linux-kernel - [PATCH v4 mvebu + mvebu/dt64 2/2] arm64: dts: marvell: armada-37xx: move firmware node to generic dtsi file

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210520113844.32319-3-pali@kernel.org>
Date:   Thu, 20 May 2021 13:38:44 +0200
From:   Pali Rohár <pali@...nel.org>
To:     Gregory CLEMENT <gregory.clement@...tlin.com>,
        Andrew Lunn <andrew@...n.ch>
Cc:     Marek Behún <kabel@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 mvebu + mvebu/dt64 2/2] arm64: dts: marvell: armada-37xx: move firmware node to generic dtsi file

Move the turris-mox-rwtm firmware node from Turris MOX' device tree into
the generic armada-37xx.dtsi file and use the generic compatible string
'marvell,armada-3700-rwtm-firmware' instead of the current one.

Turris MOX DTS file contains also old compatible string for backward
compatibility.

The Turris MOX rWTM firmware can be used on any Armada 37xx device,
giving them access to the rWTM hardware random number generator, which
is otherwise unavailable.

This change allows Linux to load the turris-mox-rwtm.ko module on these
boards.

Tested on ESPRESSObin v5 with both default Marvell WTMI firmware and
CZ.NIC's firmware. With default WTMI firmware the turris-mox-rwtm fails
to probe, while with CZ.NIC's firmware it registers the HW random number
generator.

Signed-off-by: Pali Rohár <pali@...nel.org>
Signed-off-by: Marek Behún <kabel@...nel.org>
Cc: <stable@...r.kernel.org> # 5.4+: 46d2f6d0c99f ("arm64: dts: armada-3720-turris-mox: add firmware node")
---
 arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts | 6 ++----
 arch/arm64/boot/dts/marvell/armada-37xx.dtsi           | 8 ++++++++
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts b/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts
index 0753cc489638..6700f2212b61 100644
--- a/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts
+++ b/arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts
@@ -109,10 +109,8 @@
 	};
 
 	firmware {
-		turris-mox-rwtm {
-			compatible = "cznic,turris-mox-rwtm";
-			mboxes = <&rwtm 0>;
-			status = "okay";
+		armada-3700-rwtm {
+			compatible = "marvell,armada-3700-rwtm-firmware", "cznic,turris-mox-rwtm";
 		};
 	};
 };
diff --git a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
index 1b7f43e27589..847a2d12a4be 100644
--- a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
@@ -505,4 +505,12 @@
 			};
 		};
 	};
+
+	firmware {
+		armada-3700-rwtm {
+			compatible = "marvell,armada-3700-rwtm-firmware";
+			mboxes = <&rwtm 0>;
+			status = "okay";
+		};
+	};
 };
-- 
2.20.1