linux-kernel - Re: [PATCH V4 1/2] mmc: sdhci-msm: Add interconnect bandwidth scaling support

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Message-ID: <CAPDyKFpqk7bvv9pWR63maqfxvquQ5QHUq7ACswLj78qmsBkyqQ@mail.gmail.com>
Date:   Tue, 16 Jun 2020 13:32:11 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Pradeep P V K <ppvk@...eaurora.org>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Rob Herring <robh+dt@...nel.org>,
        Veerabhadrarao Badiganti <vbadigan@...eaurora.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Georgi Djakov <georgi.djakov@...aro.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        linux-mmc-owner@...r.kernel.org,
        Rajendra Nayak <rnayak@...eaurora.org>, sibis@...eaurora.org,
        matthias@...omium.org
Subject: Re: [PATCH V4 1/2] mmc: sdhci-msm: Add interconnect bandwidth scaling support

On Tue, 9 Jun 2020 at 10:38, Pradeep P V K <ppvk@...eaurora.org> wrote:
>
> Interconnect bandwidth scaling support is now added as a
> part of OPP. So, make sure interconnect driver is ready
> before handling interconnect scaling.
>
> Signed-off-by: Pradeep P V K <ppvk@...eaurora.org>
> Reviewed-by: Sibi Sankar <sibis@...eaurora.org>

Applied for next, thanks!

Kind regards
Uffe


> ---
>
> This change is based on
> [1] [Patch v8] Introduce OPP bandwidth bindings
> (https://lkml.org/lkml/2020/5/12/493)
>
> [2] [Patch v3] mmc: sdhci-msm: Fix error handling
> for dev_pm_opp_of_add_table()
> (https://lkml.org/lkml/2020/5/5/491)
>
>  drivers/mmc/host/sdhci-msm.c | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
> index b277dd7..15c42b0 100644
> --- a/drivers/mmc/host/sdhci-msm.c
> +++ b/drivers/mmc/host/sdhci-msm.c
> @@ -14,6 +14,7 @@
>  #include <linux/slab.h>
>  #include <linux/iopoll.h>
>  #include <linux/regulator/consumer.h>
> +#include <linux/interconnect.h>
>
>  #include "sdhci-pltfm.h"
>  #include "cqhci.h"
> @@ -2070,6 +2071,11 @@ static int sdhci_msm_probe(struct platform_device *pdev)
>         }
>         msm_host->bulk_clks[0].clk = clk;
>
> +        /* Check for optional interconnect paths */
> +       ret = dev_pm_opp_of_find_icc_paths(&pdev->dev, NULL);
> +       if (ret)
> +               goto bus_clk_disable;
> +
>         msm_host->opp_table = dev_pm_opp_set_clkname(&pdev->dev, "core");
>         if (IS_ERR(msm_host->opp_table)) {
>                 ret = PTR_ERR(msm_host->opp_table);
> --
> 1.9.1
>