summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt
diff options
context:
space:
mode:
authorMauro Carvalho Chehab <mchehab@redhat.com>2012-04-19 14:23:28 +0200
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-04-19 14:23:28 +0200
commitd5aeee8cb28317ef608ecac421abc4d986d585d2 (patch)
tree70ec8ed8891f26e5c58152ffca9924ea1c58fe3a /Documentation/devicetree/bindings/gpio/gpio_nvidia.txt
parent[media] zoran: fix integer overflow in setup_window() (diff)
parentLinux 3.4-rc3 (diff)
downloadlinux-d5aeee8cb28317ef608ecac421abc4d986d585d2.tar.xz
linux-d5aeee8cb28317ef608ecac421abc4d986d585d2.zip
Merge tag 'v3.4-rc3' into staging/for_v3.5
* tag 'v3.4-rc3': (3755 commits) Linux 3.4-rc3 x86-32: fix up strncpy_from_user() sign error ARM: 7386/1: jump_label: fixup for rename to static_key ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus PCI: Fix regression in pci_restore_state(), v3 SCSI: Fix error handling when no ULD is attached ARM: OMAP: clock: cleanup CPUfreq leftovers, fix build errors ARM: dts: remove blank interrupt-parent properties ARM: EXYNOS: Fix Kconfig dependencies for device tree enabled machine files do not export kernel's NULL #define to userspace ARM: EXYNOS: Remove broken config values for touchscren for NURI board ARM: EXYNOS: set fix xusbxti clock for NURI and Universal210 boards ARM: EXYNOS: fix regulator name for NURI board ARM: SAMSUNG: make SAMSUNG_PM_DEBUG select DEBUG_LL cpufreq: OMAP: fix build errors: depends on ARCH_OMAP2PLUS sparc64: Eliminate obsolete __handle_softirq() function sparc64: Fix bootup crash on sun4v. ARM: msm: Fix section mismatches in proc_comm.c ...
Diffstat (limited to 'Documentation/devicetree/bindings/gpio/gpio_nvidia.txt')
-rw-r--r--Documentation/devicetree/bindings/gpio/gpio_nvidia.txt36
1 files changed, 34 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt b/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt
index eb4b530d64e1..023c9526e5f8 100644
--- a/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt
@@ -1,8 +1,40 @@
-NVIDIA Tegra 2 GPIO controller
+NVIDIA Tegra GPIO controller
Required properties:
-- compatible : "nvidia,tegra20-gpio"
+- compatible : "nvidia,tegra<chip>-gpio"
+- reg : Physical base address and length of the controller's registers.
+- interrupts : The interrupt outputs from the controller. For Tegra20,
+ there should be 7 interrupts specified, and for Tegra30, there should
+ be 8 interrupts specified.
- #gpio-cells : Should be two. The first cell is the pin number and the
second cell is used to specify optional parameters:
- bit 0 specifies polarity (0 for normal, 1 for inverted)
- gpio-controller : Marks the device node as a GPIO controller.
+- #interrupt-cells : Should be 2.
+ The first cell is the GPIO number.
+ The second cell is used to specify flags:
+ bits[3:0] trigger type and level flags:
+ 1 = low-to-high edge triggered.
+ 2 = high-to-low edge triggered.
+ 4 = active high level-sensitive.
+ 8 = active low level-sensitive.
+ Valid combinations are 1, 2, 3, 4, 8.
+- interrupt-controller : Marks the device node as an interrupt controller.
+
+Example:
+
+gpio: gpio@6000d000 {
+ compatible = "nvidia,tegra20-gpio";
+ reg = < 0x6000d000 0x1000 >;
+ interrupts = < 0 32 0x04
+ 0 33 0x04
+ 0 34 0x04
+ 0 35 0x04
+ 0 55 0x04
+ 0 87 0x04
+ 0 89 0x04 >;
+ #gpio-cells = <2>;
+ gpio-controller;
+ #interrupt-cells = <2>;
+ interrupt-controller;
+};