Re: [PATCH v1 2/2] dt-binding: timer: document NPCM7xx timer DT bindings

Sorry for the delay,


On 10 October 2017 at 17:57, Rob Herring [off-list ref] wrote:

On Sun, Oct 01, 2017 at 12:11:38PM +0300, Tomer Maimon wrote:

quoted

Added device tree binding documentation for Nuvoton NPCM7xx timer.

Signed-off-by: Tomer Maimon <redacted>
---
 .../bindings/timer/nuvoton,npcm7xx-timer.txt       | 25 ++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/nuvoton,npcm7xx-timer.txt

diff --git a/Documentation/devicetree/bindings/timer/nuvoton,npcm7xx-timer.txt b/Documentation/devicetree/bindings/timer/nuvoton,npcm7xx-timer.txt
new file mode 100644
index 000000000000..d1beea901509
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/nuvoton,npcm7xx-timer.txt

@@ -0,0 +1,25 @@
+Nuvoton NPCM7xx timer
+
+Nuvoton NPCM7xx have three timer modules, each timer module provides five 24-bit
+timer counters.
+
+Required properties:
+- compatible      : "nuvoton,npcm7xx-timer" for Poleg NPCM7xx.

Don't use wildcards in compatible strings. Use SoC specific compatible
strings with a fallback (the string for the 1st SoC which the block
appeared) if necessary.

The SOC NPCM7xx is now on upstream process, I asked Brendan to modify
the NPCM7xx device tree to support the clock source driver

https://www.spinics.net/lists/arm-kernel/msg614424.html

and also the arcitecture name

https://www.spinics.net/lists/arm-kernel/msg614059.html

quoted

+- reg             : Offset and length of the register set for the device.
+- interrupts      : Contain the timer interrupt with flags for
+                    falling edge.
+
+Required clocking property, have to be one of:
+- clocks          : phandle of timer reference clock.
+- clock-frequency : The frequency in Hz of the clock that drives the NPCM7xx
+                    timer (usually 25000000).
+
+Example:
+
+timer@f0008000 {
+    compatible = "nuvoton,npcm7xx-timer";
+    interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+    reg = <0xf0008000 0x1000>;
+    clocks = <&clk NPCM7XX_CLK_TIMER>;
+};
+
--
2.14.1

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