Documentation: DT bindings: add more Tegra chip compatible strings

Align compatible strings for several IP blocks present on Tegra chips
with the latest doctrine from the DT maintainers:

http://marc.info/?l=devicetree&m=142255654213019&w=2

The primary objective here is to avoid checkpatch warnings, per:

http://marc.info/?l=linux-tegra&m=142201349727836&w=2

DT binding text files have been updated for the following IP blocks:

- PCIe
- SOR
- SoC timers
- AHB "gizmo"
- APB_MISC
- pinmux control
- UART
- PWM
- I2C
- SPI
- RTC
- PMC
- eFuse
- AHCI
- HDA
- XUSB_PADCTRL
- SDHCI
- SOC_THERM
- AHUB
- I2S
- EHCI
- USB PHY

N.B. The nvidia,tegra20-timer compatible string is removed from the
nvidia,tegra30-timer.txt documentation file because it's already
mentioned in the nvidia,tegra20-timer.txt documentation file.

This second version takes into account the following requests from
Rob Herring <robherring2@gmail.com>:

- Per-IP block patches have been combined into a single patch

- Explicit documentation about which compatible strings are actually
  matched by the driver has been removed.  In its place is implicit
  documentation that loosely follows Rob's prescribed format:

  "Must contain '"nvidia,<chip>-pcie", "nvidia,tegra20-pcie"' where
   <chip> is tegra30, tegra132, ..." [...]  "You should attempt to
   document known values of <chip> if you use it"

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Dylan Reid <dgreid@chromium.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Jingchang Lu <jingchang.lu@freescale.com>
Cc: John Crispin <blogic@openwrt.org>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mikko Perttunen <mperttunen@nvidia.com>
Cc: Murali Karicheri <m-karicheri2@ti.com>
Cc: Paul Walmsley <pwalmsley@nvidia.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Peter De Schrijver <pdeschrijver@nvidia.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Tejun Heo <tj@kernel.org>
Cc: "Terje Bergström" <tbergstrom@nvidia.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-i2c@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: linux-pwm@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>

2 files changed, 9 insertions, 2 deletions

diff --git a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-ahb.txt b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-ahb.txt
index 234406d41c12..067c9790062f 100644
--- a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-ahb.txt
+++ b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-ahb.txt
@@ -1,7 +1,10 @@
 NVIDIA Tegra AHB
 
 Required properties:
-- compatible : "nvidia,tegra20-ahb" or "nvidia,tegra30-ahb"
+- compatible : For Tegra20, must contain "nvidia,tegra20-ahb".  For
+  Tegra30, must contain "nvidia,tegra30-ahb".  Otherwise, must contain
+  '"nvidia,<chip>-ahb", "nvidia,tegra30-ahb"' where <chip> is tegra124,
+  tegra132, or tegra210.
 - reg : Should contain 1 register ranges(address and length)
 
 Example:
diff --git a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt
index 68ac65f82a1c..dd75b972ee37 100644
--- a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt
+++ b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt
@@ -6,7 +6,11 @@ modes. It provides power-gating controllers for SoC and CPU power-islands.
 
 Required properties:
 - name : Should be pmc
-- compatible : Should contain "nvidia,tegra<chip>-pmc".
+- compatible : For Tegra20, must contain "nvidia,tegra20-pmc".  For Tegra30,
+  must contain "nvidia,tegra30-pmc".  For Tegra114, must contain
+  "nvidia,tegra114-pmc".  For Tegra124, must contain "nvidia,tegra124-pmc".
+  Otherwise, must contain "nvidia,<chip>-pmc", plus at least one of the
+  above, where <chip> is tegra132.
 - reg : Offset and length of the register set for the device
 - clocks : Must contain an entry for each entry in clock-names.
   See ../clocks/clock-bindings.txt for details.