diff mbox series

[07/11] dt-bindings: wkup_m3_ipc: Add scale-data-fw property

Message ID 20220219215328.485660-8-dfustini@baylibre.com
State New
Headers show
Series soc: ti: wkup_m3_ipc: support vtt toggle, io isolation & voltage scaling | expand

Commit Message

Drew Fustini Feb. 19, 2022, 9:53 p.m. UTC 
From: Dave Gerlach <d-gerlach@ti.com>

Add documentation for scale-data-fw property on the wkup_m3_ipc node to
enable I2C PMIC voltage scaling. The property contains the name of a
binary file for the CM3 firmware to load.

Based on previous work by Russ Dill.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
[dfustini: split dt-binding change into separate patch]
Signed-off-by: Drew Fustini <dfustini@baylibre.com>
---
 .../devicetree/bindings/soc/ti/wkup_m3_ipc.txt        | 11 +++++++++++
 1 file changed, 11 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/soc/ti/wkup_m3_ipc.txt b/Documentation/devicetree/bindings/soc/ti/wkup_m3_ipc.txt
index df6b600abf4c..01b78a9da943 100644
--- a/Documentation/devicetree/bindings/soc/ti/wkup_m3_ipc.txt
+++ b/Documentation/devicetree/bindings/soc/ti/wkup_m3_ipc.txt
@@ -56,6 +56,17 @@  Example:
 		};
 	};
 
+Support for I2C PMIC Voltage Scaling
+--------------------
+It is possible to pass the name of a binary file to laod to the CM3 firmware
+in order to provide I2C sequences for the CM3 to send out to the PMIC during
+low power mode entry.
+
+Optional properties:
+--------------------
+- scale-data-fw:	Name of the firmware binary in /lib/firmware to copy to m3
+			aux data.
+
 Support for VTT Toggle
 ==================================
 In order to enable the support for VTT toggle during Suspend/Resume