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Sun, 23 Aug 2026 05:55:21 -0700 (PDT) Received: from hu-mdsor-hyd.qualcomm.com ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-14186173199sm15411282c88.9.2026.08.23.05.55.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 23 Aug 2026 05:55:21 -0700 (PDT) Date: Sun, 23 Aug 2026 18:25:11 +0530 From: Mohit Dsor To: Dmitry Baryshkov Cc: Sunyun Yang , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Vinod Koul , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, venkata.valluru@oss.qualcomm.com, vishnu.saini@oss.qualcomm.com, Jessica Zhang Subject: Re: [PATCH v10 2/2] drm/bridge: Add Lontium LT9611C(EX/UXD) MIPI DSI to HDMI driver Message-ID: References: <20260808-lt9611c-v7-v10-0-ee90a136d82a@oss.qualcomm.com> <20260808-lt9611c-v7-v10-2-ee90a136d82a@oss.qualcomm.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Proofpoint-Spam-Info: AW1haW4tMjYwODIzMDExNiBTYWx0ZWRfX8AETxFC4sMcp 5KXM9JffIkEpDASPxGEulpO37AiUjXr9JAFbei0SHNVN81y37phX3dfjTt+CBL2D6vQv+1KAWiM OnXaG/qH6nWjgQEVFrzJR27ialS6a9c= X-Authority-Analysis: v=2.4 cv=HYckiCE8 c=1 sm=1 tr=0 ts=6a8aedbb cx=c_pps a=vVfyC5vLCtgYJKYeQD43oA==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=kj9zAlcOel0A:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=EUspDBNiAAAA:8 a=Kz8-B0t5AAAA:8 a=pMoGBK1uSPhNkBhojBIA:9 a=CjuIK1q_8ugA:10 a=rl5im9kqc5Lf4LNbBjHf:22 a=RuZk68QooNbwfxovefhk:22 X-Proofpoint-ORIG-GUID: d5jmh1lc6iGHiYRTrnYq2hiV8iR9dL3p X-Proofpoint-GUID: d5jmh1lc6iGHiYRTrnYq2hiV8iR9dL3p X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODIzMDExNiBTYWx0ZWRfX3VpR2Zuqs0a5 wT3PRRDhRQ0KTNG4bRKuSVRh4oH9tQYSpv/Fz8OQVsokM6JS3hoEGZUVE1bbOtK2VxPEsbZDJIU hJIKqD7+Nj+jXxuctP7BbsH++nQqo7llOCfuFmG1EvI3RcSOaobAQQVhs9/OwjPp0ilk56vlwW5 tIWD0zRN51B9r8le+Qk0ll8G/m+sXWo4jySS5E4f3iM98JxzPr+ZN9QMUljgHdTS11eNwGer06L 2B38QBppeEKg+FP4neqDoRHGSrXQgb/rPYPYKk5ibgGi6Mp5TU3NHx3FTEfPqsoDP0P6DkP1sMO ZQcB8XalMJsbNoZDnRZ6Ka/bChplD9UTNgcH2SJdXUBX/3LF3jglCixnHmWJZJXJE+BARniIOmf izx9WsQJie6as5ZEl606DHHtDDfiKH0CakTqiL/o4eUg5OnfMr/ak88TKw1KP/T2B0qFm5SF+VL 71CtBGVQifHlWCFtk3A== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-23_04,2026-08-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 malwarescore=0 spamscore=0 phishscore=0 impostorscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 clxscore=1015 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608230116 On Wed, Aug 19, 2026 at 12:49:53AM +0300, Dmitry Baryshkov wrote: > On Sat, Aug 08, 2026 at 01:37:51PM +0530, mohit.dsor@oss.qualcomm.com wrote: > > From: Sunyun Yang > > > > LT9611C(EX/UXD) is an I2C-controlled chip that Receiver signal/dual port > > mipi dsi and output hdmi, differences in hardware features: > > - LT9611C: supports 1-port mipi dsi to hdmi 1.4 > > - LT9611EX: supports 2-port mipi dsi to hdmi 1.4 > > - LT9611UXD: supports 2-port mipi dsi to hdmi 1.4/2.0 > > > > Signed-off-by: Sunyun Yang > > Co-developed-by: Mohit Dsor > > Signed-off-by: Mohit Dsor > > --- > > Documentation/ABI/testing/sysfs-lontium-firmware | 10 + > > drivers/gpu/drm/bridge/Kconfig | 18 + > > drivers/gpu/drm/bridge/Makefile | 1 + > > drivers/gpu/drm/bridge/lontium-lt9611c.c | 1283 ++++++++++++++++++++++ > > 4 files changed, 1312 insertions(+) > > > > diff --git a/Documentation/ABI/testing/sysfs-lontium-firmware b/Documentation/ABI/testing/sysfs-lontium-firmware > > new file mode 100644 > > index 000000000000..8700933ba0f0 > > --- /dev/null > > +++ b/Documentation/ABI/testing/sysfs-lontium-firmware > > @@ -0,0 +1,10 @@ > > +What: /sys/bus/i2c/drivers//.../firmware > > +Date: July 2026 > > +KernelVersion: 7.3 > > +Contact: Mohit Dsor > > +Description: > > + Read: Returns the current firmware version loaded on the > > + Lontium bridge chip in hex format (e.g. "0x0105"). > > + > > + Write: Triggers a firmware upgrade of the chip using the > > + firmware file loaded via the firmware loader. > > diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig > > index 4a57d49b4c6d..d1597548e578 100644 > > --- a/drivers/gpu/drm/bridge/Kconfig > > +++ b/drivers/gpu/drm/bridge/Kconfig > > @@ -177,6 +177,24 @@ config DRM_LONTIUM_LT9611 > > HDMI signals > > Please say Y if you have such hardware. > > > > +config DRM_LONTIUM_LT9611C > > + tristate "Lontium LT9611C DSI/HDMI bridge" > > + select SND_SOC_HDMI_CODEC if SND_SOC > > + depends on OF && I2C > > + select CRC8 > > + select FW_LOADER > > + select DRM_PANEL_BRIDGE > > + select DRM_KMS_HELPER > > + select DRM_MIPI_DSI > > + select DRM_DISPLAY_HELPER > > + select DRM_DISPLAY_HDMI_STATE_HELPER > > + select REGMAP_I2C > > + help > > + Driver for the Lontium LT9611C(EX/UXD) DSI to HDMI bridge chip. > > + It converts single or dual MIPI DSI and I2S signals to HDMI > > + output. Supports HDMI 1.4 (LT9611C/EX) and HDMI 2.0 (LT9611UXD). > > + Say Y if you have hardware using this chip. > > + > > config DRM_LONTIUM_LT9611UXC > > tristate "Lontium LT9611UXC DSI/HDMI bridge" > > select SND_SOC_HDMI_CODEC if SND_SOC > > diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile > > index 15cc821d85b7..f322f3f89f6b 100644 > > --- a/drivers/gpu/drm/bridge/Makefile > > +++ b/drivers/gpu/drm/bridge/Makefile > > @@ -16,6 +16,7 @@ obj-$(CONFIG_DRM_ITE_IT6505) += ite-it6505.o > > obj-$(CONFIG_DRM_LONTIUM_LT8912B) += lontium-lt8912b.o > > obj-$(CONFIG_DRM_LONTIUM_LT9211) += lontium-lt9211.o > > obj-$(CONFIG_DRM_LONTIUM_LT9611) += lontium-lt9611.o > > +obj-$(CONFIG_DRM_LONTIUM_LT9611C) += lontium-lt9611c.o > > obj-$(CONFIG_DRM_LONTIUM_LT9611UXC) += lontium-lt9611uxc.o > > obj-$(CONFIG_DRM_LONTIUM_LT8713SX) += lontium-lt8713sx.o > > obj-$(CONFIG_DRM_LVDS_CODEC) += lvds-codec.o > > diff --git a/drivers/gpu/drm/bridge/lontium-lt9611c.c b/drivers/gpu/drm/bridge/lontium-lt9611c.c > > new file mode 100644 > > index 000000000000..e6887f2c89a6 > > --- /dev/null > > +++ b/drivers/gpu/drm/bridge/lontium-lt9611c.c > > @@ -0,0 +1,1283 @@ > > +// SPDX-License-Identifier: GPL-2.0 > > +/* > > + * Copyright (C) 2026 Lontium Semiconductor, Inc. > > + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. > > + */ > > + > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > + > > +#define FW_SIZE (64 * 1024) > > +#define LT_PAGE_SIZE 256 > > +#define FW_FILE "lt9611c_fw.bin" > > Lontium/lt9611c_fw.bin > > With that fixed: > > > Reviewed-by: Dmitry Baryshkov Thanks Dmitry, will fix it and add R/B tag. > > > > -- > With best wishes > Dmitry