From 1b2f377b51289aa23a8ee9f0cd954ae1798364da Mon Sep 17 00:00:00 2001 From: Neil Armstrong Date: Mon, 27 May 2019 14:50:59 +0200 Subject: arm64: dts: meson: g12a: Add hwrng node The Amlogic G12A has the hwrng module at the end of 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 Reviewed-by: Martin Blumenstingl Signed-off-by: Kevin Hilman --- arch/arm64/boot/dts/amlogic/meson-g12a.dtsi | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'arch/arm64/boot/dts/amlogic/meson-g12a.dtsi') diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi index 840dab606110..8ea2ec45add5 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 0x2000>; + #address-cells = <2>; + #size-cells = <2>; + ranges = <0x0 0x0 0x0 0x30000 0x0 0x2000>; + + hwrng: rng@218 { + compatible = "amlogic,meson-rng"; + reg = <0x0 0x218 0x0 0x4>; + }; + }; + periphs: bus@34400 { compatible = "simple-bus"; reg = <0x0 0x34400 0x0 0x400>; -- cgit v1.2.3