| Message ID | 1394630079-12063-1-git-send-email-mporter@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 03/12/2014 08:14 AM, Matt Porter wrote: > The BCM28155-AP board has a bootloader that expects the camldo1 > regulator to be enabled on entry. Currently, the camldo1 regulator > is disabled when no longer in use as is the case during a reboot / > warm reset. This causes the early bootloader to hang upon entry. Add > regulator-always-on to the camldo1 constraint to fix reboot. > > Reported-by: Alex Elder <elder@linaro.org> > Signed-off-by: Matt Porter <mporter@linaro.org> Tested-by: Alex Elder <elder@linaro.org> > --- > [Depends on BCM59056 regulator series dts support: > http://www.gossamer-threads.com/lists/linux/kernel/1885489] > > arch/arm/boot/dts/bcm28155-ap.dts | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/boot/dts/bcm28155-ap.dts b/arch/arm/boot/dts/bcm28155-ap.dts > index 99ff0c1..cc1303c 100644 > --- a/arch/arm/boot/dts/bcm28155-ap.dts > +++ b/arch/arm/boot/dts/bcm28155-ap.dts > @@ -94,6 +94,7 @@ > camldo1_reg: camldo1 { > regulator-min-microvolt = <3300000>; > regulator-max-microvolt = <3300000>; > + regulator-always-on; > }; > > sdldo_reg: sdldo { >
On Wed, Mar 12, 2014 at 09:14:39AM -0400, Matt Porter wrote: > The BCM28155-AP board has a bootloader that expects the camldo1 > regulator to be enabled on entry. Currently, the camldo1 regulator > is disabled when no longer in use as is the case during a reboot / > warm reset. This causes the early bootloader to hang upon entry. Add > regulator-always-on to the camldo1 constraint to fix reboot. > > Reported-by: Alex Elder <elder@linaro.org> > Signed-off-by: Matt Porter <mporter@linaro.org> > --- > [Depends on BCM59056 regulator series dts support: > http://www.gossamer-threads.com/lists/linux/kernel/1885489] Applied to mach-bcm armsoc/for-3.15/dt -Matt
diff --git a/arch/arm/boot/dts/bcm28155-ap.dts b/arch/arm/boot/dts/bcm28155-ap.dts index 99ff0c1..cc1303c 100644 --- a/arch/arm/boot/dts/bcm28155-ap.dts +++ b/arch/arm/boot/dts/bcm28155-ap.dts @@ -94,6 +94,7 @@ camldo1_reg: camldo1 { regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; + regulator-always-on; }; sdldo_reg: sdldo {
The BCM28155-AP board has a bootloader that expects the camldo1 regulator to be enabled on entry. Currently, the camldo1 regulator is disabled when no longer in use as is the case during a reboot / warm reset. This causes the early bootloader to hang upon entry. Add regulator-always-on to the camldo1 constraint to fix reboot. Reported-by: Alex Elder <elder@linaro.org> Signed-off-by: Matt Porter <mporter@linaro.org> --- [Depends on BCM59056 regulator series dts support: http://www.gossamer-threads.com/lists/linux/kernel/1885489] arch/arm/boot/dts/bcm28155-ap.dts | 1 + 1 file changed, 1 insertion(+)