On Sun, May 10, 2026 at 03:43:00PM +0700, phucduc.bui@gmail.com wrote:

> Move fsi_clk_init() to probe and use devm_clk_get_optional() for optional
> clocks. This allows probe to succeed even when some optional clocks are
> missing, while set_rate() performs strict validation to ensure all required
> clocks are available for hardware configuration during audio setup.

> +static int fsi_clk_init(struct device *dev, struct fsi_priv *fsi)

> +	if (!master->clk_spu) {
> +		master->clk_spu = devm_clk_get_optional(dev, "spu");
> +		if (IS_ERR(master->clk_spu))
> +			return PTR_ERR(master->clk_spu);
> +	}
> +

> @@ -1997,6 +2001,7 @@ static int fsi_probe(struct platform_device *pdev)
>  	fsi->running_streams = 0;
>  	fsi_port_info_init(fsi, &info.port_a);
>  	fsi_handler_init(fsi, &info.port_a);
> +	fsi_clk_init(&pdev->dev, fsi);

We ignore the return value from fsi_clk_init() which means deferred
probe won't work (as well as fatal errors).