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SubjectRe: [PATCH v4 0/8] Various patches for SAMA5D2 backup mode
Hi,

On 28/09/2017 at 11:46:19 +0200, Romain Izard wrote:
> While the core of the backup mode for SAMA5D2 has been integrated in
> v4.13, it is far from complete. Individual controllers in the chip have
> drivers that do not support the reset of the registers during suspend,
> and they need to be adapted to handle it.
>
> The first patch uses the clock wakeup code from the prototype backup
> mode instead of the version integrated in the mainline, as the mainline
> version is not stable. During a test loop with two-second backup
> suspend, the mainline version will hang in less than one day, whereas
> the prototype version has been running the same test for more than a
> week without hanging.
>
> While all these patches are provided in a series, the clock, mtd,
> usb, pwm and mfd patch do not depend on each other.
>
> Changes in v2:
> * drop the IIO patch duplicating existing code
> * determine the number of programmable clocks to save dynamically
> * declare a required local variable in the tty/serial patch
>
> Changes in v3:
> * drop dev_printk changes for PMECC
> * rework the resume code for PMECC
> * improve comments on PMC clock handling
>
> Changes in v4:
> * fix a bug in the PMECC resume code
>
> Romain Izard (8):
> clk: at91: pmc: Wait for clocks when resuming
> clk: at91: pmc: Save SCSR during suspend
> clk: at91: pmc: Support backup for programmable clocks
> mtd: nand: atmel: Avoid ECC errors when leaving backup mode
> ehci-atmel: Power down during suspend is normal
> pwm: atmel-tcb: Support backup mode
> atmel_flexcom: Support backup mode
> tty/serial: atmel: Prevent a warning on suspend
>

Really, you have to stop sending those independent patches as a series
if you want to have a chance to see them being merged.

> drivers/clk/at91/clk-programmable.c | 2 +
> drivers/clk/at91/pmc.c | 63 ++++++++++++++++++++++++++-----
> drivers/clk/at91/pmc.h | 2 +
> drivers/mfd/atmel-flexcom.c | 65 ++++++++++++++++++++++++--------
> drivers/mtd/nand/atmel/nand-controller.c | 3 ++
> drivers/mtd/nand/atmel/pmecc.c | 17 +++++----
> drivers/mtd/nand/atmel/pmecc.h | 1 +
> drivers/pwm/pwm-atmel-tcb.c | 63 ++++++++++++++++++++++++++++++-
> drivers/tty/serial/atmel_serial.c | 13 +++++++
> drivers/usb/host/ehci-atmel.c | 3 +-
> 10 files changed, 196 insertions(+), 36 deletions(-)
>
> --
> 2.11.0
>

--
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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