dt-bindings: Document rk3399 rk-timer bindings

Add a compatible string for rk3399 SoC because the timer is slightly different
from the older SoCs. So rename the file name from rockchip,rk3288-timer.txt to
rockchip,rk-timer.txt and clarify rockchip,rk3288-timer supported SoCs.

Signed-off-by: Huang Tao <huangtao@rock-chips.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

diff --git a/Documentation/devicetree/bindings/timer/rockchip,rk-timer.txt b/Documentation/devicetree/bindings/timer/rockchip,rk-timer.txt
new file mode 100644 (file)
index 0000000..a41b184
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/rockchip,rk-timer.txt
@@ -0,0 +1,20 @@
+Rockchip rk timer
+
+Required properties:
+- compatible: shall be one of:
+  "rockchip,rk3288-timer" - for rk3066, rk3036, rk3188, rk322x, rk3288, rk3368
+  "rockchip,rk3399-timer" - for rk3399
+- reg: base address of the timer register starting with TIMERS CONTROL register
+- interrupts: should contain the interrupts for Timer0
+- clocks : must contain an entry for each entry in clock-names
+- clock-names : must include the following entries:
+  "timer", "pclk"
+
+Example:
+       timer: timer@ff810000 {
+               compatible = "rockchip,rk3288-timer";
+               reg = <0xff810000 0x20>;
+               interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
+               clocks = <&xin24m>, <&cru PCLK_TIMER>;
+               clock-names = "timer", "pclk";
+       };

diff --git a/Documentation/devicetree/bindings/timer/rockchip,rk3288-timer.txt b/Documentation/devicetree/bindings/timer/rockchip,rk3288-timer.txt
deleted file mode 100644 (file)
index 87f0b00..0000000
--- a/Documentation/devicetree/bindings/timer/rockchip,rk3288-timer.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-Rockchip rk3288 timer
-
-Required properties:
-- compatible: shall be "rockchip,rk3288-timer"
-- reg: base address of the timer register starting with TIMERS CONTROL register
-- interrupts: should contain the interrupts for Timer0
-- clocks : must contain an entry for each entry in clock-names
-- clock-names : must include the following entries:
-  "timer", "pclk"
-
-Example:
-       timer: timer@ff810000 {
-               compatible = "rockchip,rk3288-timer";
-               reg = <0xff810000 0x20>;
-               interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
-               clocks = <&xin24m>, <&cru PCLK_TIMER>;
-               clock-names = "timer", "pclk";
-       };