Thread (56 messages) flat view 56 messages, 8 authors, 2014-02-18

[PATCH 23/27] clocksource: sh_cmt: Add DT support

From: laurent.pinchart@ideasonboard.com (Laurent Pinchart)
Date: 2014-02-14 14:34:50
Also in: linux-sh, lkml

Hi Geert,

Thank you for the review.

On Friday 14 February 2014 10:18:58 Geert Uytterhoeven wrote:
On Fri, Feb 14, 2014 at 2:00 AM, Laurent Pinchart wrote:
quoted
+++ b/Documentation/devicetree/bindings/timer/renesas,cmt.txt
@@ -0,0 +1,75 @@
+* Renesas R-Car Compare Match Timer (CMT)
+
+The CMT is a multi-channel 16/32/48-bit timer/counter with configurable
clock
16-bit is mentioned here ...
quoted
+inputs and programmable compare match.
+
+Channels share hadware resources but their counter and compare match
value are
hardware
quoted
+independent. A particular CMT instance can implement only a subset of the
+channels supported by the CMT model. Channels indices start from 0 and
are
Channel indices
quoted
+consecutive.
+
+Required Properties:
+
+  - compatible: must contain one of the following.
... why not add "renesas,cmt-16" here (and one extra line in the actual
driver), while you're at it?
Because the 16-bit variant is only used on SuperH SoCs, so there's not much 
point in adding DT bindings for it.
quoted
+    - "renesas,cmt-32" for the 32-bit CMT
+               (CMT0 on sh7372, sh73a0 and r8a7740)
+    - "renesas,cmt-32-fast" for the 32-bit CMT with fast clock support
+               (CMT[234] on sh7372, sh73a0 and r8a7740)
+    - "renasas,cmt-48" for the 48-bit CMT
+               (CMT1 on sh7372, sh73a0 and r8a7740)
+    - "renesas,cmt-48-gen2" for the second generation 48-bit CMT
+               (CMT[01] on r8a73a4, r8a7790 and r8a7791)
-- 
Regards,

Laurent Pinchart
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