On Fri, 2 Aug 2019 at 06:48, Patrick Delaunay patrick.delaunay@st.com wrote:
In the Linux pinctrl binding, the pin configuration nodes don't need to be direct children of the pin controller device (may be grandchildren for example). This behavior is managed with the pinconfig u-class which recursively bind all the sub-node of the pin controller.
But for some binding (when pin configuration is only children of pin controller) that is not necessary. U-Boot can save memory and reduce the number of pinconf instance when this feature is deactivated (for arch stm32mp for example for SPL).
This patch allows to control this feature with a new option CONFIG_PINCONF_RECURSIVE when it is possible for each individual pin controller device.
Signed-off-by: Patrick Delaunay patrick.delaunay@st.com
Reviewed-by: Simon Glass sjg@chromium.org
Hi,
Found her a proposal to have a more clear output of "dm tree" command and to reduce the memory footprint of PINCTRL_FULL for the arch stm32mp1 (bdinfo "Early malloc usage" is reduced from 2588 to 2144).
Gosh that is still a lot! But a nice improvement.
Regards, Simon