From: avinashphilip@ti.com (Philip, Avinash)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 00/10] Support for AM33xx PWM Subsystem
Date: Tue, 20 Nov 2012 10:33:41 +0530 [thread overview]
Message-ID: <1353387831-31538-1-git-send-email-avinashphilip@ti.com> (raw)
In AM33xx PWM sub modules like ECAP, EHRPWM & EQEP are integrated to
PWM subsystem. All these submodules shares the resources (clock) & has
a clock gating register in PWM Subsystem. This patch series creates a
parent PWM Subsystem driver to handle access synchronization of shared
resources & clock gating from PWM Subsystem configuration space.
Also Device tree nodes populated to support parent child relation
between PWMSS, ECAP & EHRPWM submodules.
In addition EHRPWM module requires explicit clock gating from control
module & is handled by patch #2 & 8.
Patch #4 & 6 submitted is a second revision as suggested by Thierry
for handling clock gating with a global function . This requires config
space handling done independent from driver and is done at parent driver.
So the parent<->child relation adopted to handle
1. pm runtime synchronization
2. PWM subsystem common config space clock gating for PWM submodules.
Patches supports
- Driver support for parent child relation handled patch #1
- Optional EHRPWM tb clock in patch #2
- Parent child in HWMOD handled at patch #3
- Device tree binding support handled in patch #4, 6 &8
- pinctrl support in patch #5 & 7.
- DT node populated in patch #9 & 10.
This patch series based on linux-next/20121115 and tested on AM33xx.
It depends on [1]
1. https://lkml.org/lkml/2012/11/19/338
pwm: Device tree support for PWM polarity
Philip, Avinash (10):
PWMSS: Add PWM Subsystem driver for parent<->child relationship
ARM: am33xx: clk: Add optional clock for EHRPWM
ARM: OMAP: AM33xx hwmod: Add parent-child relationship for PWM
subsystem
pwm: pwm-tiecap: Add device-tree binding support for APWM driver
pwm: pwm-tiecap: pinctrl support
pwm: pwm-tiehrpwm: Add device-tree binding support for EHRPWM driver
pwm: pwm-tiehrpwm: pinctrl support
pwm: pwm-tiehrpwm: Adding TBCLK gating support.
ARM: dts: AM33XX: Add PWMSS device tree nodes
ARM: dts: AM33XX: Add PWM backlight DT data to am335x-evm
.../devicetree/bindings/pwm/pwm-tiecap.txt | 23 ++
.../devicetree/bindings/pwm/pwm-tiehrpwm.txt | 23 ++
.../devicetree/bindings/pwm/pwm-tipwmss.txt | 32 ++
arch/arm/boot/dts/am335x-evm.dts | 21 +
arch/arm/boot/dts/am33xx.dtsi | 84 ++++
arch/arm/mach-omap2/clock33xx_data.c | 37 ++
arch/arm/mach-omap2/control.h | 8 +
arch/arm/mach-omap2/omap_hwmod_33xx_data.c | 419 +++++++++++++-------
drivers/pwm/Kconfig | 11 +
drivers/pwm/Makefile | 1 +
drivers/pwm/pwm-tiecap.c | 50 +++-
drivers/pwm/pwm-tiehrpwm.c | 65 +++-
drivers/pwm/pwm-tipwmss.c | 143 +++++++
drivers/pwm/tipwmss.h | 39 ++
14 files changed, 811 insertions(+), 145 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pwm/pwm-tiecap.txt
create mode 100644 Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt
create mode 100644 Documentation/devicetree/bindings/pwm/pwm-tipwmss.txt
create mode 100644 drivers/pwm/pwm-tipwmss.c
create mode 100644 drivers/pwm/tipwmss.h
next reply other threads:[~2012-11-20 5:03 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-20 5:03 Philip, Avinash [this message]
2012-11-20 5:03 ` [PATCH v3 01/10] PWMSS: Add PWM Subsystem driver for parent<->child relationship Philip, Avinash
2012-11-20 5:03 ` [PATCH v3 02/10] ARM: am33xx: clk: Add optional clock for EHRPWM Philip, Avinash
2012-11-23 11:03 ` Philip, Avinash
2012-11-20 5:03 ` [PATCH v3 03/10] ARM: OMAP: AM33xx hwmod: Add parent-child relationship for PWM subsystem Philip, Avinash
2012-11-23 11:06 ` Philip, Avinash
2012-11-26 5:19 ` Bedia, Vaibhav
2012-11-26 9:02 ` Benoit Cousson
2012-11-26 11:07 ` Bedia, Vaibhav
2012-11-27 6:24 ` Philip, Avinash
2012-11-20 5:03 ` [PATCH v3 04/10] pwm: pwm-tiecap: Add device-tree binding support for APWM driver Philip, Avinash
2012-11-20 5:03 ` [PATCH v3 05/10] pwm: pwm-tiecap: pinctrl support Philip, Avinash
2012-11-20 5:03 ` [PATCH v3 06/10] pwm: pwm-tiehrpwm: Add device-tree binding support for EHRPWM driver Philip, Avinash
2012-11-20 5:03 ` [PATCH v3 07/10] pwm: pwm-tiehrpwm: pinctrl support Philip, Avinash
2012-11-20 5:03 ` [PATCH v3 08/10] pwm: pwm-tiehrpwm: Adding TBCLK gating support Philip, Avinash
2012-11-20 5:03 ` [PATCH v3 09/10] ARM: dts: AM33XX: Add PWMSS device tree nodes Philip, Avinash
2012-11-20 5:03 ` [PATCH v3 10/10] ARM: dts: AM33XX: Add PWM backlight DT data to am335x-evm Philip, Avinash
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