linux-kernel - Re: [PATCH v2 2/4] dt-bindings: mmc: Add support for BCM2712 SD host controller

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Date: Fri, 10 May 2024 21:01:33 +0200
From: Stefan Wahren <wahrenst@....net>
To: Andrea della Porta <andrea.porta@...e.com>, Rob Herring
 <robh@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>,
 Florian Fainelli <florian.fainelli@...adcom.com>, Ray Jui
 <rjui@...adcom.com>, Scott Branden <sbranden@...adcom.com>,
 Broadcom internal kernel review list
 <bcm-kernel-feedback-list@...adcom.com>, Ulf Hansson
 <ulf.hansson@...aro.org>, Adrian Hunter <adrian.hunter@...el.com>,
 Kamal Dasu <kamal.dasu@...adcom.com>, Al Cooper <alcooperx@...il.com>,
 Eric Anholt <eric@...olt.net>, devicetree@...r.kernel.org,
 linux-rpi-kernel@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org
Subject: Re: [PATCH v2 2/4] dt-bindings: mmc: Add support for BCM2712 SD host
 controller

Hi Andrea,

please drop E. Anholt from the recipients. AFAIK she is not interested
in kernel development anymore.

Am 10.05.24 um 16:35 schrieb Andrea della Porta:
> The BCM2712 has an SDHCI capable host interface similar to the one found
> in other STB chipsets. Add the relevant compatible string and relative
> example.
>
> Signed-off-by: Andrea della Porta <andrea.porta@...e.com>
> ---
>   .../bindings/mmc/brcm,sdhci-brcmstb.yaml      | 23 +++++++++++++++++++
>   1 file changed, 23 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml b/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml
> index cbd3d6c6c77f..404b75fa7adb 100644
> --- a/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml
> +++ b/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml
> @@ -13,6 +13,10 @@ maintainers:
>   properties:
>     compatible:
>       oneOf:
> +      - items:
> +          - enum:
> +              - brcm,bcm2712-sdhci
> +          - const: brcm,sdhci-brcmstb
>         - items:
>             - enum:
>                 - brcm,bcm7216-sdhci
> @@ -114,3 +118,22 @@ examples:
>         clocks = <&scmi_clk 245>;
>         clock-names = "sw_sdio";
>       };
> +
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    soc {
> +      #address-cells = <2>;
> +      #size-cells = <2>;
Would be nice to have a short explanation in the commit message why this
is necessary.
> +
> +      mmc@...0fff000 {
> +        compatible = "brcm,bcm2712-sdhci",
> +                     "brcm,sdhci-brcmstb";
> +        reg = <0x10 0x00fff000  0x0 0x260>,
> +              <0x10 0x00fff400  0x0 0x200>;
> +        reg-names = "host", "cfg";
> +        mmc-ddr-3_3v;
> +        interrupts = <GIC_SPI 0x111 IRQ_TYPE_LEVEL_HIGH>;
> +        clocks = <&clk_emmc2>;
> +        clock-names = "sw_sdio";
> +      };
> +    };