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dt-bindings: omap-rng: Document SafeXcel IP-76 device variant

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This commits add missing fields in the documentation that are used
by the new device variant. It also includes DT example to show how
the variant should be used.

Signed-off-by: Romain Perier <romain.perier@free-electrons.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Romain Perier 2016-09-16 12:08:50 +02:00 committed by Herbert Xu
parent e4d6013eaf
commit 52060836f7
1 changed files with 12 additions and 2 deletions
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14
Documentation/devicetree/bindings/rng/omap_rng.txt
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@ -1,4 +1,4 @@
OMAP SoC HWRNG Module
OMAP SoC and Inside-Secure HWRNG Module
Required properties:
@ -6,11 +6,13 @@ Required properties:
RNG versions:
- "ti,omap2-rng" for OMAP2.
- "ti,omap4-rng" for OMAP4, OMAP5 and AM33XX.
- "inside-secure,safexcel-eip76" for SoCs with EIP76 IP block
Note that these two versions are incompatible.
- ti,hwmods: Name of the hwmod associated with the RNG module
- reg : Offset and length of the register set for the module
- interrupts : the interrupt number for the RNG module.
Only used for "ti,omap4-rng".
Used for "ti,omap4-rng" and "inside-secure,safexcel-eip76"
- clocks: the trng clock source
Example:
/* AM335x */
@ -20,3 +22,11 @@ rng: rng@48310000 {
reg = <0x48310000 0x2000>;
interrupts = <111>;
};
/* SafeXcel IP-76 */
trng: rng@f2760000 {
compatible = "inside-secure,safexcel-eip76";
reg = <0xf2760000 0x7d>;
interrupts = <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpm_syscon0 1 25>;
};