linux-kernel - Re: [PATCH] ARM: dts: bcm2711: Use bcm2711 compatible for sdhci

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Message-ID: <936f10bbeca467ea8ebc669280a50c688730689d.camel@suse.de>
Date:   Mon, 20 Jan 2020 12:03:51 +0100
From:   Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
To:     Stephen Brennan <stephen@...nnan.io>
Cc:     Mark Rutland <mark.rutland@....com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        bcm-kernel-feedback-list@...adcom.com,
        linux-arm-kernel@...ts.infradead.org,
        linux-rpi-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM: dts: bcm2711: Use bcm2711 compatible for sdhci

Hi Stephen,

On Sun, 2020-01-19 at 20:17 -0800, Stephen Brennan wrote:
> When booting Raspberry Pi 4B using a micro SDHC UHS class 1 card, the SD
> card partitions never appear in /dev.  According to the device tree
> bindings for Broadcom IPROC SDHCI controller, we should use
> "brcm,bcm2711-emmc2" compatible string on BCM2711. Set this compatible
> string, which allows these cards to be mounted.
> 
> Signed-off-by: Stephen Brennan <stephen@...nnan.io>

Your UHS class 1 card should work out of the box using the current kernel
version. Note that the device node is defined here:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/bcm2711.dtsi?h=v5.5-rc7#n255

and enabled here:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/bcm2711-rpi-4-b.dts?h=v5.5-rc7#n98

Regards,
Nicolas


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