linux-kernel - Re: [PATCH v3 9/9] interconnect: qcom: rpm: Don't use clk_get

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Date:   Mon, 23 Jan 2023 19:41:41 +0100
From:   Arnaud Vrac <rawoul@...il.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, andersson@...nel.org,
        agross@...nel.org, krzysztof.kozlowski@...aro.org,
        marijn.suijten@...ainline.org, bryan.odonoghue@...aro.org,
        Georgi Djakov <djakov@...nel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 9/9] interconnect: qcom: rpm: Don't use
 clk_get_optional for bus clocks anymore

Hi Konrad,

With this series on a db820c, I get an error on boot when probing
a0noc because no "bus" clock is defined. If I revert this patch it
works again.

-Arnaud

Le lun. 16 janv. 2023 à 14:31, Konrad Dybcio
<konrad.dybcio@...aro.org> a écrit :
>
> Commit dd42ec8ea5b9 ("interconnect: qcom: rpm: Use _optional func for provider clocks")
> relaxed the requirements around probing bus clocks. This was a decent
> solution for making sure MSM8996 would still boot with old DTs, but
> now that there's a proper fix in place that both old and new DTs
> will be happy about, revert back to the safer variant of the
> function.
>
> Fixes: dd42ec8ea5b9 ("interconnect: qcom: rpm: Use _optional func for provider clocks")
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>  drivers/interconnect/qcom/icc-rpm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c
> index 343e6021a93a..8cff724661f2 100644
> --- a/drivers/interconnect/qcom/icc-rpm.c
> +++ b/drivers/interconnect/qcom/icc-rpm.c
> @@ -522,7 +522,7 @@ int qnoc_probe(struct platform_device *pdev)
>         }
>
>  regmap_done:
> -       ret = devm_clk_bulk_get_optional(dev, qp->num_bus_clks, qp->bus_clks);
> +       ret = devm_clk_bulk_get(dev, qp->num_bus_clks, qp->bus_clks);
>         if (ret)
>                 return ret;
>
> --
> 2.39.0
>