From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kishon Vijay Abraham I Subject: Re: [PATCH 30/37] dt-bindings: PCI: dra7xx: Add dt bindings to enable legacy mode Date: Thu, 16 Feb 2017 14:03:57 +0530 Message-ID: <58A563F5.5040504@ti.com> References: <1484216786-17292-1-git-send-email-kishon@ti.com> <1484216786-17292-31-git-send-email-kishon@ti.com> <20170118214603.qnewy3sm6sgw7lbg@rob-hp-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20170118214603.qnewy3sm6sgw7lbg@rob-hp-laptop> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Rob Herring Cc: devicetree@vger.kernel.org, Joao Pinto , Arnd Bergmann , linux-doc@vger.kernel.org, Jingoo Han , linux-arm-msm@vger.kernel.org, nsekhar@ti.com, linux-kernel@vger.kernel.org, linux-arm-kernel@axis.com, linux-samsung-soc@vger.kernel.org, linux-pci@vger.kernel.org, Bjorn Helgaas , linux-omap@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org List-Id: linux-samsung-soc@vger.kernel.org Hi, On Thursday 19 January 2017 03:16 AM, Rob Herring wrote: > On Thu, Jan 12, 2017 at 03:56:19PM +0530, Kishon Vijay Abraham I wrote: >> Update device tree binding documentation of TI's dra7xx PCI >> controller to include property for enabling legacy mode. >> >> Signed-off-by: Kishon Vijay Abraham I >> --- >> Documentation/devicetree/bindings/pci/ti-pci.txt | 4 ++++ >> 1 file changed, 4 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/pci/ti-pci.txt b/Documentation/devicetree/bindings/pci/ti-pci.txt >> index 62f5f59..ed85e8e 100644 >> --- a/Documentation/devicetree/bindings/pci/ti-pci.txt >> +++ b/Documentation/devicetree/bindings/pci/ti-pci.txt >> @@ -39,6 +39,10 @@ DEVICE MODE >> - interrupts : one interrupt entries must be specified for main interrupt. >> - num-ib-windows : number of inbound address translation windows >> - num-ob-windows : number of outbound address translation windows >> + - syscon-legacy-mode: phandle to the syscon dt node. The 1st argument should >> + contain the register offset within syscon and the 2nd >> + argument should contain the bit field for setting the >> + legacy mode > > What's legacy mode? It's the name of the bit-field defined in TRM used to add workaround for errata id i870 (See [PATCH 29/37] PCI: dwc: dra7xx: Workaround for errata id i870 of this series). I'm not sure what it does internally. Thanks Kishon