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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b8037f3ffbasm3359067666b.61.2025.12.29.04.59.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 29 Dec 2025 04:59:53 -0800 (PST) Message-ID: <6ea96ce8-680c-45ed-a48c-5a38394ae7fd@oss.qualcomm.com> Date: Mon, 29 Dec 2025 13:59:51 +0100 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 v2 2/2] arm64: dts: qcom: sdm845-db845c: Use pad fn instead of defining own To: David Heidelberg , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Vladimir Zapolskiy , Robert Foss Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, phone-devel@vger.kernel.org References: <20251217-sdm845-mclk-v2-0-7028c2d09145@ixit.cz> <20251217-sdm845-mclk-v2-2-7028c2d09145@ixit.cz> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjI5MDEyMCBTYWx0ZWRfX8+t21KCpO49U 9EW4Q05A8+zspZaZa0i0vIonElwrBqKc6Wzaz2ETjem6QDmp8X2g3KoYMCo1lqsy7P+pYIyqyFT ajwp2bgHjNk/hG3G3xd18pUgBdlQCF0+dVvx/721kzb8Usnc/saJvq0HyZl8nIPVy9MQ7vJu7dk KHirpQm5ZsJ+FSOsfwf79t+IS2cJYpntkWKaV+iK/967gC24M1YCE7/E/pAHxYfbMYHWqFZB8cL vGA7va/HmssovAlLN0FI0t0NYq4kU9+DtYib9hINCdMyJ9Kan7g/391ZcFG3AkyCMRzMHcz/7Pa KmDkt4y6oWMoAYTUI4pPY6/oiGfFp6plQmVvfzu+CoYpVIei0O37UkTEeMABs+qiiyIEk5oHCDl PnOsGtjFgzVNAn4ROYZi3YUyMthLJkYdo6aEV+KYXVMDEjbNjHwsAJupzPsIS6KEMMeT8mdYYfg zDHhdbamvwO1/Qzmczw== X-Proofpoint-ORIG-GUID: 5puzRBAXfGhCL2e7X3vU3_nO6DJ9rmiC X-Proofpoint-GUID: 5puzRBAXfGhCL2e7X3vU3_nO6DJ9rmiC X-Authority-Analysis: v=2.4 cv=CK4nnBrD c=1 sm=1 tr=0 ts=69527b4b cx=c_pps a=JbAStetqSzwMeJznSMzCyw==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=K3Vwq5XXvu027sOeNUMA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=uxP6HrT_eTzRwkO_Te1X:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-29_04,2025-12-29_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 impostorscore=0 lowpriorityscore=0 clxscore=1015 spamscore=0 adultscore=0 suspectscore=0 priorityscore=1501 phishscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2512290120 On 12/22/25 3:01 PM, David Heidelberg wrote: > On 18/12/2025 13:25, Konrad Dybcio wrote: >> On 12/17/25 12:39 PM, David Heidelberg via B4 Relay wrote: >>> From: David Heidelberg >>> >>> Instead of defining own pad function for master clock, pick one offered >>> by sdm845 device-tree include. >> >> I'm a little bitter about the wording - the pad function here is "cam_mclk", >> whereas what you're doing is inheriting a common pinmux/pincfg node that >> refers to that function >> >> [...] >> >>> -        mclk0-pins { >>> -            pins = "gpio13"; >>> -            function = "cam_mclk"; >>> - >>> -            drive-strength = <16>; >> >> This patch changes the drive-strength (16 -> 2 mA) >> >> FWIW it's 2 on reference designs and Sony boards, check your >> downstream kernel > > I don't have any. I'm fine with this patch not getting applied, but I'll CC Robert who added the support, maybe he can verify. FWIW this can be verified at runtime as well (running downstream) with cat /sys/kernel/debug/gpio Konrad