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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a2f3d4cb82sm140523475ad.52.2025.12.23.18.03.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 23 Dec 2025 18:03:31 -0800 (PST) Message-ID: Date: Wed, 24 Dec 2025 10:03:27 +0800 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 0/4] Initial patch set for PURWA-IOT-EVK To: Dmitry Baryshkov , Konrad Dybcio 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> <0593cc2e-0114-404f-929a-0860d60afefb@oss.qualcomm.com> Content-Language: en-US From: Yijie Yang In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjI0MDAxNSBTYWx0ZWRfX1IiwekI87kmW xph9wV5XFhFdxnXyPyKreUOwL7XsZ092Ii6jQA8zBmPzazi1z1Uu8rYWb5LzJnnCauOfbbywdzW NdYdhRHLYbBYz5CJevAeR0FWK8sDaXnkcUOmCsC7QIy/i9KA7yzWoKu52lv8v2MlpiZVd3NDh4X fkdGnsDjAy38Y40dh24MqC3wMpY1mK7d31Jd3iiuxiDMchPWHC/uGIZFE6hw/1DqJFOgtKUaRh4 v01lz+e5j5NF3OawDVixRtRIIsZbqA3xT3ybTVGPvz6MLUvqcI25mqwrw2rCI0PGdriD9U7YuWO +tSpMEGocayZzpbQm5OtYdylrwmUju4GgX8Hs3GDZNhlRAKK1TMNe+NGs2Iu5jQwUaYsY6aS+Bj p9EErCo/BVjwSlJoSfR2Lh74sRXUp3hsvOj22/8EvTaGy8hIcaSP+KDwTEfKvP7xdVxorCK6XQG w+XnGNPGoWXdgR/UhNw== X-Proofpoint-ORIG-GUID: 1haTCF4yzKZsF-0RDa6VfJFhrw4PSrJ- X-Authority-Analysis: v=2.4 cv=YcqwJgRf c=1 sm=1 tr=0 ts=694b49f6 cx=c_pps a=JL+w9abYAAE89/QcEU+0QA==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=5dvyyB_Sgsdd-Qve2IUA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=324X-CrmTo6CU4MGRt3R:22 X-Proofpoint-GUID: 1haTCF4yzKZsF-0RDa6VfJFhrw4PSrJ- 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_05,2025-12-22_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 malwarescore=0 priorityscore=1501 impostorscore=0 lowpriorityscore=0 adultscore=0 phishscore=0 clxscore=1015 bulkscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2512240015 On 12/24/2025 3:09 AM, Dmitry Baryshkov wrote: > On Tue, Dec 23, 2025 at 06:27:05PM +0100, Konrad Dybcio wrote: >> 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 > > Nah, I pointed out that the letter is incorrect. It's not just a > different firmware for the _same_ GPU. It's a different GPU revision. I’ll update the description here. > -- Best Regards, Yijie