linux-kernel - Re: [PATCH V15 12/13] phy: tegra: Add PCIe PIPE2UPHY support

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Date:   Mon, 12 Aug 2019 12:23:00 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Vidya Sagar <vidyas@...dia.com>
Cc:     lorenzo.pieralisi@....com, bhelgaas@...gle.com, robh+dt@...nel.org,
        mark.rutland@....com, jonathanh@...dia.com, kishon@...com,
        catalin.marinas@....com, will.deacon@....com, jingoohan1@...il.com,
        gustavo.pimentel@...opsys.com, digetx@...il.com,
        mperttunen@...dia.com, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kthota@...dia.com, mmaddireddy@...dia.com, sagar.tv@...il.com
Subject: Re: [PATCH V15 12/13] phy: tegra: Add PCIe PIPE2UPHY support

On Fri, Aug 09, 2019 at 10:16:08AM +0530, Vidya Sagar wrote:
> Synopsys DesignWare core based PCIe controllers in Tegra 194 SoC interface
> with Universal PHY (UPHY) module through a PIPE2UPHY (P2U) module.
> For each PCIe lane of a controller, there is a P2U unit instantiated at
> hardware level. This driver provides support for the programming required
> for each P2U that is going to be used for a PCIe controller.
> 
> Signed-off-by: Vidya Sagar <vidyas@...dia.com>
> Acked-by: Kishon Vijay Abraham I <kishon@...com>
> ---
> V15:
> * None
> 
> V14:
> * None
> 
> V13:
> * None
> 
> V12:
> * None
> 
> V11:
> * Replaced PTR_ERR_OR_ZERO() with PTR_ERR() as the check for zero is already
>   present in the code.
> 
> V10:
> * Used _relaxed() versions of readl() & writel()
> 
> V9:
> * Made it dependent on ARCH_TEGRA_194_SOC directly instead of ARCH_TEGRA
> 
> V8:
> * Changed P2U driver file name from pcie-p2u-tegra194.c to phy-tegra194-p2u.c
> 
> V7:
> * None
> 
> V6:
> * Addressed review comments from Thierry
> 
> V5:
> * None
> 
> V4:
> * Rebased on top of linux-next top of the tree
> 
> V3:
> * Replaced spaces with tabs in Kconfig file
> * Sorted header file inclusion alphabetically
> 
> V2:
> * Added COMPILE_TEST in Kconfig
> * Removed empty phy_ops implementations
> * Modified code according to DT documentation file modifications
> 
>  drivers/phy/tegra/Kconfig            |   7 ++
>  drivers/phy/tegra/Makefile           |   1 +
>  drivers/phy/tegra/phy-tegra194-p2u.c | 120 +++++++++++++++++++++++++++
>  3 files changed, 128 insertions(+)
>  create mode 100644 drivers/phy/tegra/phy-tegra194-p2u.c

Acked-by: Thierry Reding <treding@...dia.com>

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