On Fri, Apr 28, 2023 at 6:00 AM Julien Panis <jpanis@xxxxxxxxxxxx> wrote: > > From: Lokesh Vutla <lokeshvutla@xxxxxx> > > Add a new am335x-boneblack-pps.dts that can be used to configure TIMER7 > in PWM mode. This PWM signal can be used as a PPS signal when > synchronized to PTP clock. Typically this synchronization is done by a > userspace program. This PPS signal can be observed on pin P8.8. > > Signed-off-by: Lokesh Vutla <lokeshvutla@xxxxxx> > Signed-off-by: Vignesh Raghavendra <vigneshr@xxxxxx> > Signed-off-by: Adrien Ricciardi <aricciardi@xxxxxxxxxxxx> > Signed-off-by: Julien Panis <jpanis@xxxxxxxxxxxx> > --- > arch/arm/boot/dts/Makefile | 1 + > arch/arm/boot/dts/am335x-boneblack-pps.dts | 25 ++++++++++++++++++++++ > 2 files changed, 26 insertions(+) > create mode 100644 arch/arm/boot/dts/am335x-boneblack-pps.dts > > diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile > index efe4152e5846..d74158aae72d 100644 > --- a/arch/arm/boot/dts/Makefile > +++ b/arch/arm/boot/dts/Makefile > @@ -939,6 +939,7 @@ dtb-$(CONFIG_SOC_AM33XX) += \ > am335x-base0033.dtb \ > am335x-bone.dtb \ > am335x-boneblack.dtb \ > + am335x-boneblack-pps.dtb \ > am335x-boneblack-wireless.dtb \ > am335x-boneblue.dtb \ > am335x-bonegreen.dtb \ > diff --git a/arch/arm/boot/dts/am335x-boneblack-pps.dts b/arch/arm/boot/dts/am335x-boneblack-pps.dts > new file mode 100644 > index 000000000000..88d2bc3fd759 > --- /dev/null > +++ b/arch/arm/boot/dts/am335x-boneblack-pps.dts > @@ -0,0 +1,25 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (C) 2023 Texas Instruments Incorporated - http://www.ti.com/ > + */ > + > +#include "am335x-boneblack.dts" > + > +&am33xx_pinmux { > + pwm7_pins: pinmux_pwm7_pins { > + pinctrl-single,pins = < > + AM33XX_PADCONF(AM335X_PIN_GPMC_OEN_REN, PIN_OUTPUT_PULLDOWN, MUX_MODE2) > + >; > + }; > +}; > + > +/{ > + pwm7: dmtimer-pwm7 { > + compatible = "ti,omap-dmtimer-pwm"; > + pinctrl-names = "default"; > + pinctrl-0 = <&pwm7_pins>; > + #pwm-cells = <3>; > + ti,timers = <&timer7>; > + ti,clock-source = <0x00>; /* timer_sys_ck */ > + }; > +}; I know this commit is pretty small, but mainline now has overlay support: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0fff0e49d72a53c51d8903fbadb2e6a84e531c4a At what point do we finally merge in the many dozen *BeagleBone* overlays, or do we still wait for : https://lore.kernel.org/lkml/20220328000915.15041-1-ansuelsmth@xxxxxxxxx/ Regards, -- Robert Nelson https://rcn-ee.com/
