Thread (12 messages) 12 messages, 5 authors, 2015-03-09
STALE4115d

[PATCH 1/2] arm64: juno: Add APB registers and LEDs using syscon

From: Will Deacon <hidden>
Date: 2015-02-25 15:00:23

On Wed, Feb 25, 2015 at 02:47:56PM +0000, Liviu Dudau wrote:
On Wed, Feb 25, 2015 at 01:55:12PM +0000, Will Deacon wrote:
quoted
On Wed, Feb 25, 2015 at 12:16:29PM +0000, Linus Walleij wrote:
quoted
This defines the Juno "APB system registers" as a syscon device,
and all the LEDs controlled by the APB system registers right
below it using the syscon LEDs driver on top of syscon. Define
LED0 for heartbeat, LED1 for MMC0 activity and the following
four LEDs indicating CPU activity using the Linux-specific
DT bindings for triggers.

This is the pattern and same drivers as used on the legacy
platform device trees for the ARM Integrators and the RealView
PB1176.
Stupid question, but where are these LEDs located on the platform? I tried
enabling this, but all it seemed to do was make hackbench slightly slower :)
http://infocenter.arm.com/help/topic/com.arm.doc.ddi0524c/deb1353593789871.html

Section 1.3, look at the left hand side, above the user push buttons.
Right, so these LEDs are *inside* the case. Is that really something worth
enabling for defconfig?

Will
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