Re: [PATCH 1/2] arm: dts: k3-j721e-mcu-wakeup: Disable hyperbus controller node

Nishanth Menon
2023-03-30T18:51:06Z

On 23:10-20230330, Vaishnav Achath wrote:
> J721E SoC has a hyperbus controller and OSPI controller muxed and only
> one of the controllers can be active at a time. While enabling the
> support for hyperbus, both the OSPI and hyperbus nodes were enabled
> by default and hyperbus was disabled in board dts. This causes issues
> in other J721E based platforms which does not explicitly disable the
> hbmc node in board dts, thus disable hyperbus node by default.
>
> Fixes: 297daac43afb ("arm: dts: k3-j721e-mcu-wakeup: Add HyperBus Controller node")
>
> Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
> ---
>
> Since this node is not present in corresponding upstream kernel DTS
> now, a manual fix is needed.
>
> arch/arm/dts/k3-j721e-mcu-wakeup.dtsi | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/dts/k3-j721e-mcu-wakeup.dtsi b/arch/arm/dts/k3-j721e-mcu-wakeup.dtsi
> index 22166c7942..b7a0dd2326 100644
> --- a/arch/arm/dts/k3-j721e-mcu-wakeup.dtsi
> +++ b/arch/arm/dts/k3-j721e-mcu-wakeup.dtsi
> @@ -183,6 +183,7 @@
> };
>
> hbmc: hyperbus@47034000 {
> + status = "disabled";
> compatible = "ti,j721e-hbmc", "ti,am654-hbmc";
> reg = <0x0 0x47034000 0x0 0x100>,
> <0x5 0x00000000 0x1 0x0000000>;
> --
> 2.17.1
>

We should just delete the entire node. this does'nt exist in upstream[1]

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi

--
Regards,
Nishanth Menon
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