Messages in this thread | | | Date | Tue, 30 Aug 2022 15:24:12 +0530 | Subject | Re: [PATCH v2 1/4] arm64: dts: ti: k3-am65-main: Disable RNG node | From | Jayesh Choudhary <> |
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On 23/08/22 05:41, Andrew Davis wrote: > The hardware random number generator is used by OP-TEE and is access is > denied to other users with SoC level bus firewalls. Any access to this > device from Linux will result in firewall errors. > > We could remove this node, but it is still valid device description, > and it is possible it could be re-enabled in the bootloader if OP-TEE > is not used. So only disable this node for now. > > Signed-off-by: Andrew Davis <afd@ti.com> > --- > > Changes from v1: > - Added comment in DT > - Explained why it is only disabled in commit message > > arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi > index 8919fede3cd7..b3e714e1abed 100644 > --- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi > +++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi > @@ -127,6 +127,7 @@ rng: rng@4e10000 { > reg = <0x0 0x4e10000 0x0 0x7d>; > interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>; > clocks = <&k3_clks 136 1>; > + status = "disabled"; /* Used by OP-TEE */ > }; > }; >
Reviewed-by: Jayesh Choudhary <j-choudhary@ti.com>
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