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Tue, 13 Oct 2026 08:49:29 -0700 (PDT) X-Received: by 2002:a05:6122:6857:10b0:5e9:6763:368a with SMTP id 71dfb90a1353d-5e9676339a6mr439146e0c.2.1791906569404; Tue, 13 Oct 2026 08:49:29 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c31a9a74c48sm605802866b.43.2026.10.13.08.49.26 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 13 Oct 2026 08:49:28 -0700 (PDT) Message-ID: <77b5681e-21e7-4a93-ab35-15554f7637c8@oss.qualcomm.com> Date: Tue, 13 Oct 2026 17:49:25 +0200 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 v7 02/11] arm64: dts: qcom: ipq5210: Introduce RDP504 common DT file To: Kathiravan Thirumoorthy , Varadarajan Narayanan , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Abel Vesa Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20261012-08-dts-v7-0-77bd3d68d850@oss.qualcomm.com> <20261012-08-dts-v7-2-77bd3d68d850@oss.qualcomm.com> <5cfe6767-9097-4005-a78c-3066a2aef1f7@oss.qualcomm.com> <3fff91c4-b831-410f-a151-847ea407acb2@oss.qualcomm.com> <78480c25-6d83-4e70-a9f6-826760046cda@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <78480c25-6d83-4e70-a9f6-826760046cda@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=FuqQbGrq c=1 sm=1 tr=0 ts=6ace530a cx=c_pps a=1Os3MKEOqt8YzSjcPV0cFA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=EUspDBNiAAAA:8 a=3JqDGoTLaDOw8MreyBMA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=hhpmQAJR8DioWGSBphRh:22 X-Proofpoint-GUID: RRBfo9E5s_PqgezZU371_VJMYJ9VhcMA X-Proofpoint-ORIG-GUID: RRBfo9E5s_PqgezZU371_VJMYJ9VhcMA X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDEzMDA2MiBTYWx0ZWRfX34rlIkWlU3XR VcZ9Hxv/xBXXsQ3cCmix95lDjJCRlc6/xVVFCD/uz5b7hYf3SPWQF6n67NfiVAu04HkUI16Gehz NveMi5LwwJEbe53O6e977B60ZzZ5NTiDYHaKz02UeiHCMP5k/X83IMP01Y6Xe+AW6QjJRzryo9h VdtsZdImP7C/BDwkexHcNRxMpi5TVVN3NTF3ILN0VDEGyEqdxEQKAMCldTrhaeRaJCIht/QiRCy OVSPZWztMqKHJtoIaPjDvEUckfYMw+Gf4enmnHDycLEP3IrNWEjAJQfk/qNCS8qTaYo8RqQrHtI PlB4vVN5g5mAtFirGY5DpJ11ho324iisfGCQUrYK6uNhf+rZ6oVX2TuVzWf/VbwccO4E4qAG8IK lNLw03C15wGOADmQlTGA7XB+C1UEp6UfHvQvCFRQ6iozyOl992rqzbt5IxqdsEQY/hmbFU1yPz4 yQgfUHHoVXGZ+aNjEWg== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDEzMDA2MiBTYWx0ZWRfX9d0yVYaOQKxk eGQdvy+P0w9STb6XE+35sfQ901xJue9f+2tW1XlaaQcagnsfpm9gc938/8C42e7ds95kcmrolP2 YNPapyA6FLEDJdsiEkzjW7DHtl01Pj8= 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=2026-10-13_01,2026-10-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 malwarescore=0 adultscore=0 phishscore=0 suspectscore=0 priorityscore=1501 bulkscore=0 spamscore=0 impostorscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610130062 On 10/13/26 5:16 PM, Kathiravan Thirumoorthy wrote: > > On 10/13/2026 8:11 PM, Konrad Dybcio wrote: >> On 10/13/26 3:14 PM, Kathiravan Thirumoorthy wrote: >>> On 10/12/2026 12:53 PM, Varadarajan Narayanan wrote: >>>> RDP504 has USB, PCIe and SPI NAND devices populated. EMMC and NAND >>>> share the GPIOs. The board has to be reworked to change from EMMC >>>> to NAND variant. Rename ipq5210-rdp504.dts as ipq5210-rdp504-common.dtsi >>>> and include it in variant specific DTS file. >>>> >>>> Describe the fixed USB regulators, PCIe reset GPIOs, QPIC SPI NAND flash >>>> and required pinctrl states. Enable QPIC BAM, USB and PCIe for the board. >>>> >>>> Signed-off-by: Varadarajan Narayanan >>>> --- >>>>    .../arm64/boot/dts/qcom/ipq5210-rdp504-common.dtsi | 209 +++++++++++++++++++++ >>>>    arch/arm64/boot/dts/qcom/ipq5210-rdp504.dts        |  66 +------ >>>>    2 files changed, 211 insertions(+), 64 deletions(-) >>> [...] >>> >>>> + >>>> +&qpic_bam { >>>> +    status = "okay"; >>>> +}; >>> NAND is the only consumer of this BAM. Should we move it to NAND DTS? >> Can we enable it by default? (i.e. is there any reason not to?) > > I don't see any reason for not enabling this by default . Since nand is the only consumer of the BAM DMA, we enable both nodes together to keep the unneeded devices in disabled state. The first sentence says "we can", the second says "we can't" Konrad