Hi Alex,
I added Claudiu in the thread.
Regards,
Mihai
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Am Tue, May 28, 2024 at 05:31:09PM +0200 schrieb Alexander Dahl:
> These properties are common for all i2c subnodes, and marked as
> 'required' in atmel/microchip i2c bindings. Allows to add i2c device
> nodes (like an rtc for example) in other .dts files including
> sam9x60.dtsi without requiring to repeat these properties for each i2c
> device again and again.
>
> Found on a custom board after adding this in .dts:
>
> &flx5 {
> atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_TWI>;
> status = "okay";
>
> i2c5: i2c@600 {
> pinctrl-0 = <&pinctrl_flx5_default>;
> status = "okay";
>
> pcf8523: rtc@68 {
> compatible = "nxp,pcf8523";
> reg = <0x68>;
> };
> };
> };
>
> … which created a warning like this:
>
> […]:236.4-17: Warning (reg_format): /ahb/apb/flexcom@f0004000/i2c@600/rtc@68:reg: property has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1)
> […]: Warning (pci_device_reg): Failed prerequisite 'reg_format'
> […]: Warning (pci_device_bus_num): Failed prerequisite 'reg_format'
> […]: Warning (simple_bus_reg): Failed prerequisite 'reg_format'
> […]/linux-6.6.25/arch/arm/boot/dts/microchip/sam9x60.dtsi:283.19-299.7: Warning (i2c_bus_bridge): /ahb/apb/flexcom@f0004000/i2c@600: incorrect #address-cells for I2C bus also defined at […]:228.16-238.4
> […]/linux-6.6.25/arch/arm/boot/dts/microchip/sam9x60.dtsi:283.19-299.7: Warning (i2c_bus_bridge): /ahb/apb/flexcom@f0004000/i2c@600: incorrect #size-cells for I2C bus also defined at […]:228.16-238.4
> […]: Warning (i2c_bus_reg): Failed prerequisite 'reg_format'
> […]: Warning (i2c_bus_reg): Failed prerequisite 'i2c_bus_bridge'
> […]: Warning (spi_bus_reg): Failed prerequisite 'reg_format'
> […]:234.19-237.5: Warning (avoid_default_addr_size): /ahb/apb/flexcom@f0004000/i2c@600/rtc@68: Relying on default #address-cells value
> […]:234.19-237.5: Warning (avoid_default_addr_size): /ahb/apb/flexcom@f0004000/i2c@600/rtc@68: Relying on default #size-cells value
> […]: Warning (avoid_unnecessary_addr_size): Failed prerequisite 'avoid_default_addr_size'
> […]: Warning (unique_unit_address): Failed prerequisite 'avoid_default_addr_size'
>
> This probably should have been done with commit 84f23f3284d5 ("ARM: dts:
> at91: sam9x60: move flexcom definitions") already, where those
> address-cells and size-cells properties were left in the board .dts
> files instead of moving them to the dtsi.
It's been a while. Is something wrong with the patch? Or with the commit message?
at91 support seems to have slowed down somehow lately? :-/
Greets
Alex
>
> Signed-off-by: Alexander Dahl <ada@xxxxxxxxxxx>
> ---
> .../dts/microchip/at91-sam9x60_curiosity.dts | 2 --
> .../arm/boot/dts/microchip/at91-sam9x60ek.dts | 4 ---
> arch/arm/boot/dts/microchip/sam9x60.dtsi | 26 +++++++++++++++++++
> 3 files changed, 26 insertions(+), 6 deletions(-)
> base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0
> --
> 2.39.2
