linux-kernel - [PATCH 4.13 66/85] arm64: dts: rockchip: correct vqmmc voltage for rk3399 platforms

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Date:   Tue, 24 Oct 2017 15:07:40 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Shawn Lin <shawn.lin@...k-chips.com>,
        Klaus Goger <klaus.goger@...obroma-systems.com>,
        Heiko Stuebner <heiko@...ech.de>
Subject: [PATCH 4.13 66/85] arm64: dts: rockchip: correct vqmmc voltage for rk3399 platforms

4.13-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Shawn Lin <shawn.lin@...k-chips.com>

commit b31ce3041787b61f2dad39d2dcda5c4a81d10e2b upstream.

The vcc_sd or vcc_sdio used for IO voltage for sdmmc and sdio
interface on rk3399 platform have a limitation that it can't be
larger than 3.0v, otherwise it has a potential risk for the chip.
Correct all of them.

Fixes: 171582e00db1 ("arm64: dts: rockchip: add support for firefly-rk3399 board")
Fixes: 2c66fc34e945 ("arm64: dts: rockchip: add RK3399-Q7 (Puma) SoM")
Fixes: 8164a84cca12 ("arm64: dts: rockchip: Add support for rk3399 sapphire SOM")
Cc: stable@...r.kernel.org
Signed-off-by: Shawn Lin <shawn.lin@...k-chips.com>
Tested-by: Klaus Goger <klaus.goger@...obroma-systems.com>
Signed-off-by: Heiko Stuebner <heiko@...ech.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm64/boot/dts/rockchip/rk3399-firefly.dts |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts
@@ -370,10 +370,10 @@
 				regulator-always-on;
 				regulator-boot-on;
 				regulator-min-microvolt = <1800000>;
-				regulator-max-microvolt = <3300000>;
+				regulator-max-microvolt = <3000000>;
 				regulator-state-mem {
 					regulator-on-in-suspend;
-					regulator-suspend-microvolt = <3300000>;
+					regulator-suspend-microvolt = <3000000>;
 				};
 			};