From: Jan Kiszka <jan.kiszka@siemens.com>
To: Krzysztof Kozlowski <krzk@kernel.org>, Nishanth Menon <nm@ti.com>,
Santosh Shilimkar <ssantosh@kernel.org>,
Vignesh Raghavendra <vigneshr@ti.com>,
Tero Kristo <kristo@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org,
"Siddharth Vadapalli" <s-vadapalli@ti.com>,
"Bao Cheng Su" <baocheng.su@siemens.com>,
"Hua Qian Li" <huaqian.li@siemens.com>,
"Diogo Ivo" <diogo.ivo@siemens.com>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Bjorn Helgaas" <bhelgaas@google.com>
Subject: Re: [PATCH v4 2/7] dt-bindings: PCI: ti,am65: Extend for use with PVU
Date: Fri, 6 Sep 2024 09:13:18 +0200 [thread overview]
Message-ID: <d35f94d3-6231-4c19-8795-8807d361d04a@siemens.com> (raw)
In-Reply-To: <3b8ff45e-28d8-4180-a46d-f507fa0bb65c@siemens.com>
On 05.09.24 09:16, Jan Kiszka wrote:
> On 05.09.24 08:57, Krzysztof Kozlowski wrote:
>> On 04/09/2024 12:00, Jan Kiszka wrote:
>>> +
>>> + reg-names:
>>> + minItems: 4
>>> + items:
>>> + - const: app
>>> + - const: dbics
>>> + - const: config
>>> + - const: atu
>>> + - const: vmap_lp
>>> + - const: vmap_hp
>>> +
>>> + memory-region:
>>
>> This also did not improve. You did not address any feedback from v3.
>>
>> Missed feedback:
>>
>> This *must* be defined in top-level.
>
> Answered in the other reply.
>
>> I still think this must have some sort of maxItems. I accept your
>> explanation that you could have multiple memory pools, but I don't think
>> 2147000 pools is possible. Make it 4, 8 or 32.
>
> Can do - if you can explain the benefit of that.
>
It turned out during further investigations that swiotlb actually only
allows a single restricted DMA pool per device. So this discussion
auto-resolves, bindings and code will be adjusted in v5.
Jan
--
Siemens AG, Technology
Linux Expert Center
next prev parent reply other threads:[~2024-09-06 7:13 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-04 10:00 [PATCH v4 0/7] soc: ti: Add and use PVU on K3-AM65 for DMA isolation Jan Kiszka
2024-09-04 10:00 ` [PATCH v4 1/7] dt-bindings: soc: ti: Add AM65 peripheral virtualization unit Jan Kiszka
2024-09-04 10:00 ` [PATCH v4 2/7] dt-bindings: PCI: ti,am65: Extend for use with PVU Jan Kiszka
2024-09-04 10:16 ` Siddharth Vadapalli
2024-09-04 11:47 ` Jan Kiszka
2024-09-05 6:32 ` Krzysztof Kozlowski
2024-09-05 6:40 ` Jan Kiszka
2024-09-05 6:53 ` Krzysztof Kozlowski
2024-09-05 7:15 ` Jan Kiszka
2024-09-05 7:50 ` Krzysztof Kozlowski
2024-09-05 7:56 ` Krzysztof Kozlowski
2024-09-06 7:00 ` Jan Kiszka
2024-09-05 6:57 ` Krzysztof Kozlowski
2024-09-05 7:16 ` Jan Kiszka
2024-09-05 7:52 ` Krzysztof Kozlowski
2024-09-06 7:13 ` Jan Kiszka [this message]
2024-09-05 16:37 ` Bjorn Helgaas
2024-09-04 10:00 ` [PATCH v4 3/7] soc: ti: Add IOMPU-like PVU driver Jan Kiszka
2024-09-04 10:00 ` [PATCH v4 4/7] PCI: keystone: Add supported for PVU-based DMA isolation on AM654 Jan Kiszka
2024-09-05 16:33 ` Bjorn Helgaas
2024-09-05 19:07 ` Jan Kiszka
2024-09-05 19:16 ` Bjorn Helgaas
2024-09-06 6:24 ` Jan Kiszka
2024-09-04 10:00 ` [PATCH v4 5/7] arm64: dts: ti: k3-am65-main: Add PVU nodes Jan Kiszka
2024-09-04 10:00 ` [PATCH v4 6/7] arm64: dts: ti: k3-am65-main: Add VMAP registers to PCI root complexes Jan Kiszka
2024-09-04 10:00 ` [PATCH v4 7/7] arm64: dts: ti: iot2050: Enforce DMA isolation for devices behind PCI RC on Advanced Jan Kiszka
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