[RFC PATCH 15/16] ARM: dts: rockchip: Add rk3588-u-boot.dtsi

[Jagan Teki]

On Fri, 27 Jan 2023 at 19:03, Eugen Hristev <eugen.hristev at collabora.com> wrote:
>
> Hello Jagan,
>
>
> On 1/26/23 00:27, Jagan Teki wrote:
> > Add u-boot,dm-spl and u-boot,dm-pre-reloc related properties
> > for Rockchip RK3588 SoC.
>
> It appears this file/commit does more than just adding u-boot,* properties
>
> >
> > Signed-off-by: Jagan Teki <jagan at edgeble.ai>
> > ---
> >   arch/arm/dts/rk3588-u-boot.dtsi | 101 ++++++++++++++++++++++++++++++++
> >   1 file changed, 101 insertions(+)
> >   create mode 100644 arch/arm/dts/rk3588-u-boot.dtsi
> >
> > diff --git a/arch/arm/dts/rk3588-u-boot.dtsi b/arch/arm/dts/rk3588-u-boot.dtsi
> > new file mode 100644
> > index 0000000000..b5cc4dcc60
> > --- /dev/null
> > +++ b/arch/arm/dts/rk3588-u-boot.dtsi
> > @@ -0,0 +1,101 @@
> > +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> > +/*
> > + * Copyright (c) 2022 Edgeble AI Technologies Pvt. Ltd.
> > + */
> > +
> > +#include "rockchip-u-boot.dtsi"
> > +#include <dt-bindings/gpio/gpio.h>
> > +
> > +/ {
> > +     dmc {
> > +             compatible = "rockchip,rk3588-dmc";
> > +             u-boot,dm-pre-reloc;
> > +             status = "okay";
> > +     };
> > +
> > +     pmu1_grf: syscon at fd58a000 {
> > +             u-boot,dm-pre-reloc;
> > +             compatible = "rockchip,rk3588-pmu1-grf", "syscon";
> > +             reg = <0x0 0xfd58a000 0x0 0x2000>;
> > +     };
> > +
> > +     sdmmc: mmc at fe2c0000 {
>
> Just for my understanding, why are you adding here a new node sdmmc, and
> have it disabled, while you have another node called 'sdhci' which you
> enable further down in the file ?
> What is the purpose of this sdmmc node? and defining it here.

In order to boot SDCard, linux doesn't support this node yet so once
Linux has it we can sync and drop this from here. Idea is to have
devicetree files be the same as in Linux in order to maintain them
properly. As long as the specific node is not supported in Linux that
would be considered as -u-boot.dtsi specific.

Jagan.