Re: [PATCH 3/3] clk: shmobile: Add R8A7790 clocks support

+Required Properties:
+
+  - compatible: Must be "renesas,r8a7790-cpg-clocks"
+  - reg: Base address and length of the memory resource used by the CPG
+  - clocks: Reference to the parent clock
+  - #clock-cells: Must be 1
+  - clock-output-names: The name of the clocks, must be "main", "pll1",
+    "pll3", "lb", "qspi", "sdh", "sd0", "sd1".

+	for (i = 0; i < CPG_NUM_CLOCKS; ++i) {
+		const struct clk_div_table *table = NULL;
+		const char *parent_name = "main";
+		const char *name;
+		unsigned int shift;
+		unsigned int mult = 1;
+		unsigned int div = 1;
+		struct clk *clk;
+
+		of_property_read_string_index(np, "clock-output-names", i,
+					      &name);
+
+		switch (i) {
+		case R8A7790_CLK_MAIN:
+			parent_name = of_clk_get_parent_name(np, 0);
+			div = config->extal_div;
+			break;
+		case R8A7790_CLK_PLL1:
+			mult = config->pll1_mult / 2;
+			break;
+		case R8A7790_CLK_PLL3:
+			mult = config->pll3_mult;
+			break;
+		case R8A7790_CLK_LB:
+			div = cpg_mode & BIT(18) ? 36 : 24;
+			break;
+		case R8A7790_CLK_QSPI:
+			div = (cpg_mode & (BIT(3) | BIT(2) | BIT(1))) == BIT(2)
+			    ? 16 : 20;
+			break;
+		case R8A7790_CLK_SDH:
+			table = cpg_sdh_div_table;
+			shift = 8;
+			break;
+		case R8A7790_CLK_SD0:
+			table = cpg_sd01_div_table;
+			shift = 4;
+			break;
+		case R8A7790_CLK_SD1:
+			table = cpg_sd01_div_table;
+			shift = 0;
+			break;
+		}

+static void __init r8a7790_cpg_clocks_init(struct device_node *np)
+{
+	const struct cpg_pll_config *config;
+	struct r8a7790_cpg *cpg;
+	struct clk **clks;
+	unsigned int i;
+
+	cpg = kzalloc(sizeof(*cpg), GFP_KERNEL);
+	clks = kzalloc(CPG_NUM_CLOCKS * sizeof(*clks), GFP_KERNEL);
+	if (cpg == NULL || clks == NULL) {
+		kfree(clks);
+		kfree(cpg);
+		pr_err("%s: failed to allocate cpg\n", __func__);
+		return;
+	}
+
+	spin_lock_init(&cpg->lock);
+
+	cpg->data.clks = clks;
+	cpg->data.clk_num = CPG_NUM_CLOCKS;
+
+	cpg->reg = of_iomap(np, 0);
+	if (WARN_ON(cpg->reg == NULL)) {
+		kfree(cpg->data.clks);
+		kfree(cpg);
+		return;
+	}