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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b983387103asm779356066b.57.2026.03.25.04.39.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 25 Mar 2026 04:39:05 -0700 (PDT) Message-ID: <39da1661-bad5-47a0-b50a-52678e1766f9@oss.qualcomm.com> Date: Wed, 25 Mar 2026 12:39:02 +0100 Precedence: bulk X-Mailing-List: netdev@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-shift-axolotl: Enable NFC To: Krzysztof Kozlowski , David Heidelberg , Konrad Dybcio , Alexander Martinz Cc: Petr Hodina , biemster , netdev@vger.kernel.org, linux-arm-msm@vger.kernel.org, Rob Herring , oe-linux-nfc@lists.linux.dev, Krzysztof Kozlowski , devicetree@vger.kernel.org, Conor Dooley , linux-kernel@vger.kernel.org, phone-devel@vger.kernel.org, Bjorn Andersson References: <20260324-oneplus-nfc-v2-0-3eef052c9bc6@ixit.cz> <20260324-oneplus-nfc-v2-2-3eef052c9bc6@ixit.cz> <9d9ec994-c954-445d-97b2-772614d66f35@oss.qualcomm.com> <041766dd-422e-40e1-9e5d-c220580871f5@ixit.cz> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzI1MDA4MiBTYWx0ZWRfX+jXSZjKa829a 0fRGNNpgesJ8WGI1EbAHGPDD810Nr4/mN5+nr2Ntxnx8sCRogBfQQoXng9rjCw+ACMzWVTmEWU0 rAiTztOJEGmivIRFwul4sdWUfWHpfaNve+Do9t92d+yz1YmkZqqpiDSb8CUbK4kC9/2QZ/w+SsH x4QXHsVMYHVM7CrYlW5Ah5GWSPgiFBX7S2sRJx+A2W3Ljjx4OO6X5m33hz79WQ4gQH5Fb5mvJ+S xQ2gCnSD+FFYQPBRalQAgU8/NESRUEQWaS2mfO5aK3lU7Cyqok3v7yngsCu8xakL0UVQQw4lj91 e+1P1Z9bzjCoVvp4qZ7oulekZ18uRlV/jqgqTltmnhWS+OOA83vcZEq7Ym6a6XzbgsbaKDyZOej 6Mlh52KTrAGAxwkBf/Xg48MGyhuW4KUo0sxj5wi55oyxiKuIClCsaZziRWEfcPxPsbKsQBaA02C CxzaR2YlhB9k17IOaSQ== X-Authority-Analysis: v=2.4 cv=VODQXtPX c=1 sm=1 tr=0 ts=69c3c95b cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=nP0QM_pW1fVPP_CoLIUA:9 a=QEXdDO2ut3YA:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-GUID: 9kuEanSciugOk1Gcojpjq6tU8juwJWMd X-Proofpoint-ORIG-GUID: 9kuEanSciugOk1Gcojpjq6tU8juwJWMd 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=2026-03-25_04,2026-03-24_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 lowpriorityscore=0 malwarescore=0 phishscore=0 priorityscore=1501 spamscore=0 impostorscore=0 clxscore=1015 adultscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603250082 On 3/25/26 12:31 PM, Krzysztof Kozlowski wrote: > On 25/03/2026 12:20, Konrad Dybcio wrote: >>> >>>> >>>> FWIW TLMM subnodes are best sorted by pin index (although the file >>>> currently doesn't really do that) as per dts coding style >>> >>> I assume when I group the -pins into -state it doesn't apply anymore? As I don't feel having pins relevant to one device / subsystem all over the place is extra clean. >> > > nfc_int_default: nfc-int-default-state { > pins = "gpio63"; > }; > > nfc_enable_default: nfc-enable-default-state { > pins = "gpio12", "gpio62"; > }; > > sde_dsi_active: sde-dsi-active-state { > pins = "gpio6", "gpio11"; > } > > Let's imagine future possible implementation of DTS coding style > linter/checkpatch. How it would sort the nodes? Either by node name or > the first value in "pins", this this would be: > > sde_dsi_active: sde-dsi-active-state { > pins = "gpio6", "gpio11"; > } > > nfc_enable_default: nfc-enable-default-state { > pins = "gpio12", "gpio62"; > }; > > nfc_int_default: nfc-int-default-state { > pins = "gpio63"; > }; > > So that's how you code. Less work for future linter/checkpatch. > > The trouble is that "pins" property sorting can result in nodes being > spread all over, imagine: > > nfc_enable_default: nfc-enable-default-state { > pins = "gpio5", "gpio62"; > // ^^^^^ DIFFERENCE! > }; > > sde_dsi_active: sde-dsi-active-state { > pins = "gpio6", "gpio11"; > } > > nfc_int_default: nfc-int-default-state { > pins = "gpio63"; > }; > > That's why I would propose to keep everything sorted by node name, but I > am fine with both choices. Qualcomm maintainers decide about such > detailed style they want to impose. At LPC we agreed that the last sentence should not be the case ;) I think I'm fine with "children by name" then.. Konrad