Thread (20 messages) 20 messages, 5 authors, 2021-12-02
STALE1645d

[PATCH 4/6] dt-bindings: phy: mediatek: tphy: support software efuse load

From: Chunfeng Yun <chunfeng.yun@mediatek.com>
Date: 2021-11-07 07:57:11
Also in: linux-arm-kernel, linux-devicetree, linux-mediatek, lkml
Subsystem: arm/mediatek usb3 phy driver, generic phy framework, open firmware and flattened device tree bindings, the rest · Maintainers: Chunfeng Yun, Vinod Koul, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds

Add optional property nvmem-cells and nvmem-cell-names to support
software efuse load, this helps to fix the efuse bit shift issue
on mt8195 etc.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
 .../devicetree/bindings/phy/mediatek,tphy.yaml | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
diff --git a/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml b/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
index 9e6c0f43f1c6..05ee274b4b71 100644
--- a/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
+++ b/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
@@ -160,6 +160,24 @@ patternProperties:
                 - PHY_TYPE_PCIE
                 - PHY_TYPE_SATA
 
+      nvmem-cells:
+        items:
+          - description: internal R efuse for U2 PHY or U3/PCIe PHY
+          - description: rx_imp_sel efuse for U3/PCIe PHY
+          - description: tx_imp_sel efuse for U3/PCIe PHY
+        description: |
+          Phandles to nvmem cell that contains the efuse data;
+          Available only for U2 PHY or U3/PCIe PHY of version 2/3, these
+          three items should be provided at the same time for U3/PCIe PHY,
+          when use software to load efuse;
+          If unspecified, will use hardware auto-load efuse.
+
+      nvmem-cell-names:
+        items:
+          - const: intr
+          - const: rx_imp
+          - const: tx_imp
+
       # The following optional vendor properties are only for debug or HQA test
       mediatek,eye-src:
         description:
-- 
2.18.0


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