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Wed, 04 Mar 2026 22:16:07 -0800 (PST) X-Received: by 2002:a17:902:e944:b0:2ad:ab2c:d258 with SMTP id d9443c01a7336-2ae6a9e3f1amr44415985ad.14.1772691367023; Wed, 04 Mar 2026 22:16:07 -0800 (PST) Received: from [10.217.217.147] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2adfb5dbac7sm287061035ad.37.2026.03.04.22.16.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 04 Mar 2026 22:16:06 -0800 (PST) Message-ID: Date: Thu, 5 Mar 2026 11:46:01 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 3/5] clk: qcom: dispcc-milos: 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-v1-3-b79b29f83176@oss.qualcomm.com> Content-Language: en-US From: Taniya Das In-Reply-To: <20260304-topic-dsi_byte_fixup-v1-3-b79b29f83176@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=I5Johdgg c=1 sm=1 tr=0 ts=69a91fa8 cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=EUspDBNiAAAA:8 a=-moZBm4D9L3eB_LYtbMA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=zZCYzV9kfG8A:10 a=uG9DUKGECoFWVXl0Dc02:22 X-Proofpoint-ORIG-GUID: FSQaVD6xVLIV32R8hicundvmyFLEQmcD X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzA1MDA0NyBTYWx0ZWRfX4TDQFP7G8Jio 0orqDNrIc7iPpJMxdnXV5BGJJiDkR7fdREpRGAfjC5KyfVaG5kjycXG0zcWHl51fMhd08xRifXi mEWfjKelNbUmOsLUHekWb9sIDUWuIDus7iSW8/R5O5fJqrWVjdt8fuKoTyJgfsKVMXpmzOo0lpp lOud+xOtF4qbG6vjMuYvEYBL241APjcvsPji3BBPYuHmadyMqSCKuRbq31ahsusfmC69xMtOlpe Nl3MNQZEl7P11eRcW1EGUrcyAKdaEMjeJ4pNeRPm+BW2CXODKr00Rqt42wgmUPGlNv2rB5q8Xlt YjblMvB3pPgaTZ9QLDe/eXkux7EQZ6RdE3RXYSgPGU1wdMLvtMHm8VpCXJx7HstBh7WzSsra24d kdglRRJuVyNGeoBIT9+tD/5nkowNWwsyaK52ucmFWn7wtiWSaRvWgej2OydfnxYR0EIYfMzYjHn 2iRZXRS1rWJ72SsaDpQ== X-Proofpoint-GUID: FSQaVD6xVLIV32R8hicundvmyFLEQmcD 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 phishscore=0 priorityscore=1501 bulkscore=0 malwarescore=0 suspectscore=0 adultscore=0 clxscore=1015 impostorscore=0 spamscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603050047 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: f40b5217dce1 ("clk: qcom: Add Display Clock controller (DISPCC) driver for Milos") > Signed-off-by: Konrad Dybcio Reviewed-by: Taniya Das -- Thanks, Taniya Das