Re: [U-Boot] [PATCH] pinctrl: uniphier: set input-enable before pin-muxing

2016-03-08 Thread Masahiro Yamada
2016-03-04 15:56 GMT+09:00 Masahiro Yamada : > While IECTRL is disabled, input signals are pulled-down internally. > If pin-muxing is set up first, glitch signals (Low to High transition) > might be input to hardware blocks. > > Bad case scenario: > [1] The hardware block is already running before

[U-Boot] [PATCH] pinctrl: uniphier: set input-enable before pin-muxing

2016-03-03 Thread Masahiro Yamada
While IECTRL is disabled, input signals are pulled-down internally. If pin-muxing is set up first, glitch signals (Low to High transition) might be input to hardware blocks. Bad case scenario: [1] The hardware block is already running before pinctrl is handled. (the reset is de-asserted by defa