[U-Boot] [PATCH] arm: dts: am33xx: add u-boot, dm-spl to ocp bus

[Tom Rini]

On Thu, Jan 31, 2019 at 04:48:10PM +0100, Hannes Schmelzer wrote:

> On 1/31/19 3:57 PM, Tom Rini wrote:
> >On Thu, Jan 31, 2019 at 08:03:19AM +0100, Hannes Schmelzer wrote:
> >
> >>commit fdce9d35dc36 ("arm: dts: am33xx: Sync dts with Linux 4.20.0")
> >>did remove the "u-boot,dm-spl" flag from the 'ocp' bus which was
> >>introduced with
> >>commit 19aa4ac09db9 ("dts: am33xx: add u-boot, dm-spl to ocp bus")
> >>
> >>Due to this the brppt1_spi board is broken because it cannot
> >>bind/probe the spi-interface during SPL stage.
> >>
> >>This commit adds this flag again.
> >>
> >>This flag is needed for having access to the devices below this bus,
> >>most important is uart and boot-device (spi, mmc, ...) in SPL stage.
> >>
> >>Signed-off-by: Hannes Schmelzer <hannes.schmelzer at br-automation.com>
> >>
> >>---
> >>
> >>  arch/arm/dts/am33xx.dtsi | 1 +
> >>  1 file changed, 1 insertion(+)
> >>
> >>diff --git a/arch/arm/dts/am33xx.dtsi b/arch/arm/dts/am33xx.dtsi
> >>index d3dd6a1..0a6b177 100644
> >>--- a/arch/arm/dts/am33xx.dtsi
> >>+++ b/arch/arm/dts/am33xx.dtsi
> >>@@ -160,6 +160,7 @@
> >>  	 * the whole bus hierarchy.
> >>  	 */
> >>  	ocp {
> >>+		u-boot,dm-spl;
> >>  		compatible = "simple-bus";
> >>  		#address-cells = <1>;
> >>  		#size-cells = <1>;
> >We need to put this into one of the -u-boot.dtsi files and then #include
> >it from the others, so that we don't keep dropping this flag.  Thanks!
> Hi Tom,
> i'm not sure if we can do that this way because the "ocp" bus has no valid
> label like other elements.
> So we have at least to adjust the am33xx.dtsi file like this:
> 
>         ocp : ocp {
>                 compatible = "simple-bus";
>                 .....
>         }
> 
> what do you suggest ?

Er, with the example of arch/arm/dts/am335x-pdu001-u-boot.dtsi should't
we be able to just do that, globally?  Or is that part _not_ working and
relied on the now removed hunk?

-- 
Tom
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