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Wed, 21 Oct 2026 07:07:49 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c468a5625cesm6971266b.39.2026.10.21.07.07.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 21 Oct 2026 07:07:47 -0700 (PDT) Message-ID: Date: Wed, 21 Oct 2026 16:07:45 +0200 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 1/2] arm64: dts: qcom: shikra-iqs-evk: Add LT9611UXD HDMI bridge support To: Mohit Dsor , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, venkata.valluru@oss.qualcomm.com, Jessica Zhang References: <20261015-shikra-work-v5-0-5e075222b60a@oss.qualcomm.com> <20261015-shikra-work-v5-1-5e075222b60a@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20261015-shikra-work-v5-1-5e075222b60a@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIxMDA1NiBTYWx0ZWRfX8GBOHOF6kqqs dj4eJoNuTe8xxFlTlVKhzABqfrqVZJDc57+XoX0W1XPm9kNkWhJRoJ98STf2UlbcLIzEaOw+cYB wD5u43EdkNpbFAmorxEYVncE+ElZABA= X-Authority-Analysis: v=2.4 cv=eJaGH3p1 c=1 sm=1 tr=0 ts=6ad8c738 cx=c_pps a=JIY1xp/sjQ9K5JH4t62bdg==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=EUspDBNiAAAA:8 a=evxpD-9nWyVjaAOWT8gA:9 a=QEXdDO2ut3YA:10 a=tNoRWFLymzeba-QzToBc:22 X-Proofpoint-GUID: 2OlTHJ8ZLRRBJ2QTJM5O8G7cMSE1SL0Q X-Proofpoint-ORIG-GUID: 2OlTHJ8ZLRRBJ2QTJM5O8G7cMSE1SL0Q X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDIxMDA1NiBTYWx0ZWRfXxCB+3KvOB3/D Gx5J0EOqRMGuYvck9cKbrwpy+QWt2H+HNoPs+XawMn+r12M0bsmRupxX1fr+FBm7fMq2KvxiK03 0tR7LsFmRlJBT/2hLwYFr4BM3zAzfm/kkbQcwGzNAkMg7n99cysRBmy9m7ycZid21G7ZxMicIpZ had4xs7PKpPI11lEd3APX+A+Ho/S+ub+e4//StcBWuEsx6gfKoPbz2vcoIhtFs/8YyeUW24A4Mb vC5GeKJeqdX+uOhiSvqce7DS9940z3clv667OFNQaDwGWTnmogfpYBo6J5yGyqxZAT6uzFPEXGW lY8NOMdjOLKrI0VOJL3o5OYVawRsfyw0RAgBvIhtkJnXFZ4zYU40R8HTRgWSmSFC8U3gQUgASn7 OTYIIAkW13xi0gxrKfQLO8dauYXVpKs68O8+Cru2MCJqQk37p5eXzj1ctJC9EjY6vx3DujeOliJ 0AQQGu9WV83IcRfBKTA== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-10-21_03,2026-10-21_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 priorityscore=1501 adultscore=0 spamscore=0 clxscore=1015 bulkscore=0 phishscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610210056 On 10/15/26 11:15 AM, Mohit Dsor wrote: > Enable the Shikra MDSS display subsystem on the Qualcomm Shikra IQS > EVK board and add the Lontium LT9611UXD DSI-to-HDMI bridge node. > > The LT9611UXD is connected via I2C (bus 4, address 0x41), powered by > a GPIO-controlled 3.3V regulator (PM8150 GPIO4) and an always-on 1.8V > rail. Reset is on GPIO76 and interrupt on GPIO85. > > The bridge receives DSI output from MDSS and drives an HDMI-A > connector, with the link wired as: DPU -> DSI0 -> LT9611UXD -> HDMI. > > Regulator and pinctrl labels use generic board-level names > (vreg_disp_3p3, bridge_irq_pin, bridge_rst_pin) to decouple them > from the bridge chip. > > Signed-off-by: Mohit Dsor > --- Reviewed-by: Konrad Dybcio Konrad