From 28ef26ad2b47e4e69d5c10e30c86925025456b18 Mon Sep 17 00:00:00 2001 From: Francesco Dolcini Date: Mon, 17 Apr 2023 14:27:36 +0200 Subject: arm64: dts: ti: k3-am625-verdin-dev: use PMIC LDO2 as VDDR_CORE The decision is to use PMIC LDO2 as a dedicate supply for SOC +VDDR_CORE, +VDDR_CORE must be 0.85V and with this change we could have +VDD_CORE set to 0.75V instead of 0.85V for lower end SKU allowing for some power saving. Set also +VDDR_CORE as always-on and boot-on, as this power supply should be always on. DSI bridge PMIC will be always powered by a dedicated LDO. Upstream-Status: Pending Initial DTS to be used for bring-up an validation of the V1.0 design, we'll decide on the step forward to mainline this once the bring-up and validation will be done. Signed-off-by: Francesco Dolcini --- arch/arm64/boot/dts/ti/k3-am625-verdin.dtsi | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/arm64/boot/dts/ti/k3-am625-verdin.dtsi b/arch/arm64/boot/dts/ti/k3-am625-verdin.dtsi index a9a3b5dcf5db..11160e6d1d76 100644 --- a/arch/arm64/boot/dts/ti/k3-am625-verdin.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am625-verdin.dtsi @@ -1143,10 +1143,12 @@ regulator-name = "+V3.3_1.8_SD (PMIC LDO1)"; }; - ldo2 { - regulator-max-microvolt = <1200000>; - regulator-min-microvolt = <1200000>; - regulator-name = "+VLDO2 (PMIC LDO2)"; + reg_vddr_core: ldo2 { + regulator-always-on; + regulator-boot-on; + regulator-max-microvolt = <850000>; + regulator-min-microvolt = <850000>; + regulator-name = "+VDDR_CORE (PMIC LDO2)"; }; reg_1v8a: ldo3 { -- cgit v1.2.3