On Tue, Feb 18, 2025, Heiko Stübner <heiko@xxxxxxxxx> wrote:
> I was more thinking about fixing the correct thing, with something like:
>
> ----------- 8< ----------
> diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
> index cf7720b9172f..50faafbf5dda 100644
> --- a/drivers/clk/clk.c
> +++ b/drivers/clk/clk.c
> @@ -5258,6 +5258,10 @@ of_clk_get_hw_from_clkspec(struct of_phandle_args *clkspec)
> if (!clkspec)
> return ERR_PTR(-EINVAL);
>
> + /* Check if node in clkspec is in disabled/fail state */
> + if (!of_device_is_available(clkspec->np))
> + return ERR_PTR(-ENOENT);
> +
> mutex_lock(&of_clk_mutex);
> list_for_each_entry(provider, &of_clk_providers, link) {
> if (provider->node == clkspec->np) {
> ----------- 8< ----------
>
> Because right now the clk framework does not handle nodes in
> failed/disabled state and would defer indefinitly.
I've been testing the recent patches Jimmy Hon has posted to add the
Orange Pi 5 Ultra DT and I ran into this bug. The Ultra uses HDMI1 for
the HDMI TX.
This patch successfully fixes the issue I was seeing.
JE
