Messages in this thread Patch in this message | | | From | Neil Armstrong <> | Subject | [PATCH 3/3] arm64: dts: meson: g12a: Add hwrng node | Date | Mon, 20 May 2019 15:48:17 +0200 |
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The Amlogic G12A has the hwrng module in an unknown "EFUSE" bus.
The hwrng is not enabled on the vendor G12A DTs, but is enabled on next generation SM1 SoC family sharing the exact same memory mapping.
Let's add the "EFUSE" bus and the hwrng node.
This hwrng has been checked with the rng-tools rngtest FIPS tool : rngtest: starting FIPS tests... rngtest: bits received from input: 1630240032 rngtest: FIPS 140-2 successes: 81436 rngtest: FIPS 140-2 failures: 76 rngtest: FIPS 140-2(2001-10-10) Monobit: 10 rngtest: FIPS 140-2(2001-10-10) Poker: 6 rngtest: FIPS 140-2(2001-10-10) Runs: 26 rngtest: FIPS 140-2(2001-10-10) Long run: 34 rngtest: FIPS 140-2(2001-10-10) Continuous run: 0 rngtest: input channel speed: (min=3.784; avg=5687.521; max=19073.486)Mibits/s rngtest: FIPS tests speed: (min=47.684; avg=52.348; max=52.835)Mibits/s rngtest: Program run time: 30000987 microseconds
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> --- arch/arm64/boot/dts/amlogic/meson-g12a.dtsi | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi index 8fcdd12f684a..19ef6a467d63 100644 --- a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi @@ -197,6 +197,19 @@ }; }; + apb_efuse: bus@30000 { + compatible = "simple-bus"; + reg = <0x0 0x30000 0x0 0x1000>; + #address-cells = <2>; + #size-cells = <2>; + ranges = <0x0 0x0 0x0 0x30000 0x0 0x1000>; + + hwrng: rng { + compatible = "amlogic,meson-rng"; + reg = <0x0 0x218 0x0 0x4>; + }; + }; + periphs: bus@34400 { compatible = "simple-bus"; reg = <0x0 0x34400 0x0 0x400>; -- 2.21.0
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