From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: "Krishna Chaitanya Chundru" <krishna.chundru@oss.qualcomm.com>,
cros-qcom-dts-watchers@chromium.org,
"Bjorn Andersson" <andersson@kernel.org>,
"Konrad Dybcio" <konradybcio@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Jingoo Han" <jingoohan1@gmail.com>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
quic_vbadigan@quicinc.com, quic_mrana@quicinc.com,
quic_vpernami@quicinc.com, mmareddy@quicinc.com
Subject: Re: [PATCH v5 1/7] arm64: dts: qcom: sc7280: Increase config size to 256MB for ECAM feature
Date: Tue, 11 Mar 2025 12:13:12 +0100 [thread overview]
Message-ID: <3332fe69-dddb-439d-884f-2b97845c14e1@oss.qualcomm.com> (raw)
In-Reply-To: <20250309-ecam_v4-v5-1-8eff4b59790d@oss.qualcomm.com>
On 3/9/25 6:45 AM, Krishna Chaitanya Chundru wrote:
> PCIe ECAM(Enhanced Configuration Access Mechanism) feature requires
> maximum of 256MB configuration space.
>
> To enable this feature increase configuration space size to 256MB. If
> the config space is increased, the BAR space needs to be truncated as
> it resides in the same location. To avoid the bar space truncation move
> config space, DBI, ELBI, iATU to upper PCIe region and use lower PCIe
> iregion entirely for BAR region.
>
> This depends on the commit: '10ba0854c5e6 ("PCI: qcom: Disable mirroring
> of DBI and iATU register space in BAR region")'
>
> Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Konrad
next prev parent reply other threads:[~2025-03-11 11:13 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-09 5:45 [PATCH v5 0/7] PCI: dwc: Add ECAM support with iATU configuration Krishna Chaitanya Chundru
2025-03-09 5:45 ` [PATCH v5 1/7] arm64: dts: qcom: sc7280: Increase config size to 256MB for ECAM feature Krishna Chaitanya Chundru
2025-03-10 9:34 ` Krzysztof Kozlowski
2025-03-11 11:13 ` Konrad Dybcio [this message]
2025-03-26 17:56 ` Konrad Dybcio
2025-03-28 11:44 ` Manivannan Sadhasivam
2025-03-28 12:54 ` Krishna Chaitanya Chundru
2025-03-28 15:29 ` Manivannan Sadhasivam
2025-03-28 20:44 ` Konrad Dybcio
2025-03-29 6:25 ` Manivannan Sadhasivam
2025-03-09 5:45 ` [PATCH v5 2/7] dt-bindings: PCI: qcom,pcie-sc7280: Make elbi register as an optional Krishna Chaitanya Chundru
2025-03-10 9:31 ` Krzysztof Kozlowski
2025-03-28 11:48 ` Manivannan Sadhasivam
2025-03-09 5:45 ` [PATCH v5 3/7] arch: arm64: qcom: sc7280: Remove optional elbi register Krishna Chaitanya Chundru
2025-03-10 9:32 ` Krzysztof Kozlowski
2025-03-09 5:45 ` [PATCH v5 4/7] PCI: dwc: Add support for ELBI resource mapping Krishna Chaitanya Chundru
2025-03-28 11:53 ` Manivannan Sadhasivam
2025-03-09 5:45 ` [PATCH v5 5/7] PCI: dwc: qcom: Switch to dwc " Krishna Chaitanya Chundru
2025-03-28 11:57 ` Manivannan Sadhasivam
2025-03-09 5:45 ` [PATCH v5 6/7] PCI: dwc: Add ECAM support with iATU configuration Krishna Chaitanya Chundru
2025-03-09 5:45 ` [PATCH v5 7/7] PCI: qcom: Add support for ECAM feature Krishna Chaitanya Chundru
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