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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b723d3a3082sm230640666b.11.2025.11.04.06.58.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 04 Nov 2025 06:58:31 -0800 (PST) Message-ID: <9d80b581-5d3f-4b95-91e7-c73c113b0976@oss.qualcomm.com> Date: Tue, 4 Nov 2025 15:58:27 +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 v3 1/2] dt-bindings: soc: qcom: Add qcom,kaanapali-imem compatible To: Krzysztof Kozlowski , Jingyi Wang Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Robert Marko , Das Srinagesh , aiqun.yu@oss.qualcomm.com, tingwei.zhang@oss.qualcomm.com, trilok.soni@oss.qualcomm.com, yijie.yang@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20251102-knp-soc-binding-v3-0-11255ec4a535@oss.qualcomm.com> <20251102-knp-soc-binding-v3-1-11255ec4a535@oss.qualcomm.com> <20251104-glaring-rebel-pillbug-a467ca@kuoka> <790ca394-cee2-412b-97d8-c6416b843010@oss.qualcomm.com> <9ee07db9-508e-4c08-8f79-6ccfd9b646ab@oss.qualcomm.com> <6af33c1b-5b95-4efc-b429-5bfb9ee7caeb@kernel.org> <8cf870a8-706d-4514-a87a-a69b64521ab5@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=APHuRV3Y c=1 sm=1 tr=0 ts=690a1499 cx=c_pps a=HLyN3IcIa5EE8TELMZ618Q==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=5iiKZxNyi93qT-c_jNQA:9 a=QEXdDO2ut3YA:10 a=bTQJ7kPSJx9SKPbeHEYW:22 X-Proofpoint-GUID: uxieRZCi-tWephJphRFDd0Z1FcJrJKp9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTA0MDEyNSBTYWx0ZWRfX5PFxvwsl9T62 h3ZqP/6dNKOgYkk5uOoBAcLKeefA7WBtuYVwtr/hSIeJq4VqhF2ZbM08razqPRHleuT012WW87K AXT5U+GRUnaL6dEny03v/KRJphnt6+dgTv//L10aML+P4eePTdNkyPOU0exLjoggazCgGDROXXY LM0Wyj+RABQstYfDo3T3OesWy2sg1YYuX62rvOMq5KAUMoWu+ydUwn1OAUT6sQ6QwvQt2udWwvp QDepq1JPsqGwSjMPOE0nUOYBZ+ytJeu6bnDqokBOtzFSHwZeYqxFlbV84LmjIiUXTUtZgVD/rjU bMpmZKnzNeUML5YGMVxa6T8xWtLFO+PiUbMq05EnRwRRzMDBH6CyEKT5AyQITyox7d2IWEojTdI aS7G3h9XwlkkuCq47eTVDs7TGt0tww== X-Proofpoint-ORIG-GUID: uxieRZCi-tWephJphRFDd0Z1FcJrJKp9 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=2025-11-04_01,2025-11-03_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 clxscore=1015 impostorscore=0 priorityscore=1501 phishscore=0 suspectscore=0 adultscore=0 bulkscore=0 spamscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2511040125 On 11/4/25 3:52 PM, Krzysztof Kozlowski wrote: > On 04/11/2025 15:38, Konrad Dybcio wrote: >> On 11/4/25 3:37 PM, Krzysztof Kozlowski wrote: >>> On 04/11/2025 15:35, Konrad Dybcio wrote: >>>> On 11/4/25 3:26 PM, Krzysztof Kozlowski wrote: >>>>> This I got, but nothing here explains why you need generic compatible. >>>>> To re-iterate: there was no generic compatible before, now there is. >>>>> Writing bindings and numerous reviews from DT maintainers ask not to use >>>>> generic compatibles. >>>> >>>> OK so let's not worry about a generic compatible. IMEM exists since >>>> MSM8974 and it only had major hw updates with SM8550. They don't >>>> impact the software interface though, so qcom,msm8974-imem is OK. >>>> >>>> There's a separate control/status register address space for each >>>> instance of this IP (usually far apart from the actual SRAM pool), >>>> which Linux doesn't have to care about. >>> >>> Just use qcom,kaanapali-imem - that's the first device here without syscons. >> >> So we don't want to move the existing ones over? > > This was never discussed and this patch did not do it. You cannot move > them, that's ABI. I see, I implicitly assumed this would be a sweeping change. So should the Kaanapali submitters simply send a version of this patch with: - oneOf: - const: qcom,kaanapali-imem - items: # existing big list ? I'm not a huge fan of using kaanapali as the fallback-going-forward since it's literally the newest platform on the shelves (or perhaps not even on the shelves yet..) so it's going to look funny when someone comes up with support for another 2013 soc.. but perhaps that's just how things are supposed to be Konrad