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Mon, 19 Oct 2026 23:57:47 -0700 (PDT) Message-ID: <45b92e2c-a310-4bb0-ad8e-2fb5b162fbe1@oss.qualcomm.com> Date: Tue, 20 Oct 2026 08:57:43 +0200 X-Mailing-List: devicetree@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 07/10] clk: qcom: cbf-msm8996: program the MSM8996 Pro post-divider To: Dmitry Baryshkov , Bjorn Andersson , Abel Vesa , Stephen Boyd , Brian Masney , Jerome Brunet , Joonwoo Park , Imran Khan , Rajendra Nayak , Jeffrey Hugo , Maxime Ripard , Vikash Garodia , Dikshita Agarwal , Bryan O'Donoghue , Mauro Carvalho Chehab , Ilia Lin , Loic Poulain , Konrad Dybcio , Yassine Oudjana , Dmitry Baryshkov , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org References: <20261019-msm8998-fix-clocks-v1-0-370949e4d8a0@oss.qualcomm.com> <20261019-msm8998-fix-clocks-v1-7-370949e4d8a0@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20261019-msm8998-fix-clocks-v1-7-370949e4d8a0@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: 3Tfd7MOoP7_4E1tIHfZ2toutAwm4eNv3 X-Authority-Analysis: v=2.4 cv=fb84WEQF c=1 sm=1 tr=0 ts=6ad710ed cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=EUspDBNiAAAA:8 a=RnTLsUR5sZSAZyuXL5kA:9 a=QEXdDO2ut3YA:10 a=ZXulRonScM0A:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDIwMDAyNyBTYWx0ZWRfX1yjGTdhbwnx7 T5lKEo8cB90pirh31ksXfmGPH6r4jUsm0cfn2DvTywMz9KUHca7xR2AGt+UFLyKP9x1k5o4zXVq Iv6aT716LCtCkLzdTsGJnt1CSRQNA8UgK1C3fx+O9rHHpVLu77qKvK66clLjGVrPp1tVR8BqFjN abzxwwGrZ1kodsehmrRUhYjC11eNRH8FIaNiVG01FPAXZpO1jbZurEWGr5fACcYDzz+gIWsZoj6 omKQyJbpfhJz9NnrMv+W9BkH3/kAtUE63xr7Q3FpwnzMcjVdFS4Yr9vQD5PhPuBax/iYdxP5Lmy hdXAq1iXCA09f3uI+X9p3uyhHlNWwgTLgPujF03nh1L411/tQbQ0MM1lp6XMbbbjxtdhj14quSk 3EmlbHlcZ1+/SIvP+GaZE212SFGHx8sWs4oPXAcuDHvbq915dMbpeo/OXbpTv6zaX8rxvOUvuIl ZcWnY00ttt0htOoV+nA== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIwMDAyNyBTYWx0ZWRfX0foq8ZjqBesq W6Weid8gUcEB59qxVvJ7VA8lztV0GxUDj1PxtLYB9h1JfD9gMH4fnF4G6Ff2go+h/lpGVsJEEBC Q4SoCW5kg3zXHVqIzWxHAMap0c+iMqw= X-Proofpoint-ORIG-GUID: 3Tfd7MOoP7_4E1tIHfZ2toutAwm4eNv3 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=2026-10-20_01,2026-10-19_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 malwarescore=0 lowpriorityscore=0 suspectscore=0 adultscore=0 phishscore=0 clxscore=1015 bulkscore=0 spamscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610200027 On 10/19/26 3:41 PM, Dmitry Baryshkov wrote: > On MSM8996 Pro the CBF runs at twice the requested rate below 600 MHz, > at the voltage of the requested rate, and the SoC hangs once the fabric > is allowed to scale down. The Pro post-divider of 4 is only set in the > PLL configuration after clk_alpha_pll_configure() has already > programmed the hardware, so the PLL keeps dividing by 2 while the clock > tree divides its rate by 4. > > Set up the Pro post-divider before the PLL is configured. > > Fixes: bc48641a68dc ("clk: qcom: cbf-msm8996: Add support for MSM8996 Pro") > Signed-off-by: Dmitry Baryshkov > --- Reviewed-by: Konrad Dybcio Konrad