Messages in this thread | | | From | Linus Walleij <> | Date | Fri, 24 May 2019 13:26:14 +0200 | Subject | Re: [PATCH] pinctrl: stm32: add lock mechanism for irqmux selection |
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On Fri, May 10, 2019 at 9:43 AM Alexandre Torgue <alexandre.torgue@st.com> wrote:
> GPIOs are split between several banks (A, B, ...) and each bank can have > up to 16 lines. Those GPIOs could be used as interrupt lines thanks to > exti lines. As there are only 16 exti lines, a mux is used to select which > gpio line is connected to which exti line. Mapping is done as follow: > > -A0, B0, C0.. -->exti_line_0 (X0 selected by mux_0) > -A1, B1, C1.. -->exti_line_1 (X1 selected by mux_1) > ... > > This patch adds a protection to avoid overriding on mux_n for exti_line_n. > > Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
Patch applied, can't say I fully understand it but you know what you're doing!
Yours, Linus Walleij
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