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[82.243.161.21]) by smtp.googlemail.com with ESMTPSA id t130sm3455416wme.39.2017.08.04.11.08.34 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 04 Aug 2017 11:08:36 -0700 (PDT) From: Jerome Brunet To: Kevin Hilman , Carlo Caione Cc: Jerome Brunet , linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/6] ARM64: dts: meson-gxl: libretech-cc: add card regulator settle times Date: Fri, 4 Aug 2017 20:08:12 +0200 Message-Id: <20170804180816.18737-3-jbrunet@baylibre.com> X-Mailer: git-send-email 2.9.4 In-Reply-To: <20170804180816.18737-1-jbrunet@baylibre.com> References: <20170804180816.18737-1-jbrunet@baylibre.com> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Changing the card voltage on the cc is not instantaneous, especially when switching from 3.3v to 1.8v. It take at least 30ms for the regulator to go from 3.3v to 1.8v. Add margin to that to make sure we don't upset the sdcard during the voltage switch Fixes: 61ff2af9b278 ("ARM64: dts: fixup libretech cc definition") Signed-off-by: Jerome Brunet --- arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts | 3 +++ 1 file changed, 3 insertions(+) -- 2.9.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts index 51c4ecc3b31e..185d737f1549 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts +++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts @@ -92,6 +92,9 @@ states = <3300000 0>, <1800000 1>; + + regulator-settling-time-up-us = <200>; + regulator-settling-time-down-us = <50000>; }; vddio_boot: regulator-vddio_boot {