On Thu, Apr 13, 2017 at 10:04:27PM -0300, Javier Martinez Canillas wrote:
> The at24 driver allows to register I2C EEPROM chips using different vendor
> and devices, but the I2C subsystem does not take the vendor into account
> when matching using the I2C table since it only has device entries.
>
> But when matching using an OF table, both the vendor and device has to be
> taken into account so the driver defines only a set of compatible strings
> using the "atmel" vendor as a generic fallback for compatible I2C devices.
>
> So add this generic fallback to the device node compatible string to make
> the device to match the driver using the OF device ID table.
>
> Signed-off-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
> ---
>
> Changes in v3: None
> Changes in v2: None
>
> arch/arm/boot/dts/am335x-baltos.dtsi | 2 +-
> arch/arm/boot/dts/am335x-base0033.dts | 2 +-
> arch/arm/boot/dts/am335x-bone-common.dtsi | 10 +++++-----
> arch/arm/boot/dts/am335x-nano.dts | 2 +-
> arch/arm/boot/dts/am335x-pepper.dts | 2 +-
> arch/arm/boot/dts/am335x-shc.dts | 2 +-
> arch/arm/boot/dts/am335x-sl50.dts | 2 +-
> arch/arm/boot/dts/am437x-idk-evm.dts | 2 +-
> arch/arm/boot/dts/am437x-sk-evm.dts | 2 +-
> arch/arm/boot/dts/am43x-epos-evm.dts | 2 +-
> arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi | 2 +-
> arch/arm/boot/dts/omap3-cm-t3x.dtsi | 2 +-
> arch/arm/boot/dts/omap3-gta04.dtsi | 2 +-
> arch/arm/boot/dts/omap3-sb-t35.dtsi | 2 +-
> arch/arm/boot/dts/omap4-var-som-om44.dtsi | 2 +-
> arch/arm/boot/dts/omap5-cm-t54.dts | 2 +-
> arch/arm/boot/dts/omap5-sbc-t54.dts | 2 +-
> 17 files changed, 21 insertions(+), 21 deletions(-)
>
> diff --git a/arch/arm/boot/dts/am335x-baltos.dtsi b/arch/arm/boot/dts/am335x-baltos.dtsi
> index d42b98f15e8b..6ca780d0623f 100644
> --- a/arch/arm/boot/dts/am335x-baltos.dtsi
> +++ b/arch/arm/boot/dts/am335x-baltos.dtsi
> @@ -255,7 +255,7 @@
> };
>
> at24@50 {
> - compatible = "at24,24c02";
> + compatible = "at24,24c02", "atmel,24c02";
I think you can just drop the at24 compatibles. A new kernel doesn't
need it. An old kernel ignores the manufacturer. I checked that u-boot
only matches on "atmel,*", so okay there. Don't know about the *BSDs. I
couldn't find anything.
Minimally, the deprecated compatible should come last.
Rob
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