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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-65fabd466d7sm3999861a12.13.2026.03.03.02.05.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 03 Mar 2026 02:05:50 -0800 (PST) Message-ID: <382725b5-1e72-44b2-b9ae-38aea1f7a976@oss.qualcomm.com> Date: Tue, 3 Mar 2026 11:05:46 +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 v8 08/18] arm64: dts: qcom: x1e80100: Add CAMCC block definition To: Taniya Das , Bryan O'Donoghue , Bjorn Andersson , Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Robert Foss , Todor Tomov , Mauro Carvalho Chehab , Konrad Dybcio , Vladimir Zapolskiy , Bryan O'Donoghue Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, Krzysztof Kozlowski References: <20260225-b4-linux-next-25-03-13-dtsi-x1e80100-camss-v8-0-95517393bcb2@linaro.org> <20260225-b4-linux-next-25-03-13-dtsi-x1e80100-camss-v8-8-95517393bcb2@linaro.org> <4fab8e64-8251-4424-974c-19434ee04c76@oss.qualcomm.com> <9ff1645f-b2c9-4c1a-ae2d-96af416b08d9@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <9ff1645f-b2c9-4c1a-ae2d-96af416b08d9@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzAzMDA3NiBTYWx0ZWRfX0esw7bBI6gLk u4Ept06ygIdrL3J+P1Rowb7uiq69IvNFrRyMQCywSdM9hZGW+TxCDihEyio2Mbz80wfJwWHvSi1 FZWZso28Tn2J7SzHcYTLXWvXoVM5x36zbijRgS9hJxPwBZzWTf8EFvzqOqMfW9I2RGXGxgv0zMS TuNNXfMNPcoM/eTw2ZxWjYLe++O0hpwhBzbp2dkenN3Lk+097N/PGD4XNp+v7Jxv0WyjgLBVxoc 6gD7gAkVXR9kHphQgO/sWG33B5J7Jmi7atJPz/B08qyFuMS7lrWufRmd/unFw1FMaliKwPCb9Yg /h3U7JxkgKiD/8XgR8LvoufdFxk6yCCDCZISwXASNmQDNuAbURPWwoA21DVhZxM01zpOxBxjKoy sc3t/JsN3cLdwDuLfOGOqTI7jgJNDcixLlOUdXnO+LSs/d7vyjb1ml9M1OsvbBu86KaMYdVef0a cY/LLd6mA6MoxMhNo+A== X-Authority-Analysis: v=2.4 cv=MuhfKmae c=1 sm=1 tr=0 ts=69a6b27f cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=tQIHczrEV2zaa04Eb40A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-ORIG-GUID: Slz60WCmqiUQ0ZoXap03Id4uox3zV4UW X-Proofpoint-GUID: Slz60WCmqiUQ0ZoXap03Id4uox3zV4UW X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-02_05,2026-03-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 phishscore=0 bulkscore=0 lowpriorityscore=0 adultscore=0 impostorscore=0 suspectscore=0 malwarescore=0 clxscore=1015 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603030076 On 3/3/26 6:56 AM, Taniya Das wrote: > >>> >>> + >>> + camcc: clock-controller@ade0000 { >>> + compatible = "qcom,x1e80100-camcc"; >>> + reg = <0 0x0ade0000 0 0x20000>; >>> + clocks = <&gcc GCC_CAMERA_AHB_CLK>, >>> + <&bi_tcxo_div2>, >>> + <&bi_tcxo_ao_div2>, >>> + <&sleep_clk>; >>> + power-domains = <&rpmhpd RPMHPD_MXC>, >>> + <&rpmhpd RPMHPD_MMCX>; >>> + required-opps = <&rpmhpd_opp_low_svs>, >>> + <&rpmhpd_opp_low_svs>; >> >> Taniya, in light of the recent discoveries on other platforms, does x1 >> need a performance vote on MXA here? > > Konrad, MxA is always ON, and with the current clock configuration, a > performance vote isn’t required because the clock controller currently > votes only for the minimum level. Yes, it's on, however I'm asking whether it needs to be at any specific higher OPP as the clocks are scaled to higher rates. In particular, PLL2 and the MCLK RCGs/branches have *some* references to MXA, yet their FMAX is possible @ LOWSVS_D1, so it may be that we *effectively* don't need any. Konrad