diff options
| author | Stephen Boyd <sboyd@codeaurora.org> | 2018-03-23 19:34:49 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2018-03-27 16:33:40 +0300 |
| commit | b9c725ed73b7cecc7c9bc4b752ab3eb975ef9330 (patch) | |
| tree | 0449d1b714e78f0374f6d39d2e4b84c0659a0116 /drivers/gpio | |
| parent | 0c8efd610b58cb23cefdfa12015799079aef94ae (diff) | |
| download | linux-b9c725ed73b7cecc7c9bc4b752ab3eb975ef9330.tar.xz | |
dt-bindings: gpio: Add a gpio-reserved-ranges property
Some qcom platforms make some GPIOs or pins unavailable for use
by non-secure operating systems, and thus reading or writing the
registers for those pins will cause access control issues.
Introduce a DT property to describe the set of GPIOs that are
available for use so that higher level OSes are able to know what
pins to avoid reading/writing.
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: <devicetree@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Tested-by: Timur Tabi <timur@codeaurora.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
0 files changed, 0 insertions, 0 deletions