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c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1791881116; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=HlWri7AEUl4ShGkTU03XLOeSLJjfve9KH8MI83m+Iss=; b=Ev/t7AaE/IuNS078gbfDahWk/bgOuPhbaEfGfQuorkzL+8rWqGenytncK3qu2mV/EFH4bh E8c0RRwqbSDhkX12LlmKrhEo+X3hRdTgg0R+oTOb4KhYlGoQG/dgNtRTTiE+QJTO8eJBsb gFjjqgE3OUnGPcckeuNU95aGs6eb7tuhv8P7/Saudpz0cq0RNXp2EoLBr7gYhT3DbIXCZT CbAp0aOwW2vjPEMz64c5rbPVFxHOOZCD20hqJX4BCHjzzUisa+4L5toqEKLHK1MN0Vaamp HJY5DbkTDfDvv8FE12HDI8oLy9r5efkdhtYPJQEBIzrKv/ECRjKOEw0HWeI3ZA== From: =?UTF-8?B?QmVub8OudA==?= Monin To: Tom Rini Cc: u-boot@lists.u-boot-project.org, Yao Zi , Thomas Petazzoni , Quentin Schulz , Heiko Stuebner , Marek Vasut , Torsten Duwe , Ryan Chen , Guodong Xu , Alexey Charkov , Bastien Curutchet , Johan Jonker , Tim Ouyang , Leo Liang , Jun Chang , Peng Fan , Jaehoon Chung , Bin Liu , Hiago De Franco , Michal Simek , Raymond Mao , Alexander Feilke , Chris Packham , Randolph Sheng-Kai =?UTF-8?B?TGluKOael+iBluWHsSk=?= Subject: Re: [PATCH 06/10] mmc: metanoia_sdhci: Add SDHCI driver for Metanoia MT2824 SoC Date: Tue, 13 Oct 2026 10:45:09 +0200 Message-ID: In-Reply-To: <20261002152935.GV858934@bill-the-cat> References: <20261002-mt2824-v1-0-bc44cf0e0289@bootlin.com> <20261002-mt2824-v1-6-bc44cf0e0289@bootlin.com> <20261002152935.GV858934@bill-the-cat> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" X-Last-TLS-Session-Version: TLSv1.3 X-BeenThere: u-boot@lists.u-boot-project.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.u-boot-project.org On Friday, 2 October 2026 at 17:29:35 CEST, Tom Rini wrote: > On Fri, Oct 02, 2026 at 03:02:24PM +0200, Beno=C3=AEt Monin wrote: >=20 > > Add an SDHCI driver for the DesignWare Mobile Storage Host Controller > > (DWC MSHC) integrated in the Metanoia MT2824 SoC. It supports eMMC up to > > HS400/HS400ES and SD cards, and implements the MMC driver model. > >=20 > > The controller is a DWC MSHC instance, but its PHY programming, > > voltage/speed-mode handling and tuning model are silicon-specific > > and differ from the existing DWC MSHC drivers. > >=20 > > The PHY pad drive strength, receiver select and weak-pull settings > > depend on the card type (eMMC vs SD) and are re-applied on every ios, > > whereas snps_sdhci.c uses fixed pad values. > >=20 > > High-speed modes force 1.8V signalling and HS400 uses an explicit PHY > > DLL lock sequence (set_control_reg()/set_ios_post()), which snps_sdhci.c > > does not implement. > >=20 > > Tuning relies on the generic SDHCI core tuner, whereas snps_sdhci.c uses > > the hardware auto-tuning block. > >=20 > > Keeping a dedicated driver avoids per-variant branches in the shared > > DWC MSHC drivers, matching how snps_sdhci.c, adi_sdhci.c and > > cv1800b_sdhci.c are already split in U-Boot. > >=20 > > Signed-off-by: Beno=C3=AEt Monin > [snip] > > +static const struct udevice_id metanoia_sdhci_ids[] =3D { > > + { .compatible =3D "metanoia,mt2824-dwcmshc" }, > > + { /* sentinel */ } > > +}; >=20 > I don't see this compatible in Linus' tree currently, so what's the > status on upstreaming all of the device tree parts? Thanks. >=20 We are currently preparing a first patch series for Linux, but it has not been posted yet. =2D-=20 Beno=C3=AEt