From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: phucduc.bui@gmail.com
Cc: geert+renesas@glider.be, magnus.damm@gmail.com,
conor+dt@kernel.org, devicetree@vger.kernel.org,
krzk+dt@kernel.org, linux-kernel@vger.kernel.org,
linux-renesas-soc@vger.kernel.org, robh@kernel.org
Subject: Re: [PATCH v2] arm: dts: renesas: r8a7740-armadillo800eva: Enable SDHI1
Date: Mon, 2 Mar 2026 17:45:41 +0100 [thread overview]
Message-ID: <aaW-tf_lagkvPnq4@shikoro> (raw)
In-Reply-To: <20260224074532.60046-1-phucduc.bui@gmail.com>
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On Tue, Feb 24, 2026 at 02:45:32PM +0700, phucduc.bui@gmail.com wrote:
> From: bui duc phuc <phucduc.bui@gmail.com>
>
> The Armadillo-800EVA board provides an SD card slot and an AWL13 SDIO
> interface connected to the SDHI1 controller. Routing between these two
> interfaces is controlled by a mechanical DIP switch and a set of
> multiplexers.
>
> This patch adds:
>
> - A fixed 3.3V regulator for SDHI1 power, controlled by PORT16 (G2).
> - SDHI1 pinmux groups for data, control, and card detection.
> - A gpio-hog for PORT6 (J5) to control the SDHI1/AWLAN multiplexer.
>
> PORT176 (N21) is already configured as output-high in this DTS (via
> lcd0-mux-hog), routing the SDSLOT2_ENABLE signal to PORT6. Since the
> hardware includes an external 10k pull-up resistor (R94) on this line,
> PORT6 is configured as an input to allow the physical DIP switch to
> determine the routing without SoC interference.
>
> Both configurations have been verified:
>
> - SD card (CON8): detected as mmcblk1, high-speed SDHC.
> - SDIO (CON14): detected as mmc1, high-speed SDIO.
>
> Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
I don't have any schematics for the Armadillo, but the SDHI parts here
look good to me.
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
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next prev parent reply other threads:[~2026-03-02 16:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-12 7:38 [PATCH] arm: dts: renesas: r8a7740-armadillo800eva: Enable SDHI1 phucduc.bui
2026-02-20 0:43 ` [PATCH] ARM: dts: renesas: r8a7740-armadillo800eva: Enable phucduc.bui
2026-02-24 7:45 ` [PATCH v2] arm: dts: renesas: r8a7740-armadillo800eva: Enable SDHI1 phucduc.bui
2026-03-02 16:45 ` Wolfram Sang [this message]
2026-03-03 13:12 ` phucduc.bui
2026-03-13 9:39 ` Geert Uytterhoeven
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