linux-kernel - Re: [PATCH v2 00/16] mmc: meson-gx: driver fixups and upgrades

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Date:   Thu, 24 Aug 2017 17:05:59 -0700
From:   Kevin Hilman <khilman@...libre.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>
Cc:     Jerome Brunet <jbrunet@...libre.com>,
        Carlo Caione <carlo@...one.org>,
        "linux-mmc\@vger.kernel.org" <linux-mmc@...r.kernel.org>,
        "open list\:ARM\/Amlogic Meson..." 
        <linux-amlogic@...ts.infradead.org>,
        "linux-arm-kernel\@lists.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 00/16] mmc: meson-gx: driver fixups and upgrades

Ulf Hansson <ulf.hansson@...aro.org> writes:

> On 22 August 2017 at 13:46, Jerome Brunet <jbrunet@...libre.com> wrote:
>> On Tue, 2017-08-22 at 13:15 +0200, Ulf Hansson wrote:
>>> On 21 August 2017 at 18:02, Jerome Brunet <jbrunet@...libre.com> wrote:
>>> > The patchset features several bugfixes, rework and upgrade for the
>>> > meson-gx MMC driver.
>>> >
>>> > The main goal is to improve readability and enable new high speed
>>> > modes, such as eMMC DDR52 and sdcard UHS modes up to SDR50 (100Mhz)
>>> >
>>> > SDR104 is not working with a few cards on the p200 and the
>>> > libretech-cc. I suspect that 200Mhz might be a bit too fast for the PCB
>>> > of these boards, adding noise to the signal and eventually breaking
>>> > the communication with some cards. The same cards are working well on a
>>> > laptop or the nanopi-k2 at 200Mhz.
>>> >
>>> > This series has been tested on gxbb-p200, gxbb-nanopi-k2 and
>>> > gxl-s905x-libretech-cc
>>> >
>>> > Changes since v1 [0]:
>>> > * Reorder patches to have fixes first, then rework and finally
>>> >   enhancements.
>>> > * Use CCF to manage clock phases
>>> >
>>> > [0]: https://lkml.kernel.org/r/20170804174353.16486-1-jbrunet@baylibre.com
>>> >
>>> > Jerome Brunet (16):
>>> >   mmc: meson-gx: fix mux mask definition
>>> >   mmc: meson-gx: remove CLK_DIVIDER_ALLOW_ZERO clock flag
>>> >   mmc: meson-gx: clean up some constants
>>> >   mmc: meson-gx: use _irqsave variant of spinlock
>>> >   mmc: meson-gx: cfg init overwrite values
>>> >   mmc: meson-gx: rework set_ios function
>>> >   mmc: meson-gx: rework clk_set function
>>> >   mmc: meson-gx: rework clock init function
>>> >   mmc: meson-gx: fix dual data rate mode frequencies
>>> >   mmc: meson-gx: work around clk-stop issue
>>> >   mmc: meson-gx: simplify interrupt handler
>>> >   mmc: meson-gx: implement card_busy callback
>>> >   mmc: meson-gx: use CCF to handle the clock phases
>>> >   mmc: meson-gx: implement voltage switch callback
>>> >   mmc: meson-gx: change default tx phase
>>> >   mmc: meson-gx: rework tuning function
>>> >
>>> >  drivers/mmc/host/meson-gx-mmc.c | 718 +++++++++++++++++++++++++++--------
>>> > -----
>>> >  1 file changed, 497 insertions(+), 221 deletions(-)
>>> >
>>> > --
>>> > 2.9.5
>>> >
>>>
>>> So far, I decided to pick patch 1 -> 3.
>>
>> Thx Ulf.
>> Do you want me to respin w/o patch 1 -> 4 or shall I wait for further review on
>> the other changes ?
>
> I think you can wait a bit, hopefully some of the earlier authors and
> Kevin can give some input as well.

Most of them already had a Reviewed-by from me, but I just reviewed the
new/updateds one now as well.

Kevin