From: Dong Aisheng <aisheng.dong@nxp.com> Sent: Tuesday, May 09, 2017 3:51 PM

To: linux-serial at vger.kernel.org
Cc: linux-kernel at vger.kernel.org; linux-arm-kernel at lists.infradead.org;
gregkh at linuxfoundation.org; jslaby at suse.com; Andy Duan
[off-list ref]; stefan at agner.ch; Mingkai Hu
[off-list ref]; Y.B. Lu [off-list ref]; A.S. Dong
[off-list ref]
Subject: [PATCH 0/6] tty: serial: lpuart: add imx7ulp support

This patch series mainly intends to add imx7ulp support which is also using FSL
lpuart.

The lpuart in imx7ulp is basically the same as ls1021a. It's also
32 bit width register, but unlike ls1021a, it's little endian.
Besides that, imx7ulp lpuart has a minor different register layout from ls1021a
that it has four extra registers (verid, param, global,
pincfg) located at the beginning of register map, which are currently not used
by the driver and less to be used later.

Furthermore, this patch serial also add a new more accurate baud rate
calculation method as MX7ULP can't divide a suitable baud rate with the
default setting.

Currently the new baud rate calculation is only enabled on MX7ULP.
However, i guess the Layerscape may also be able to use it as there seems to
be no difference in baud rate setting register after checking the Layerscape
Reference Manual.

As i don't have Layerscape boards, i can't test it, so i only enable it for MX7ULP
by default to avoid a potential break.

I copied LayerScape guys in this series and hope they can help test later.
If it works on Layerscape as well, then they can switch to the new setting too
and totally remove the old stuff.

Dong Aisheng (6):
 tty: serial: lpuart: introduce lpuart_soc_data to represent SoC
   property
 tty: serial: lpuart: add little endian 32 bit register support
 dt-bindings: serial: fsl-lpuart: add i.MX7ULP support
 tty: serial: lpuart: add imx7ulp support
 tty: serial: lpuart: add earlycon support for imx7ulp
 tty: serial: lpuart: add a more accurate baud rate calculation method

.../devicetree/bindings/serial/fsl-lpuart.txt      |   2 +
drivers/tty/serial/fsl_lpuart.c                    | 149 ++++++++++++++++++---
2 files changed, 136 insertions(+), 15 deletions(-)

--
2.7.4

The series looks fine.

Acked-by: Fugang Duan <redacted>