linux-kernel - [PATCH 3/8] dt-bindings: nvmem: sfp: Add TA_PROG

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Date:   Thu, 21 Apr 2022 13:56:52 -0400
From:   Sean Anderson <sean.anderson@...o.com>
To:     linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org
Cc:     Shawn Guo <shawnguo@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Michael Walle <michael@...le.cc>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Li Yang <leoyang.li@....com>, linux-kernel@...r.kernel.org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Sean Anderson <sean.anderson@...o.com>
Subject: [PATCH 3/8] dt-bindings: nvmem: sfp: Add TA_PROG_SFP supply

The TA_PROG_SFP supply must be enabled to program the fuses, and
disabled to read the fuses (such as at power-on-reset). On many boards,
this supply is controlled by a jumper. The user must manually insert or
remove it at the appropriate time in the programming process. However,
on other boards this supply is controlled by and FPGA or a GPIO. In
these cases, the driver can automatically enabled and disable it as
necessary.

Signed-off-by: Sean Anderson <sean.anderson@...o.com>
---

 .../devicetree/bindings/nvmem/fsl,layerscape-sfp.yaml        | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/nvmem/fsl,layerscape-sfp.yaml b/Documentation/devicetree/bindings/nvmem/fsl,layerscape-sfp.yaml
index 54086f50157d..e7d1232fcd41 100644
--- a/Documentation/devicetree/bindings/nvmem/fsl,layerscape-sfp.yaml
+++ b/Documentation/devicetree/bindings/nvmem/fsl,layerscape-sfp.yaml
@@ -32,6 +32,11 @@ properties:
   clock-names:
     const: sfp
 
+  ta-prog-sfp-supply:
+    description:
+      The TA_PROG_SFP supply. It will be enabled for programming and disabled
+      for reading.
+
 required:
   - compatible
   - reg
-- 
2.35.1.1320.gc452695387.dirty