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| author | Jernej Skrabec <jernej.skrabec@siol.net> | 2017-03-27 19:22:31 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2017-04-20 13:37:31 +0200 |
| commit | 1ae5def6be484b0ee2c6ef72c750349b72342ac9 (patch) | |
| tree | ff906db03e737fbb4b63a3b6a5551a3ba5c1d03f /arch/arm/mach-sunxi | |
| parent | 30ca20234e0cdce6e514ee6c1e73c97578efaea3 (diff) | |
| download | u-boot-midas-1ae5def6be484b0ee2c6ef72c750349b72342ac9.tar.gz u-boot-midas-1ae5def6be484b0ee2c6ef72c750349b72342ac9.tar.bz2 u-boot-midas-1ae5def6be484b0ee2c6ef72c750349b72342ac9.zip | |
sunxi: Add clock support for DE2/HDMI/TCON on newer SoCs
This is needed for HDMI, which will be added later.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Diffstat (limited to 'arch/arm/mach-sunxi')
| -rw-r--r-- | arch/arm/mach-sunxi/clock_sun6i.c | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/arch/arm/mach-sunxi/clock_sun6i.c b/arch/arm/mach-sunxi/clock_sun6i.c index 9068c88ab2..631bc6e250 100644 --- a/arch/arm/mach-sunxi/clock_sun6i.c +++ b/arch/arm/mach-sunxi/clock_sun6i.c @@ -35,7 +35,7 @@ void clock_init_safe(void) clrbits_le32(&prcm->pll_ctrl1, PRCM_PLL_CTRL_LDO_KEY_MASK); #endif -#ifdef CONFIG_MACH_SUN8I_R40 +#if defined(CONFIG_MACH_SUN8I_R40) || defined(CONFIG_MACH_SUN50I) /* Set PLL lock enable bits and switch to old lock mode */ writel(GENMASK(12, 0), &ccm->pll_lock_ctrl); #endif @@ -150,6 +150,22 @@ void clock_set_pll3(unsigned int clk) &ccm->pll3_cfg); } +#ifdef CONFIG_SUNXI_DE2 +void clock_set_pll3_factors(int m, int n) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* PLL3 rate = 24000000 * n / m */ + writel(CCM_PLL3_CTRL_EN | CCM_PLL3_CTRL_INTEGER_MODE | + CCM_PLL3_CTRL_N(n) | CCM_PLL3_CTRL_M(m), + &ccm->pll3_cfg); + + while (!(readl(&ccm->pll3_cfg) & CCM_PLL3_CTRL_LOCK)) + ; +} +#endif + void clock_set_pll5(unsigned int clk, bool sigma_delta_enable) { struct sunxi_ccm_reg * const ccm = @@ -222,6 +238,28 @@ done: } #endif +#ifdef CONFIG_SUNXI_DE2 +void clock_set_pll10(unsigned int clk) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + const int m = 2; /* 12 MHz steps */ + + if (clk == 0) { + clrbits_le32(&ccm->pll10_cfg, CCM_PLL10_CTRL_EN); + return; + } + + /* PLL10 rate = 24000000 * n / m */ + writel(CCM_PLL10_CTRL_EN | CCM_PLL10_CTRL_INTEGER_MODE | + CCM_PLL10_CTRL_N(clk / (24000000 / m)) | CCM_PLL10_CTRL_M(m), + &ccm->pll10_cfg); + + while (!(readl(&ccm->pll10_cfg) & CCM_PLL10_CTRL_LOCK)) + ; +} +#endif + #if defined(CONFIG_MACH_SUN8I_A33) || \ defined(CONFIG_MACH_SUN8I_R40) || \ defined(CONFIG_MACH_SUN50I) |