On Mon, Mar 21, 2022 at 07:51:32PM +0800, Axe Yang wrote: > Extend interrupts and pinctrls for SDIO wakeup interrupt feature. > This feature allow SDIO devices alarm asynchronous interrupt to host > even when host stop providing clock to SDIO card. An extra wakeup > interrupt and pinctrl states for SDIO DAT1 pin state switching are > required in this scenario. > > Signed-off-by: Axe Yang <axe.yang@xxxxxxxxxxxx> > --- > .../devicetree/bindings/mmc/mtk-sd.yaml | 23 ++++++++++++++++++- > 1 file changed, 22 insertions(+), 1 deletion(-) > > diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml > index 297ada03e3de..f57774535a1d 100644 > --- a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml > +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml > @@ -69,12 +69,23 @@ properties: > - const: ahb_cg > > interrupts: > - maxItems: 1 > + description: > + Should at least contain MSDC GIC interrupt. To support SDIO in-band wakeup, an extended > + interrupt is required and be configured as wakeup source irq. > + minItems: 1 > + maxItems: 2 > > pinctrl-names: > + description: > + Should at least contain default and state_uhs. To support SDIO in-band wakeup, dat1 pin > + will be switched between GPIO mode and SDIO DAT1 mode, state_eint and state_dat1 are > + mandatory in this scenarios. > + minItems: 2 > items: > - const: default > - const: state_uhs > + - const: state_eint > + - const: state_dat1 > > pinctrl-0: > description: > @@ -86,6 +97,16 @@ properties: > should contain uhs mode pin ctrl. > maxItems: 1 > > + pinctrl-2: > + description: > + should switch dat1 pin to GPIO mode. > + maxItems: 1 > + > + pinctrl-3: > + description: > + should switch SDIO dat1 pin from GPIO mode back to SDIO mode. How is this different than pinctrl-0? > + maxItems: 1 > + > assigned-clocks: > description: > PLL of the source clock. > -- > 2.25.1 > >
