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Message-Id: <20240825-beagleplay_fw_upgrade-v3-1-8f424a9de9f6@beagleboard.org>
Date: Sun, 25 Aug 2024 22:17:05 +0530
From: Ayush Singh <ayush@...gleboard.org>
To: lorforlinux@...gleboard.org, jkridner@...gleboard.org, 
 robertcnelson@...gleboard.org, "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Nishanth Menon <nm@...com>, 
 Vignesh Raghavendra <vigneshr@...com>, Tero Kristo <kristo@...nel.org>, 
 Johan Hovold <johan@...nel.org>, Alex Elder <elder@...nel.org>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: greybus-dev@...ts.linaro.org, netdev@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, Ayush Singh <ayush@...gleboard.org>
Subject: [PATCH v3 1/3] dt-bindings: net: ti,cc1352p7: Add
 bootloader-backdoor-gpios

bootloader-backdoor-gpio (along with reset-gpio) is used to enable
bootloader backdoor for flashing new firmware.

The pin and pin level to enable bootloader backdoor is configured using
the following CCFG variables in cc1352p7:
- SET_CCFG_BL_CONFIG_BL_PIN_NO
- SET_CCFG_BL_CONFIG_BL_LEVEL

Signed-off-by: Ayush Singh <ayush@...gleboard.org>
---
 Documentation/devicetree/bindings/net/ti,cc1352p7.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/ti,cc1352p7.yaml b/Documentation/devicetree/bindings/net/ti,cc1352p7.yaml
index 3dde10de4630..4f4253441547 100644
--- a/Documentation/devicetree/bindings/net/ti,cc1352p7.yaml
+++ b/Documentation/devicetree/bindings/net/ti,cc1352p7.yaml
@@ -29,6 +29,12 @@ properties:
   reset-gpios:
     maxItems: 1
 
+  bootloader-backdoor-gpios:
+    maxItems: 1
+    description: |
+      gpios to enable bootloader backdoor in cc1352p7 bootloader to allow
+      flashing new firmware.
+
   vdds-supply: true
 
 required:
@@ -46,6 +52,7 @@ examples:
         clocks = <&sclk_hf 0>, <&sclk_lf 25>;
         clock-names = "sclk_hf", "sclk_lf";
         reset-gpios = <&pio 35 GPIO_ACTIVE_LOW>;
+        bootloader-backdoor-gpios = <&pio 36 GPIO_ACTIVE_LOW>;
         vdds-supply = <&vdds>;
       };
     };

-- 
2.46.0


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