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On 02/10/2024 18:02, Conor Dooley wrote: > On Wed, Oct 02, 2024 at 04:59:19PM +0300, Andrei Stefanescu wrote: >> The SIUL2 hardware module is also integrated into the S32G3 SoC. Add >> another compatible for it. >> >> Signed-off-by: Andrei Stefanescu > > I'm not convinced that the representation here is correct for the > GPIO on these devices. See: > https://lore.kernel.org/all/20240926143122.1385658-3-andrei.stefanescu@oss.nxp.com/ > Since GPIO and pinctrl share the same regions, that lack of conviction > extends to the pinctrl. I don't think adding another compatible here is > right, when I am already of the opinion that the binding is wrong for > the existing one. I will convert the SIUL2 GPIO driver from my other patch series(the one you mentioned) and merge it with the existing SIUL2 pinctrl driver. Therefore, the unified pinctrl&GPIO will use the existing pinctrl compatible. I also considered the syscon&simple-mfd approach but it is harder to implement because: - the memory regions for the two SIUL2 modules are not next to each other and cannot be grouped together - some registers in SIUL2 are 32bit wide and some are 16bit wide The combined GPIO&pinctrl driver will have 4 memory resources: - SIUL2_0 32 bit registers (used for pinmux&pinconf) - SIUL2_0 16 bit registers (used for setting/getting the GPIO output/input value) - SIUL2_1 32 bit registers (same as SIUL2_0 + interrupt related registers) - SIUL2_1 16 bit registers (same as SIUL2_0) Would that be ok? Best regards, Andrei > >> --- >> .../bindings/pinctrl/nxp,s32g2-siul2-pinctrl.yaml | 8 ++++++-- >> 1 file changed, 6 insertions(+), 2 deletions(-) >> >> diff --git a/Documentation/devicetree/bindings/pinctrl/nxp,s32g2-siul2-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/nxp,s32g2-siul2-pinctrl.yaml >> index a24286e4def6..cff766c2f03b 100644 >> --- a/Documentation/devicetree/bindings/pinctrl/nxp,s32g2-siul2-pinctrl.yaml >> +++ b/Documentation/devicetree/bindings/pinctrl/nxp,s32g2-siul2-pinctrl.yaml >> @@ -25,8 +25,12 @@ description: | >> >> properties: >> compatible: >> - enum: >> - - nxp,s32g2-siul2-pinctrl >> + oneOf: >> + - enum: >> + - nxp,s32g2-siul2-pinctrl >> + - items: >> + - const: nxp,s32g3-siul2-pinctrl >> + - const: nxp,s32g2-siul2-pinctrl >> >> reg: >> description: | >> -- >> 2.45.2 >>