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Tue, 20 Oct 2026 00:30:25 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c4090dcf72asm463264466b.18.2026.10.20.00.30.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 20 Oct 2026 00:30:24 -0700 (PDT) Message-ID: Date: Tue, 20 Oct 2026 09:30:19 +0200 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/5] dt-bindings: clock: qcom: Add bindings for PDM GP_MN clock divider To: Taniya Das , Bjorn Andersson , Michael Turquette , Stephen Boyd , Brian Masney , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Linus Walleij , Richard Cochran , Konrad Dybcio Cc: Ajit Pandey , Imran Shaik , Jagadeesh Kona , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, netdev@vger.kernel.org References: <20260602-pdm_clk_gp_mnd_v1-v1-0-1522662b6c53@oss.qualcomm.com> <20260602-pdm_clk_gp_mnd_v1-v1-1-1522662b6c53@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-Proofpoint-ORIG-GUID: WlsvWMPjk9HsPbHuvBa8Vgif2GbiQuNL X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDIwMDAyOSBTYWx0ZWRfXx5DPPC1i4yrt 9rGBL5EZW3VhmVvY/cxx6M0RtU+vCfDfHEXQdevqjFBsQh0uAMFGeqBZlxy+4c1cBKjOHhGYJen uPn3cgmRs2/XOMKjAHNQseQ6lFjT4PUbrvso/o9swncGsMQYNLzLR3URqW+/iqwPhdyfnY7IiB8 Cyy37nd1/9swcS3XRq8krUUm5e0hvojVHGA6gTnsLHc4ZXo8exrm/ukGD0GBgjBozEefWna27Sr 3BoQchNZ1SDIg1QOH79O2D/UmJlEykMC0C+094aguBhha1DM1EK1LG5AEgpACJ5q6YyEiDBJ1FQ 9lUyoBHPvkFE66sVMB80Iqig4kON1hHWI3POajnVFDg9POpGHgFLRS9uDoK+OJpQtCkYfd+2CJa Szur5+prZX1NIZ15jjRxjqZeTWIesePadzR4qD9RYSyeSubkFwOOoLj8DuQ/NYC4DHQKveENjV5 WYbSqYxtMD4DjNdOYNg== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIwMDAyOSBTYWx0ZWRfX9XTGV4v9TuRA slfccHt39WGUiVpn9aAA1SumXairdDnLQygZY0hOZtCJkAssPy6xP0PXh2pUPib55vYeBzwFfk1 pRfY2C388S0z2FPXLAARYA0JDHUggyQ= X-Authority-Analysis: v=2.4 cv=LpcHWXdc c=1 sm=1 tr=0 ts=6ad71894 cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=EUspDBNiAAAA:8 a=SJAiqMQSjMSsh2023uEA:9 a=QEXdDO2ut3YA:10 a=a_PwQJl-kcHnX1M80qC6:22 X-Proofpoint-GUID: WlsvWMPjk9HsPbHuvBa8Vgif2GbiQuNL X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-20_01,2026-10-19_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 adultscore=0 phishscore=0 clxscore=1015 impostorscore=0 malwarescore=0 suspectscore=0 lowpriorityscore=0 bulkscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610200029 On 10/15/26 9:15 AM, Taniya Das wrote: > > > On 6/9/2026 6:54 PM, Konrad Dybcio wrote: >> On 6/2/26 5:21 PM, Taniya Das wrote: >>> Add device tree bindings for the Qualcomm Peripheral Web's PDM GP_MN >>> clock divider. The hardware generates a fractional output frequency >>> from a fixed input clock (typically TCXO4) using the relation >>> Fout = Fin * (M / N), with duty cycle controlled by a separate D >>> register. The clock output is routed over a gpio controlled pin. >>> >>> Signed-off-by: Taniya Das >>> --- >> >> [...] >> >>> + #include >>> + gp_mn: clock-controller@88d3000 { >>> + compatible = "qcom,clk-gp-mnd"; >> >> The compatible must be SoC-specific, looking at the table, we could >> use these example socs for the versions of this block: >> >> 8960 (v1.0.0) >> 8974 (v1.1.1) >> 8994 (v2.1.0) >> 8996 (v2.2.0) >> > > Apologies for the late response. > The GP_MND block does not have any functional differences across the > supported SoCs. To reflect this, the DT binding will use a SoC-specific > compatible followed by a generic fallback compatible that represents the > common GP_MND implementation. > > compatible = "qcom,sc7280-gp-mnd", > "qcom,gp-mnd"; I think the dt maintainers may be a little grumpy about the non-SoC-bound fallback > >>> + reg = <0x88d3000 0xc>; >> >> Let's map the entire 0x4000 that this block spans >> > > This region support 2 or 3 different blocks of HW and they have > different functionalities and for which I am going to add the driver > support. What I can do is map 0x88d3000 size - 0x1000. Please let me > know your comments. Sounds good Konrad