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Wed, 04 Mar 2026 22:13:53 -0800 (PST) X-Received: by 2002:a17:902:ea08:b0:2ae:44db:56ed with SMTP id d9443c01a7336-2ae6aa20d76mr46975515ad.15.1772691233086; Wed, 04 Mar 2026 22:13:53 -0800 (PST) Received: from [10.217.217.147] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ae5e1699c9sm68679885ad.10.2026.03.04.22.13.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 04 Mar 2026 22:13:52 -0800 (PST) Message-ID: <38302cbf-d832-49de-8e8e-06ca3dd1ce6f@oss.qualcomm.com> Date: Thu, 5 Mar 2026 11:43:47 +0530 Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 5/5] clk: qcom: dispcc[01]-sa8775p: Fix DSI byte clock rate setting To: Konrad Dybcio , Bjorn Andersson , Michael Turquette , Stephen Boyd , Dmitry Baryshkov , Luca Weiss , Dmitry Baryshkov , Ajit Pandey , Taniya Das , Jagadeesh Kona Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Konrad Dybcio References: <20260304-topic-dsi_byte_fixup-v1-0-b79b29f83176@oss.qualcomm.com> <20260304-topic-dsi_byte_fixup-v1-5-b79b29f83176@oss.qualcomm.com> Content-Language: en-US From: Taniya Das In-Reply-To: <20260304-topic-dsi_byte_fixup-v1-5-b79b29f83176@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: Cu0dV5YkIVe8PyGEGJL7NBkSY7aZsAXX X-Authority-Analysis: v=2.4 cv=Gu9PO01C c=1 sm=1 tr=0 ts=69a91f22 cx=c_pps a=cmESyDAEBpBGqyK7t0alAg==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=EUspDBNiAAAA:8 a=0TM1Jmez4aZXe2oQUkEA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=1OuFwYUASf3TG4hYMiVC:22 X-Proofpoint-GUID: Cu0dV5YkIVe8PyGEGJL7NBkSY7aZsAXX X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzA1MDA0NiBTYWx0ZWRfX8RgPxUcNE24k 9GJ7QXWv2woUmShC9wOya7XP+3JF2vi4WOPuyGQbvTQgCWVCeq9tGVYl34gqaYd3qoWCm5ihdvi jT6Ml6WCM8Qc4638Xq5++xhSSkNhIwULNuOg3e6voXtEsf83KwujAN8y0PmI9mF1pzsUqM0wKhT P73ZOuz/n8iQJxq2YMVWe/a95FV4ETu4tCRm5ShU+U2rjIhRTJDEYKNnPKSD3L+0as+dE2EG7E+ 92U4laBBWZEzNbOJ7p4zK8/tZq1gmrpE4bi2et6u0BlOhl974sPZ2B1sgIHLw6z1vKJwUvNoOgI ZqZhubEzcFJe250B3lPQJy0Emav7R9y48RYJXqtWa56KlOxPwhhrqYjvklhcqz8xn1FSZghQdcm WI9fhrBCP9TU1IdNZcqimV6/q+JX0Js3638G68Z5IPrsr/M2EeZl0Dp6smsMdpgo6kRBVoq7fP0 Mh5Tiga7HqCzW4eqOyg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-05_01,2026-03-04_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 lowpriorityscore=0 suspectscore=0 phishscore=0 adultscore=0 impostorscore=0 clxscore=1015 priorityscore=1501 bulkscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603050046 On 3/4/2026 7:18 PM, Konrad Dybcio wrote: > The clock tree for byte_clk_src is as follows: > > ┌──────byte0_clk_src─────┐ > │ │ > byte0_clk byte0_div_clk_src > │ > byte0_intf_clk > > If both of its direct children have CLK_SET_RATE_PARENT with different > requests, byte0_clk_src (and its parent) will be reconfigured. In this > case, byte0_intf should strictly follow the rate of byte0_clk (with > some adjustments based on PHY mode). > > Remove CLK_SET_RATE_PARENT from byte0_div_clk_src to avoid this issue. > > Fixes: e700bfd2f976 ("clk: qcom: Add support for Display clock Controllers on SA8775P") > Signed-off-by: Konrad Dybcio > --- > drivers/clk/qcom/dispcc0-sa8775p.c | 2 -- > drivers/clk/qcom/dispcc1-sa8775p.c | 2 -- > 2 files changed, 4 deletions(-) Reviewed-by: Taniya Das -- Thanks, Taniya Das