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Sun, 10 Nov 2019 16:52:18 -0800 (PST) From: Kever Yang To: heiko@sntech.de Subject: [PATCH 1/3] arm64: dts: rockchip: Fix min voltage for rk3399-firefly vdd_log Date: Mon, 11 Nov 2019 08:51:56 +0800 Message-Id: <20191111005158.25070-1-kever.yang@rock-chips.com> X-Mailer: git-send-email 2.17.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191110_165223_462403_FDD34405 X-CRM114-Status: GOOD ( 10.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Kever Yang , linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Rob Herring , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org The min/max value of vdd_log is decide by pwm IO voltage and its resistors, the rk3399-firefly board's pwm regulator circuit is designed for IO voltage at 1.8V, while the board actually use 3.0V for IO, which at last lead to the min-microvolt to '430mV' instead of '800mV'. Signed-off-by: Kever Yang --- arch/arm64/boot/dts/rockchip/rk3399-firefly.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts b/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts index c706db0ee9ec..92de83dd4dbc 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts +++ b/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts @@ -206,7 +206,7 @@ regulator-name = "vdd_log"; regulator-always-on; regulator-boot-on; - regulator-min-microvolt = <800000>; + regulator-min-microvolt = <430000>; regulator-max-microvolt = <1400000>; vin-supply = <&vcc_sys>; }; -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel