Add basic DT bindings for the DFLL IP block for the NVIDIA Tegra114 SoC.
Signed-off-by: Paul Walmsley <pwalmsley@xxxxxxxxxx>
Cc: Matthew Longnecker <mlongnecker@xxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Pawel Moll <pawel.moll@xxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Ian Campbell <ijc+devicetree@xxxxxxxxxxxxxx>
Cc: Kumar Gala <galak@xxxxxxxxxxxxxx>
---
.../bindings/clock/nvidia,tegra114-dfll.txt | 43 ++++++++++++++++++++
arch/arm/boot/dts/tegra114.dtsi | 10 +++++
2 files changed, 53 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/nvidia,tegra114-dfll.txt
diff --git a/Documentation/devicetree/bindings/clock/nvidia,tegra114-dfll.txt b/Documentation/devicetree/bindings/clock/nvidia,tegra114-dfll.txt
new file mode 100644
index 000000000000..b868bf97bc3d
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/nvidia,tegra114-dfll.txt
@@ -0,0 +1,43 @@
+NVIDIA Tegra114 DFLL FCPU clocksource data in the SoC DTS file:
+
+Required properties:
+
+- compatible : "nvidia,tegra114-dfll-fcpu"
+
+- reg : Must contain the starting physical address and length for the
+ DFLL's MMIO register space, including the DFLL-to-I2C
+ controller interface and the DFLL's I2C controller.
+
+- clocks : Must contain an array of two-cell arrays, one per clock.
+ DFLL source clocks. At minimum this should include the
+ reference clock source and the IP block's main clock
+ source. Also it should contain the DFLL's I2C controller
+ clock source. The format is <&clock-provider-phandle
+ clock-id>.
+
+- clock-names : Must contain an array of strings, one per 'clocks'
+ two-cell array. The position in the array of these
+ strings must correspond to the position in the 'clocks'
+ array (see above). The DFLL driver currently requires
+ the "soc", "ref", and "i2c" clock names to be populated.
+
+
+Optional properties:
+
+- status : device availability -- managed by the DT integration code, not
+ the DFLL driver. Should be set to "disabled" in the SoC
+ DTS file.
+
+
+Example:
+
+dfll@70110000 {
+ compatible = "nvidia,tegra114-dfll-fcpu";
+ reg = <0x70110000 0x400>;
+ clocks = <&tegra_car TEGRA114_CLK_DFLL_SOC>,
+ <&tegra_car TEGRA114_CLK_DFLL_REF>,
+ <&tegra_car TEGRA114_CLK_I2C5>;
+ clock-names = "soc", "ref", "i2c";
+ status = "disabled";
+};
+
diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra114.dtsi
index ae855ec60bbd..1cd59d79e67c 100644
--- a/arch/arm/boot/dts/tegra114.dtsi
+++ b/arch/arm/boot/dts/tegra114.dtsi
@@ -480,6 +480,16 @@
};
};
+ dfll@70110000 {
+ compatible = "nvidia,tegra114-dfll-fcpu";
+ reg = <0x70110000 0x400>;
+ clocks = <&tegra_car TEGRA114_CLK_DFLL_SOC>,
+ <&tegra_car TEGRA114_CLK_DFLL_REF>,
+ <&tegra_car TEGRA114_CLK_I2C5>;
+ clock-names = "soc", "ref", "i2c";
+ status = "disabled";
+ };
+
sdhci@78000000 {
compatible = "nvidia,tegra114-sdhci", "nvidia,tegra30-sdhci";
reg = <0x78000000 0x200>;
--
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