[PATCH v2 05/10] clk: berlin: add driver for BG2x complex divider cells

On 14/05/2014 at 22:15:16 +0200, Sebastian Hesselbarth wrote :

+static u8 berlin2_div_get_parent(struct clk_hw *hw)
+{
+	struct berlin2_div *div = to_berlin2_div(hw);
+	struct berlin2_div_map *map = &div->map;
+	u32 reg;
+	u8 index = 0;
+
+	if (div->lock)
+		spin_lock(div->lock);
+
+	/* PLL_SWITCH == 0 is index 0 */
+	reg = readl_relaxed(div->base + map->pll_switch_offs);
+	reg &= BIT(map->pll_switch_shift);
+	if (reg) {
+		reg = readl_relaxed(div->base + map->pll_select_offs);
+		reg >>= map->pll_select_shift;
+		reg &= PLL_SELECT_MASK;
+		index = 1 + reg;

After getting more insight, I think we don't need to add 1, see my
comment on the next patchs.


-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com