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[66.131.184.68]) by smtp.gmail.com with ESMTPSA id z2sm2898711qkg.22.2021.03.05.14.18.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 05 Mar 2021 14:18:28 -0800 (PST) Subject: Re: [PATCH] drm/msm/dsi: support CPHY mode for 7nm pll/phy To: Rob Herring Cc: freedreno@lists.freedesktop.org, Rob Clark , Sean Paul , David Airlie , Daniel Vetter , Douglas Anderson , Kalyan Thota , Jordan Crouse , "Kristian H. Kristensen" , Sam Ravnborg , Rikard Falkeborn , Emil Velikov , Viresh Kumar , Rajendra Nayak , Konrad Dybcio , Dmitry Baryshkov , Dave Airlie , "open list:DRM DRIVER FOR MSM ADRENO GPU" , "open list:DRM DRIVER FOR MSM ADRENO GPU" , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , open list References: <20210215162805.21481-1-jonathan@marek.ca> <20210305214802.GA701567@robh.at.kernel.org> From: Jonathan Marek Message-ID: Date: Fri, 5 Mar 2021 17:17:10 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <20210305214802.GA701567@robh.at.kernel.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/5/21 4:48 PM, Rob Herring wrote: > On Mon, Feb 15, 2021 at 11:27:44AM -0500, Jonathan Marek wrote: >> Add the required changes to support 7nm pll/phy in CPHY mode. >> >> This adds a "qcom,dsi-phy-cphy-mode" property for the PHY node to enable >> the CPHY mode. >> >> Signed-off-by: Jonathan Marek >> --- >> .../devicetree/bindings/display/msm/dsi.txt | 1 + >> drivers/gpu/drm/msm/dsi/dsi.c | 12 +-- >> drivers/gpu/drm/msm/dsi/dsi.h | 6 +- >> drivers/gpu/drm/msm/dsi/dsi.xml.h | 2 + >> drivers/gpu/drm/msm/dsi/dsi_host.c | 34 +++++-- >> drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 49 +++++++++- >> drivers/gpu/drm/msm/dsi/phy/dsi_phy.h | 3 + >> drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 89 ++++++++++++++----- >> drivers/gpu/drm/msm/dsi/pll/dsi_pll.c | 4 +- >> drivers/gpu/drm/msm/dsi/pll/dsi_pll.h | 5 +- >> drivers/gpu/drm/msm/dsi/pll/dsi_pll_7nm.c | 71 +++++++++------ >> 11 files changed, 210 insertions(+), 66 deletions(-) >> >> diff --git a/Documentation/devicetree/bindings/display/msm/dsi.txt b/Documentation/devicetree/bindings/display/msm/dsi.txt >> index b9a64d3ff184..7ffc86a9816b 100644 >> --- a/Documentation/devicetree/bindings/display/msm/dsi.txt >> +++ b/Documentation/devicetree/bindings/display/msm/dsi.txt >> @@ -124,6 +124,7 @@ Required properties: >> Optional properties: >> - qcom,dsi-phy-regulator-ldo-mode: Boolean value indicating if the LDO mode PHY >> regulator is wanted. >> +- qcom,dsi-phy-cphy-mode: Boolean value indicating if CPHY mode is wanted. > > This is board or SoC dependent? The latter should be implied by an SoC > specific compatible. > It is board specific, 7nm dsi phy can operate in either D-PHY or C-PHY mode.