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H A D | omap.h | d97556c8 Thu Jan 05 13:07:18 CST 2017 Tony Lindgren <tony@atomide.com> ARM: dts: Fix omap3 off mode pull defines
We need to also have OFFPULLUDENABLE bit set to use the off mode pull values. Otherwise the line is pulled down internally if no external pull exists.
This is has some documentation at:
http://processors.wiki.ti.com/index.php/Optimizing_OMAP35x_and_AM/DM37x_OFF_mode_PAD_configuration
Note that the value is still glitchy during off mode transitions as documented in spz319f.pdf "Advisory 1.45". It's best to use external pulls instead of relying on the internal ones for off mode and even then anything pulled up will get driven down momentarily on off mode restore for GPIO banks other than bank1.
Signed-off-by: Tony Lindgren <tony@atomide.com> d97556c8 Thu Jan 05 13:07:18 CST 2017 Tony Lindgren <tony@atomide.com> ARM: dts: Fix omap3 off mode pull defines We need to also have OFFPULLUDENABLE bit set to use the off mode pull values. Otherwise the line is pulled down internally if no external pull exists. This is has some documentation at: http://processors.wiki.ti.com/index.php/Optimizing_OMAP35x_and_AM/DM37x_OFF_mode_PAD_configuration Note that the value is still glitchy during off mode transitions as documented in spz319f.pdf "Advisory 1.45". It's best to use external pulls instead of relying on the internal ones for off mode and even then anything pulled up will get driven down momentarily on off mode restore for GPIO banks other than bank1. Signed-off-by: Tony Lindgren <tony@atomide.com>
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