On 16/09/2023 04:03, Peng Fan (OSS) wrote: > From: Peng Fan <peng.fan@xxxxxxx> > > i.MX8ULP and i.MX93 actually has two interrupts for each gpio > controller, one for Trustzone non-secure world, one for secure world. > > And they has one register based, not two as i.MX7ULP or VF610. > > Although the Linux Kernel driver gpio-vf610.c could work with > fsl,imx7ulp-gpio compatible, it is based on some tricks did in > device tree with some offset added to base address. > > So actually i.MX8ULP/i.MX93 is not compatible with i.MX7ULP. > > Last, i.MX93 is directly derived from i.MX8ULP, so make i.MX93 GPIO > compatible with i.MX8ULP > > Signed-off-by: Peng Fan <peng.fan@xxxxxxx> > --- > .../devicetree/bindings/gpio/gpio-vf610.yaml | 41 +++++++++++++++++++--- > 1 file changed, 37 insertions(+), 4 deletions(-) > > diff --git a/Documentation/devicetree/bindings/gpio/gpio-vf610.yaml b/Documentation/devicetree/bindings/gpio/gpio-vf610.yaml > index 59427d97adf5..8c1f87a1a393 100644 > --- a/Documentation/devicetree/bindings/gpio/gpio-vf610.yaml > +++ b/Documentation/devicetree/bindings/gpio/gpio-vf610.yaml > @@ -20,6 +20,7 @@ description: | > properties: > compatible: > oneOf: > + - const: fsl,imx8ulp-gpio > - const: fsl,vf610-gpio > - items: > - const: fsl,imx7ulp-gpio > @@ -27,16 +28,21 @@ properties: > - items: > - enum: > - fsl,imx93-gpio > - - fsl,imx8ulp-gpio > - - const: fsl,imx7ulp-gpio > + - const: fsl,imx8ulp-gpio > > reg: > description: The first reg tuple represents the PORT module, the second tuple > represents the GPIO module. > - maxItems: 2 > + items: > + - description: PORT register base address > + - description: GPIO register base address > + minItems: 1 > > interrupts: > - maxItems: 1 > + items: > + - description: GPIO Trustzone non-secure interrupt number > + - description: GPIO Trustzone secure interrupt number > + minItems: 1 > > interrupt-controller: true > > @@ -78,6 +84,33 @@ required: > - "#gpio-cells" > - gpio-controller > > +allOf: > + - if: > + properties: > + compatible: > + contains: > + enum: > + - fsl,vf610-gpio > + - fsl,imx7ulp-gpio > + then: > + properties: > + interrupts: > + items: > + - description: GPIO interrupt number So this is different than first interrupt mentioned in top-level? > + reg: > + items: > + - description: PORT register base address > + - description: GPIO register base address You have the description in top-level, no need to repeat it. Just minItems: 2... although it depends whether top-level property will stay. > + else: > + properties: > + interrupts: > + items: > + - description: GPIO Trustzone non-secure interrupt number > + - description: GPIO Trustzone secure interrupt number > + reg: > + items: > + - description: GPIO register base address So the first entry is different between variants? Then top-level should be just min/maxItems. > + > additionalProperties: false > > examples: > Best regards, Krzysztof
