Re: [PATCH] arm64: dts: ti: k3-am62p-mcu/wakeup: Disable MCU and wakeup R5FSS nodes

[Vaishnav Achath]

Hi Nishanth,

On 24/01/24 22:51, Nishanth Menon wrote:
> On 11:26-20240124, Jayesh Choudhary wrote:
> > Hello Vaishnav,
> >
> > On 21/01/24 19:10, Vaishnav Achath wrote:
> > > K3 Remoteproc R5 driver requires reserved memory carveouts and
> > > mailbox configuration to instantiate the cores successfully.
> > > Since this is a board level dependency, keep the R5 subsytem
> > > disabled at SoC dtsi, otherwise it results in probe errors like
> > > below during AM62P SK boot:
> > >
> > > r5fss@79000000: reserved memory init failed, ret = -22
> > > r5fss@79000000: k3_r5_cluster_rproc_init failed, ret = -22
> > > r5fss@78000000: reserved memory init failed, ret = -22
> > > r5fss@78000000: k3_r5_cluster_rproc_init failed, ret = -22
> > >
> > > Fixes: b5080c7c1f7e ("arm64: dts: ti: k3-am62p: Add nodes for more IPs")
> > >
> > > Signed-off-by: Vaishnav Achath <vaishnav.a@xxxxxx>
> >
> > Reviewed-by: Jayesh Choudhary <j-choudhary@xxxxxx>
> >
> > > ---
> > >    arch/arm64/boot/dts/ti/k3-am62p-mcu.dtsi    | 2 ++
> > >    arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi | 1 +
> > >    2 files changed, 3 insertions(+)
> > >
> > > diff --git a/arch/arm64/boot/dts/ti/k3-am62p-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-mcu.dtsi
> > > index c4b0b91d70cf..14eb9ba836d3 100644
> > > --- a/arch/arm64/boot/dts/ti/k3-am62p-mcu.dtsi
> > > +++ b/arch/arm64/boot/dts/ti/k3-am62p-mcu.dtsi
> > > @@ -187,6 +187,8 @@ mcu_r5fss0: r5fss@79000000 {
> > >    		ranges = <0x79000000 0x00 0x79000000 0x8000>,
> > >    			 <0x79020000 0x00 0x79020000 0x8000>;
> > >    		power-domains = <&k3_pds 7 TI_SCI_PD_EXCLUSIVE>;
> > > +		status = "disabled";
> > > +
> > >    		mcu_r5fss0_core0: r5f@79000000 {
> > >    			compatible = "ti,am62-r5f";
> > >    			reg = <0x79000000 0x00008000>,
> > > diff --git a/arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi
> > > index 19f42b39394e..10a7059b2d9b 100644
> > > --- a/arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi
> > > +++ b/arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi
> > > @@ -78,6 +78,7 @@ wkup_r5fss0: r5fss@78000000 {
> > >    		ranges = <0x78000000 0x00 0x78000000 0x8000>,
> > >    			 <0x78100000 0x00 0x78100000 0x8000>;
> > >    		power-domains = <&k3_pds 119 TI_SCI_PD_EXCLUSIVE>;
> > > +		status = "disabled";
>
> Is there a reason for difference in white space addition?

For mcu_r5fss0_core0 child node there was no blank line as per the 
recommended coding style : 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/dts-coding-style.rst#n124

So I added a newline there and wkup_r5fss0 already had it correct, since 
the change was trivial it was not mentioned in commit message.

Thanks and Regards,
Vaishnav

> > >    		wkup_r5fss0_core0: r5f@78000000 {
> > >    			compatible = "ti,am62-r5f";
> >
> > Thanks.