From: Conor Dooley <conor@kernel.org>
To: Iker Pedrosa <ikerpedrosam@gmail.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Paul Walmsley <pjw@kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Alexandre Ghiti <alex@ghiti.fr>, Yixun Lan <dlan@kernel.org>,
Troy Mitchell <troy.mitchell@linux.dev>,
Michael Opdenacker <michael.opdenacker@rootcommit.com>,
Javier Martinez Canillas <javierm@redhat.com>,
linux-mmc@vger.kernel.org, devicetree@vger.kernel.org,
linux-riscv@lists.infradead.org, spacemit@lists.linux.dev,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v7 1/9] dt-bindings: mmc: spacemit,sdhci: add pinctrl support for voltage switching
Date: Mon, 13 Apr 2026 16:43:05 +0100 [thread overview]
Message-ID: <20260413-marry-discover-e8357e12cf50@spud> (raw)
In-Reply-To: <20260413-orangepi-sd-card-uhs-v7-1-16650f49c022@gmail.com>
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On Mon, Apr 13, 2026 at 09:24:43AM +0200, Iker Pedrosa wrote:
> Document pinctrl properties to support voltage-dependent pin
> configuration switching for UHS-I SD card modes.
>
> Add optional pinctrl-names property with two states:
> - "default": For 3.3V operation with standard drive strength
> - "state_uhs": For 1.8V operation with optimized drive strength
>
> These pinctrl states allow the SDHCI driver to coordinate voltage
> switching with pin configuration changes, ensuring proper signal
> integrity during UHS-I mode transitions.
>
> Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
pw-bot: not-applicable
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next prev parent reply other threads:[~2026-04-13 15:43 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20260413-orangepi-sd-card-uhs-v7-0-16650f49c022@gmail.com>
2026-04-13 7:24 ` [PATCH v7 1/9] dt-bindings: mmc: spacemit,sdhci: add pinctrl support for voltage switching Iker Pedrosa
2026-04-13 15:43 ` Conor Dooley [this message]
2026-04-13 7:24 ` [PATCH v7 2/9] mmc: sdhci-of-k1: enable essential clock infrastructure for SD operation Iker Pedrosa
2026-04-13 7:24 ` [PATCH v7 3/9] mmc: sdhci-of-k1: add regulator and pinctrl voltage switching support Iker Pedrosa
2026-04-13 7:24 ` [PATCH v7 4/9] mmc: sdhci-of-k1: add comprehensive SDR tuning support Iker Pedrosa
2026-04-13 7:24 ` [PATCH v7 5/9] riscv: dts: spacemit: k1: add SD card controller and pinctrl support Iker Pedrosa
2026-04-13 7:24 ` [PATCH v7 6/9] riscv: dts: spacemit: k1-orangepi-rv2: add PMIC and power infrastructure Iker Pedrosa
2026-04-13 7:24 ` [PATCH v7 7/9] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes Iker Pedrosa
2026-04-13 7:24 ` [PATCH v7 8/9] riscv: dts: spacemit: k1-bananapi-f3: " Iker Pedrosa
2026-04-13 7:24 ` [PATCH v7 9/9] riscv: dts: spacemit: k1-musepi-pro: " Iker Pedrosa
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