Re: [PATCH 02/14] dt-bindings: soc: milbeaut: Add Milbeaut trampoline description

From: Sugaya, Taichi
Date: Thu Nov 29 2018 - 07:24:57 EST


Thank you for your comments.

On 2018/11/28 11:01, Stephen Boyd wrote:
Quoting Sugaya Taichi (2018-11-18 17:01:07)
Add DT bindings document for Milbeaut trampoline.

Signed-off-by: Sugaya Taichi<sugaya.taichi@xxxxxxxxxxxxx>
.../devicetree/bindings/soc/socionext/socionext,m10v.txt | 12 ++++++++++++
1 file changed, 12 insertions(+)
create mode 100644 Documentation/devicetree/bindings/soc/socionext/socionext,m10v.txt

diff --git a/Documentation/devicetree/bindings/soc/socionext/socionext,m10v.txt b/Documentation/devicetree/bindings/soc/socionext/socionext,m10v.txt
new file mode 100644
index 0000000..f5d906c
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/socionext/socionext,m10v.txt
@@ -0,0 +1,12 @@
+Socionext M10V SMP trampoline driver binding
+This is a driver to wait for sub-cores while boot process.
+- compatible: should be "socionext,smp-trampoline"
+- reg: should be <0x4C000100 0x100>
+ trampoline: trampoline@0x4C000100 {
Drop the 0x part of unit addresses.


+ compatible = "socionext,smp-trampoline";
+ reg = <0x4C000100 0x100>;
Looks like a software construct, which we wouldn't want to put into DT
this way. DT doesn't describe drivers.
We would like to use this node only getting the address of the trampoline area
in which sub-cores wait. (They have finished to go to this area in previous
bootloader process.)

So should we embed the constant value in source codes instead of getting from
DT because the address is constant at the moment? Or is there other approach?

Sugaya Taichi