| Message ID | 1374079538-19548-9-git-send-email-nm@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/arch/arm/boot/dts/omap5-uevm.dts b/arch/arm/boot/dts/omap5-uevm.dts index 3ff5874..ef05676 100644 --- a/arch/arm/boot/dts/omap5-uevm.dts +++ b/arch/arm/boot/dts/omap5-uevm.dts @@ -397,10 +397,10 @@ ldo7_reg: ldo7 { /* VDD_VPP: vpp1 */ regulator-name = "ldo7"; - regulator-min-microvolt = <1500000>; - regulator-max-microvolt = <1500000>; - regulator-always-on; - regulator-boot-on; + regulator-min-microvolt = <2000000>; + regulator-max-microvolt = <2000000>; + /* Only for efuse reprograming! */ + status = "disabled"; }; ldo8_reg: ldo8 {
commit e00c27ef3b4c23e39d0a77b7c8e5be44c28001c7 (ARM: dts: OMAP5: Add Palmas MFD node and regulator nodes) introduced regulator entries for OMAP5uEVM. However, The regulator information is based on an older temporary pre-production board variant and does not reflect production board 750-2628-XXX boards. LDO4 supplies VDD_VPP which is vpp1. This is currently configured for 1.5V which as per data manual "A pulse width of 1000 ns and an amplitude of 2V is required to program each eFuse bit. Otherwise, VPP1 must not be supplied". So, fix the voltage to 2V. and disable the supply since we have no plans of programming efuse bits - it can only be done once - in factory. Further it is not enabled by default by PMIC so, 'boot-on' must be removed, and the 'always-on' needs to be removed to achieve pulsing if efuse needs to be programmed. Reported-by: Marc Jüttner <m-juettner@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> --- arch/arm/boot/dts/omap5-uevm.dts | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)