On 09:47-20210528, Suman Anna wrote: > Reserve some portions of the MAIN domain on-chip SRAM for use by various > R5F cores on AM642 EVM and SK boards. A bank (256 KB) each is reserved > from the on-chip SRAM for each R5F core. This is done through specific > child SRAM nodes in the board dts file. > > The memory regions are also assigned to each R5F remoteproc node using > the sram property. The reserved SRAM banks are as follows for each core: > Main R5FSS0 Core0 : OCSRAM1 > Main R5FSS0 Core1 : OCSRAM2 > Main R5FSS1 Core0 : OCSRAM3 > Main R5FSS1 Core1 : OCSRAM4 > > Signed-off-by: Suman Anna <s-anna@xxxxxx> > Signed-off-by: Ming Wei <mwei@xxxxxx> > Signed-off-by: Nishanth Menon <nm@xxxxxx> > Link: https://lore.kernel.org/r/20210528144718.25132-5-s-anna@xxxxxx > --- > arch/arm64/boot/dts/ti/k3-am642-evm.dts | 22 ++++++++++++++++++++++ > arch/arm64/boot/dts/ti/k3-am642-sk.dts | 22 ++++++++++++++++++++++ > 2 files changed, 44 insertions(+) > > diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts > index 4d0b3f86525e..083df636d7ff 100644 > --- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts > +++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts > @@ -184,28 +184,50 @@ cpsw3g_phy3: ethernet-phy@3 { > }; > }; > > +&oc_sram { > + main_r5fss0_core0_sram: r5f-sram@40000 { > + reg = <0x40000 0x40000>; > + }; > + > + main_r5fss0_core1_sram: r5f-sram@80000 { > + reg = <0x80000 0x40000>; > + }; > + > + main_r5fss1_core0_sram: r5f-sram@c0000 { > + reg = <0xc0000 0x40000>; > + }; > + > + main_r5fss1_core1_sram: r5f-sram@100000 { > + reg = <0x100000 0x40000>; > + }; > +}; We need to relook at these addresses -> please see the series from Vignesh[1] and Ashwath[2]. 0x0 <-> 0x1a0000 is free 0x1a0000 <-> 0x1bc000 -> TF-A 0x1bc000 <-> 0x1c0000 -> Free 0x1c0000 <-> 0x200000 -> Seems to be sysfw? [1] https://lore.kernel.org/linux-devicetree/20210609140604.9490-1-vigneshr@xxxxxx/ [2] https://lore.kernel.org/linux-devicetree/162343800075.7434.10921347563461214925.b4-ty@xxxxxx/ -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D
