sunxi: Add video pll clock functions

[karo-tx-uboot.git] / arch / arm / cpu / armv7 / sunxi / clock_sun4i.c

diff --git a/arch/arm/cpu/armv7/sunxi/clock_sun4i.c b/arch/arm/cpu/armv7/sunxi/clock_sun4i.c
index a0e49d179feff469f212f479925bc6ab881b3585..49f4032e9cfda56acab108adf57278c63e5e63a0 100644 (file)
--- a/arch/arm/cpu/armv7/sunxi/clock_sun4i.c
+++ b/arch/arm/cpu/armv7/sunxi/clock_sun4i.c
@@ -180,6 +180,21 @@ void clock_set_pll1(unsigned int hz)
 }
 #endif
 
+void clock_set_pll3(unsigned int clk)
+{
+       struct sunxi_ccm_reg * const ccm =
+               (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+
+       if (clk == 0) {
+               clrbits_le32(&ccm->pll3_cfg, CCM_PLL3_CTRL_EN);
+               return;
+       }
+
+       /* PLL3 rate = 3000000 * m */
+       writel(CCM_PLL3_CTRL_EN | CCM_PLL3_CTRL_INTEGER_MODE |
+              CCM_PLL3_CTRL_M(clk / 3000000), &ccm->pll3_cfg);
+}
+
 unsigned int clock_get_pll5p(void)
 {
        struct sunxi_ccm_reg *const ccm =
@@ -200,3 +215,15 @@ unsigned int clock_get_pll6(void)
        int k = ((rval & CCM_PLL6_CTRL_K_MASK) >> CCM_PLL6_CTRL_K_SHIFT) + 1;
        return 24000000 * n * k / 2;
 }
+
+void clock_set_de_mod_clock(u32 *clk_cfg, unsigned int hz)
+{
+       int pll = clock_get_pll5p();
+       int div = 1;
+
+       while ((pll / div) > hz)
+               div++;
+
+       writel(CCM_DE_CTRL_GATE | CCM_DE_CTRL_RST | CCM_DE_CTRL_PLL5P |
+              CCM_DE_CTRL_M(div), clk_cfg);
+}