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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-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> 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: AW1haW4tMjUxMjIzMDE0NCBTYWx0ZWRfX9+R2Yxoe2d3s T9/G5wkYbz3rJjyiYGk4wVLCq9vYiIRw6hps6GxW2orzFAxas8t9TqVIXgM1voR1fBCImu2sXeh 7cJc9SjsZftuSTrAF5OFA1s9GbAR+Tdlnywdcuw8V3fEeOeo1yBIgRdUWZoLreemC0k0NIuLy5T 8GIsYHvZdz1CVgZbbzrmC+KtPKQwPjzcmDYwA0gbR46bVRW+q1v0hLbOTcExpPV5GXlUTHV/u5n vsfUq568mHFd9jFMvIeq/5FpggfUzQY+04ZLpvimm79lwRZxoxoQUhF1MBTM5SNDdUTo+JImw71 wnv1icjzTxBOQ/Dy2DIWCyRM71UOuqfimOxv7md3o1maqBqbjEMdqhlB1oG68ZIZf6OvlXyix4E yq7Fzc7NaYOndZIEFOE6tk1oDWDTPtmLkPKUyfnzywHFFf+lOHruiA+791wk1+QcJsxwL1mZx6W TGOKDSxy7Nuv9dPFlmA== X-Proofpoint-GUID: 21AK5XBEmMq2jGoDtmWEDf4DSRJaYqMk X-Proofpoint-ORIG-GUID: 21AK5XBEmMq2jGoDtmWEDf4DSRJaYqMk X-Authority-Analysis: v=2.4 cv=brtBxUai c=1 sm=1 tr=0 ts=694ad0ef 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=Lmo0ds7W6JHZdixPqlIA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=dawVfQjAaf238kedN5IG:22 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 impostorscore=0 suspectscore=0 spamscore=0 adultscore=0 priorityscore=1501 malwarescore=0 phishscore=0 lowpriorityscore=0 bulkscore=0 clxscore=1015 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. >>> >> >