linux-kernel - [PATCH 13/16] dt-bindings: nvmem: sfp: Add TA_PROG

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Date:   Fri, 29 Apr 2022 17:26:58 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     gregkh@...uxfoundation.org
Cc:     linux-kernel@...r.kernel.org,
        Sean Anderson <sean.anderson@...o.com>,
        Andrew Lunn <andrew@...n.ch>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH 13/16] dt-bindings: nvmem: sfp: Add TA_PROG_SFP supply

From: Sean Anderson <sean.anderson@...o.com>

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 an FPGA or a GPIO. In
these cases, the driver can automatically enable and disable it as
necessary.

Signed-off-by: Sean Anderson <sean.anderson@...o.com>
Reviewed-by: Andrew Lunn <andrew@...n.ch>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 .../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..c5d7375b840a 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 regulator for the TA_PROG_SFP pin. It will be enabled for programming
+      and disabled for reading.
+
 required:
   - compatible
   - reg
-- 
2.21.0