From 0f4effb05b275f36c490673313317cfe897c9b79 Mon Sep 17 00:00:00 2001 From: Dario Binacchi Date: Wed, 30 Dec 2020 00:16:25 +0100 Subject: [PATCH] bus: ti: am33xx: add pwm subsystem driver The TI PWMSS driver is a simple bus driver for providing clock and power management for the PWM peripherals on TI AM33xx SoCs, namely eCAP, eHRPWM and eQEP. For DT binding details see Linux doc: - Documentation/devicetree/bindings/pwm/pwm-tipwmss.txt Signed-off-by: Dario Binacchi --- drivers/bus/Kconfig | 6 ++++++ drivers/bus/Makefile | 1 + drivers/bus/ti-pwmss.c | 21 +++++++++++++++++++++ 3 files changed, 28 insertions(+) create mode 100644 drivers/bus/ti-pwmss.c diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig index 733bec5a56..d742ed333b 100644 --- a/drivers/bus/Kconfig +++ b/drivers/bus/Kconfig @@ -5,6 +5,12 @@ menu "Bus devices" +config TI_PWMSS + bool + default y if ARCH_OMAP2PLUS && PWM_TI_EHRPWM + help + PWM Subsystem driver support for AM33xx SOC. + config TI_SYSC bool "TI sysc interconnect target module driver" depends on ARCH_OMAP2PLUS diff --git a/drivers/bus/Makefile b/drivers/bus/Makefile index 875bb4ed42..a2e71c7b3b 100644 --- a/drivers/bus/Makefile +++ b/drivers/bus/Makefile @@ -3,5 +3,6 @@ # Makefile for the bus drivers. # +obj-$(CONFIG_TI_PWMSS) += ti-pwmss.o obj-$(CONFIG_TI_SYSC) += ti-sysc.o obj-$(CONFIG_UNIPHIER_SYSTEM_BUS) += uniphier-system-bus.o diff --git a/drivers/bus/ti-pwmss.c b/drivers/bus/ti-pwmss.c new file mode 100644 index 0000000000..265b4cf83b --- /dev/null +++ b/drivers/bus/ti-pwmss.c @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Pulse-Width Modulation Subsystem (pwmss) + * + * Copyright (C) 2020 Dario Binacchi + */ + +#include +#include + +static const struct udevice_id ti_pwmss_ids[] = { + {.compatible = "ti,am33xx-pwmss"}, + {} +}; + +U_BOOT_DRIVER(ti_pwmss) = { + .name = "ti_pwmss", + .id = UCLASS_SIMPLE_BUS, + .of_match = ti_pwmss_ids, + .bind = dm_scan_fdt_dev, +};