On Thu, Jun 13, 2024 at 11:59:46AM -0600, Rob Herring wrote: > On Wed, Jun 12, 2024 at 12:32:54PM +0800, Potin Lai wrote: > > In ARM Server Base Manageability Requirements (SBMR) document, Callers can > > choose to not read back Response Data after sending the command "Send Boot > > Progress Code". > > Got a link to that document? > > > Define "arm-sbmr,skip-bootprogress-response" property for skipping the > > response of "Send Boot Progress Code" from userspace. > > I don't understand why this would be conditional? How can you define in > the BMC what the host behavior is? Doesn't the host side decide > that? So don't you always have to support no response? Yeah, this doesn't make any sense for two reasons: What if the host wanted to read back the response? You make no provision for that, as I believe Rob said above. The BMC should be able to start a new transaction without the previous response being read. So this should be pointless. If that's not happening, it's a bug and should be fixed. Otherwise an untimely reset could hang the SSIF interface. -corey > > > > > Signed-off-by: Potin Lai <potin.lai.pt@xxxxxxxxx> > > --- > > Documentation/devicetree/bindings/ipmi/ssif-bmc.yaml | 5 +++++ > > 1 file changed, 5 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/ipmi/ssif-bmc.yaml b/Documentation/devicetree/bindings/ipmi/ssif-bmc.yaml > > index 02b662d780bbb..b21e958efc184 100644 > > --- a/Documentation/devicetree/bindings/ipmi/ssif-bmc.yaml > > +++ b/Documentation/devicetree/bindings/ipmi/ssif-bmc.yaml > > @@ -19,6 +19,11 @@ properties: > > reg: > > maxItems: 1 > > > > + arm-sbmr,skip-bootprogress-response: > > Form is vendor,property-name where vendor is defined in > vendor-prefixes.yaml. 'arm-sbmr' is not a vendor. > > > + type: boolean > > + description: > > + Skipping ARM SBMR “Send Boot Progress Code” response. > > + > > required: > > - compatible > > - reg > > -- > > 2.31.1 > >
