On 11/25, Abhishek Sahu wrote:
> @@ -1736,13 +1737,55 @@ static int clk_cpu_div_set_rate(struct clk_hw *hw, unsigned long rate,
> };
> MODULE_DEVICE_TABLE(of, gcc_ipq4019_match_table);
>
> +/* Contains index for safe clock during APSS freq change */
> +static int gcc_ipq4019_cpu_safe_parent;
> +static int
> +gcc_ipq4019_cpu_clk_notifier_fn(struct notifier_block *nb,
> + unsigned long action, void *data)
> +{
> + int err = 0;
> +
> + if (action == PRE_RATE_CHANGE)
> + err = clk_rcg2_ops.set_parent(&apps_clk_src.clkr.hw,
> + gcc_ipq4019_cpu_safe_parent);
Why can't we hardcode this? It's not like this safe parent is
going to change across boards.
> +
> + return notifier_from_errno(err);
> +}
> +
> +static struct notifier_block gcc_ipq4019_cpu_clk_notifier = {
> + .notifier_call = gcc_ipq4019_cpu_clk_notifier_fn,
> +};
> +
> static int gcc_ipq4019_probe(struct platform_device *pdev)
> {
> - return qcom_cc_probe(pdev, &gcc_ipq4019_desc);
> + int err;
> +
> + err = qcom_cc_probe(pdev, &gcc_ipq4019_desc);
> + if (err)
> + return err;
> +
> + gcc_ipq4019_cpu_safe_parent = qcom_find_src_index(&apps_clk_src.clkr.hw,
> + apps_clk_src.parent_map,
> + P_FEPLL500);
> + if (gcc_ipq4019_cpu_safe_parent < 0)
> + err = gcc_ipq4019_cpu_safe_parent;
Then we don't need to do this.
> +
> + if (!err)
> + err = clk_notifier_register(apps_clk_src.clkr.hw.clk,
> + &gcc_ipq4019_cpu_clk_notifier);
> +
> + return err;
> +}
> +
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