On 03/08/2012 11:52 AM, Jean-Christophe PLAGNIOL-VILLARD wrote: > On 11:12 Thu 08 Mar , Rob Herring wrote: >> On 03/08/2012 02:50 AM, Jean-Christophe PLAGNIOL-VILLARD wrote: >>> For now on use i2c-gpio driver on the same pin as the hardware IP. >>> >>> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <[email protected]> >>> Cc: Nicolas Ferre <[email protected]> >>> Cc: [email protected] >>> --- >>> v3: >>> >>> update i2c binding (Rob comments) >>> >>> Best Regards, >>> J. >>> arch/arm/boot/dts/at91sam9x5.dtsi | 39 >>> +++++++++++++++++++++++++++++++++++++ >>> 1 files changed, 39 insertions(+), 0 deletions(-) >>> >>> diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi >>> b/arch/arm/boot/dts/at91sam9x5.dtsi >>> index c294657..fdd1ac6 100644 >>> --- a/arch/arm/boot/dts/at91sam9x5.dtsi >>> +++ b/arch/arm/boot/dts/at91sam9x5.dtsi >>> @@ -188,4 +188,43 @@ >>> status = "disabled"; >>> }; >>> }; >>> + >>> + i2c-gpio@0 { >>> + compatible = "i2c-gpio"; >>> + gpios = <&pioA 30 0 /* sda */ >>> + &pioA 31 0 /* scl */ >>> + >; >>> + i2c-gpio,sda-open-drain; >>> + i2c-gpio,scl-open-drain; >>> + i2c-gpio,delay-us = <2>; /* ~100 kHz */ >>> + #address-cells = <1>; >>> + #size-cells = <0>; >>> + status = "disabled"; >>> + }; >>> + >>> + i2c-gpio@1 { >>> + compatible = "i2c-gpio"; >>> + gpios = <&pioC 0 0 /* sda */ >>> + &pioC 1 0 /* scl */ >>> + >; >>> + i2c-gpio,sda-open-drain; >>> + i2c-gpio,scl-open-drain; >>> + i2c-gpio,delay-us = <2>; /* ~100 kHz */ >>> + #address-cells = <1>; >>> + #size-cells = <0>; >>> + status = "disabled"; >>> + }; >>> + >>> + i2c-gpio@2 { >>> + compatible = "i2c-gpio"; >>> + gpios = <&pioB 4 0 /* sda */ >>> + &pioB 5 0 /* scl */ >>> + >; >>> + i2c-gpio,sda-open-drain; >>> + i2c-gpio,scl-open-drain; >>> + i2c-gpio,delay-us = <2>; /* ~100 kHz */ >>> + #address-cells = <1>; >>> + #size-cells = <0>; >>> + status = "disabled"; >>> + }; >> >> If these are just any random gpio lines, it seems strange to define >> these in a SOC dtsi and then disable them. > they are not, they are the same pin as the i2c hardware IP. > > Today the hw driver is not ready or will not work correctly (IP issue) > > On hardware design we use the I2C pin but can not use the hw driver >
Okay. Then other than the i2c-gpio node name, ack for all of these. Rob _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
