On 2020-08-21 16:13, Chris Healy wrote:
> On Fri, Aug 21, 2020 at 6:21 AM Stefan Agner <stefan@xxxxxxxx> wrote:
>>
>> On 2020-08-20 06:10, Chris Healy wrote:
>> > From: Chris Healy <cphealy@xxxxxxxxx>
>> >
>> > Add syscon compatibility with Vybrid ocotp node. This is required to
>> > access the UID.
>>
>> Hm, it seems today the SoC driver uses the specific compatible. It also
>> should expose the UID as soc_id, see drivers/soc/imx/soc-imx.c.
>>
> Yes, until I added syscon, the soc_id was empty and I would get the
> following line in dmesg: "failed to find vf610-ocotp regmap!
>
Ah I see, it looks up syscon, so that requires syscon to be in
compatible.
>> Maybe it does make sense exposing it as syscon, but then we should
>> probably also adjust
>> Documentation/devicetree/bindings/nvmem/vf610-ocotp.txt.
>>
> Makes sense. I will update vf610-ocotp.txt in v3. Tnx
>
Ok, thx. With that you can add Reviewed-by: Stefan Agner
<stefan@xxxxxxxx> as well.
--
Stefan
>> --
>> Stefan
>>
>> >
>> > Fixes: fa8d20c8dbb77 ("ARM: dts: vfxxx: Add node corresponding to OCOTP")
>> > Cc: stable@xxxxxxxxxxxxxxx
>> > Signed-off-by: Chris Healy <cphealy@xxxxxxxxx>
>> > ---
>> > Changes in v2:
>> > - Add Fixes line to commit message
>> >
>> > arch/arm/boot/dts/vfxxx.dtsi | 2 +-
>> > 1 file changed, 1 insertion(+), 1 deletion(-)
>> >
>> > diff --git a/arch/arm/boot/dts/vfxxx.dtsi b/arch/arm/boot/dts/vfxxx.dtsi
>> > index 0fe03aa0367f..2259d11af721 100644
>> > --- a/arch/arm/boot/dts/vfxxx.dtsi
>> > +++ b/arch/arm/boot/dts/vfxxx.dtsi
>> > @@ -495,7 +495,7 @@ edma1: dma-controller@40098000 {
>> > };
>> >
>> > ocotp: ocotp@400a5000 {
>> > - compatible = "fsl,vf610-ocotp";
>> > + compatible = "fsl,vf610-ocotp", "syscon";
>> > reg = <0x400a5000 0x1000>;
>> > clocks = <&clks VF610_CLK_OCOTP>;
>> > };
