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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-ac27af7fcf5sm609665966b.180.2025.03.11.13.41.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 11 Mar 2025 13:41:19 -0700 (PDT) Message-ID: <827ca00b-a895-4aab-bd1e-7866df730fef@oss.qualcomm.com> Date: Tue, 11 Mar 2025 21:41:17 +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] arm64: defconfig: Enable Qualcomm interconnects as built-in To: Dmitry Baryshkov , Christopher Obbard Cc: Catalin Marinas , Will Deacon , Bjorn Andersson , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org References: <20250311-wip-obbardc-qcom-defconfig-interconnects-builtin-v1-1-675b6bc57176@linaro.org> 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=M6hNKzws c=1 sm=1 tr=0 ts=67d09ff1 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Vs1iUdzkB0EA:10 a=R3joX-Mc2FtLiZgaDpIA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-ORIG-GUID: EMNzKif16lgmjqbg1YOQEO8ACYhA01O_ X-Proofpoint-GUID: EMNzKif16lgmjqbg1YOQEO8ACYhA01O_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1093,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-11_06,2025-03-11_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 impostorscore=0 malwarescore=0 bulkscore=0 mlxlogscore=999 clxscore=1015 phishscore=0 lowpriorityscore=0 spamscore=0 mlxscore=0 adultscore=0 priorityscore=1501 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2502280000 definitions=main-2503110134 On 3/11/25 7:52 PM, Dmitry Baryshkov wrote: > On Tue, Mar 11, 2025 at 07:02:56PM +0100, Christopher Obbard wrote: >> Currently some Qualcomm interconnect drivers are enabled >> as modules which isn't overly useful since the interconnects >> are required to be loaded during early boot. >> >> Loading the interconnects late (e.g. in initrd or as module) >> can cause boot issues, such as slowdown or even not booting >> at all (since the interconnect would be required for storage >> devices). > > This is not a good justification. It should be perfectly fine to load > block drivers (including their dependencies) from the initramfs. > > Up to now we have been enabling only those interconnect (and pinctrl, > btw) drivers, which are required to be able to open the consoe (thanks, > systemd). (non-earlycon) console is a better argument here, though Konrad