From: swarren@wwwdotorg•org (Stephen Warren)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH V2 03/10] Documentation: dt-bindings: firmware: tegra: add bindings of the BPMP
Date: Mon, 18 Jul 2016 10:18:08 -0600 [thread overview]
Message-ID: <578D0140.6070004@wwwdotorg.org> (raw)
In-Reply-To: <578C88EC.10706@nvidia.com>
On 07/18/2016 01:44 AM, Joseph Lo wrote:
> Hi Rob,
>
> Thanks for your reviewing.
>
> On 07/12/2016 12:05 AM, Stephen Warren wrote:
>> On 07/11/2016 08:22 AM, Rob Herring wrote:
>>> On Tue, Jul 05, 2016 at 05:04:24PM +0800, Joseph Lo wrote:
>>>> The BPMP is a specific processor in Tegra chip, which is designed for
>>>> booting process handling and offloading the power management, clock
>>>> management, and reset control tasks from the CPU. The binding document
>>>> defines the resources that would be used by the BPMP firmware driver,
>>>> which can create the interprocessor communication (IPC) between the CPU
>>>> and BPMP.
>>
>>>> diff --git
>>>> a/Documentation/devicetree/bindings/firmware/nvidia,tegra186-bpmp.txt
>>>> b/Documentation/devicetree/bindings/firmware/nvidia,tegra186-bpmp.txt
>>
>>>> +NVIDIA Tegra Boot and Power Management Processor (BPMP)
>>>> +
>>>> +The BPMP is a specific processor in Tegra chip, which is designed for
>>>> +booting process handling and offloading the power management, clock
>>>> +management, and reset control tasks from the CPU. The binding document
>>>> +defines the resources that would be used by the BPMP firmware driver,
>>>> +which can create the interprocessor communication (IPC) between the
>>>> CPU
>>>> +and BPMP.
>>>> +
>>>> +Required properties:
>>>> +- name : Should be bpmp
>>>> +- compatible
>>>> + Array of strings
>>>> + One of:
>>>> + - "nvidia,tegra186-bpmp"
>>>> +- mboxes : The phandle of mailbox controller and the mailbox
>>>> specifier.
>>>> +- shmem : List of the phandle of the TX and RX shared memory area that
>>>> + the IPC between CPU and BPMP is based on.
>>>
>>> I think you can use memory-region here.
>>
>> Isn't memory-region intended for references into the /reserved-memory
>> node. If so, that isn't appropriate in this case since this property
>> typically points at on-chip SRAM that isn't included in the OS's view of
>> "system RAM".
> Agree with that.
>
>>
>> Or, should /reserved-memory be used even for (e.g. non-DRAM) memory
>> regions that aren't represented by the /memory/reg property?
>>
>
> For shmem, I follow the same concept of the binding for arm,scpi
> (.../arm/arm,scpi.txt) that is currently using in mainline. Do you think
> that is more appropriate here?
Personally I think the shmem property name used by the current patch is
fine. Still, if Rob feels strongly about changing it, that's fine too.
next prev parent reply other threads:[~2016-07-18 16:18 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-05 9:04 [PATCH V2 00/10] arm64: tegra: add BPMP support Joseph Lo
2016-07-05 9:04 ` [PATCH V2 01/10] Documentation: dt-bindings: mailbox: tegra: Add binding for HSP mailbox Joseph Lo
2016-07-06 17:02 ` Stephen Warren
2016-07-07 6:24 ` Joseph Lo
2016-07-07 18:13 ` Sivaram Nair
2016-07-07 18:35 ` Stephen Warren
2016-07-07 18:44 ` Sivaram Nair
2016-07-11 14:14 ` Rob Herring
2016-07-11 16:08 ` Stephen Warren
2016-07-18 23:13 ` Stephen Warren
2016-07-19 7:09 ` Joseph Lo
2016-07-05 9:04 ` [PATCH V2 02/10] mailbox: tegra-hsp: Add HSP(Hardware Synchronization Primitives) driver Joseph Lo
2016-07-06 7:05 ` Alexandre Courbot
2016-07-06 9:06 ` Joseph Lo
2016-07-06 12:23 ` Alexandre Courbot
2016-07-07 6:37 ` Joseph Lo
2016-07-07 21:33 ` Sivaram Nair
2016-07-18 8:58 ` Joseph Lo
2016-07-06 16:50 ` Stephen Warren
2016-07-07 6:49 ` Joseph Lo
2016-07-07 21:10 ` Sivaram Nair
2016-07-18 8:51 ` Joseph Lo
2016-07-05 9:04 ` [PATCH V2 03/10] Documentation: dt-bindings: firmware: tegra: add bindings of the BPMP Joseph Lo
2016-07-06 11:42 ` Alexandre Courbot
2016-07-07 6:25 ` Joseph Lo
2016-07-06 17:03 ` Stephen Warren
2016-07-07 6:26 ` Joseph Lo
2016-07-11 14:22 ` Rob Herring
2016-07-11 16:05 ` Stephen Warren
2016-07-18 7:44 ` Joseph Lo
2016-07-18 16:18 ` Stephen Warren [this message]
2016-07-13 19:41 ` Stephen Warren
2016-07-18 6:42 ` Joseph Lo
2016-07-05 9:04 ` [PATCH V2 04/10] firmware: tegra: add IVC library Joseph Lo
2016-07-07 11:16 ` Alexandre Courbot
2016-07-09 23:45 ` Paul Gortmaker
2016-07-05 9:04 ` [PATCH V2 05/10] firmware: tegra: add BPMP support Joseph Lo
2016-07-06 11:39 ` Alexandre Courbot
2016-07-06 16:39 ` Stephen Warren
2016-07-06 16:47 ` Matt Longnecker
2016-07-07 2:24 ` Alexandre Courbot
2016-07-07 8:17 ` Joseph Lo
2016-07-07 10:18 ` Alexandre Courbot
2016-07-07 19:55 ` Stephen Warren
2016-07-08 20:19 ` Sivaram Nair
2016-07-08 17:55 ` Sivaram Nair
2016-07-05 9:04 ` [PATCH V2 06/10] soc/tegra: Add Tegra186 support Joseph Lo
2016-07-05 9:04 ` [PATCH V2 07/10] arm64: defconfig: Enable Tegra186 SoC Joseph Lo
2016-07-05 9:04 ` [PATCH V2 08/10] arm64: dts: tegra: Add Tegra186 support Joseph Lo
2016-07-05 9:04 ` [PATCH V2 09/10] arm64: dts: tegra: Add NVIDIA Tegra186 P3310 main board support Joseph Lo
2016-07-05 9:04 ` [PATCH V2 10/10] arm64: dts: tegra: Add NVIDIA P2771 " Joseph Lo
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