Commit Graph

4 Commits

Author SHA1 Message Date
Christian Lamparter c50495aa4c dt-bindings: pinctrl: fix bias-pull,up typo
This patch fixes a shared typo in several qcom pinctrl dt-bindings.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
2019-05-02 14:56:23 -05:00
Christian Lamparter c1e802f68c dt-bindings: pinctrl: qcom: add gpio-ranges, gpio-reserved-ranges
This patch adds the gpio-ranges and gpio-reserved-ranges property
definitions to the binding text files supported by the pinctrl-msm
driver framework.

gpio-ranges:
For DT-based platforms the pinctrl-msm framework currently relies
on the deprecated-for-DT gpiochip_add_pin_range() function to add
the range of GPIOs to be handled by the pin controller. Due to
interactions within gpiolib code, this causes the pinctrl-msm
driver to bail out (-517) during boot when a gpio-hog is declared.
This can be fatal and cause the system to not boot or reset
(for a detailed explanation and call-trace, refer to patch:
"pinctrl: msm: fix gpio-hog related boot issues" in this series).

gpio-reserved-ranges:
The binding has been added as a precaution since the TrustZone
firmware (aka QSEE), which is running as the hypervisor, might
have reserved certain, but undisclosed pins. Hence reading or
writing to the registers for those pins will cause an
XPU violation and this subsequently crashes the kernel.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-06-28 16:28:33 +02:00
Linus Walleij 14672f43ac pinctrl: qcom: update DT bindings with ebi2 groups
This adds the ebi2 and ebi2cs groups to the MSM8660 pin control
documentation document.

Cc: devicetree@vger.kernel.org
Cc: Andy Gross <andy.gross@linaro.org>
Cc: Björn Andersson <bjorn.andersson@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-07-08 19:40:45 +02:00
Bjorn Andersson 1bb6fad359 pinctrl: dt-binding: Add DT binding documentation for MSM8660
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-06-10 10:19:18 +02:00