From mboxrd@z Thu Jan 1 00:00:00 1970 From: martin.blumenstingl@googlemail.com (Martin Blumenstingl) Date: Thu, 15 Jun 2017 23:33:49 +0200 Subject: [PATCH v2 07/10] ARM: dts: meson: add the hardware random number generator In-Reply-To: <20170615213352.25134-1-martin.blumenstingl@googlemail.com> References: <20170611101644.28581-1-martin.blumenstingl@googlemail.com> <20170615213352.25134-1-martin.blumenstingl@googlemail.com> Message-ID: <20170615213352.25134-8-martin.blumenstingl@googlemail.com> To: linus-amlogic@lists.infradead.org List-Id: linus-amlogic.lists.infradead.org All supported Meson SoCs have a random number generator in CBUS. Newer SoCs (GXBB, GXL and GXM) provide only one 32-bit random number register, whereas the older SoCs (Meson6, Meson8 and Meson8b) have two 32-bit random number registers. The existing meson-rng driver only supports the lower 32-bit - but it still works fine on the older SoCs apart from this small limitation. Signed-off-by: Martin Blumenstingl Reviewed-by: Neil Armstrong --- arch/arm/boot/dts/meson.dtsi | 5 +++++ arch/arm/boot/dts/meson8.dtsi | 6 ++++++ arch/arm/boot/dts/meson8b.dtsi | 6 ++++++ 3 files changed, 17 insertions(+) diff --git a/arch/arm/boot/dts/meson.dtsi b/arch/arm/boot/dts/meson.dtsi index 46706d74a145..bf37606ba82e 100644 --- a/arch/arm/boot/dts/meson.dtsi +++ b/arch/arm/boot/dts/meson.dtsi @@ -80,6 +80,11 @@ #size-cells = <1>; ranges = <0x0 0xc1100000 0x200000>; + hwrng: rng at 8100 { + compatible = "amlogic,meson-rng"; + reg = <0x8100 0x8>; + }; + uart_A: serial at 84c0 { compatible = "amlogic,meson-uart"; reg = <0x84c0 0x18>; diff --git a/arch/arm/boot/dts/meson8.dtsi b/arch/arm/boot/dts/meson8.dtsi index df79a34a3530..b4c5fdd7b451 100644 --- a/arch/arm/boot/dts/meson8.dtsi +++ b/arch/arm/boot/dts/meson8.dtsi @@ -241,6 +241,12 @@ clock-names = "stmmaceth"; }; +&hwrng { + compatible = "amlogic,meson8-rng", "amlogic,meson-rng"; + clocks = <&clkc CLKID_RNG0>; + clock-names = "core"; +}; + &i2c_AO { clocks = <&clkc CLKID_CLK81>; }; diff --git a/arch/arm/boot/dts/meson8b.dtsi b/arch/arm/boot/dts/meson8b.dtsi index 1c09090ff4a5..a9d7074e6369 100644 --- a/arch/arm/boot/dts/meson8b.dtsi +++ b/arch/arm/boot/dts/meson8b.dtsi @@ -171,6 +171,12 @@ }; }; +&hwrng { + compatible = "amlogic,meson8b-rng", "amlogic,meson-rng"; + clocks = <&clkc CLKID_RNG0>; + clock-names = "core"; +}; + &L2 { arm,data-latency = <3 3 3>; arm,tag-latency = <2 2 2>; -- 2.13.1