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[v5,6/9] mfd: cros_ec: Add DT property to define ChromeOS EC name

Message ID 1433336644-20532-7-git-send-email-javier.martinez@collabora.co.uk
State Needs Review / ACK, archived
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Commit Message

Javier Martinez Canillas June 3, 2015, 1:04 p.m. UTC 
From: Gwendal Grignou <gwendal@chromium.org>

Chromebooks can have more than one Embedded Controller with
different functinality. For example there may be a EC that
handles Power Delivery (PD) or another one that is a Sensor
Hub (SH). So there should be a way to specify the function
so that is reflected in the character device name and the
sysfs entries.

Add a "google,cros-ec-name" DT property to the ChromeOS EC
binding document to change the EC name based on its function.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
---

Changes since v4: None, new patch
---
 Documentation/devicetree/bindings/mfd/cros-ec.txt | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/mfd/cros-ec.txt b/Documentation/devicetree/bindings/mfd/cros-ec.txt
index 8009c3d87f33..dcf404d16067 100644
--- a/Documentation/devicetree/bindings/mfd/cros-ec.txt
+++ b/Documentation/devicetree/bindings/mfd/cros-ec.txt
@@ -30,6 +30,11 @@  Required properties (LPC):
 - compatible: "google,cros-ec-lpc"
 - reg: List of (IO address, size) pairs defining the interface uses
 
+Optional properties (All):
+- google,cros-ec-name: name of the EC. Can be based on its function: for
+  instance, for Sensor Hub, 'cros_sh', for Power Delivery MCU 'cros_pd'.
+  If is not present, a default name will be set (i.e: 'cros_ec').
+
 
 Example for I2C: