From 1d7aff7788362fb85ef694874c065dc2e1f58a63 Mon Sep 17 00:00:00 2001 From: Dave Gerlach Date: Tue, 26 Apr 2022 13:07:42 -0700 Subject: [PATCH] dt-bindings: wkup-m3-ipc: Add firmware-name property Document that the firmware-name property can be used to indicate a file contains I2C sequences for PMIC voltage scaling during deep sleep. Based on previous work by Russ Dill. Signed-off-by: Dave Gerlach Signed-off-by: Keerthy [dfustini: split from driver patch and convert to json-schema] Signed-off-by: Drew Fustini Signed-off-by: Rob Herring Link: https://lore.kernel.org/r/20220426200741.712842-2-dfustini@baylibre.com --- Documentation/devicetree/bindings/soc/ti/wkup-m3-ipc.yaml | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/Documentation/devicetree/bindings/soc/ti/wkup-m3-ipc.yaml b/Documentation/devicetree/bindings/soc/ti/wkup-m3-ipc.yaml index 88d690de..0df41c4 100644 --- a/Documentation/devicetree/bindings/soc/ti/wkup-m3-ipc.yaml +++ b/Documentation/devicetree/bindings/soc/ti/wkup-m3-ipc.yaml @@ -40,6 +40,12 @@ description: |+ override the pin's existing bias (pull-up/pull-down) and value (high/low) when IO isolation is active. + Support for I2C PMIC Voltage Scaling + ==================================== + It is possible to pass the name of a binary file to load into the CM3 memory. + The binary data is the I2C sequences for the CM3 to send out to the PMIC + during low power mode entry. + properties: compatible: enum: @@ -67,6 +73,10 @@ properties: mbox_wkupm3 child node. maxItems: 1 + firmware-name: + description: + Name of binary file with I2C sequences for PMIC voltage scaling + ti,vtt-gpio-pin: $ref: /schemas/types.yaml#/definitions/uint32 description: GPIO pin connected to enable pin on VTT regulator @@ -117,6 +127,7 @@ examples: ti,rproc = <&wkup_m3>; mboxes = <&am335x_mailbox &mbox_wkupm3>; ti,vtt-gpio-pin = <7>; + firmware-name = "am335x-evm-scale-data.bin"; }; }; @@ -157,6 +168,7 @@ examples: ti,rproc = <&wkup_m3>; mboxes = <&am437x_mailbox &mbox_wkupm3>; ti,set-io-isolation; + firmware-name = "am43x-evm-scale-data.bin"; }; }; -- 2.7.4