ARM: 9480/1: entry: expand comment in __switch_tografted

As per discussion between the developers in the mail thread
linked, expand the comment in __switch_to so that readers
of the code understand what is going on.

Suggested-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

1 files changed, 48 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/siox/eckelmann,siox-gpio.yaml b/Documentation/devicetree/bindings/siox/eckelmann,siox-gpio.yaml
new file mode 100644
index 000000000..2ff204109
--- /dev/null
+++ b/Documentation/devicetree/bindings/siox/eckelmann,siox-gpio.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/siox/eckelmann,siox-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Eckelmann SIOX GPIO bus
+
+maintainers:
+  - Frank Li <Frank.Li@nxp.com>
+
+properties:
+  compatible:
+    const: eckelmann,siox-gpio
+
+  din-gpios:
+    maxItems: 1
+
+  dout-gpios:
+    maxItems: 1
+
+  dclk-gpios:
+    maxItems: 1
+
+  dld-gpios:
+    maxItems: 1
+
+required:
+  - compatible
+  - din-gpios
+  - dout-gpios
+  - dclk-gpios
+  - dld-gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    siox {
+        compatible = "eckelmann,siox-gpio";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_siox>;
+
+        din-gpios = <&gpio6 11 0>;
+        dout-gpios = <&gpio6 8 0>;
+        dclk-gpios = <&gpio6 9 0>;
+        dld-gpios = <&gpio6 10 0>;
+    };