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

Andrew Lunn
2021-05-21T01:44:38Z

On Thu, May 20, 2021 at 01:38:44PM +0200, Pali Rohár wrote:
> 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@kernel.org>
> Signed-off-by: Marek Behún <kabel@kernel.org>
> Cc: <stable@vger.kernel.org> # 5.4+: 46d2f6d0c99f ("arm64: dts: armada-3720-turris-mox: add firmware node")

Please drop stable. It is a new feature, not a fix.

Otherwise

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

Andrew