From: Rob Herring <robh@kernel.org>
To: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: "Jingoo Han" <jingoohan1@gmail.com>,
"Gustavo Pimentel" <gustavo.pimentel@synopsys.com>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Rahul Tanwar" <rtanwar@maxlinear.com>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Jonathan Hunter" <jonathanh@nvidia.com>,
"Serge Semin" <fancer.lancer@gmail.com>,
"Alexey Malahov" <Alexey.Malahov@baikalelectronics.ru>,
"Pavel Parkhomenko" <Pavel.Parkhomenko@baikalelectronics.ru>,
"Frank Li" <Frank.Li@nxp.com>,
"Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
linux-pci@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org
Subject: Re: [PATCH v2 05/17] PCI: dwc: Convert to using native IP-core versions representation
Date: Mon, 16 May 2022 15:31:22 -0500 [thread overview]
Message-ID: <20220516203122.GC3209795-robh@kernel.org> (raw)
In-Reply-To: <20220503214638.1895-6-Sergey.Semin@baikalelectronics.ru>
On Wed, May 04, 2022 at 12:46:26AM +0300, Serge Semin wrote:
> Since DWC PCIe v4.70a the controller version can be read from the
> PORT_LOGIC.PCIE_VERSION_OFF register. Version is represented in the FourCC
> format [1]. It's standard versioning approach for the Synopsys DWC
> IP-cores. Moreover some of the DWC kernel drivers already make use of it
> to fixup version-dependent functionality (See DWC USB3, Stmicro STMMAC or
> recent DW SPI driver). In order to preserve the standard version
> representation and prevent the data conversion back and forth, we suggest
> to preserve the native version representation in the DWC PCIe driver too
> in the same way as it has already been done in the rest of the DWC
> drivers. IP-core version reading from the CSR will be introduced in the
> next commit together with a simple macro-based API to use it.
>
> [1] https://en.wikipedia.org/wiki/FourCC
>
> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
> ---
> drivers/pci/controller/dwc/pci-keystone.c | 12 ++++++------
> drivers/pci/controller/dwc/pcie-designware.c | 8 ++++----
> drivers/pci/controller/dwc/pcie-designware.h | 10 +++++++++-
> drivers/pci/controller/dwc/pcie-intel-gw.c | 4 ++--
> drivers/pci/controller/dwc/pcie-tegra194.c | 2 +-
> 5 files changed, 22 insertions(+), 14 deletions(-)
Reviewed-by: Rob Herring <robh@kernel.org>
next prev parent reply other threads:[~2022-05-16 20:57 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-03 21:46 [PATCH v2 00/17] PCI: dwc: Add dma-ranges/YAML-schema/Baikal-T1 support Serge Semin
2022-05-03 21:46 ` [PATCH v2 01/17] dt-bindings: PCI: dwc: Define common and native DT bindings Serge Semin
2022-05-16 20:11 ` Rob Herring
2022-05-19 10:26 ` Serge Semin
2022-05-03 21:46 ` [PATCH v2 02/17] dt-bindings: PCI: dwc: Add Baikal-T1 PCIe Root Port bindings Serge Semin
2022-05-03 21:46 ` [PATCH v2 03/17] PCI: dwc: Add more verbose link-up message Serge Semin
2022-05-16 20:18 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 04/17] PCI: dwc: Detect iATU settings after getting "addr_space" resource Serge Semin
2022-05-16 20:21 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 05/17] PCI: dwc: Convert to using native IP-core versions representation Serge Semin
2022-05-16 20:30 ` Rob Herring
2022-05-20 9:29 ` Serge Semin
2022-05-20 15:06 ` Rob Herring
2022-05-20 16:08 ` Serge Semin
2022-05-16 20:31 ` Rob Herring [this message]
2022-05-03 21:46 ` [PATCH v2 06/17] PCI: dwc: Add IP-core version detection procedure Serge Semin
2022-05-16 20:32 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 07/17] PCI: dwc: Introduce Synopsys IP-core versions/types interface Serge Semin
2022-05-16 20:33 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 08/17] PCI: dwc: Add host de-initialization callback Serge Semin
2022-05-16 20:48 ` Rob Herring
2022-05-20 10:20 ` Serge Semin
2022-05-03 21:46 ` [PATCH v2 09/17] PCI: dwc: Drop inbound iATU types enumeration - dw_pcie_as_type Serge Semin
2022-05-03 21:46 ` [PATCH v2 10/17] PCI: dwc: Drop iATU regions enumeration - dw_pcie_region_type Serge Semin
2022-05-16 20:49 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 11/17] PCI: dwc: Simplify in/outbound iATU setup methods Serge Semin
2022-05-12 14:01 ` Manivannan Sadhasivam
2022-05-12 19:22 ` Serge Semin
2022-05-03 21:46 ` [PATCH v2 12/17] PCI: dwc: Add iATU regions size detection procedure Serge Semin
2022-05-16 21:01 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 13/17] PCI: dwc: Verify in/out regions against iATU constraints Serge Semin
2022-05-16 21:07 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 14/17] PCI: dwc: Check iATU in/outbound ranges setup methods status Serge Semin
2022-05-16 21:35 ` Rob Herring
2022-05-20 10:36 ` Serge Semin
2022-05-03 21:46 ` [PATCH v2 15/17] PCI: dwc: Introduce dma-ranges property support for RC-host Serge Semin
2022-05-12 13:57 ` Manivannan Sadhasivam
2022-05-12 19:41 ` Serge Semin
2022-05-17 17:20 ` Manivannan Sadhasivam
2022-05-18 19:26 ` Serge Semin
2022-05-19 7:40 ` Manivannan Sadhasivam
2022-05-19 10:52 ` Serge Semin
2022-05-19 15:21 ` Manivannan Sadhasivam
2022-05-20 18:21 ` Serge Semin
2022-05-16 21:42 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 16/17] PCI: dwc: Introduce generic platform clocks and resets sets Serge Semin
2022-05-16 22:29 ` Rob Herring
2022-05-20 16:02 ` Serge Semin
2022-05-03 21:46 ` [PATCH v2 17/17] PCI: dwc: Add Baikal-T1 PCIe controller support Serge Semin
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