* [PATCH] ARM64: dts: meson-gx: make efuse read-only
@ 2018-03-16 14:50 Jerome Brunet
2018-03-19 23:44 ` Kevin Hilman
0 siblings, 1 reply; 2+ messages in thread
From: Jerome Brunet @ 2018-03-16 14:50 UTC (permalink / raw)
To: Kevin Hilman, Carlo Caione
Cc: Jerome Brunet, devicetree, linux-arm-kernel, linux-amlogic, linux-kernel
efuse is one time programmable, so it is safer to deny write request
to this memory, unless the user is savvy enough to remove the read-only
flag from DTB
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
---
arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
index 2d51ccd60628..3c31e21cbed7 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
@@ -132,6 +132,7 @@
compatible = "amlogic,meson-gx-efuse", "amlogic,meson-gxbb-efuse";
#address-cells = <1>;
#size-cells = <1>;
+ read-only;
sn: sn@14 {
reg = <0x14 0x10>;
--
2.14.3
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] ARM64: dts: meson-gx: make efuse read-only
2018-03-16 14:50 [PATCH] ARM64: dts: meson-gx: make efuse read-only Jerome Brunet
@ 2018-03-19 23:44 ` Kevin Hilman
0 siblings, 0 replies; 2+ messages in thread
From: Kevin Hilman @ 2018-03-19 23:44 UTC (permalink / raw)
To: Jerome Brunet
Cc: Carlo Caione, devicetree, linux-arm-kernel, linux-amlogic, linux-kernel
Jerome Brunet <jbrunet@baylibre.com> writes:
> efuse is one time programmable, so it is safer to deny write request
> to this memory, unless the user is savvy enough to remove the read-only
> flag from DTB
>
> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Applied to v4.17/dt64,
Thanks,
Kevin
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2018-03-19 23:44 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-03-16 14:50 [PATCH] ARM64: dts: meson-gx: make efuse read-only Jerome Brunet
2018-03-19 23:44 ` Kevin Hilman
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).