Tom Warren <twarren@nvidia.com> | 2015-08-05 15:22:51 -0700 |
| commit | 722e000ccd7226c5cd071590b5361620eb0b126c (patch) | |
| tree | 257ddcaf4039dd6722e743e8a1f4035c2f85387f /arch/arm/mach-tegra/cpu.c | |
| parent | 3e8650c0f9cc7fb29bd75c11d0173768fcc80203 (diff) | |
| download | talos-obmc-uboot-722e000ccd7226c5cd071590b5361620eb0b126c.tar.gz talos-obmc-uboot-722e000ccd7226c5cd071590b5361620eb0b126c.zip | |
Tegra: PLL: use per-SoC pllinfo table instead of PLL_DIVM/N/P, etc.
Added PLL variables (dividers mask/shift, lock enable/detect, etc.)
to new pllinfo struct for each Soc/PLL. PLLA/C/D/E/M/P/U/X.
Used pllinfo struct in all clock functions, validated on T210.
Should be equivalent to prior code on T124/114/30/20. Thanks
to Marcel Ziswiler for corrections to the T20/T30 values.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/cpu.c')
| -rw-r--r-- | arch/arm/mach-tegra/cpu.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/arch/arm/mach-tegra/cpu.c b/arch/arm/mach-tegra/cpu.c index b9391d6933..ba04a56be7 100644 --- a/arch/arm/mach-tegra/cpu.c +++ b/arch/arm/mach-tegra/cpu.c @@ -181,6 +181,7 @@ static inline void pllx_set_iddq(void) int pllx_set_rate(struct clk_pll_simple *pll , u32 divn, u32 divm, u32 divp, u32 cpcon) { + struct clk_pll_info *pllinfo = &tegra_pll_info_table[CLOCK_ID_XCPU]; int chip = tegra_get_chip(); u32 reg; debug("%s entry\n", __func__); @@ -194,17 +195,21 @@ int pllx_set_rate(struct clk_pll_simple *pll , u32 divn, u32 divm, pllx_set_iddq(); /* Set BYPASS, m, n and p to PLLX_BASE */ - reg = PLL_BYPASS_MASK | (divm << PLL_DIVM_SHIFT); - reg |= ((divn << PLL_DIVN_SHIFT) | (divp << PLL_DIVP_SHIFT)); + reg = PLL_BYPASS_MASK | (divm << pllinfo->m_shift); + reg |= (divn << pllinfo->n_shift) | (divp << pllinfo->p_shift); writel(reg, &pll->pll_base); /* Set cpcon to PLLX_MISC */ if (chip == CHIPID_TEGRA20 || chip == CHIPID_TEGRA30) - reg = (cpcon << PLL_CPCON_SHIFT); + reg = (cpcon << pllinfo->kcp_shift); else reg = 0; - /* Set dccon to PLLX_MISC if freq > 600MHz */ + /* + * TODO(twarren@nvidia.com) Check which SoCs use DCCON + * and add to pllinfo table if needed! + */ + /* Set dccon to PLLX_MISC if freq > 600MHz */ if (divn > 600) reg |= (1 << PLL_DCCON_SHIFT); writel(reg, &pll->pll_misc); @@ -215,9 +220,10 @@ int pllx_set_rate(struct clk_pll_simple *pll , u32 divn, u32 divm, writel(reg, &pll->pll_base); debug("%s: base = 0x%08X\n", __func__, reg); - /* Set lock_enable to PLLX_MISC */ + /* Set lock_enable to PLLX_MISC if lock_ena is valid (i.e. 0-31) */ reg = readl(&pll->pll_misc); - reg |= PLL_LOCK_ENABLE_MASK; + if (pllinfo->lock_ena < 32) + reg |= (1 << pllinfo->lock_ena); writel(reg, &pll->pll_misc); debug("%s: misc = 0x%08X\n", __func__, reg); |
