Hi Laurent
> +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".
(snip)
> + 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;
> + }
Is this clock-output-names realy "Required" property ?
The "name" and "order" seem fixed, then,
I guess it can simply use "name array" ?
> +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;
> + }
Above 2 error cases are doing same thing.
If can use goto xxx_error.
Best regards
---
Kuninori Morimoto
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