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Wed, 14 Oct 2026 08:55:23 -0700 (PDT) X-Received: by 2002:a17:90a:e70c:b0:3ab:1a5:cd2 with SMTP id 98e67ed59e1d1-3ab3ac9b310mr9010695a91.35.1791993321018; Wed, 14 Oct 2026 08:55:21 -0700 (PDT) Received: from [192.168.1.8] ([122.164.80.129]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3ac9307d287sm172932a91.1.2026.10.14.08.55.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 14 Oct 2026 08:55:18 -0700 (PDT) Message-ID: <0d5980c5-57fc-43ab-bcf4-f72f9e36318e@oss.qualcomm.com> Date: Wed, 14 Oct 2026 21:25:11 +0530 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: Konrad Dybcio , 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> <77b5681e-21e7-4a93-ab35-15554f7637c8@oss.qualcomm.com> Content-Language: en-US From: Kathiravan Thirumoorthy In-Reply-To: <77b5681e-21e7-4a93-ab35-15554f7637c8@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE0MDA2MyBTYWx0ZWRfX4lyQwjJVBTiP GUwKNonZsYKDQdi2ej+Us9rfXq1hbY3eJNBAmBuVpxnl0BkZgHy0YjIFsAfiwhmubIv713gE50G o4ky2kPDmVPOmOgf7B3JkqbIoEwFL5J+306gXO4jPOFfMj2peXnBelYjSwwvoqlwafkuQha4rlQ rqcRB+nL7i4ASlANyBZaL6d6rtFeO2FzOTCYvFsDQrwTePilQvToYkuLkK7Z3wv/SH6vccXh2iM WsHREyEonvxr+Mw46It7fB/q5CYNJLofpShfqSL+6IN+eOfmhbz8PKRewEqjeJSiKNIGZ1FkKyh Qrz6LNSx58nnJe+Bz1z9Zn4QI1ywBaxrFE2Ovu7NjxhmWlzM/SACnQbsgbd7cc9d5E46n5Y5Lcf iR3gIyl3eQbqVpJ+j85f6fhl8K+i7m5+nM8tpCDU+DV4yjNORS//WDWNqgK6uQvF7m2ue12mz8h KHI7Sq94jXX0TxWII4w== X-Proofpoint-GUID: g2-SXIqAA8ef1wcB9laG9oGQoWumLa2X X-Authority-Analysis: v=2.4 cv=P6avFSAu c=1 sm=1 tr=0 ts=6acfa5ec cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==:117 a=vSQal4Cqo5fxyC+YxRTyzw==: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=vn1o8rcWqlrXRnvXbFcA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=iS9zxrgQBfv6-_F4QbHw:22 X-Proofpoint-ORIG-GUID: g2-SXIqAA8ef1wcB9laG9oGQoWumLa2X X-Proofpoint-Spam-Info: AW1haW4tMjYxMDE0MDA2MyBTYWx0ZWRfX+b6r7V1u+ffu EBSiIZb1Xgu6GYay9mU2zp5RHhRcuKgttremjp/Sri66coDk+LMjwkZ5N0r4eyReaxIJiYWghK+ HdPDbnCk0M+coGFpCe5KdR2bkRnxiHw= 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_01,2026-10-14_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 bulkscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 suspectscore=0 clxscore=1015 impostorscore=0 malwarescore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610140063 On 10/13/2026 9:19 PM, Konrad Dybcio wrote: > 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" Looking at the other SoC DTS files, BAM node is enabled by default. So I don't have any concerns on enabling this node by default. > > Konrad