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Sun, 21 Jun 2026 06:30:59 -0700 (PDT) X-Received: by 2002:a17:902:e881:b0:2c6:e1f7:b4ce with SMTP id d9443c01a7336-2c718f3f09amr126472395ad.28.1782048659143; Sun, 21 Jun 2026 06:30:59 -0700 (PDT) Received: from [192.168.29.32] ([49.43.225.115]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2c7439f9026sm48007125ad.53.2026.06.21.06.30.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 21 Jun 2026 06:30:56 -0700 (PDT) Message-ID: <9f89a2d4-e29e-4dea-832e-622bed566bc3@oss.qualcomm.com> Date: Sun, 21 Jun 2026 19:00:49 +0530 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 07/13] clk: qcom: dispcc-qcm2290: Update GDSC *wait_val values and flags To: Dmitry Baryshkov Cc: Bjorn Andersson , Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Konrad Dybcio , Loic Poulain , Brian Masney , Ajit Pandey , Taniya Das , Jagadeesh Kona , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260604-shikra-dispcc-gpucc-v4-0-8204f1029311@oss.qualcomm.com> <20260604-shikra-dispcc-gpucc-v4-7-8204f1029311@oss.qualcomm.com> <66iobdkznpqqy7twf4fhu33m7mclnndlrjc4urt2em6tfe6gp4@r7wd2gnzsjoa> Content-Language: en-US From: Imran Shaik In-Reply-To: <66iobdkznpqqy7twf4fhu33m7mclnndlrjc4urt2em6tfe6gp4@r7wd2gnzsjoa> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjIxMDEzNyBTYWx0ZWRfX3ZCyQi1AOY8T fXbP3hBwWiRBBfm2coCTTEArT1uFYLsJ+6PE6QF2h9lDop+VihfHWAw6J1HyliMHcLOnEZyEeaG 0fMJQq4gbCwDMHNpw4HOE00iUpY/lwnVtSqwM+tbdfv+7zLVyu+Jm9zVGy1NNqEQ9FGt08Kv1sE 3oZfuVnPI/u57m70R9bOh4b2cEHc3qWf1fBhmCcDsmRNKFtS17+LXk1+XzkciFuf//GQP5LbsAe U+UtVj3gDUQdLfYtfnN/SawVY+xSX6IPMR0xPThBPmqdmFBHrWx+07VkWTFxEiGTX0XNLf96vNO QIXGiWD7OgFgelCyOIoLh/TmfT4ooOgUKHSmzuu0R1fHTfLppqLY0xPdFFRcEwR1T3cIrsVSW9S YYHtdtsromILppDgdaiGgyphNacDob6hrDb7fjj52O1Ps9eoAVvYwkOPkbmRAXwHuX4csZdjk4N jdzGIWgiYgIjjWQSP+w== X-Authority-Analysis: v=2.4 cv=MtFiLWae c=1 sm=1 tr=0 ts=6a37e794 cx=c_pps a=JL+w9abYAAE89/QcEU+0QA==:117 a=HwFTmRh04JSsUSWzyQ2edw==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=EUspDBNiAAAA:8 a=-FpPnIJ-wZmyQQF_TeYA:9 a=QEXdDO2ut3YA:10 a=324X-CrmTo6CU4MGRt3R:22 X-Proofpoint-GUID: JjWzF5CCUsFvErdHeLEo3_PNuFGsE231 X-Proofpoint-Spam-Info: AW1haW4tMjYwNjIxMDEzNyBTYWx0ZWRfX3M/JzQ6lApg6 rAlEhFUdZ5+luy5jn/cDF+/5JJyuuJ9iD1GSy9HlbxIN5G2ZlrEcn1q6lVwzYN4wDVqZbg6cTuh /g/OdgzPNUt9nOEyYzBe2Y0mP+bijg4= X-Proofpoint-ORIG-GUID: JjWzF5CCUsFvErdHeLEo3_PNuFGsE231 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-21_01,2026-06-18_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 malwarescore=0 bulkscore=0 clxscore=1015 phishscore=0 adultscore=0 spamscore=0 priorityscore=1501 suspectscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606210137 On 06-06-2026 04:57 pm, Dmitry Baryshkov wrote: > On Thu, Jun 04, 2026 at 10:56:13AM +0530, Imran Shaik wrote: >> Update the QCM2290 DISPCC GDSC wait_val fields to match the hardware >> default values. Incorrect settings can cause the GDSC FSM to stuck, >> leading to power on/off failures. And update GDSC flags to retain the >> registers, and poll for the CFG GDSCR, and switch between HW/SW mode >> dynamically as per the latest convention. > > Too many ands for one patch. Zero explanation (other than 'latest > convention'. Which convention? The flags describe hardware behaviour, > not conventions). > Sure, I will split the patches and update the commit text with the justification details. Thanks, Imran >> >> Signed-off-by: Imran Shaik >> --- >> drivers/clk/qcom/dispcc-qcm2290.c | 5 ++++- >> 1 file changed, 4 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/clk/qcom/dispcc-qcm2290.c b/drivers/clk/qcom/dispcc-qcm2290.c >> index f5dbd19d0a0334362a44f91a69229cb0f018f309..4c1eef79f41b6907fe79f2b18bcb5f6160c74a43 100644 >> --- a/drivers/clk/qcom/dispcc-qcm2290.c >> +++ b/drivers/clk/qcom/dispcc-qcm2290.c >> @@ -468,11 +468,14 @@ static const struct qcom_reset_map disp_cc_qcm2290_resets[] = { >> >> static struct gdsc mdss_gdsc = { >> .gdscr = 0x3000, >> + .en_rest_wait_val = 0x2, >> + .en_few_wait_val = 0x2, >> + .clk_dis_wait_val = 0xf, >> .pd = { >> .name = "mdss_gdsc", >> }, >> .pwrsts = PWRSTS_OFF_ON, >> - .flags = HW_CTRL, >> + .flags = HW_CTRL_TRIGGER | POLL_CFG_GDSCR | RETAIN_FF_ENABLE, >> }; >> >> static struct gdsc *disp_cc_qcm2290_gdscs[] = { >> >> -- >> 2.34.1 >> >