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[24.155.109.49]) by smtp.gmail.com with ESMTPSA id t9sm1548864oie.24.2020.05.07.11.10.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 May 2020 11:10:45 -0700 (PDT) Received: (nullmailer pid 19680 invoked by uid 1000); Thu, 07 May 2020 18:10:44 -0000 Date: Thu, 7 May 2020 13:10:44 -0500 From: Rob Herring To: Ansuel Smith Cc: Bjorn Andersson , Andy Gross , Bjorn Helgaas , Mark Rutland , Stanimir Varbanov , Lorenzo Pieralisi , Andrew Murray , Philipp Zabel , linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 08/11] devicetree: bindings: pci: document PARF params bindings Message-ID: <20200507181044.GA15159@bogus> References: <20200430220619.3169-1-ansuelsmth@gmail.com> <20200430220619.3169-9-ansuelsmth@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200430220619.3169-9-ansuelsmth@gmail.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On Fri, May 01, 2020 at 12:06:15AM +0200, Ansuel Smith wrote: > It is now supported the editing of Tx De-Emphasis, Tx Swing and > Rx equalization params on ipq8064. Document this new optional params. > > Signed-off-by: Ansuel Smith > --- > .../devicetree/bindings/pci/qcom,pcie.txt | 36 +++++++++++++++++++ > 1 file changed, 36 insertions(+) > > diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt > index 6efcef040741..8cc5aea8a1da 100644 > --- a/Documentation/devicetree/bindings/pci/qcom,pcie.txt > +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt > @@ -254,6 +254,42 @@ > - "perst-gpios" PCIe endpoint reset signal line > - "wake-gpios" PCIe endpoint wake signal line > > +- qcom,tx-deemph-gen1: > + Usage: optional (available for ipq/apq8064) > + Value type: > + Definition: Gen1 De-emphasis value. > + For ipq806x should be set to 24. Unless these need to be tuned per board, then the compatible string for ipq806x should imply all these settings. > + > +- qcom,tx-deemph-gen2-3p5db: > + Usage: optional (available for ipq/apq8064) > + Value type: > + Definition: Gen2 (3.5db) De-emphasis value. > + For ipq806x should be set to 24. > + > +- qcom,tx-deemph-gen2-6db: > + Usage: optional (available for ipq/apq8064) > + Value type: > + Definition: Gen2 (6db) De-emphasis value. > + For ipq806x should be set to 34. > + > +- qcom,tx-swing-full: > + Usage: optional (available for ipq/apq8064) > + Value type: > + Definition: TX launch amplitude swing_full value. > + For ipq806x should be set to 120. > + > +- qcom,tx-swing-low: > + Usage: optional (available for ipq/apq8064) > + Value type: > + Definition: TX launch amplitude swing_low value. > + For ipq806x should be set to 120. > + > +- qcom,rx0-eq: > + Usage: optional (available for ipq/apq8064) > + Value type: > + Definition: RX0 equalization value. > + For ipq806x should be set to 4. > + > * Example for ipq/apq8064 > pcie@1b500000 { > compatible = "qcom,pcie-apq8064", "qcom,pcie-ipq8064", "snps,dw-pcie"; > -- > 2.25.1 >