Antoine Tenart <[email protected]> writes:

> Some controllers (as the coming Berlin nand controller) need to enable
> an ECC clock. Add support for this clock in the pxa3xx nand driver, and
> leave it as non mandatory.
> -     info->clk = devm_clk_get(&pdev->dev, NULL);
> +     info->clk = devm_clk_get(&pdev->dev, "nfc");
>       if (IS_ERR(info->clk)) {
> -             dev_err(&pdev->dev, "failed to get nand clock\n");
> -             return PTR_ERR(info->clk);
> +             info->clk = devm_clk_get(&pdev->dev, NULL);
> +
> +             if (IS_ERR(info->clk)) {
> +                     dev_err(&pdev->dev, "failed to get nand clock\n");
> +                     return PTR_ERR(info->clk);
> +             }
I suppose this is done to keep the compatibility with existing pxa3xx/berlin
clock code, which was defined without a con_id. More specifically I'm thinking
of the function clk_find().

Now maybe it would be cleaner to keep you "nfc" change, remove the failback plan
with NULL as an con_id, and change the clock providers. I cannot speak for
berlin/others, but for pxa3xx, this is one 3 hunks change in :
 - drivers/clk/pxa/clk-pxa3xx.c

Cheers.

--
Robert
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