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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-64b916b82e7sm15331785a12.35.2025.12.23.09.27.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 23 Dec 2025 09:27:08 -0800 (PST) Message-ID: <0593cc2e-0114-404f-929a-0860d60afefb@oss.qualcomm.com> Date: Tue, 23 Dec 2025 18:27:05 +0100 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/4] Initial patch set for PURWA-IOT-EVK To: Yijie Yang , Dmitry Baryshkov Cc: andersson@kernel.org, konradybcio@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org References: <20251222-purwa-v1-0-14ab9316e5ff@oss.qualcomm.com> 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: AW1haW4tMjUxMjIzMDE0NCBTYWx0ZWRfX86Cax/JArbdT pwcKFfUiMZiNn5ty84sXHCHo4fKsRdiTq7rRHefNME03YeF8KLvmsqPz16+dLkBnfrzkukrSZcc YzN2jB2JDjabY/OwYN7Nta9zp9grZ/C5mzhebuauCeWm/qpQvVM0ILECGvw8+VkyOUYyyDvgGFf EyguqLslBwGIw0E+GTVrO9+JY7lRJlbDUcHR+VQmYYiemKGFSCr2r9umHA+C7pDZDKrbFo8m1NJ +Jl5s4oYAfEwo5fo6iafU8FD3WA3nMGe9f107G8IcgXNME8J3RlYtkLqhYoas/rK6rF7T5enGaM rhTgJIcO5ZQGSXBR+T3pkXbzR0j+0c8LOzqLT/gQXKNewNTl6uVa9ewok/EVqNX+xG/GeF0trG+ JBMOcCyBGLNkDsjqZpXNQAZQsAjjFV2VePGNr056upJVCtKKOq41Sqtb/AbK5SujHjKX1VuiqzV gFmBaGhOcgVCFfPTDOQ== X-Proofpoint-ORIG-GUID: Kaj9U3JXqHPfH-7to5fNvtQthSKNmaJ7 X-Authority-Analysis: v=2.4 cv=LeUxKzfi c=1 sm=1 tr=0 ts=694ad0ef cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=Lmo0ds7W6JHZdixPqlIA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=a_PwQJl-kcHnX1M80qC6:22 X-Proofpoint-GUID: Kaj9U3JXqHPfH-7to5fNvtQthSKNmaJ7 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=2025-12-23_04,2025-12-22_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 phishscore=0 priorityscore=1501 lowpriorityscore=0 clxscore=1015 impostorscore=0 adultscore=0 bulkscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2512230144 On 12/23/25 3:12 AM, Yijie Yang wrote: > > > On 12/22/2025 5:18 PM, Dmitry Baryshkov wrote: >> On Mon, Dec 22, 2025 at 02:03:25PM +0800, YijieYang wrote: >>> From: Yijie Yang >>> >>> Introduce the device tree, DT bindings, and driver modifications required >>> to bring up the PURWA-IOT-EVK evaluation board. >>> >>> Purwa and Hamoa are IoT variants of x1p42100 and x1e80100, both based on >>> the IQ-X SoC series. Consequently, the two common files in this series are >>> prefixed with 'iq-x-iot' to reflect this relationship. >>> >>> PURWA-IOT-EVK shares almost the same hardware design with HAMOA-IOT-EVK, >>> except for differences in the BOM. As a result, most of the DTS can be >>> shared between them. >>> >>> The changes focus on two key hardware components: the PURWA-IOT-SOM and >>> the PURWA-IOT-EVK carrier board. >>> >>> Hardware delta between Hamoa and Purwa: >>> - Display: Purwa’s display uses a different number of clocks, and its >>>    frequency differs from Hamoa. >>> - GPU: Purwa requires a separate firmware compared to Hamoa. >> >> Is it just a separate firmware, or does it use a different _GPU_? > > It uses a different GPU. I think it would be useful to call this paragraph "Hardware delta between Hamoa-IoT-SoM/EVK and Purwa-IoT-whatever - because now Dmitry is asking about differences between Hamoa-the-SoC and Purwa-the-SoC which we expressed in purwa.dtsi Konrad > >> >>> - USB0: Purwa uses a PS8833 retimer, while Hamoa uses an FSUSB42 as the >>>    SBU switch. >>> >> >