From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../devicetree/bindings/misc/olpc,xo1.75-ec.yaml   | 56 ++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.yaml

(limited to 'Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.yaml')

diff --git a/Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.yaml b/Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.yaml
new file mode 100644
index 000000000..b3c45c046
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+# Copyright (C) 2019,2020 Lubomir Rintel <lkundrak@v3.sk>
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/misc/olpc,xo1.75-ec.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: OLPC XO-1.75 Embedded Controller bindings
+
+description: |
+  This binding describes the Embedded Controller acting as a SPI bus master
+  on a OLPC XO-1.75 laptop computer.
+
+  The embedded controller requires the SPI controller driver to signal
+  readiness to receive a transfer (that is, when TX FIFO contains the
+  response data) by strobing the ACK pin with the ready signal. See the
+  "ready-gpios" property of the SSP binding as documented in:
+  <Documentation/devicetree/bindings/spi/marvell,mmp2-ssp.yaml>.
+
+maintainers:
+  - Lubomir Rintel <lkundrak@v3.sk>
+
+properties:
+  compatible:
+    const: olpc,xo1.75-ec
+
+  cmd-gpios:
+    description: GPIO uspecifier of the CMD pin
+    maxItems: 1
+
+  spi-cpha: true
+
+required:
+  - compatible
+  - cmd-gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    spi {
+      spi-slave;
+      #address-cells = <0>;
+      #size-cells = <0>;
+      ready-gpios = <&gpio 125 GPIO_ACTIVE_HIGH>;
+
+      slave {
+        compatible = "olpc,xo1.75-ec";
+        spi-cpha;
+        cmd-gpios = <&gpio 155 GPIO_ACTIVE_HIGH>;
+      };
+    };
+
+...
-- 
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