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[188.141.5.72]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-482e28f6917sm782658f8f.35.2026.08.25.15.57.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 Aug 2026 15:57:32 -0700 (PDT) From: David Carlier To: vkoul@kernel.org Cc: neil.armstrong@linaro.org, qiang.yu@oss.qualcomm.com, mani@kernel.org, konrad.dybcio@oss.qualcomm.com, krishna.chundru@oss.qualcomm.com, linux-phy@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, David Carlier Subject: [PATCH 1/2] phy: qcom: qmp-pcie: Select MFD_SYSCON for the multi-PHY driver Date: Tue, 25 Aug 2026 23:57:28 +0100 Message-ID: <20260825225729.230493-1-devnexen@gmail.com> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The driver reads the active link mode through syscon_regmap_lookup_by_phandle_args(). Without CONFIG_MFD_SYSCON the stub returning -ENOTSUPP is compiled in instead, so probe fails for every device and no PHY is ever registered. Nothing in the build catches this: the driver still compiles, and arm64 defconfig happens to enable MFD_SYSCON through an unrelated select. Fixes: 1781be3c8a5d ("phy: qcom: qmp-pcie: Add QMP PCIe Multi-PHY driver") Signed-off-by: David Carlier --- drivers/phy/qualcomm/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/phy/qualcomm/Kconfig b/drivers/phy/qualcomm/Kconfig index d910a5d1a1ac..9113e1099245 100644 --- a/drivers/phy/qualcomm/Kconfig +++ b/drivers/phy/qualcomm/Kconfig @@ -81,6 +81,7 @@ config PHY_QCOM_QMP_PCIE_MULTIPHY tristate "Qualcomm QMP PCIe Multi PHY Driver" depends on PCI || COMPILE_TEST select GENERIC_PHY + select MFD_SYSCON help Enable this to support the QMP PCIe PHY transceiver that is used with PCIe controllers on Qualcomm chips. This PHY is a single -- 2.55.0