Messages in this thread Patch in this message | | | From | Nishanth Menon <> | Subject | [PATCH] ARM: dts: am57xx-beagle-x15: Update Phy supplies | Date | Thu, 3 Sep 2015 14:23:45 -0500 |
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Originally, all the SoC PHY rails were supplied by LDO3. However, as a result of characterization, it was determined that this posed a risk in extreme load conditions. Hence the PHY rails are split between two different LDOs. Update the related node as a result
LDO3/VDDA_1V8_PHYA supplies vdda_usb1, vdda_usb2, vdda_sata, vdda_usb3 LDO4/VDDA_1V8_PHYB supplies vdda_pcie1, vdda_pcie0, vdda_hdmi, vdda_pcie
NOTE: We break compatibility with pre-production boards with this change since, the PMIC LDO4 is disabled at OTP level.
The new configuration is the plan of record and all pre-production boards are supposed to be replaced with the latest boards matching the mentioned configuration.
Signed-off-by: Nishanth Menon <nm@ti.com> --- arch/arm/boot/dts/am57xx-beagle-x15.dts | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/am57xx-beagle-x15.dts b/arch/arm/boot/dts/am57xx-beagle-x15.dts index 3a05b94f59ed..ede7fb73c717 100644 --- a/arch/arm/boot/dts/am57xx-beagle-x15.dts +++ b/arch/arm/boot/dts/am57xx-beagle-x15.dts @@ -432,7 +432,7 @@ }; ldo3_reg: ldo3 { - /* VDDA_1V8_PHY */ + /* VDDA_1V8_PHYA */ regulator-name = "ldo3"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; @@ -440,6 +440,15 @@ regulator-boot-on; }; + ldo4_reg: ldo4 { + /* VDDA_1V8_PHYB */ + regulator-name = "ldo4"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-always-on; + regulator-boot-on; + }; + ldo9_reg: ldo9 { /* VDD_RTC */ regulator-name = "ldo9"; @@ -681,7 +690,7 @@ &hdmi { status = "ok"; - vdda-supply = <&ldo3_reg>; + vdda-supply = <&ldo4_reg>; pinctrl-names = "default"; pinctrl-0 = <&hdmi_pins>; -- 1.7.9.5
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