From: Shawn Guo <shengchao.guo@oss.qualcomm.com>
To: Vinod Koul <vkoul@kernel.org>
Cc: Neil Armstrong <neil.armstrong@linaro.org>,
Manivannan Sadhasivam <mani@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,
Abel Vesa <abelvesa@kernel.org>,
Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>,
Bartosz Golaszewski <brgl@kernel.org>,
Krishna Kurapati <krishna.kurapati@oss.qualcomm.com>,
linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>,
Shawn Guo <shengchao.guo@oss.qualcomm.com>
Subject: [PATCH 1/4] dt-bindings: phy: qcom,snps-eusb2-phy: Make resets optional
Date: Tue, 1 Sep 2026 17:50:52 +0800 [thread overview]
Message-ID: <20260901095055.42229-2-shengchao.guo@oss.qualcomm.com> (raw)
In-Reply-To: <20260901095055.42229-1-shengchao.guo@oss.qualcomm.com>
From: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Not every instance of this PHY has a block reset of its own. On Nord
SoC there are three eUSB2 PHYs but only two QUSB2PHY block resets:
the HS-only USB20 tile has no dedicated PHY reset and is instead reset as
a whole through the controller's own USB20_PRIM_BCR. Requiring 'resets'
makes that instance impossible to describe, since the controller and the
PHY cannot both claim the single block reset exclusively.
The driver has always treated the reset as optional - it uses
devm_reset_control_get_optional_exclusive() - and the sibling
samsung,exynos2200-eusb2-phy binding, which is served by the same driver,
does not require it either. Drop it from the required list.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Shawn Guo <shengchao.guo@oss.qualcomm.com>
---
Documentation/devicetree/bindings/phy/qcom,snps-eusb2-phy.yaml | 1 -
1 file changed, 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-phy.yaml
index 096f6b546632..2140482c8e3b 100644
--- a/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-phy.yaml
@@ -64,7 +64,6 @@ required:
- clock-names
- vdd-supply
- vdda12-supply
- - resets
additionalProperties: false
--
2.43.0
--
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy
next prev parent reply other threads:[~2026-09-01 9:51 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-01 9:50 [PATCH 0/4] phy: qcom: Add USB PHY support for Nord SoC Shawn Guo
2026-09-01 9:50 ` Shawn Guo [this message]
2026-09-01 9:50 ` [PATCH 2/4] dt-bindings: phy: qcom,snps-eusb2-phy: Document the Nord eUSB2 PHY Shawn Guo
2026-09-01 9:50 ` [PATCH 3/4] dt-bindings: phy: qcom,sc8280xp-qmp-usb43dp-phy: Document the Nord QMP PHY Shawn Guo
2026-09-01 9:50 ` [PATCH 4/4] phy: qcom: qmp-combo: Add USB3+DP PHY support for Nord Shawn Guo
2026-09-01 10:03 ` sashiko-bot
2026-09-01 12:12 ` Abel Vesa
2026-09-01 12:33 ` Krishna Kurapati
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