From bd77d0ad7a698f5e04edf02328d11e808a71d87c Mon Sep 17 00:00:00 2001 From: Jagan Teki Date: Wed, 19 Aug 2020 00:15:05 +0530 Subject: arm64: dts: rockchip: Fix power routing to support POE on rk3399-roc-pc When POE used, the current power routing is failing to power-up the PMIC regulators which cause Linux boot hangs. This patch is trying to update the power routing in order to support Type C0 and POE powering methods. As per the schematics, sys_12v is a common output power regulator when type c and POE power being used. sys_12v is supplied by dc_12v which is supplied from MP8859 in type c0 power routing and sys_12v is supplied by MP8009 PoE PD in POE power supply routing. Signed-off-by: Jagan Teki Tested-by: Suniel Mahesh Link: https://lore.kernel.org/r/20200818184505.30064-1-jagan@amarulasolutions.com Signed-off-by: Heiko Stuebner --- .../boot/dts/rockchip/rk3399-roc-pc-mezzanine.dts | 18 ++++++++++++++++-- arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi | 12 ++++++++++-- 2 files changed, 26 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc-mezzanine.dts b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc-mezzanine.dts index 2acb3d500fb9..754627d97144 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc-mezzanine.dts +++ b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc-mezzanine.dts @@ -11,6 +11,16 @@ model = "Firefly ROC-RK3399-PC Mezzanine Board"; compatible = "firefly,roc-rk3399-pc-mezzanine", "rockchip,rk3399"; + /* MP8009 PoE PD */ + poe_12v: poe-12v { + compatible = "regulator-fixed"; + regulator-name = "poe_12v"; + regulator-always-on; + regulator-boot-on; + regulator-min-microvolt = <12000000>; + regulator-max-microvolt = <12000000>; + }; + vcc3v3_ngff: vcc3v3-ngff { compatible = "regulator-fixed"; regulator-name = "vcc3v3_ngff"; @@ -22,7 +32,7 @@ regulator-boot-on; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; - vin-supply = <&dc_12v>; + vin-supply = <&sys_12v>; }; vcc3v3_pcie: vcc3v3-pcie { @@ -34,10 +44,14 @@ pinctrl-0 = <&vcc3v3_pcie_en>; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; - vin-supply = <&dc_12v>; + vin-supply = <&sys_12v>; }; }; +&sys_12v { + vin-supply = <&poe_12v>; +}; + &pcie_phy { status = "okay"; }; diff --git a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi index b85ec31cd283..e7a459fa4322 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi @@ -110,6 +110,14 @@ regulator-max-microvolt = <5000000>; }; + sys_12v: sys-12v { + compatible = "regulator-fixed"; + regulator-name = "sys_12v"; + regulator-always-on; + regulator-boot-on; + vin-supply = <&dc_12v>; + }; + /* switched by pmic_sleep */ vcc1v8_s3: vcca1v8_s3: vcc1v8-s3 { compatible = "regulator-fixed"; @@ -141,7 +149,7 @@ regulator-boot-on; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; - vin-supply = <&dc_12v>; + vin-supply = <&sys_12v>; }; vcca_0v9: vcca-0v9 { @@ -186,7 +194,7 @@ regulator-boot-on; regulator-min-microvolt = <5000000>; regulator-max-microvolt = <5000000>; - vin-supply = <&dc_12v>; + vin-supply = <&sys_12v>; }; vdd_log: vdd-log { -- cgit v1.2.3