From: Krzysztof Kozlowski Date: Thu, 14 Mar 2019 20:02:17 +0000 (+0100) Subject: ARM: dts: exynos: Always enable necessary APIO_1V8 and ABB_1V8 regulators on Arndale... X-Git-Tag: v5.1.10~14 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6e63900b7a732e8c6c4e29ef66c819cd66d24b7a;p=thirdparty%2Fkernel%2Fstable.git ARM: dts: exynos: Always enable necessary APIO_1V8 and ABB_1V8 regulators on Arndale Octa [ Upstream commit 5ab99cf7d5e96e3b727c30e7a8524c976bd3723d ] The PVDD_APIO_1V8 (LDO2) and PVDD_ABB_1V8 (LDO8) regulators were turned off by Linux kernel as unused. However they supply critical parts of SoC so they should be always on: 1. PVDD_APIO_1V8 supplies SYS pins (gpx[0-3], PSHOLD), HDMI level shift, RTC, VDD1_12 (DRAM internal 1.8 V logic), pull-up for PMIC interrupt lines, TTL/UARTR level shift, reset pins and SW-TACT1 button. It also supplies unused blocks like VDDQ_SRAM (for SROM controller) and VDDQ_GPIO (gpm7, gpy7). The LDO2 cannot be turned off (S2MPS11 keeps it on anyway) so marking it "always-on" only reflects its real status. 2. PVDD_ABB_1V8 supplies Adaptive Body Bias Generator for ARM cores, memory and Mali (G3D). Signed-off-by: Krzysztof Kozlowski Signed-off-by: Sasha Levin --- diff --git a/arch/arm/boot/dts/exynos5420-arndale-octa.dts b/arch/arm/boot/dts/exynos5420-arndale-octa.dts index 3447160e1fbf0..a0e27e1c0feb8 100644 --- a/arch/arm/boot/dts/exynos5420-arndale-octa.dts +++ b/arch/arm/boot/dts/exynos5420-arndale-octa.dts @@ -107,6 +107,7 @@ regulator-name = "PVDD_APIO_1V8"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; + regulator-always-on; }; ldo3_reg: LDO3 { @@ -145,6 +146,7 @@ regulator-name = "PVDD_ABB_1V8"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; + regulator-always-on; }; ldo9_reg: LDO9 {