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Mon, 24 Aug 2026 01:57:14 -0700 (PDT) X-Received: by 2002:a05:6102:6893:b0:74a:b1ee:e21b with SMTP id ada2fe7eead31-77a643461f0mr3515306137.1.1787561834572; Mon, 24 Aug 2026 01:57:14 -0700 (PDT) Received: from [192.168.120.193] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6a59e2ddad2sm7355677a12.30.2026.08.24.01.57.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 24 Aug 2026 01:57:13 -0700 (PDT) Message-ID: <0cc4dcb5-cc90-46cd-9174-029416e7f51d@oss.qualcomm.com> Date: Mon, 24 Aug 2026 10:57:11 +0200 Precedence: bulk X-Mailing-List: oe-linux-nfc@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 3/3] arm64: dts: qcom: qcm6490-fairphone-fp5: add ST21NFCD NFC To: Kristian Brox , oe-linux-nfc@lists.linux.dev Cc: david@ixit.cz, krzk+dt@kernel.org, devicetree@vger.kernel.org, dmitry.baryshkov@oss.qualcomm.com, luca.weiss@fairphone.com, linux-arm-msm@vger.kernel.org, netdev@vger.kernel.org References: <20260818205940.1973944-1-isyourbrainfoss@proton.me> <20260819210906.2500789-1-isyourbrainfoss@proton.me> <20260819210906.2500789-4-isyourbrainfoss@proton.me> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260819210906.2500789-4-isyourbrainfoss@proton.me> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: AKY2Qpu6Rt_5NWLpu8jeRbHFaWNSTRtQ X-Proofpoint-GUID: AKY2Qpu6Rt_5NWLpu8jeRbHFaWNSTRtQ X-Proofpoint-Spam-Info: AW1haW4tMjYwODI0MDA3OCBTYWx0ZWRfXyqDvHsmjS6cC wdZl4FdB64qxNHrSV1tTBHgcVTiwBd8iIJ5WxgdvCumGFSpevnPsRmE7HlvBLLFLCjlnfK9Had4 C3qD6j6LnwuF9FjfLa2SndY8MEHe3RQ= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODI0MDA3OCBTYWx0ZWRfX4tyO9a5alXJI Z3oORwR9wQ880jumaA1UbBdOd/l83ttECC9Jn8jpIyTKpfLrXswn3Clt34WaGvt634Ta8U62L2K PZBGMbFOcqYKnW+LOyI6ggWVdf1ITcUim/zikt5ruUjmNfSu3SsOL4Py9KBzRfFmZnYi24tlm2U DHYBPWHp+gtB2DdMhgWlUyJ6lizEhvq/K1tidYgDyBPX7mqQDAGh2v2kWm1ZGx3t1g/6/foWPdr yH/sWYVkNp6oyvEaEwUlBqg+Rdq3QgX05shGjF3ltkBg2ROgXzyVvza9ruBjE6t5b2x4RIyhaUD uxcKRe+oRUhWW+oITejBL9zagB6Sb47KQzi9kzbVBukXWlIPEtGCLTP/lm9tMrIoWX/EBf7iJos qH8ny0cFvcqIcgHKHF6S1uuLCsKhk/GzFITF3Mmss+P49YwicV323SXRc2XK8IvwEotoKTbOb12 jBHmB//56ltTL+t+yPQ== X-Authority-Analysis: v=2.4 cv=KcvidwYD c=1 sm=1 tr=0 ts=6a8c076b cx=c_pps a=R6oCqFB+Yf/t2GF8e0/dFg==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=EUspDBNiAAAA:8 a=FWA6L-ytD-VELHUIOsEA:9 a=QEXdDO2ut3YA:10 a=TD8TdBvy0hsOASGTdmB-:22 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=2026-08-24_02,2026-08-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 impostorscore=0 adultscore=0 spamscore=0 priorityscore=1501 lowpriorityscore=0 bulkscore=0 clxscore=1015 suspectscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608240078 On 8/19/26 11:09 PM, Kristian Brox wrote: > Enable the ST21NFCD on i2c9 (0x08), IRQ TLMM 41, reset TLMM 38 > active-high. Compatible is st,st21nfcd (raw NCI). > > SYS_CLK is LN_BB_CLK2. VPS_IO is L18B (vreg_l18b). ese-present and > uicc-present follow the public schematic (NFC_SWP1/SWP2: SWP_SE to > SIM1, SWP_UICC to SIM2). Reader path is tested; SE/HCE is not. > > Signed-off-by: Kristian Brox > --- [...] > + nfc_reset_default: nfc-reset-default-state { > + pins = "gpio38"; > + function = "gpio"; > + drive-strength = <2>; > + bias-disable; > + output-high; This line is unnecessary, the driver should assert the pin otherwise Reviewed-by: Konrad Dybcio Konrad