linux-kernel - [PATCH 2/2] ARM: dts: exynos: Adjust buck[78] regulators to supported values on Arndale Octa

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Message-Id: <20190629114739.11702-2-krzk@kernel.org>
Date:   Sat, 29 Jun 2019 13:47:39 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Anand Moon <linux.amoon@...il.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] ARM: dts: exynos: Adjust buck[78] regulators to supported values on Arndale Octa

The datasheet of S2MPS11 PMIC is slightly non-consistent in buck[78]
voltage regulators values.

1. The voltage tables for configuring their registers mention range of
   voltages: 0.750 V to 3.55 V,
2. The constrains in electrical specifications say output voltage range
   to be different (buck7: 1.2 V to 1.5 V, buck8: 1.8 V to 2.1 V).

Adjust the ranges to match the electrical specifications to stay on the
safe side.  Anyway these regulators stay at default value so this should
not have effect.

Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 arch/arm/boot/dts/exynos5420-arndale-octa.dts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/exynos5420-arndale-octa.dts b/arch/arm/boot/dts/exynos5420-arndale-octa.dts
index ac7f2fa0ba22..592d7b45ecc8 100644
--- a/arch/arm/boot/dts/exynos5420-arndale-octa.dts
+++ b/arch/arm/boot/dts/exynos5420-arndale-octa.dts
@@ -723,15 +723,15 @@
 
 			buck7_reg: BUCK7 {
 				regulator-name = "VIN_LLDO_1V4";
-				regulator-min-microvolt = <800000>;
+				regulator-min-microvolt = <1200000>;
 				regulator-max-microvolt = <1500000>;
 				regulator-always-on;
 			};
 
 			buck8_reg: BUCK8 {
 				regulator-name = "VIN_MLDO_2V0";
-				regulator-min-microvolt = <800000>;
-				regulator-max-microvolt = <2000000>;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <2100000>;
 				regulator-always-on;
 			};
 
-- 
2.17.1