@@ -23,11 +23,11 @@ The GPIO bank for the controller is represented as a sub-node and it acts as a
GPIO controller.
Required properties for sub-nodes are:
- - reg: should contain address and size for mux, pull-enable, pull and
- gpio register sets
- - reg-names: an array of strings describing the "reg" entries. Must
- contain "mux", "pull" and "gpio". "pull-enable" is optional and
- when it is missing the "pull" registers are used instead
+ - reg: should contain a list of address and size, one tuple for each entry
+ in reg-names.
+ - reg-names: an array of strings describing the "reg" entries.
+ Must contain "mux" and "gpio".
+ May contain "pull", "pull-enable" and "ds" when appropriate.
- gpio-controller: identifies the node as a gpio controller
- #gpio-cells: must be 2
like pull-enable, pull should be optional has this region is available on every controllers. Also, the g12a feature a new region "ds" for the drive-strength All this region thing is one big mess. I suspect that there is only one big GPIO region with holes in it. All registers between the current regions reads '0' so it is probably just spare space to handle more pins. Since we need to continue to handle the existing controllers, switching to one single region now would not simplify things. However, if more organisation layouts and features keep on being added, we may have to look at this again Fixes: 3cd3c83f6752 ("pinctrl: Add compatibles for Amlogic Meson G12A pin controllers") Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> --- .../devicetree/bindings/pinctrl/meson,pinctrl.txt | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) -- 2.20.1