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Thu, 16 Jul 2026 07:46:41 -0700 (PDT) X-Received: by 2002:a05:6a21:6cc4:b0:3bf:e66f:266a with SMTP id adf61e73a8af0-3c110adf3d6mr24918127637.59.1784213201144; Thu, 16 Jul 2026 07:46:41 -0700 (PDT) Received: from [10.218.16.3] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-cb259026640sm1872033a12.30.2026.07.16.07.46.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 16 Jul 2026 07:46:40 -0700 (PDT) Message-ID: Date: Thu, 16 Jul 2026 20:16:33 +0530 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 v3 1/4] ASoC: dt-bindings: qcom: add LPASS LPR vote clock ID To: Krzysztof Kozlowski Cc: Bjorn Andersson , Bartosz Golaszewski , Linus Walleij , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Liam Girdwood , Mark Brown , Srinivas Kandagatla , Jaroslav Kysela , Takashi Iwai , Srinivas Kandagatla , linux-arm-msm@vger.kernel.org, linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, Bartosz Golaszewski References: <20260715133243.3170821-1-prasad.kumpatla@oss.qualcomm.com> <20260715133243.3170821-2-prasad.kumpatla@oss.qualcomm.com> <20260716-powerful-aloof-wombat-5088a1@quoll> Content-Language: en-US From: Prasad Kumpatla In-Reply-To: <20260716-powerful-aloof-wombat-5088a1@quoll> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=APNfGQ4N c=1 sm=1 tr=0 ts=6a58eed2 cx=c_pps a=rz3CxIlbcmazkYymdCej/Q==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=EUspDBNiAAAA:8 a=yUS1d6AIqEqXcYuy1NoA:9 a=QEXdDO2ut3YA:10 a=bFCP_H2QrGi7Okbo017w:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzE2MDE1MSBTYWx0ZWRfX2KBTaGd4uASf +UqgVxxecb1grXcKaOT1UCN5Ozj4EHuoRQzBpvqcFfZErdcIVdd+rAlc4dsfTUC6yH3M/Mznqd0 OyahlsR7XBKSbeNSXXWrYJmq3DPFqqw= X-Proofpoint-ORIG-GUID: 6ZAMg5UKSK1s5mQqgNrlZCvfhhA8ea2i X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE2MDE1MSBTYWx0ZWRfX1wEBL0wfR0lx FCuhe9GMQdi3fLpmc6ov1h51qSSrL0j21vCYJBP1KIIG1w+LxKywq9Jp7Mz/hJ1QbiWypfhN01J zuyqfER90lFnvmvPaG6X3IbmPROgY7Gwbv2oUDZy6V4CfNDO1iCc3tR5JawhjtU/Q17eP+yQKMk aa+v7+5lwShLlAPlgYs3izjH4CJSskKZrlrdadMgHdV8zEJ3y+TJH09xN741Gkkf6/UkHqlZr1w cDLT6UKXqeBoRN6KjJJc+AcqxXvnKYHVoiv5e5y/4OT3R5UOmlZOdtMyVNZsbdzdwn2U4iOkNoG Zzlqly6IkX1OuG/wahwtJ4dpD8tj5AnA0vnqW+MP32kAHizck/kzeabtYvzm0TPL74JZDO1K4jo t3IpWyyDir2NDvWN9vcPvOIsHyaX4HKiQYp+yrnEL9p9+hWQz1By+qsTk4Vlf+N2QF2ruVzeJYf LWsflP2bJajCTLEMY6g== X-Proofpoint-GUID: 6ZAMg5UKSK1s5mQqgNrlZCvfhhA8ea2i X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-16_05,2026-07-15_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 phishscore=0 adultscore=0 lowpriorityscore=0 impostorscore=0 malwarescore=0 bulkscore=0 spamscore=0 clxscore=1015 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607160151 On 7/16/2026 1:31 PM, Krzysztof Kozlowski wrote: > On Wed, Jul 15, 2026 at 07:02:40PM +0530, Prasad Kumpatla wrote: >> Add a new clock ID, LPASS_HW_LPR_VOTE, to represent the LPASS low-power >> resource (LPR) vote through the PRM interface. >> >> The LPASS PRM supports a resource voting mechanism to control low-power >> states via PARAM_ID_RSC_CPU_LPR. Exposing this as a q6prm clock ID allows >> clients to request the LPR vote using the existing qcom,q6prm clock >> provider interface. >> >> This functionality is required on newer platforms (e.g. Hawi) where LPASS >> clients need to explicitly manage LPR resource voting via PRM. >> >> Also update Q6AFE_MAX_CLK_ID to account for the newly added clock ID. >> >> Reviewed-by: Bartosz Golaszewski >> Signed-off-by: Prasad Kumpatla >> --- >> include/dt-bindings/sound/qcom,q6dsp-lpass-ports.h | 3 ++- >> 1 file changed, 2 insertions(+), 1 deletion(-) >> >> diff --git a/include/dt-bindings/sound/qcom,q6dsp-lpass-ports.h b/include/dt-bindings/sound/qcom,q6dsp-lpass-ports.h >> index 45850f2d4..06ca2c287 100644 >> --- a/include/dt-bindings/sound/qcom,q6dsp-lpass-ports.h >> +++ b/include/dt-bindings/sound/qcom,q6dsp-lpass-ports.h >> @@ -236,8 +236,9 @@ >> #define LPASS_HW_AVTIMER_VOTE 101 >> #define LPASS_HW_MACRO_VOTE 102 >> #define LPASS_HW_DCODEC_VOTE 103 >> +#define LPASS_HW_LPR_VOTE 104 >> >> -#define Q6AFE_MAX_CLK_ID 104 >> +#define Q6AFE_MAX_CLK_ID 105 > Nope, ABI break. You cannot change that and as stated many times already > - if you need it, then it is not a binding. Hi Krzysztof, Thanks for the review. LPASS_HW_LPR_VOTE is intended to be consumed via the DT clock specifier, similar to LPASS_HW_MACRO_VOTE and LPASS_HW_DCODEC_VOTE. My intention was therefore to add a new DT-visible clock ID. Regarding the ABI concern, would assigning LPASS_HW_LPR_VOTE from the currently unused range (for example 100) and keeping Q6AFE_MAX_CLK_ID unchanged address the issue, or is the concern that LPASS_HW_LPR_VOTE should not be exposed as a DT binding at all? If not, could you please advise the appropriate place/example for defining this CLK ID? Thanks, Prasad > > > Best regards, > Krzysztof >