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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b8037f512e3sm3298156966b.67.2025.12.29.04.18.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 29 Dec 2025 04:18:58 -0800 (PST) Message-ID: <9648b69d-bec8-4f4e-8db6-b94972971454@oss.qualcomm.com> Date: Mon, 29 Dec 2025 13:18:56 +0100 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: 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> <0593cc2e-0114-404f-929a-0860d60afefb@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: AW1haW4tMjUxMjI5MDExMyBTYWx0ZWRfXx4eItae5u2sa b0qQ2Hbh5VCK/bfE7Qt2dHP0AMHkdRAPXcCqhpupu5AqKB5fCqhqwcAiEyf8qZz8+6XvZgv9UKB iUqHlEtkbG34rLXa0hZbf90GH9aufht7/z9dIIQwJi0j7Ab48lMwj7h2e5PMZlIRq1ZLJarqVu0 5M/TUVLIj8FjcC7UwTNiouPcyeSAYnSA14xXLYJz/GYDUg2neg4Sw6NyFBezMztsIDtoXymCEu/ U+dJUdMh2aoRPru4yyhr62QxTysP/U7N2kpTUg/tG/MjMjCQmZ7k1s2OsBAn5uVOWqY8+n4/Jrx w8I2f03B/zPzGP5OvzCQr4oE9cD6l5ZHp+RdbnFC3poM54GfhSvpRc6yswZxql0J+j6qsFvTjtW lhdRXFFblmEPJe5qa/Ymn9kJMnXgco6993cJ79KqTO4TeS3mKCnr1xptE6/Hajj84HMmMxAVJCy XsEmGYIxKyUuJDSL8LQ== X-Authority-Analysis: v=2.4 cv=cP7tc1eN c=1 sm=1 tr=0 ts=695271b4 cx=c_pps a=mPf7EqFMSY9/WdsSgAYMbA==:117 a=FpWmc02/iXfjRdCD7H54yg==: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=dawVfQjAaf238kedN5IG:22 X-Proofpoint-ORIG-GUID: UjLech3A3KbweMn-NS4j8Y-jPpsMIn4Y X-Proofpoint-GUID: UjLech3A3KbweMn-NS4j8Y-jPpsMIn4Y 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=2025-12-29_04,2025-12-29_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 malwarescore=0 lowpriorityscore=0 impostorscore=0 adultscore=0 bulkscore=0 suspectscore=0 spamscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2512290113 On 12/24/25 3:02 AM, Yijie Yang wrote: > > > On 12/24/2025 1:27 AM, 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 > > I want to provide readers with a comprehensive comparison of the two boards, Hamoa-IoT-EVK and Purwa-IoT-EVK, covering all differences in both the SOM and the carrier board. Of course - my comment points out that the specific wording of "delta between Hamoa and Purwa" may be easily misinterpreted as not what you're saying above Konrad