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[2003:dc:d3d2:e004:c1f3:de25:bb39:bc3b]) by smtp.googlemail.com with ESMTPSA id k56sm6909872wrk.45.2017.06.11.03.18.19 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 11 Jun 2017 03:18:19 -0700 (PDT) From: Martin Blumenstingl To: linux-amlogic@lists.infradead.org, jbrunet@baylibre.com, narmstrong@baylibre.com, khilman@baylibre.com, carlo@caione.org Subject: [PATCH 10/13] ARM: dts: meson: add the hardware random number generator Date: Sun, 11 Jun 2017 12:16:41 +0200 Message-Id: <20170611101644.28581-11-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.13.1 In-Reply-To: <20170611101644.28581-1-martin.blumenstingl@googlemail.com> References: <20170611101644.28581-1-martin.blumenstingl@googlemail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170611_031840_212470_9D516EEA X-CRM114-Status: UNSURE ( 7.87 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Martin Blumenstingl , devicetree@vger.kernel.org, mturquette@baylibre.com, linux@armlinux.org.uk MIME-Version: 1.0 Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+patchwork-linux-amlogic=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 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 | 5 +++++ arch/arm/boot/dts/meson8b.dtsi | 5 +++++ 3 files changed, 15 insertions(+) diff --git a/arch/arm/boot/dts/meson.dtsi b/arch/arm/boot/dts/meson.dtsi index b05796bee088..a210084398dc 100644 --- a/arch/arm/boot/dts/meson.dtsi +++ b/arch/arm/boot/dts/meson.dtsi @@ -78,6 +78,11 @@ #size-cells = <1>; ranges = <0x0 0xc1100000 0x200000>; + hwrng: rng@8100 { + compatible = "amlogic,meson-rng"; + reg = <0x8100 0x8>; + }; + uart_A: serial@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 cf011dfe050e..a80181ddd416 100644 --- a/arch/arm/boot/dts/meson8.dtsi +++ b/arch/arm/boot/dts/meson8.dtsi @@ -241,6 +241,11 @@ clock-names = "stmmaceth"; }; +&hwrng { + 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..52aa3f68a6bd 100644 --- a/arch/arm/boot/dts/meson8b.dtsi +++ b/arch/arm/boot/dts/meson8b.dtsi @@ -171,6 +171,11 @@ }; }; +&hwrng { + clocks = <&clkc CLKID_RNG0>; + clock-names = "core"; +}; + &L2 { arm,data-latency = <3 3 3>; arm,tag-latency = <2 2 2>;