linux-kernel - Re: [PATCH 2/3] mmc: sdhci-of-arasan: Add intel Thunder Bay SOC support to the arasan eMMC driver

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Message-ID: <CAPDyKFqZ-H3+OnYyyY7y611YrRAAMFq+W65DMfM4wSNvY_fzjA@mail.gmail.com>
Date:   Fri, 6 Aug 2021 15:06:00 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     rashmi.a@...el.com
Cc:     linux-drivers-review-request@...ists.intel.com,
        Michal Simek <michal.simek@...inx.com>,
        linux-mmc <linux-mmc@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Kishon <kishon@...com>, Vinod Koul <vkoul@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-phy@...ts.infradead.org, Mark Gross <mgross@...ux.intel.com>,
        kris.pan@...ux.intel.com, furong.zhou@...el.com,
        mallikarjunappa.sangannavar@...el.com,
        Adrian Hunter <adrian.hunter@...el.com>,
        mahesh.r.vaidya@...el.com, nandhini.srikandan@...el.com,
        kenchappa.demakkanavar@...el.com
Subject: Re: [PATCH 2/3] mmc: sdhci-of-arasan: Add intel Thunder Bay SOC
 support to the arasan eMMC driver

On Fri, 30 Jul 2021 at 08:33, <rashmi.a@...el.com> wrote:
>
> From: Rashmi A <rashmi.a@...el.com>
>
> Intel Thunder Bay SoC eMMC controller is based on Arasan
> eMMC 5.1 host controller IP
>
> Signed-off-by: Rashmi A <rashmi.a@...el.com>
> Reviewed-by: Adrian Hunter <adrian.hunter@...el.com>

Rashmi, is it safe to apply this separately from the phy driver/dt
changes? Then I can queue this via my mmc tree, if you like.

Kind regards
Uffe

> ---
>  drivers/mmc/host/sdhci-of-arasan.c | 29 ++++++++++++++++++++++++++++-
>  1 file changed, 28 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
> index 839965f7c717..6f202fb7a546 100644
> --- a/drivers/mmc/host/sdhci-of-arasan.c
> +++ b/drivers/mmc/host/sdhci-of-arasan.c
> @@ -185,6 +185,13 @@ static const struct sdhci_arasan_soc_ctl_map intel_lgm_sdxc_soc_ctl_map = {
>         .hiword_update = false,
>  };
>
> +static const struct sdhci_arasan_soc_ctl_map thunderbay_soc_ctl_map = {
> +       .baseclkfreq = { .reg = 0x0, .width = 8, .shift = 14 },
> +       .clockmultiplier = { .reg = 0x4, .width = 8, .shift = 14 },
> +       .support64b = { .reg = 0x4, .width = 1, .shift = 24 },
> +       .hiword_update = false,
> +};
> +
>  static const struct sdhci_arasan_soc_ctl_map intel_keembay_soc_ctl_map = {
>         .baseclkfreq = { .reg = 0x0, .width = 8, .shift = 14 },
>         .clockmultiplier = { .reg = 0x4, .width = 8, .shift = 14 },
> @@ -430,6 +437,15 @@ static const struct sdhci_pltfm_data sdhci_arasan_cqe_pdata = {
>                         SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN,
>  };
>
> +static const struct sdhci_pltfm_data sdhci_arasan_thunderbay_pdata = {
> +       .ops = &sdhci_arasan_cqe_ops,
> +       .quirks = SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN | SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
> +       .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
> +               SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN |
> +               SDHCI_QUIRK2_STOP_WITH_TC |
> +               SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400,
> +};
> +
>  #ifdef CONFIG_PM_SLEEP
>  /**
>   * sdhci_arasan_suspend - Suspend method for the driver
> @@ -1098,6 +1114,12 @@ static struct sdhci_arasan_of_data sdhci_arasan_generic_data = {
>         .clk_ops = &arasan_clk_ops,
>  };
>
> +static const struct sdhci_arasan_of_data sdhci_arasan_thunderbay_data = {
> +       .soc_ctl_map = &thunderbay_soc_ctl_map,
> +       .pdata = &sdhci_arasan_thunderbay_pdata,
> +       .clk_ops = &arasan_clk_ops,
> +};
> +
>  static const struct sdhci_pltfm_data sdhci_keembay_emmc_pdata = {
>         .ops = &sdhci_arasan_cqe_ops,
>         .quirks = SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN |
> @@ -1231,6 +1253,10 @@ static const struct of_device_id sdhci_arasan_of_match[] = {
>                 .compatible = "intel,keembay-sdhci-5.1-sdio",
>                 .data = &intel_keembay_sdio_data,
>         },
> +       {
> +               .compatible = "intel,thunderbay-sdhci-5.1",
> +               .data = &sdhci_arasan_thunderbay_data,
> +       },
>         /* Generic compatible below here */
>         {
>                 .compatible = "arasan,sdhci-8.9a",
> @@ -1582,7 +1608,8 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
>
>         if (of_device_is_compatible(np, "intel,keembay-sdhci-5.1-emmc") ||
>             of_device_is_compatible(np, "intel,keembay-sdhci-5.1-sd") ||
> -           of_device_is_compatible(np, "intel,keembay-sdhci-5.1-sdio")) {
> +           of_device_is_compatible(np, "intel,keembay-sdhci-5.1-sdio") ||
> +           of_device_is_compatible(np, "intel,thunderbay-sdhci-5.1")) {
>                 sdhci_arasan_update_clockmultiplier(host, 0x0);
>                 sdhci_arasan_update_support64b(host, 0x0);
>
> --
> 2.17.1
>