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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-67d0a616294sm1920493a12.25.2026.05.07.03.47.26 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 07 May 2026 03:47:27 -0700 (PDT) Message-ID: <0e0b9933-f753-4a79-b4ed-dc992733a387@oss.qualcomm.com> Date: Thu, 7 May 2026 12:47:25 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] dt-bindings: cache: qcom,llcc: Document Eliza LLCC block To: Krzysztof Kozlowski , Abel Vesa Cc: Bjorn Andersson , Konrad Dybcio , Conor Dooley , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260504-eliza-llcc-v1-0-d7006c899812@oss.qualcomm.com> <20260504-eliza-llcc-v1-1-d7006c899812@oss.qualcomm.com> <20260506-imported-emerald-quoll-fd1ef8@quoll> <0028dd41-d039-4ef5-a9f7-deb730a05b0b@oss.qualcomm.com> <319fc5ac-1211-4845-9a66-79f1a3026126@kernel.org> <486d6b30-8762-4f14-aa19-7c5497cba00f@oss.qualcomm.com> <2920e0bc-3f60-49bf-969c-9c049b080703@kernel.org> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <2920e0bc-3f60-49bf-969c-9c049b080703@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=TJB1jVla c=1 sm=1 tr=0 ts=69fc6dc1 cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=3WHJM1ZQz_JShphwDgj5:22 a=JAKgS-5HGXHXDUih-usA:9 a=QEXdDO2ut3YA:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTA3MDEwNyBTYWx0ZWRfXx9BclufK/GId uPQfRw0iXiTB9zor6BKsDaRaoJrNiN+FkTUtXh02Qxl8nkmAF5ATkCy8zf/JXfxSjk4aANtZv11 pX3x7DmDKYGPUIYzB1PQu7eAaVB8+soai25m0I2JFN6cCPzDKeWMobCa4V6fgZTCZAig7bxuDvC aWN2ZOuT4TfTH4O6iS/XBqFXl1jEgkL2KI+vRpS6947jA5u6ZCdrzGONezF5rv9tBsk6ri+QYIh cV+2iEfvOY5HqGwizWJkvfpyyYMeTGyGygCNzeGxjwj8/lDGK+i8Om3/iSNASs0o6CxlQrEZEUF XErMqiLCbl0Iby6oFnKRxJwlMWBMrUpr6aljB0PMkTBON/J/RFJfBaBWkMP6qFgpGikntKAf8Vs tkcVDHLa9Z4PkYo2XFuN0SLbXz+FiZKcUdLGrNaNEuxd8GbOLifz/WoOa6617fXkxwosXYX0QUe tvf7+GO24h6zNWJpkAg== X-Proofpoint-GUID: LzZGwayjmqYIiBNMJUqkC3x8t4bfeOZn X-Proofpoint-ORIG-GUID: LzZGwayjmqYIiBNMJUqkC3x8t4bfeOZn X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-06_02,2026-05-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 lowpriorityscore=0 malwarescore=0 impostorscore=0 bulkscore=0 phishscore=0 priorityscore=1501 adultscore=0 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2605070107 On 5/6/26 2:15 PM, Krzysztof Kozlowski wrote: > On 06/05/2026 12:47, Konrad Dybcio wrote: >> On 5/6/26 11:56 AM, Krzysztof Kozlowski wrote: >>>>>> + then: >>>>>> + properties: >>>>>> + reg: >>>>>> + items: >>>>>> + - description: LLCC0 base register region >>>>>> + - description: LLCC2 base register region >>>>> >>>>> LLCC1? >>>> >>>> Unfortunately not >>> >>> Then let's just skip the names, because it will cause unnecessary >>> confusion when name is llcc1 (since it is the NEXT entry) but it points >>> to block called LLCC2 in the manual. >> >> I don't think skipping the names is a good idea, especially since if >> we keep them, we could teach the driver what channel the region actually >> corresponds to > > You still can do it, because indices are fixed. Names are only helper > and makes that easier. > > The problem looks to me purely doc-related, because this is logically > second channel, so LLCC1, just like qcom,sc7280-llcc or > qcom,sdm670-llcc. Does naming it as third channel (LLCC2) is relevant > for programming interface? Imagine driver taking LLCCx and using the 'x' > as offset? > > I tried to find something in HPG but no luck. On recent platforms, channels 0/2 and 1/3 are paired, perhaps that's where it comes from Konrad