On 9/21/2018 10:35 AM, Simon Horman wrote:

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Describe TPU in the R8A779{7|8}0 device trees.

Based on the original (and large) patches by Vladimir Barinov.

Signed-off-by: Vladimir Barinov <redacted>
Signed-off-by: Sergei Shtylyov <redacted>

---
This patch is against the 'renesas-devel-20180919-v4.19-rc4' branch of
Simon Horman's 'renesas.git' repo.

  arch/arm64/boot/dts/renesas/r8a77970.dtsi |    8 ++++++++
  arch/arm64/boot/dts/renesas/r8a77980.dtsi |    9 +++++++++
  2 files changed, 17 insertions(+)

Index: renesas/arch/arm64/boot/dts/renesas/r8a77970.dtsi
===================================================================

--- renesas.orig/arch/arm64/boot/dts/renesas/r8a77970.dtsi
+++ renesas/arch/arm64/boot/dts/renesas/r8a77970.dtsi

@@ -614,6 +614,14 @@
  			status = "disabled";
  		};
  
+		tpu: pwm@e6e80000 {
+			compatible = "renesas,tpu-r8a77970", "renesas,tpu";

   Oops, forgot to document the SoC specific binding...

I'm still not seeing the binding in my inbox.

 > Could you post it or point me to a link to it?

    Because I still haven't posted it. It turned out the bindings doc needs 
some fixing 1st... :-/

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+			reg = <0 0xe6e80000 0 0x100>;

This register range seems a little small.
 From my reading of the documentation 0x148 would be a more obvious choice.

    Yeah, I've noticed that too -- will be fixed in v2.

Is the driver only accessing registers in in the 0x100 range for some
reason?

    Yes, the registers beyond 0x100 are for the step motor control...

[...]

MBR, Sergei