Sorry, a small correction.
On Fri, 27 May 2022 at 17:06, Pintu Agarwal <pintu.ping@xxxxxxxxx> wrote:
>
> On Fri, 27 May 2022 at 15:34, Pintu Agarwal <pintu.ping@xxxxxxxxx> wrote:
> >
> > Hi,
> >
> > On Thu, 26 May 2022 at 19:53, T.Michael Turney <quic_mturney@xxxxxxxxxxx> wrote:
> > >
> > > Kernel developers correct me where I go astray, but this seems like the
> > > CONFIG_XYZ value is not available in this file. This would explain why
> > > the disable case works.
> > >
> > > At top of dtsi file are you #include <config.h> or whatever the correct
> > > syntax is to see the CONFIG values?
> >
> > Thanks for your comments.
> > No, I could not find any specific config,h to be included to make the
> > CONFIG values visible to dts.
> >
>
> BTW, I tried another approach but this also doesn't work when CONFIG is enabled.
> a) I have created a new header file such as myxyz.h and defined a new
> macro with config check.
> => myxyz.h
> +#ifdef CONFIG_XYZ
> +#define XYZ_CMA
> +#endif
>
> b) Then I included the header file in my dtsi file and used ifdef with
> the new macro.
>
> #include "myxyz.h"
>
> #ifdef CONFIG_XYZ
#ifdef XYZ_CMA
> &reserved_mem {
> xyz_region: xyz_region {
> compatible = "shared-dma-pool";
> reusable;
> size = <0x600000>;
> };
> };
> #endif
>
> But unfortunately this approach also did not work when CONFIG is
> enabled. So, when config enable/disable its same behavior.
> However, if I put the #define in the dtsi file itself then it works as expected.
>
>
> Thanks,
> Pintu
