pwm: tegra: Add device tree support

Add auxdata to instantiate the PWFM controller from a device tree,
include the corresponding nodes in the dtsi files for Tegra 20 and
Tegra 30 and add binding documentation.

Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi
index 2dcc09e784b5..f7f428e81e3a 100644
--- a/arch/arm/boot/dts/tegra30.dtsi
+++ b/arch/arm/boot/dts/tegra30.dtsi
@@ -117,6 +117,12 @@
                 status = "disable";
         };
 
+        pwm {
+                compatible = "nvidia,tegra30-pwm", "nvidia,tegra20-pwm";
+                reg = <0x7000a000 0x100>;
+                #pwm-cells = <2>;
+        };
+
         i2c@7000c000 {
                 compatible =  "nvidia,tegra30-i2c", "nvidia,tegra20-i2c";
                 reg = <0x7000c000 0x100>;