[PATCH v2 0/5] add mxc driver for i.MX53 SRTC

[linux-kernel-dev]

From: Patrick Bruenn <p.bruenn@xxxxxxxxxxxx>

Neither rtc-imxdi, rtc-mxc nor rtc-snvs are compatible with i.MX53.

This is driver enables support for the low power domain SRTC features:
- 32-bit MSB of non-rollover time counter
- 32-bit alarm register

Based on:
http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/drivers/rtc/rtc-mxc_v2.c?h=imx_2.6.35_11.09.01

v2:
- have seperate patches for dt-binding, CONFIG option, imx53.dtsi and driver
- add SPDX-License-Identifier and cleanup copyright notice
- replace __raw_readl/writel() with readl/writel()
- fix PM_SLEEP callbacks
- add CONFIG_RTC_DRV_MXC_V2 to build rtc-mxc_v2.c
- remove misleading or obvious comments and fix style of the remaining
- avoid endless loop while waiting for hw
- implement consistent locking; make spinlock a member of dev struct
- enable clk only for register accesses
- remove all udelay() calls since they are obsolete or redundant
  (we are already waiting for register flags to change)
- init platform_data before registering irq callback
- let set_time() fail, when 32 bit rtc counter exceeded
- make names more consistent
- cleanup and reorder includes
- cleanup and remove unused defines

To: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
To: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx> (maintainer:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS)
Cc: linux-rtc@xxxxxxxxxxxxxxx (open list:REAL TIME CLOCK (RTC) SUBSYSTEM)
Cc: devicetree@xxxxxxxxxxxxxxx (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS)
Cc: linux-kernel@xxxxxxxxxxxxxxx (open list)
Cc: Fabio Estevam <fabio.estevam@xxxxxxx>
Cc: Juergen Borleis <jbe@xxxxxxxxxxxxxx>
Cc: Noel Vellemans <Noel.Vellemans@xxxxxxxxxxxxx>
Cc: Shawn Guo <shawnguo@xxxxxxxxxx>
Cc: Sascha Hauer <kernel@xxxxxxxxxxxxxx> (maintainer:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE)
Cc: Russell King <linux@xxxxxxxxxxxxxxx> (maintainer:ARM PORT)
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx (moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE)

Cc: Philippe Ombredanne <pombredanne@xxxxxxxx>
Cc: Lothar WaÃmann <LW@xxxxxxxxxxxxxxxxxxx>

Patrick Bruenn (5):
  dt-bindings: rtc: add bindings for i.MX53 SRTC
  ARM: dts: imx53: add srtc node
  rtc: mxc_v2: add driver for i.MX53 SRTC
  ARM: imx_v4_v5_defconfig: enable RTC_DRV_MXC_V2
  rtc: add mxc driver for i.MX53 SRTC

 .../devicetree/bindings/rtc/rtc-mxc_v2.txt         |  17 +
 arch/arm/boot/dts/imx53.dtsi                       |   4 +-
 arch/arm/configs/imx_v4_v5_defconfig               |   1 +
 drivers/rtc/Kconfig                                |  10 +
 drivers/rtc/Makefile                               |   1 +
 drivers/rtc/rtc-mxc_v2.c                           | 433 +++++++++++++++++++++
 6 files changed, 463 insertions(+), 3 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/rtc/rtc-mxc_v2.txt
 create mode 100644 drivers/rtc/rtc-mxc_v2.c

-- 
2.11.0