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From:   Heiko Stuebner <heiko@sntech.de>
To:     Chen-Yu Tsai <wens@csie.org>,
        Jernej Skrabec <jernej.skrabec@gmail.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        linux-arm-kernel@lists.infradead.org
Cc:     Samuel Holland <samuel@sholland.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Maxime Ripard <mripard@kernel.org>, Ondrej Jirman <x@xff.cz>,
        Rob Herring <robh+dt@kernel.org>, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev,
        Samuel Holland <samuel@sholland.org>
Subject: Re: [PATCH 3/6] pinctrl: sunxi: Support the 2.5V I/O bias mode
Date:   Fri, 01 Jul 2022 15:04:40 +0200
Message-ID: <9219098.18pcnM708K@phil>
In-Reply-To: <20220626021148.56740-4-samuel@sholland.org>
References: <20220626021148.56740-1-samuel@sholland.org> <20220626021148.56740-4-samuel@sholland.org>
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Am Sonntag, 26. Juni 2022, 04:11:44 CEST schrieb Samuel Holland:
> H616 and newer SoCs feature a 2.5V I/O bias mode in addition to the
> 1.8V and 3.3V modes. This mode is entered by selecting the 3.3V level
> and disabling the "withstand function".
> 
> H616 supports this capability on its main PIO only. A100 supports this
> capability on both its PIO and R-PIO.
> 
> Signed-off-by: Samuel Holland <samuel@sholland.org>

On a D1-Nezha
Tested-by: Heiko Stuebner <heiko@sntech.de>