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From: Sudeep Holla <sudeep.holla@arm.com>
To: Jolly Shah <JOLLYS@xilinx.com>
Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	"matt@codeblueprint.co.uk" <matt@codeblueprint.co.uk>,
	"hkallweit1@gmail.com" <hkallweit1@gmail.com>,
	"michal.simek@xilinx.com" <michal.simek@xilinx.com>,
	"robh+dt@kernel.org" <robh+dt@kernel.org>,
	"mark.rutland@arm.com" <mark.rutland@arm.com>,
	Sudeep Holla <sudeep.holla@arm.com>,
	"ard.biesheuvel@linaro.org" <ard.biesheuvel@linaro.org>,
	"mingo@kernel.org" <mingo@kernel.org>,
	"keescook@chromium.org" <keescook@chromium.org>,
	"dmitry.torokhov@gmail.com" <dmitry.torokhov@gmail.com>,
	Rajan Vaja <RAJANV@xilinx.com>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
Subject: Re: [PATCH v5 1/4] dt-bindings: firmware: Add bindings for ZynqMP firmware
Date: Thu, 8 Mar 2018 11:48:09 +0000	[thread overview]
Message-ID: <f6a416b7-542f-a3c3-538f-8549cf4e96c3@arm.com> (raw)
In-Reply-To: <CY1PR0201MB0764FB23021F5DC694C7F56DB8D80@CY1PR0201MB0764.namprd02.prod.outlook.com>



On 07/03/18 22:25, Jolly Shah wrote:
> Hi Sudeep,
> 

[...]

>>> +Examples:
>>> +	firmware {
>>> +		zynqmp_firmware: zynqmp-firmware {
>>> +			compatible = "xlnx,zynqmp-firmware";
>>> +			method = "smc";
>>> +		};
>>> +	};
>>>
>>
>> Do you foresee using SMC/HVC for this firmware even on future platforms?
>> If not, I suggest to keep the protocol part separate from the transport i.e.
>> smc/hvc via ATF. It could be replaced with mailbox or some h/w mechanism in
>> future ?
>>
> 
> We have PSCI and EEMI interfaces exposed to linux from ATF. PSCI is
> an EEMI client. We do not have current plans to switch to mailbox as it
> will require 2 communication channels to PMU as PSCI is through ATF.
> 

OK, but I just saw some bindings that has mailbox interface, honestly
it's getting too confusing with multiple series on the same thing
floating and hence I requested to put it together as one series.
-- 
Regards,
Sudeep

  reply	other threads:[~2018-03-08 11:48 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-20 19:21 [PATCH v5 0/4] drivers: firmware: xilinx: Add firmware driver support Jolly Shah
2018-02-20 19:21 ` [PATCH v5 1/4] dt-bindings: firmware: Add bindings for ZynqMP firmware Jolly Shah
2018-03-01 14:15   ` Sudeep Holla
2018-03-07 22:25     ` Jolly Shah
2018-03-08 11:48       ` Sudeep Holla [this message]
2018-03-12 23:07         ` Jolly Shah
2018-03-13 10:16           ` Sudeep Holla
2018-03-13 18:56             ` Jolly Shah
2018-03-01 21:18   ` Rob Herring
2018-02-20 19:21 ` [PATCH v5 2/4] drivers: firmware: xilinx: Add ZynqMP firmware driver Jolly Shah
2018-03-01 14:27   ` Sudeep Holla
2018-03-07  0:44     ` Jolly Shah
2018-03-08 12:18       ` Sudeep Holla
2018-03-12 23:05         ` Jolly Shah
2018-03-13 10:24           ` Sudeep Holla
2018-03-15 17:53             ` Jolly Shah
2018-03-15 17:57               ` Sudeep Holla
2018-03-14 13:22   ` Greg KH
2018-02-20 19:21 ` [PATCH v5 3/4] drivers: firmware: xilinx: Add sysfs interface Jolly Shah
2018-03-01 13:32   ` Michal Simek
2018-03-01 14:09   ` Andy Shevchenko
2018-03-01 14:44   ` Sudeep Holla
2018-03-07 22:03     ` Jolly Shah
2018-02-20 19:21 ` [PATCH v5 4/4] drivers: firmware: xilinx: Add debugfs interface Jolly Shah

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