From: Guillaume La Roque <glaroque@baylibre.com>
To: linus.walleij@linaro.org, khilman@baylibre.com
Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org,
linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org,
jbrunet@baylibre.com
Subject: [PATCH v4 0/6] Add drive-strength in Meson pinctrl driver
Date: Thu, 9 May 2019 18:28:53 +0200 [thread overview]
Message-ID: <20190509162859.7001-1-glaroque@baylibre.com> (raw)
The purpose of this patchset is to add drive-strength support in meson pinconf
driver. This is a new feature that was added on the g12a. It is critical for us
to support this since many functions are failing with default pad drive-strength.
The value achievable by the SoC are 0.5mA, 2.5mA, 3mA and 4mA and the DT property
'drive-strength' is expressed in mA.
So this patch add another generic property "drive-strength-uA". The change to do so
would be minimal and could be benefit to other platforms later on.
Cheers
Guillaume
Changes since v3:
- remove dev_err in meson_get_drive_strength
- cleanup code
Changes since v2:
- update driver-strength-uA property to be compliant with DT documentation
- rework patch series for better understanding
- rework set_bias function
Changes since v1:
- fix missing break
- implement new pinctrl generic property "drive-strength-uA"
[1] https://lkml.kernel.org/r/20190314163725.7918-1-jbrunet@baylibre.com
Guillaume La Roque (6):
dt-bindings: pinctrl: add a 'drive-strength-microamp' property
pinctrl: generic: add new 'drive-strength-microamp' property support
dt-bindings: pinctrl: meson: Add drive-strength-microamp property
pinctrl: meson: Rework enable/disable bias part
pinctrl: meson: add support of drive-strength-microamp
pinctrl: meson: g12a: add DS bank value
.../bindings/pinctrl/meson,pinctrl.txt | 4 +
.../bindings/pinctrl/pinctrl-bindings.txt | 3 +
drivers/pinctrl/meson/pinctrl-meson-g12a.c | 36 ++--
drivers/pinctrl/meson/pinctrl-meson.c | 180 ++++++++++++++----
drivers/pinctrl/meson/pinctrl-meson.h | 18 +-
drivers/pinctrl/pinconf-generic.c | 2 +
include/linux/pinctrl/pinconf-generic.h | 3 +
7 files changed, 193 insertions(+), 53 deletions(-)
--
2.17.1
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next reply other threads:[~2019-05-09 16:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-09 16:28 Guillaume La Roque [this message]
2019-05-09 16:28 ` [PATCH v4 1/6] dt-bindings: pinctrl: add a 'drive-strength-microamp' property Guillaume La Roque
2019-05-09 16:29 [PATCH v4 0/6] Add drive-strength in Meson pinctrl driver Guillaume La Roque
2019-05-09 17:34 ` Kevin Hilman
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