ARM: dts: dra7-ipu-dsp-common: Add timers to IPU and DSP nodes

The BIOS System Tick timers have been added for all the IPU and
DSP remoteproc devices in the DRA7 SoC family. The data is added
to the two common dra7-ipu-dsp-common and dra74-ipu-dsp-common
dtsi files that are included by all the desired board files. The
following timers are chosen, as per the timers used on the current
firmware images:
        IPU2: GPTimer 3
        IPU1: GPTimer 11
        DSP1: GPTimer 5
        DSP2: GPTimer 6

The timers are optional, but are mandatory to support advanced device
management features such as power management and watchdog support.
The above are added to successfully boot and execute firmware images
configured with the respective timers, images that use internal
processor subsystem timers are not affected. The timers can be
changed or removed as per the system integration needs, if needed.

Each of the IPUs has two Cortex-M4 processors, and is currently
expected to be running in SMP-mode, so only a single timer suffices
to provide the BIOS tick timer. An additional timer should be added
for the second processor in IPU if it were to be run in non-SMP mode.
The timer value also needs to be unique from the ones used by other
processors so that they can be run simultaneously.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/dra7-ipu-dsp-common.dtsi b/arch/arm/boot/dts/dra7-ipu-dsp-common.dtsi
index 8a53da1c5f2ebf0ab2f03365a2f99a6eeb1a717f..23ce3b67faf7157c9c0ab156562369709850111b 100644 (file)
--- a/arch/arm/boot/dts/dra7-ipu-dsp-common.dtsi
+++ b/arch/arm/boot/dts/dra7-ipu-dsp-common.dtsi
@@ -22,12 +22,15 @@
 
 &ipu2 {
        mboxes = <&mailbox6 &mbox_ipu2_ipc3x>;
+       ti,timers = <&timer3>;
 };
 
 &ipu1 {
        mboxes = <&mailbox5 &mbox_ipu1_ipc3x>;
+       ti,timers = <&timer11>;
 };
 
 &dsp1 {
        mboxes = <&mailbox5 &mbox_dsp1_ipc3x>;
+       ti,timers = <&timer5>;
 };

diff --git a/arch/arm/boot/dts/dra74-ipu-dsp-common.dtsi b/arch/arm/boot/dts/dra74-ipu-dsp-common.dtsi
index 6e31c1c27fd4876fd86c5dac10003377e564f6c4..a546cf7403659f51195bc0c7acaf66279b053cf4 100644 (file)
--- a/arch/arm/boot/dts/dra74-ipu-dsp-common.dtsi
+++ b/arch/arm/boot/dts/dra74-ipu-dsp-common.dtsi
@@ -13,4 +13,5 @@
 
 &dsp2 {
        mboxes = <&mailbox6 &mbox_dsp2_ipc3x>;
+       ti,timers = <&timer6>;
 };