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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>
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This patch adds the remaining pin functions and mux groups.
All unknown and debug functions are omitted. Existing functions
for qpic, sdio, rgmii, rmii, wifi/d are squashed together as
much as possible. And only in case of a clash, the individually
named functions have been kept. The exceptions are:
led0-11
i2s_rx, i2s_tx, i2s_td, i2s_spdif_in, i2s_spdif_out,
smart0-3
Cc: Varadarajan Narayanan <varada@codeaurora.org>
Cc: Ram Chandra Jangir <rjangir@codeaurora.org>
Cc: John Crispin <john@phrozen.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Christian Lamparter
Christian Lamparter
Varadarajan Narayanan