• Lee Jones's avatar
    pinctrl: st: Display pin's function when printing pinctrl debug information · a8381fac
    Lee Jones authored
    Great for easily determining which mode a pin is operating in.
    This patch was particularly helpful when debugging a recent GPIO/
    Pinctrl disparity issue.
    
    Before:
        $ cat /sys/kernel/debug/pinctrl/<pin-controller>/pinconf-pins
          pin 33 (PIO4[1]):[OE:0,PU:0,OD:0]
                 [retime:0,invclk:0,clknotdat:0,de:0,rt-clk:0,rt-delay:0]
    
    After [GPIO]:
        $ cat /sys/kernel/debug/pinctrl/<pin-controller>/pinconf-pins
          pin 33 (PIO4[1]):[OE:0,PU:0,OD:0] GPIO
                 [retime:0,invclk:0,clknotdat:0,de:0,rt-clk:0,rt-delay:0]
    
    After [Alt]:
        $ cat /sys/kernel/debug/pinctrl/<pin-controller>/pinconf-pins
          pin 33 (PIO4[1]):[OE:0,PU:0,OD:0] Alt Fn 2
                 [retime:0,invclk:0,clknotdat:0,de:0,rt-clk:0,rt-delay:0]
    Acked-by: default avatarMaxime Coquelin <maxime.coquelin@st.com>
    Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
    Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
    a8381fac
pinctrl-st.c 49 KB