diff mbox series

[v2,3/9] dt-bindings: nvmem: sfp: Add TA_PROG_SFP supply

Message ID 20220422145147.2210587-4-sean.anderson@seco.com (mailing list archive)
State New, archived
Headers show
Series nvmem: sfp: binding updates and additions | expand

Commit Message

Sean Anderson April 22, 2022, 2:51 p.m. UTC 
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@seco.com>
---

Changes in v2:
- Mention "regulator" in the description for ta-prog-sfp-supply

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

Comments

Andrew Lunn April 22, 2022, 3:02 p.m. UTC | #1 
On Fri, Apr 22, 2022 at 10:51:41AM -0400, Sean Anderson wrote:
> 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@seco.com>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew
diff mbox series

Patch

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